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  • Management  (124)
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  • LUNAR AND PLANETARY EXPLORATION
  • Long Beach, CA  (94)
  • Exeter, UK
  • 1
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    The River Axe SAP Consultation Document (2021)
    Environment Agency | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11119 | 1256 | 2013-04-06 16:10:00 | 11119 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This is the River Axe Salmon Action Plan Consultation document produced by the Environment Agency in 2003. The report pays attention on the external consultation of the River Axe Salmon Action Plan (SAP). This strategy represents an entirely new approach to salmon management within the UK and introduces the concept of river-specific salmon spawning targets as a salmon management tool. This document is part of a national initiative to produce action plans for the management of all the main salmon rivers of England and Wales by 2003. The aim of this plan is (i) to assess the status of the salmon stocks and fisheries of the River Axe - including the use of Conservation Limits as part of this process, (ii) to identify factors which may be limiting stock and fishery performance and (iii) to propose remedial measures address these factors. The salmon stock of the River Axe was apparently in a healthy state in the 1950s, supporting net and rod fisheries with average annual catches of around 100 and 50 fish respectively. Catches declined through the 1970s and 1980s to the extent where no salmon were recorded in the late 1980s and early 1990s. This decline was probably due largely to the effects of agricultural pollution, which virtually extinguished the salmon stock of the River Axe. Water quality has subsequently improved, but has deteriorated again in recent years.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; Management ; England ; Cornwall ; River Axe ; Inland waters ; Freshwater fish ; Migratory species ; Salmon Action Plan ; Fish catch statistics ; Fishery data ; Fishery management ; Fishery regulations ; Nature conservation ; Water quality ; Spawning targets
    Repository Name: AquaDocs
    Type: monograph
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  • 2
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    The River Lyn SAP Consultation Document (2021)
    Environment Agency | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11125 | 1256 | 2013-04-06 15:59:47 | 11125 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This is the River Lyn Salmon Action Plan Consultation document produced by the Environment Agency in 2003. The report pays attention on the external consultation of the River Lyn Salmon Action Plan (SAP). This approach to salmon management within the England and Wales introduces the concept of river-specific Conservation Limits as a method of assessing the status of the salmon stock. The River Lyn Salmon Action Plan follows the format of those completed for the Rivers Exe, Axe, Avon & Erme, Teign, Torridge, Taw and Dart. It is the last of eight action plans that have been produced for salmon rivers within Devon Area. The River Lyn Salmon Action Plan contains a description of the river catchment and highlights particular features that are relevant to the salmon population and the associated fishery. The Lyn salmon stock is judged to be meeting its Conservation Limit. However, this assessment is uncertain as it is based on an estimate of rod exploitation rate, which in itself is also uncertain.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; Cornwall ; River Lyn ; Inland waters ; Freshwater fish ; Migratory species ; Salmon Action Plan ; Fish catch statistics ; Fishery data ; Fishery management ; Fishery regulations ; Nature conservation ; Water quality ; Spawning targets
    Repository Name: AquaDocs
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  • 3
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    The Rivers Avon & Erme SAP Consultation Document (2021)
    Environment Agency | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11117 | 1256 | 2013-04-06 16:10:16 | 11117 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This is the Rivers Avon & Erme Salmon Action Plan Consultation document produced by the Environment Agency in 2003. This document is part of a national initiative to produce action plans for the management of all the main salmon rivers of England and Wales by 2003. The aim of this plan is (i) to assess the status of the salmon stocks and fisheries of the rivers Avon and Erme - including the use of Conservation Limits as part of this process, (ii) to identify factors which may limiting stock and fishery performance and (iii) to propose remedial measures address these factors. The report pays attention on the external consultation of the Rivers Avon & Erme Salmon Action Plan (SAP). While the stocks of both rivers have exceeded their respective conservation limits occasionally in individual years, only the Erme has achieved a period of statistical compliance since 1993. It is possible that this situation is largely normal, due to the steep nature of the rivers, obstructions to migration and dependence on suitable flow conditions occurring at the right time of year. The decline of the spring-running component of the stocks has left the populations dependent on autumn flows for the success of the late running component. Actions required to improve compliance with Conservation Limits are proposed and prioritised. The urgent actions relate to the need to improve the consistency with which adequate numbers of salmon reach and utilise fully all the accessible areas of the river systems. This document is intended to be dynamic, with opportunities for review occurring at regular intervals. For example, as the science of fisheries management improves, particularly in the setting of Conservation Limits, so the targets may be altered to reflect any improved methodology.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; Cornwall ; Rivers Avon & Erme ; Inland waters ; Freshwater fish ; Migratory species ; Salmon Action Plan ; Fish catch statistics ; Fishery data ; Fishery management ; Fishery regulations ; Nature conservation ; Water quality ; Spawning targets
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  • 4
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    The River Exe SAP Consultation Document (2021)
    Environment Agency | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11123 | 1256 | 2013-04-06 16:09:16 | 11123 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This is the River Exe Salmon Action Plan Consultation document produced by the Environment Agency in 2003. The report pays attention on the external consultation of the River Exe Salmon Action Plan (SAP). This strategy represents an entirely new approach to salmon management within the UK and introduces the concept of river-specific salmon spawning targets as a salmon management tool. The River Exe SAP follows the format of those completed for the Rivers Teign, Torridge, Taw and Dart. It is the fifth of eight action plans that will be produced for salmon rivers within Devon Area. The River Exe SAP contains a description of the river catchment and highlights particular features that are relevant to the salmon population and the associated fishery. The Exe salmon stock is judged to be meeting its Conservation Limit. However, this assessment is uncertain as it is based on an estimate of rod exploitation rate, which in itself is also uncertain. At present there is no means of accurately assessing the River Exe salmon run. In common with many other rivers, estimation of stock using catch statistics and rod exploitation rate is the model used, when direct assessment is not possible. The installation of a fish counter on the lower river, or the use of other direct counting methods, would help to provide a direct assessment of the annual run of salmon into the river. This would improve our ability to estimate the spawning escapement and hence assess compliance with the Conservation Limit.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; Cornwall ; River Exe ; Inland waters ; Freshwater fish ; Migratory species ; Salmon Action Plan ; Fish catch statistics ; Fishery data ; Fishery management ; Fishery regulations ; Nature conservation ; Water quality ; Spawning targets
    Repository Name: AquaDocs
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  • 5
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    The River Teign SAP Consultation Document (2021)
    Environment Agency | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11129 | 1256 | 2013-04-06 15:57:09 | 11129 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This is the River Teign Salmon Action Plan Consultation document produced by the Environment Agency in 2003. The report pays attention on the external consultation of the River Teign Salmon Action Plan (SAP). This approach to salmon management within the England and Wales introduces the concept of river-specific Conservation Limits as a method of assessing the status of the salmon stock. The River Teign Salmon Action Plan follows the format of those completed for the Rivers Torridge, Taw and Dart. It is the fourth of eight action plans that will be produced for salmon rivers within the Devon Area Fisheries, Recreation and Biodiversity Team. The River Teign SAP contains a description of the river catchment and highlights particular features that are relevant to the salmon population and the associated fishery. The Teign salmon stock is currently failing to meet its conservation limit. This failure is largely attributed to the reduction in the survival rate during the marine phase of the salmon life cycle. This is likely to constrain stocks to lower levels than have existed historically. Still further catch controls may contribute to a reduction in exploitation rates and allow stocks to recover to meet their conservation limit. Other important actions include the continuation of habitat improvement works which aim to maximise spawning habitat utilisation, spawning success, and juvenile survival and production.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; Exeter ; River Teign ; Inland waters ; Freshwater fish ; Migratory species ; Salmon Action Plan ; Fish catch statistics ; Fishery data ; Fishery management ; Fishery regulations ; Nature conservation ; Water quality ; Spawning targets
    Repository Name: AquaDocs
    Type: monograph
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  • 6
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    The River Torridge SAP Final Plan (2021)
    Environment Agency | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11131 | 1256 | 2013-04-06 15:56:47 | 11131 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This is the River Torridge Salmon Action Plan Final document produced by the Environment Agency in 2000. This final Salmon Action Plan (SAP) for the River Torridge catchment has been produced after consideration of feedback from external consultation. The SAP provides a list of the issues and actions which were agreed for a five-year programme to maintain and improve the River Torridge salmon stock. Some of these actions have already been delivered before finalising the SAP, but others have yet to be addressed. An attempt has been made to estimate the cost of the actions, identify possible sources of funding and the timescale under which they will be dealt with. The Torridge salmon stock has declined dramatically since the 1960s and is currently failing to meet the spawning target. The decline in the spring fish component has accounted largely for the overall decrease in stocks. The reasons for the decline are not fully understood, but the spring fish problem is recognised as a national issue. The rate of survival over the marine phase has reduced in recent years for both the grilse and multi-sea winter (MSW) components. This is undoubtedly a contributory factor, which may now constrain stocks to lower levels than have existed historically. Agricultural pollution is recognised as one of the main factors limiting freshwater production. This SAP aims to promote long term collaboration between the Agency and other interested parties in managing the River Torridge salmon stock and fisheries.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; Management ; England ; Exeter ; River Torridge ; Inland waters ; Freshwater fish ; Migratory species ; Salmon Action Plan ; Fishery data ; Fishery management ; Fishery regulations ; Nature conservation ; Water quality ; Spawning targets
    Repository Name: AquaDocs
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  • 7
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    River Dart Scale Reading Investigation Report on the 1965 Season (2021)
    Devon River Board | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10866 | 1256 | 2013-03-26 13:40:44 | 10866 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-01
    Description: This is the fourth River Dart Scale Reading Investigation Report on the 1965 season by the Devon River Board. The object of this investigation is to examine, by means of scale-reading, the general biology of the salmon population of the River Dart. It reviews the methods used for the collection of scales and examination of the materials. It shows the results of the survey and the number of scales studied from each of the various sea-age classes, time of running with distribution of the sea-age groups throughout the season, fish sizes and smolt ages at migration. All it summarized in tables, and figures are included plotting weight distributions for each age classes and frequency distributions.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; South West ; River Dart ; River fisheries ; Freshwater fish ; Salmon fisheries ; Fish populations ; Population structure ; Population dynamics ; Migratory species
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  • 8
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    River Dart Scale Reading Investigation Report on the 1967 Season (2021)
    Devon River Authority | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10868 | 1256 | 2013-03-26 13:40:27 | 10868 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-01
    Description: This is the sixth and final River Dart Scale Reading Investigation Report on the 1967 Season by the Devon River Board. The object of this investigation is to examine, by means of scale-reading, the general biology of the salmon population of the River Dart. It reviews the methods used for the collection of scales and examination of the materials. It shows the results of the survey and the number of scales studied from each of the various sea-age classes, time of running with distribution of the sea-age groups throughout the season, fish sizes and smolt ages at migration. All it summarized in tables, and figures are included plotting weight distributions for each age classes and frequency distributions. It also compares the results of previous reports and gives a full summary for the investigation (including previous reports).
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; South West ; River Dart ; River fisheries ; Freshwater fish ; Salmon fisheries ; Fish populations ; Population structure ; Population dynamics ; Migratory species
    Repository Name: AquaDocs
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  • 9
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    River Dart Scale Reading Investigation Report on the 1966 Season (2021)
    Devon River Board | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10867 | 1256 | 2013-03-26 13:40:36 | 10867 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-01
    Description: This is the fifth River Dart Scale Reading Investigation Report on the 1966 Season by the Devon River Board. The object of this investigation is to examine, by means of scale-reading, the general biology of the salmon population of the River Dart. It reviews the methods used for the collection of scales and examination of the materials. It shows the results of the survey and the number of scales studied from each of the various sea-age classes, time of running with distribution of the sea-age groups throughout the season, fish sizes and smolt ages at migration. All it summarized in tables, and figures are included plotting weight distributions for each age classes and frequency distributions. It also compares the results of previous reports.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; South West ; River Dart ; River fisheries ; Freshwater fish ; Salmon fisheries ; Fish populations ; Population structure ; Population dynamics ; Migratory species
    Repository Name: AquaDocs
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  • 10
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    River Dart Scale Reading Investigation Report on the 1962 Season (2021)
    Devon River Board | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10869 | 1256 | 2013-03-26 13:42:19 | 10869 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-01
    Description: This is the first River Dart Scale Reading Investigation Report on the 1962 season by the Devon River Board. The object of this investigation is to examine, by means of scale-reading, the general biology of the salmon population of the River Dart. It reviews briefly the theory and mechanics of the scale-reading technique, the life history of the salmon, and the methods used for the collection of scales and the examination of the materials. It shows the results of the survey and the number of scales studied from each of the various sea-age classes, time of running with distribution of the sea-age groups throughout the season, fish sizes and smolt ages at migration. All are summarized in various tables and figures are also included, plotting weight distributions for each age classes and frequency distributions.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; South West ; River Dart ; River fisheries ; Freshwater fish ; Salmon fisheries ; Fish populations ; Population structure ; Population dynamics ; Migratory species
    Repository Name: AquaDocs
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  • 11
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    River Dart Scale Reading Investigation 1972 (2021)
    Devon River Authority | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10881 | 1256 | 2013-04-01 17:23:27 | 10881 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-01
    Description: This is the River Dart Scale Reading Investigation Report on the 1972 season by the Devon River Board. The object of this investigation is to examine, by means of scale-reading, the general biology of the salmon population of the River Dart. In 1967 the final report on a five-year scale reading programme was summarised, at the time it was considered sufficient information to help with restocking programmes and the management of salmon population. But a further scale reading programme was started in an attempt to monitor changing patterns in salmon runs that may be caused by the new influences. It reviews the methods used for collection of the scales and examination of the materials. It shows the results of the survey and the number of scales studied from each of the various sea-age classes, time of running with distribution of the sea-age groups throughout the season, fish sizes and smolt ages at migration. All is summarized in tables, and figures are included showing weight distributions for each age classes and frequency distributions.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; South West ; River Dart ; River fisheries ; Salmon fisheries ; Fish populations ; Population structure ; Population dynamics ; Migratory species
    Repository Name: AquaDocs
    Type: monograph
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  • 12
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    River Exe Scale Reading Investigation. 5th Annual Report for the 1970 Season (2021)
    Devon River Authority | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10892 | 1256 | 2013-03-26 13:28:07 | 10892 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-01
    Description: This is the 5th Annual Report of the Rive Exe Scale Reading Investigation for the 1970 season by the Devon River Authority. The object of this investigation is to examine, by means of scale reading, the biology of age classes of the salmon population of the River Exe. It reviews the methods used for the collection of scales and examination of the materials. It shows the results of the survey and the number of scales studied from each of the various sea-age classes, time of running with distribution of the sea-age groups throughout the season, fish sizes and smolt ages at migration. All is summarized in tables, and figures are included showing weight distributions for each age classes and frequency distributions.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; South West ; River Exe ; River fisheries ; Salmon fisheries ; Fish populations ; Population structure ; Population dynamics ; Migratory species ; Population density
    Repository Name: AquaDocs
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  • 13
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    River Exe Scale Reading Investigation. 6th Annual Report for the 1971 Season. (2021)
    Devon River Authority | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10893 | 1256 | 2013-10-27 13:08:58 | 10893 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-01
    Description: This is the 6th Annual Report of the Rive Exe Scale Reading Investigation for the 1971 Season by the Devon River Authority. The object of this investigation is to examine, by means of scale reading, the biology of age classes of the salmon population of the River Exe. It reviews the methods used for the collection of scales and examination of the materials. It shows the results of the survey and the number of scales studied from each of the various sea-age classes, time of running with distribution of the sea-age groups throughout the season, fish sizes and smolt ages at migration. All is summarized in tables, and figures are included showing weight distributions for each age classes and frequency distributions.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; South West ; River Exe ; River fisheries ; Salmon fisheries ; Fish populations ; Population structure ; Population dynamics ; Migratory species ; Population density
    Repository Name: AquaDocs
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  • 14
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    The River Axe SAP Final Plan (2021)
    Environment Agency | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11120 | 1256 | 2013-04-06 16:09:51 | 11120 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This is the River Axe Salmon Action Plan Final document produced by the Environment Agency in 2004. The River Axe Salmon Action Plan (SAP) has been produced after consideration of feedback from public consultation. The final plan provides a list of the agreed issues and actions for the next five years to maintain and improve the salmon stock of the River Axe. Efforts have been made to identify possible sources of funding, partners and timescales. It indicates how the plan will be managed, including the process for reviewing stock status, issues, actions and progress. Low marine survival is currently a major factor limiting salmon stocks throughout the United Kingdom. However, on the River Axe the freshwater environment is still the main factor limiting the recovery of the salmon stock. Most of the adults returning to the Axe at present are probably derived from hatchery reared smolts, although there has been some natural reproduction in recent years. Juvenile populations in the Yarty indicate that this is a tributary where salmon have started to re-establish a self-sustaining population. Actions to improve the quality of the freshwater environment, both in terms of water quality and sedimentation, are seen as the top priorities, and are required to allow the Axe to support a self-sustaining salmon population.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; Cornwall ; Rivers Axe ; Inland waters ; Freshwater fish ; Migratory species ; Salmon Action Plan ; Fishery data ; Fishery management ; Fishery regulations ; Nature conservation ; Water quality ; Spawning targets
    Repository Name: AquaDocs
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  • 15
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    The River Dart SAP Consultation Document (2021)
    Environment Agency | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11121 | 1256 | 2013-04-06 16:09:43 | 11121 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This is the River Dart Salmon Action Plan Consultation document produced by the Environment Agency in 2003. The report pays attention on the external consultation of the River Dart Salmon Action Plan (SAP). This strategy represents an entirely new approach to salmon management within the UK and introduces the concept of river-specific salmon spawning targets as a salmon management tool. The north of the River Dart catchment is included in the Dartmoor candidate Special Area of Conservation (cSAC), designated under the Council EC Directive 92/43/EEC, the “Habitats Directive”. One of the conservation objectives for the cSAC is to maintain the habitat for Atlantic Salmon, Salmo Salar in favourable condition. The River Dart is an important salmon, sea trout and brown trout fishery with no significant coarse fishery. However, eels are ubiquitous throughout the catchment and are lightly exploited. The River Dart SAP contains a description of the river catchment and highlights particular features that are relevant to the salmon population and the associated fishery.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; Cornwall ; Rivers Dart ; Inland waters ; Freshwater fish ; Migratory species ; Salmon Action Plan ; Fish catch statistics ; Fishery data ; Fishery management ; Fishery regulations ; Nature conservation ; Water quality ; Spawning targets
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    The River Lyn SAP Final Plan (2021)
    Environment Agency | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11126 | 1256 | 2013-04-06 15:59:23 | 11126 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This is the River Lyn Salmon Action Plan Final document produced by the Environment Agency in 2003. This final Salmon Action Plan (SAP) for the River Lyn catchment has been produced after consideration of feedback from external consultation. It provides a list of the agreed issues and actions for the next five years to maintain and improve the River Lyn salmon stock. The actions presented within this Salmon Action Plan clarify the important issues and factors currently limiting the salmon stock on the river. The resolution of these issues should ensure that a sustainable salmon population will be maintained for future generations. An attempt has been made to cost these actions, identify possible sources of funding and to provide a timescale for action. This SAP aims also to promote long term collaboration between the Agency and other interested parties in managing the River Lyn salmon stock and fisheries.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; Cornwall ; River Lyn ; Inland waters ; Freshwater fish ; Migratory species ; Salmon Action Plan ; Fishery data ; Fishery management ; Fishery regulations ; Nature conservation ; Water quality ; Spawning targets
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  • 17
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    River Exe Scale Reading Investigation. 7th Annual Report for the 1972 season (2021)
    Devon River Authority | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10894 | 1256 | 2013-03-26 13:27:46 | 10894 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-01
    Description: This is the 7th Annual Report of the Rive Exe Scale Reading Investigation for the 1972 Season by the Devon River Authority. The object of this investigation is to examine, by means of scale reading, the biology of age classes of the salmon population of the River Exe. It reviews the methods used for the collection of scales and examination of the materials. It shows the results of the survey and the number of scales studied from each of the various sea-age classes, time of running with distribution of the sea-age groups throughout the season, fish sizes and smolt ages at migration. All is summarized in tables, and figures are included showing weight distributions for each age classes and frequency distributions.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; South West ; River Exe ; River fisheries ; Salmon fisheries ; Fish populations ; Population structure ; Population dynamics ; Migratory species ; Population density
    Repository Name: AquaDocs
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  • 18
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    The River Exe SAP Final Plan (2021)
    Environment Agency | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11124 | 1256 | 2013-04-06 16:08:24 | 11124 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This is the River Exe Salmon Action Plan Final document produced by the Environment Agency in 2003. This final Salmon Action Plan (SAP) for the River Exe catchment has been produced after consideration of feedback from external consultation. The actions presented within this Salmon Action Plan clarify the important issues and factors currently limiting the salmon stock on the river. An attempt has been made to cost these actions, identify possible sources of funding and to provide a timescale for action. This SAP aims also to promote long term collaboration between the Agency and other interested parties in managing the River Exe salmon stock and fisheries. The River Exe salmon population is currently judged to be passing its Conservation Limit. However, its apparent declining trend in egg deposition in the recent years and the high uncertainty in its stock assessment suggest the following actions as priorities: actions promoting good land management, maximising salmon natural spawning activity and protecting smolts throughout the Exe catchment. Also, the lack of information on salmon stocks and its habitat quality and availability is recognised as the main factor limiting the better management of salmon fisheries. The actions presented in this document are perceived as those required to address the important issues and factors limiting the salmon stock.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; Management ; England ; Cornwall ; River Exe ; Inland waters ; Freshwater fish ; Migratory species ; Salmon Action Plan ; Fishery data ; Fishery management ; Fishery regulations ; Nature conservation ; Water quality ; Spawning targets
    Repository Name: AquaDocs
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    The River Taw SAP Final Plan (2021)
    Environment Agency | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11128 | 1256 | 2013-04-06 15:57:17 | 11128 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This is the River Taw Salmon Action Plan Final document produced by the Environment Agency in 2000. This final Salmon Action Plan (SAP) for the River Taw catchment has been produced after consideration of feedback from external consultation. The SAP provides a list of the issues and actions which were agreed for a five-year programme to maintain and improve the River Taw salmon stock. Some of these actions have already been delivered before finalising the SAP, but others have yet to be addressed. An attempt has been made to estimate the cost of the actions, identify possible sources of funding and the timescale under which they will be dealt with. The Taw salmon stock is currently failing to meet its spawning target. However, there was a period of compliance in the 1990s following a decade of failure through the 1980s. The freshwater environment of the Taw has improved in recent years. The actions presented in this SAP are perceived as those that are required to address, as far as possible, the important issues and factors currently limiting the salmon stock on the river. This SAP aims to promote long term collaboration between the Agency and other interested parties in managing the River Taw salmon stock and fisheries.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; Management ; England ; Cornwall ; River Taw ; Inland waters ; Freshwater fish ; Migratory species ; Salmon Action Plan ; Fishery data ; Fishery management ; Fishery regulations ; Nature conservation ; Water quality ; Spawning targets
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    The River Dart SAP Final Plan (2021)
    Environment Agency | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11122 | 1256 | 2013-04-06 16:09:36 | 11122 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This is the River Dart Salmon Action Plan Final document produced by the Environment Agency in 2003. This final Salmon Action Plan (SAP) for the River Dart catchment has been produced after consideration of feedback from external consultation. It provides a list of the agreed issues and actions for the next five years to maintain and improve the River Dart salmon stock. The low marine survival (likely to be below 10%) is possibly to be the main cause for the River Dart salmon stock non-compliance with its conservation limit. Actions protecting smolts and maximising spawning activity of returning adults are seen as priorities to contribute to mitigate the low marine survival. Also the lack of information on salmon stock and its habitat is recognised as one main factor limiting the better management of salmon fisheries. Efforts will be focused on gaining more knowledge and improving modelling techniques. The actions presented in this document are perceived as those required to address the important issues and factors limiting the salmon stock. This SAP aims also to promote long term collaboration between the Agency and other interested parties in managing the River Dart salmon stock and fisheries.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; Cornwall ; River Dart ; Inland waters ; Freshwater fish ; Migratory species ; Salmon Action Plan ; Fishery data ; Fishery management ; Fishery regulations ; Nature conservation ; Water quality ; Spawning targets
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    The Rivers Avon & Erme SAP Final Plan (2021)
    Environment Agency | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11118 | 1256 | 2013-04-06 16:10:08 | 11118 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This is the Rivers Avon & Erme Salmon Action Plan Final document produced by the Environment Agency in 2004. The Rivers Avon and Erme Salmon Action Plan (SAP) has been produced after consideration of feedback from public consultation. The final plan provides a list of the agreed issues and actions for the next five years to maintain and improve the salmon stocks and fisheries of both rivers. Efforts have been made to identify possible sources of funding, partners and timescales. It indicates how the plan will be managed, including the process for reviewing stock status, issues, actions and progress. Low marine survival is currently a major factor limiting the numbers of salmon returning to spawn in both the Avon and the Erme. Actions to improve the accessibility of spawning areas and to maximise the productivity of spawning and nursery habitats are seen as priorities, which should help to offset the low marine survival. The quality of the information available to assess salmon stocks is recognised as a limiting factor in the management of salmon fisheries. The SAP aims also to promote long term collaboration between the Agency and other interested parties in managing the salmon stocks and fisheries of the Avon and the Erme.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; Cornwall ; Rivers Avon & Erme ; Inland waters ; Freshwater fish ; Migratory species ; Salmon Action Plan ; Fishery data ; Fishery management ; Fishery regulations ; Nature conservation ; Water quality ; Spawning targets
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    The River Taw SAP Consultation Document (2021)
    Environment Agency | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11127 | 1256 | 2013-04-06 15:57:29 | 11127 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This is the River Taw Salmon Action Plan Consultation document produced by the Environment Agency in 2000. The report pays attention on the external consultation of the River Taw Salmon Action Plan (SAP). This approach to salmon management within the England and Wales introduces the concept of river-specific Conservation Limits as a method of assessing the status of the salmon stock. The River Taw Salmon Action Plan (SAP) includes a description of the current status of the rod and net fisheries and historical trends. The Taw salmon stock has declined since the 1960s and is currently failing to meet the spawning target. The decline in the spring fish component has accounted largely for the overall decrease in stocks. The reasons for the decline are unclear, but the spring fish problem is recognised as a national issue. The rate of survival over the marine phase has reduced in recent years for both the grilse and MSW components. This is undoubtedly a contributory factor, which may now constrain stocks to lower levels than have existed historically.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; Management ; England ; Cornwall ; River Taw ; Inland waters ; Freshwater fish ; Migratory species ; Salmon Action Plan ; Fish catch statistics ; Fishery data ; Fishery management ; Fishery regulations ; Nature conservation ; Water quality ; Spawning targets
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    The River Teign SAP Final Plan (2021)
    Environment Agency | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11130 | 1256 | 2013-04-06 15:58:59 | 11130 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This is the River Teign Salmon Action Plan Final document produced by the Environment Agency in 2003. This final Salmon Action Plan (SAP) for the River Teign catchment has been produced after consideration of feedback from external consultation. This final plan provides a list of the agreed issues and actions for the next five years to maintain and improve the River Teign salmon stock. An attempt has been made to cost these actions, identify possible sources of funding, partners and the timescale under which they will be dealt with. It indicates how the plan will be managed, i.e., implemented and reviewed, and, summarises progress of on-going actions. The low marine survival (likely to be below 10%) is possibly the main cause for the River Teign salmon stock non-compliance with its conservation limit. Actions protecting smolts and maximising spawning activity of returning adults are seen as priorities to contribute to offset the low marine survival. This SAP aims also to promote long term collaboration between the Agency and other interested parties in managing the River Teign salmon stock and fisheries.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; Management ; England ; Exeter ; River Teign ; Inland waters ; Freshwater fish ; Migratory species ; Salmon Action Plan ; Fishery data ; Fishery management ; Fishery regulations ; Nature conservation ; Water quality ; Spawning targets
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    River Dart Scale Reading Investigation Report on the 1963 Season (2021)
    Devon River Board | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10870 | 1256 | 2013-03-26 13:41:33 | 10870 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-01
    Description: This is the second River Dart Scale Reading Investigation Report on the 1963 season by the Devon River Board. The object of this investigation is to examine, by means of scale-reading, the general biology of the salmon population of the River Dart. It reviews the methods used for the collection of scales and examination of the materials. It shows the results of the survey and number of scales studied from each of the various sea-age classes, time of running with distribution of the sea-age groups throughout the season, fish sizes and smolt ages at migration. All are summarized in tables, and figures are alo included plotting weight distributions for each age classes and frequency distributions. The report also remarks the similarity of the results with those for 1962.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; South West ; River Dart ; River fisheries ; Freshwater fish ; Salmon fisheries ; Fish populations ; Population structure ; Population dynamics ; Migratory species
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    River Dart Scale Reading Investigation Report on the 1964 Season (2021)
    Devon River Board | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10871 | 1256 | 2013-03-26 13:40:55 | 10871 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-01
    Description: This is the third River Dart Scale Reading Investigation Report on the 1964 season by the Devon River Board. The object of this investigation is to examine, by means of scale-reading, the general biology of the salmon population of the River Dart. It reviews the methods used for the collection of scales and examination of the materials. It shows the results of the survey and the number of scales studied from each of the various sea-age classes, time of running with distribution of the sea-age groups throughout the season, fish sizes and smolt ages at migration. All are summarized in tables, and figures are also included plotting weight distributions for each age classes and frequency distributions. After three years of the investigation a pattern is emerging which shows that the Dart salmon population is mainly composed of four year old fish, which have spent two years in the river and then two year or little longer at sea.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; South West ; River Dart ; River fisheries ; Freshwater fish ; Salmon fisheries ; Fish populations ; Population structure ; Population dynamics ; Migratory species
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    River Erme Fisheries Survey 1965 (2021)
    Devon River Authority | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10890 | 1256 | 2013-03-26 13:35:47 | 10890 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-01
    Description: This is the River Erme Fisheries Survey, 1965 by the Devon River Authority.The survey was carried out during April and May 1965, with the principal object being the determination of the abundance and distribution of salmonid fish in the River Erme in relation to the discharge from Stowford Paper Mills, Ivybridge. It contains a brief introduction of general aspects of the catchment, chemistry, pollution, biology and fisheries in the river, methodology that looks at the selected transects and techniques for sampling, results and recommendations. It contains tables with totals of all salmonid fish found at each section, size distribution of trout, surface area of section and population density.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; Management ; England ; South West ; River Erme ; River fisheries ; Salmon fisheries ; Fish populations ; Population structure ; Population dynamics ; Migratory species ; Population density
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    River Dart fisheries survey 1965 (2021)
    Devon River Authority | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10872 | 1256 | 2013-03-26 13:52:39 | 10872 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-01
    Description: This is the first River Dart Fisheries Survey produced by the Devon River Authority; which was carried out from May to October 1965. The objective was to examine the distribution and relative abundance of salmonid fish in the River Dart, in order to assess the possibility or desirability, of increasing salmon smolt production of the river by artificial propagation or other means.Description, chemical, pollution and biological conditions of the River Dart along with fisheries catches, water extraction and spawning are briefly cited. The method includes the choice of sections and sampling techniques. The results go through the number/type/class of fishes counted while the survey took place, distribution patterns within the different transects/brooks, competition between salmon parr and trout and estimations of population. The section on the discussion and recommendations is introduced by a brief explanation of the bases for the Artificial Propagation Programme and the River Dart specific case-study. The annexes contains River Dart and tributaries maps, fish size distribution tables and figures, tables with totals of salmonid fish found and population density tables.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; South West ; River Dart ; Rivers ; River fisheries ; Freshwater fish ; Salmon fisheries ; Salmo salar ; Salmo trutta ; Fishery surveys ; Fish populations ; Population structure ; Stock assessment
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    River Dart fisheries survey 1969 (2021)
    Devon River Authority | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10873 | 1256 | 2013-03-26 13:52:09 | 10873 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-01
    Description: This is the second River Dart Fisheries Survey produced by the Devon River Authority; which was carried out from April to July, 1969. The objective was to examine the distribution and relative abundance of salmonid fish in the River Dart, in order to assess the possibility or desirability, of increasing salmon smolt production of the river by artificial propagation or other means.In addition to the tributaries examined in the 1965 survey, further sections were studied on the River Hems and Holy Brook and reference should be made to the River Survey Report, 1965 for introductory information. The method includes the choice of sections and sampling techniques. The results go through the number/type/class of fishes counted while the survey took place and distribution patterns within the different transects/brooks. The discussion tries to remark the importance of understanding the differences between 1965 and 1969 surveys. The Appendix contains tables with totals of salmonid fish found and distribution sizes for each section, population density tables and a map with new surveyed sections.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; South West ; River Dart ; Rivers ; River fisheries ; Freshwater fish ; Migratory species ; Salmon fisheries ; Salmo salar ; Salmo trutta ; Fishery surveys ; Fish populations ; Population structure ; Stock assessment
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    River Dart fisheries survey 1974 (2021)
    South West Water Authority | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10874 | 1256 | 2013-03-26 13:51:40 | 10874 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-01
    Description: This is the River Dart Fisheries Survey 1974 report produced by the South West Water Authority. The survey was carried out between July and October 1974 to assess the extent of the 0+ and 1+ Salmo salar L. population in the Dart catchment and thereby assess directly the success of the 1973/74 and 1972/73 spawning season. The survey showed that there were large numbers of salmon parr distributed throughout the upper reaches of the Dart, reflecting the successful spawning of the 1973/74 and 1972/73 season. It contains tables with survey sections locations, presence/absence for each section and location maps with spawning grounds and sampling stations.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; South West ; River Dart ; Rivers ; River fisheries ; Freshwater fish ; Migratory species ; Salmon fisheries ; Salmo salar ; Salmo trutta ; Fishery surveys ; Stock assessment ; Spawning ; Population structure ; Stocking
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    Report to the Devon River Board on the investigations in the Walla Brook (2021)
    University of Exeter, Hatherley Biological Laboratories | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10884 | 1256 | 2013-03-26 13:39:45 | 10884 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-01
    Description: This is the Report to the Devon River Board on the investigations in the Walla Brook (1955-58). This report provides information on the nature and quantification of the bottom fauna, the population of fish and their habits and behaviour throughout the year, and the relation of this fish population to the potential stock-carrying capacity of the river. It includes a bottom fauna list with occurring invertebrates and an Addendum to the report.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; South West ; Rivers ; River fisheries ; Salmon fisheries ; Environmental monitoring ; Population dynamics ; Migratory species ; Water quality
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    River Dart Scale Reading Investigation 1971 (2021)
    Devon River Authority | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10880 | 1256 | 2013-03-26 13:40:06 | 10880 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-01
    Description: This is the River Dart Scale Reading Investigation Report on the 1971 season by the Devon River Board. The object of this investigation is to examine, by means of scale-reading, the general biology of the salmon population of the River Dart. In 1967 the final report on a five-year scale reading programme was summarised, at the time it was considered sufficient information to help with restocking programmes and the management of salmon population. But a further scale reading programme was started in an attempt to monitor changing patterns in salmon runs that may be caused by the new influences. It reviews the methods used for the collection of scales and examination of the materials. It shows the results of the survey and the number of scales studied from each of the various sea-age classes, time of running with distribution of the sea-age groups throughout the season, fish sizes and smolt ages at migration. All are summarized in tables, and figures are also included plotting weight distributions for each age classes and frequency distributions.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; South West ; River Dart ; River fisheries ; Salmon fisheries ; Fish populations ; Population structure ; Population dynamics ; Migratory species
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    Pelagic shark/swordfish drift gill net fishery: management information document (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/242 | 8 | 2020-08-24 03:42:30 | 242 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-27
    Description: In 1977 a new fishery began to develop off the coast ofsouthern California. Long gill nets, drifted near the surface in the deep offshore waters, were being used successfully in landing pelagic sharks, primarily threshers. Recent increases in the retail demand for fish had led wholesale buyers to look for new sources of fish protein. Shark meat looked promising to many buyers. Aided by the public's rekindled fascination for sharks, the timing seemed favorable for introducing sharks as food. Word spread that wholesalers were willing to pay a good price for sharks. This created what appeared to many commercial fishermen to be the beginning of a bonanza.The new shark fishery grew rapidly. The number of vesselsengaged in offshore drift gill net operations grew from about 15 in 1977 to approximately 230 by 1984.Fishery biologists have expressed concern over the rapidexpansion of the commercial shark fleet. Historically, sharkfisheries have tended to decline after their initial success, due principally to slow growth and reproductive rates which seem to characterize sharks as a group. Perhaps the new thresher shark fishery might also be subject to a similar decline.Biologists were not the only ones who looked on the newindustry with concern. Among sport fishermen and conservation groups, rumors of marlin, whales, and seals taken by the hundreds became commonplace.Concern spread among the traditional swordfish harpoonfleet that landings by drift gill nets might glut the swordfish markets, driving prices down to the point that harpooners could no longer compete. Some harpooners voiced fears that drift gill nets might even overfish the swordfish stocks, causing serious declines in the availability of fish.Some conservation groups sought to ban the use of all gillnets, feeling that gill nets are inherently indiscriminant in what they catch and that the benefits derived from their use is always over-shadowed by the waste of marine life resulting from their use.In September of 1980, the Legislature enacted Assembly Bill2564 (Kapiloff), which directed the Department of Fish and Game to conduct a study of the drift gill net shark fishery. The purpose of the study was to determine what impact the use of drift gill nets might have on existing fisheries or upon other members of the local marine community such as whales, dolphins, and seals. The final report of that study "Pelagic Shark/Swordfish Drift Gill Net Fishery Management Information Document" was sent to the California Legislature in January 1983.In September 1982, the Legislature enacted Senate Bill 1573(Beverly), directing the Department of Fish and Game to continue monitoring the drift gill net fishery. It also directed, that a further study be conducted on the status of the thresher shark and swordfish resources off California and on the effects of the fishery on other resources. A report on this study would be prepared and delivered to the Legislature on or before January 1, 1985. The study was conducted. This is the report on that work. (77pp.)
    Keywords: Management ; Fisheries ; Biology
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    Status of the spawning biomass of the Pacific sardine, 1981-82 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/288 | 8 | 2010-12-14 15:34:09 | 288 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: State law requires that the population of Pacificsardines, Sardinops sagax caeruleus, must reach aminimum spawning biomass of 20,000 short tons beforeinitiation of a fishery. Data from ichthyoplanktonsurveys, the anchovy live bait fishery, sea surveycruises, the mackerel purse seine fishery, and a brownpelican food study are discussed concerning evidenceof an increase in population size. The spawningbiomass of the northern stock of sardines appears tobe remaining well below 20,000 tons. (9pp.)
    Keywords: Management ; Fisheries ; Biology ; Pacific sardines ; Sardinops sagax caeruleus
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    Status of the spawning biomass of the Pacific sardine, 1982-83 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/286 | 8 | 2010-12-14 15:34:03 | 286 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: State law provides for the initiation of a fishery forPacific sardines, Sardinops sagax caeruleus, when thespawning biomass of sardines reaches 20,000 short tons.Data from ichthyoplankton surveys, sea survey cruises,the mackerel fishery sampling program, and the live baitmonitoring program are discussed with regard to an increasein population size. It appears that the spawningbiomass of the northern stock of Pacific sardines remainsbelow 20,000 tons. (7pp.)
    Keywords: Management ; Fisheries ; Biology ; Pacific sardines ; Sardinops sagax caeruleus
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    Status of the spawning biomass of the Pacific sardine, 1983-84 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/321 | 8 | 2011-09-29 22:14:42 | 321 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: State law provides for the initiation of a fishery for Pacific sardines, Sardinops sagax caeruleus, when the spawning biomass of sardines reaches 20,000 short tons. Data from ichthyoplankton surveys, sea survey cruises, the mackerel fishery sampling program, and the live-bait fishery monitoring program are discussed with regard to an increase in population size. It appears that the spawning biomass of the northern stock of Pacific sardines remains below 20,000 tons. Legislation passed in 1983 which affects the incidental take and commercial use of sardines is also discussed. (9pp.)
    Keywords: Management ; Fisheries ; Pacific sardine ; Sardinops sagax caeruleus
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    Status of the spawning biomass of the Pacific sardine, 1984-85 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/325 | 8 | 2011-09-29 22:15:06 | 325 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: State law provides for the initiation of a 1000-ton fishery for Pacific sardines, Sardinops sagax, when the spawning biomass of sardines reaches 20 000 short tons.Data from ichthyoplankton surveys, an aerial spotter index, sea survey cruises, the mackerel fishery, and the live bait fishery are discussed as indicators of the relative abundance of sardines compared to previous years. It appears the spawning biomass of the northern subpopulation of Pacific sardine remains below 20 000 tons. A proposedsurvey plan is described for determining the relative magnitude of the sardine spawning biomass on an annual basis. Legislation is discussed which was passed in 1984 and pertains to the sardine resource. (23pp.)
    Keywords: Management ; Fisheries ; Pacific sardines ; Sardinops sagax
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    Cruise Report 72-KB-11: Diver certification course (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/587 | 8 | 2011-09-29 21:48:10 | 587 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-01
    Description: (1p.)
    Keywords: Engineering ; R/V Kelp Bass ; Santa Catalina island ; California ; Scuba
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  • 38
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    Cruise Report 74-KB-5: Abalone and Lobster Investigations (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/657 | 8 | 2011-09-29 21:43:49 | 657 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-01
    Description: Document has 8pp.
    Keywords: Ecology ; Management ; Fisheries ; Biology ; Anacapa Island ; Santa Cruz Island ; California ; Pink abalone ; Haliotis corrugata ; White abalone ; Haliotis sorenseni ; Spiny lobster ; Panulirus interruptus
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  • 39
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    The status of the northern Anchovy resource and its management (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/661 | 8 | 2011-09-29 21:43:43 | 661 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-01
    Description: The northern anchovy, Engraulis mordax, has been thesubject of increasing exploitation during the last 60 years.Concentrated studies of its biology and population dynamicshas yielded population estimates of 5 to 8 million metrictons or about 5 to 10 times that existing during 1950-51.Continuing cooperative study programs between the State ofCalifornia, the Federal Government and the government ofMexico are recommended. (15pp.)
    Keywords: Management ; Fisheries ; Biology ; Northern anchovy ; Engraulis mordax
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  • 40
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    Status of the Jack Mackerel resource and its management (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/667 | 8 | 2011-09-29 21:43:27 | 667 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-01
    Description: The jack mackerel, Trachurus symmetricus, resource off thewest coast of North America is known to be large and widelydistributed. The spawning biomass is estimated to be 2.1 to 4.8 million tons based upon abundance of jack mackerel eggs collected at sea. The distribution extends from the Gulf of Alaska to the Gulf of Tehuantepec, off the coast of southern Mexico, and as far as 1,500 miles seaward. Within this range lies an area of maximum density which extends from Point Conception to central Baja California.Jack mackerel biological data has not been processed veryrapidly due to higher priorities for analysis of sardine andPacific mackerel data, and the apparent healthy condition ofthis resource. The California Department of Fish and Gameinitiated several projects in 1972 to resolve unanswered biological questions. (14pp.)
    Keywords: Management ; Fisheries ; Biology ; Jack mackerel ; Trachurus symmetricus
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  • 41
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    The status of the Pacific mackerel resource and its management (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/668 | 8 | 2011-09-29 21:43:29 | 668 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-01
    Description: Recent developments in management, biological knowledge,and history of the Pacific mackerel, Scomber japonicus, resource and its fishery in California and Mexico are reviewed. Currently the resource is extremely depleted, and commercial fishing has been curtailed. The 1970 year class was successful, and eventual rehabilitation of the fishery is anticipated. (15pp.)
    Keywords: Management ; Fisheries ; Biology ; Pacific mackerel ; Scomber japonicus
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  • 42
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    Mariculture in California (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/673 | 8 | 2011-09-29 21:42:47 | 673 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-01
    Description: Mariculture in California is currently under developmentby several private concerns, universities, and by theCalifornia Department of Fish and Game. At present, mostof these efforts classify as research and development witha few in the pilot production phase.The Department of Fish and Game is presently conductingresearch in the culture of mortality resistant strains ofPacific oyster, Crassostrea virginica, the red abalone,Haliotis rufescens, and the spot prawn, Pandalus platyceros. (18pp.)
    Keywords: Management ; Fisheries ; Aquaculture ; Biology ; Mariculture ; California ; Pacific oyster ; Crassostrea virginica ; red abalone ; Haliotis rufescens ; spot prawn ; Pandalus platyceros
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  • 43
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    The status of the California yellowtail resource and its management (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/671 | 8 | 2011-09-29 21:42:53 | 671 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-01
    Description: The California yellowtail, Seriola dorsalis, is a highlyfavored sport fish and a minor commercial species. Since1954 commercial landings have been limited by demand, and thesport catch has been about three times the number of fishcaught by commercial fishermen.Recreational fishing for yellowtail in southernCalifornia waters is almost entirely dependent on annualmigrants from central and northern Baja California. The resource is presently healthy but reduced catches off California could be the result of an expanded catch off Mexico. (19pp.)
    Keywords: Management ; Fisheries ; Biology ; California yellowtail ; Seriola dorsalis ; California
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  • 44
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    Pacific oyster disease and mortality studies in California (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/678 | 8 | 2011-09-29 21:42:21 | 678 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-01
    Description: Investigation of Pacific oyster mortalities was carriedout over a six-year period in major northern and centralCalifornia oyster rearing areas. Effort was directed towarddefining areas of high oyster mortality and determiningpossible etiologies of observed losses through monthly monitoring and sampling of experimental and commercial oyster populations in Morro Bay, Elkhorn Slough, Drakes Estero, Tomales Bay and Humboldt Bay.Hydrographic data was collected in all areas and a two yearstudy of phytoplankton and water quality in Humboldt Baywas initiated to observe relationships with oyster mortalitypatterns.Research undertaken to develop methods to alleviate losses among Pacific oyster populations included an oyster seed source study, investigation of optimal oyster culturingtechniques and preliminary efforts to develop a mortalityresistant strain of oysters in Humboldt Bay. The cause ofmortality among Pacific oyster populations in Humboldt Bayremains uncertain but a bacterial etiology correlated withelevated water temperatures is suspected. The best methodof circumvention of losses appears to be the culturing of"domestic" seed sources on racks. (55pp.)
    Keywords: Management ; Aquaculture ; Biology ; Pacific oyster ; Crassostrea gigas ; California
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  • 45
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    California's Pacific bonito resource, its status and management (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/704 | 8 | 2011-09-29 21:40:10 | 704 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-02
    Description: Pacific bonito, Sarda chiliensis, have become increasinglyimportant to California's sport and commercial fishermen sincethe early 1960's, but are now showing signs of decline. Recentinvestigations have revealed much about the bonito's lifehistory and population dynamics.These recent discoveries have been brought together into a document which will serve as a guide to future managementactions. Document has 44 pages.
    Keywords: Management ; Fisheries ; Biology ; California ; Pacific bonito ; Sarda chiliensis
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  • 46
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    A report on the sea otter, Enhydra lutris L., in California (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/674 | 8 | 2011-09-29 21:42:26 | 674 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-01
    Description: This report discusses in detail findings and observationsof 5 years of research on the sea otter population and itsrelationship to the nearshore marine environment in California. Initial efforts were directed at providing some relief to the commercial abalone fishery in the Cambria - Point Estero area north of Morro Bay. This fishery has subsequently collapsed along with other commercial and sport abalone and sport crab fisheries throughout the sea otter's range due to continued sea otter foraging. Capturing, tagging and translocation studies, censusing studies, examination of sea otter remains, habitat surveys, food habits observations and studies on otters in captivity provide a broad base of information on the expandingsea otter population in California and its effects onresources utilized by man. Recommendations for sea ottermanagement consistent with esthetic, recreational, and commercial uses of marine resources are included in this report. (95pp.)
    Keywords: Management ; Biology ; sea otter ; Enhydra lutris ; California ; Estero Bay ; Monterey Bay
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  • 47
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    The Southern California Jack Mackerel fishery and age composition of the catch for the 1947-48 through 1956-57 seasons (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/676 | 8 | 2011-09-29 21:42:22 | 676 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-01
    Description: The southern California commercial catch of jack mackerel experienced a tremendous expansion during the 1947-48 season. Landings ranged from a high of 158.7 million pounds landed during 1952-53 t o a low of 14.0 million pounds landed during 1954-55.The 1947 year class contributed 296,718 thousand fish and 167,997 thousand pounds. (49pp.)
    Keywords: Management ; Fisheries ; Biology ; Southern California ; Jack Mackerel ; Trachurus symmetricus
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  • 48
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    The Southern California jack mackerel fishery and age composition of the catch for the 1957-58 through 1961-62 seasons (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/677 | 8 | 2011-09-29 21:42:28 | 677 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-01
    Description: Approximately 29.7,25.9, 50.9, 64.6, and 102.9 millionpounds were landed for the 1957-58 through 1961-62 seasons.The 1957, 1958, 1959, and 1960 year classes each contributedover 100 million fish to the fishery over the fiveseasons. The 1958 year class also contributed 112 millionpounds landed. (27pp.)
    Keywords: Management ; Fisheries ; Biology ; Southern California ; jack mackerel ; Trachurus symmetricus
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  • 49
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    The Southern California jack mackerel fishery and age composition of the catch for the 1962-63 through 1966-67 seasons (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/681 | 8 | 2011-09-29 21:40:58 | 681 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-02
    Description: Commercial landings for the 1962-63 through 1966-67 seasons ranged from a high of 92.9 million pounds landed in 1962-63 to a low of 41.2 million pounds landed during 1966-67.The 1958 year class contributed 401,054,000 fish and127,207,000 pounds through the 9 seasons it was present inthe fishery. This was the largest number of fish contributedto the fishery by any year class since jack mackerel canningstarted in 1947. (30pp.)
    Keywords: Management ; Fisheries ; Biology ; southern California ; jack mackerel ; Trachurus symmetricus
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  • 50
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    Pismo clams and sea otters (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/684 | 8 | 2011-09-29 21:41:45 | 684 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-02
    Description: Sea otter foraging along Monterey Bay beaches and at Atascadero State Beach has precluded recreational Pismo clam fisheries at six major clamming beaches. Outside the sea otter's foraging range Pismo clam stocks are yielding good catches; apparently the stringent controls on the recreational fishery is adequate to maintain the State's Pismo clam stocks. Clammer interviews at Orange and Los Angeles County beaches and at beaches near Pismo Beach and Morro Bay and in Monterey Bay revealed the clam stocks to be on a healthy, sustainable yield basis. Exceptionallylarge numbers of small 1.5 to 3.5 inch Pismo clams were reported at all clam beaches surveyed north of Pt. Conception indicating good year class survival in recent years. Sea otters forage dense Pismo clam beds by moving along a "front", progressively foraging from one beach to the next, reducing the clams to low levels before moving on. Some sea otters continue to forage throughout the areas previously depleted by the larger aggregate moving northward, thus the large numbers of sublegal clamsin the 1.5 to 3.5 inch size group in these intertidal and shallow subtidal areas are not expected to reach legal size in numbers sufficient to develop a recreational fishery. In Monterey Bay about 60,000 Pismo clams were removed or killed by human activity in the April 1974 to March 1975 period. A rough estimate of the Pismo clams consumed by sea otters during this same period in Monterey Bay is over 500,000 clams. (51pp.)
    Keywords: Ecology ; Management ; Biology ; Pismo clam ; Tivela stultorum ; Sea otter ; Enhydra lutris L. ; Monterey Bay ; California
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  • 51
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    A review of the San Diego Bay striped mullet, Mugil Cephalus, fishery (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/723 | 8 | 2011-09-29 21:38:15 | 723 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-02
    Description: San Diego Bay was reopened to commercial gill net fishingfor striped mullet, Mugil cephalus, in that portion of thebay south of the San Diego - Coronado bridge in 1977 via anexperimental gear permit issued by the Fish and GameCommission. In 1985, legislation was passed allowing up tofive permits each annual season to fish for striped mulletin south San Diego Bay. Annual landings ranged from 18,700to 46,800 pounds from 1980 through 1986. (17pp.)
    Keywords: Management ; Fisheries ; San Diego Bay ; California ; Striped mullet ; Mugil cephalus
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  • 52
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    The speckled scallop, Argopecten circularis, in Aqua Hedionda Lagoon, San Diego County, California (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/724 | 8 | 2011-09-29 21:38:24 | 724 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-02
    Description: Speckled scallops, Argopecten circularis (Sowerby, 1835), were sampled at Agua Hedionda Lagoon, Carlsbad, San Diego County from March 1984 to October 1986, to obtain basic life history data. Monthly samples of scallops were collected, measured, and released to obtain length frequency data for estimates of growth, life span, and spawning period. Subsamples of scallops were collected for determination of gonadal-somatic and adductor muscle-somatic indices.In 1984 large concentrations of speckled scallops were found on the sand-silt bottom of the lagoon, closely associated with eelgrass, Zostra marina. During the course of the study the numbers of scallops declined, until their virtual disappearance at the end of 1986. Monthly length frequency plots from 24,375 scallop measurements indicate that this is a rapidly growing species with a short life span. Gonadal- and adductor muscle-somatic indices from subsamples of 1,714 scallops indicate first spawning at age one and a relationship between temperature and spawning.Based on this study management recommendations are made for the speckled scallop. (39pp.)
    Keywords: Management ; Fisheries ; Biology ; speckled scallop ; Argopecten circularis ; Aqua Hedionda Lagoon ; San Diego ; California
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  • 53
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    The Northern Anchovy reduction fishery for the 1978-79 through 1981-82 seasons (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/717 | 8 | 2011-09-29 21:41:21 | 717 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-02
    Description: Nearly 49,000 metric tons (MT) of anchovies were taken during the 1978-79 season, followed by 32,390 MT in 1979-80, 60,678 MT in 1980-81 and 45,150 MT in 1981-82. A total of 14,076 fish was sampled during the four seasons for age, length and sex. The fishery during the four seasons consisted mainly of young-of-the-year and age groups I and II fish. The 1978 and 1979 yr classes comprised the major share of the catch. Seasonal mean lengths varied from 112 mm standard length (SL) in the 1979-80 season to 122 mm SL for the 1981-82 season. Female to male sex ratios ranged from 1.17:l (1978-79 season) to 1.59:l (1979-80 season). (28pp.)
    Keywords: Management ; Fisheries ; Biology ; Northern anchovy ; Engraulis mordax ; California
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  • 54
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    Red abalone size data from Johnsons Lee, Santa Rosa Island, collected from 1978 to 1984 (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/720 | 8 | 2011-09-29 21:39:31 | 720 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-02
    Description: Red abalone, Haliotis rufescens, were collected at Johnsons Lee, Santa Rosa Island, in the summers of 1978 through 1982, and in 1984, to obtain data for determining various fishery population parameters. Annual visits to the study site were made at yearly intervals to simplify growth calculations.During the first four visits, 2145 red abalones were tagged,measured, and replaced. Shell damage, soft tissue injuries, and causes of mortality were noted. The method of tagging isdescribed.Recovery of first tagged abalone after one year was approximately 30%. Analysis of variance of the annual samples indicated that the samples were, with one exception, not different. Summaries are presented of the number of abalone collected and tagged by year, frequencies of shell damage, soft tissue injury, predatory sponge infestation, and total mortality. Appendices include a listing of the raw size data and various codes for each tagged abalone. (56pp.)
    Keywords: Management ; Fisheries ; Biology ; Red abalone ; Haliotis rufescens ; Santa Roas Island ; California
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  • 55
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    The status of the white seabass resource and its management (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/756 | 8 | 2011-09-29 21:36:21 | 756 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-02
    Description: White seabass, Cynoscion nobilis, have been fished inCalifornia since late in the ninteenth century. At presentthe commercial fishery is stable, landing about 8 hundredthousand pounds per year, but the sport fishing has declinedto the poorest catch on record. (Document has 11 pages.)
    Keywords: Management ; Fisheries ; Biology ; White seabass ; Cynoscion nobilis ; California
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  • 56
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    Cruise Report 74-KB-30 and 74-M-6: Abalone - Lobster Investigations (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/842 | 8 | 2011-09-29 21:32:12 | 842 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-03
    Description: (3pp.)
    Keywords: Management ; Fisheries ; Biology ; R/V Kelp Bass ; R/V Mollusk ; San Clemente Island ; Santa Catalina Island ; California ; green abalone ; Haliotis fulgens ; tag and recapture
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  • 57
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    Cruise Report 74-KB-31: Sportfish-Kelp Habitat Project (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/843 | 8 | 2011-09-29 21:32:17 | 843 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-03
    Description: (2pp.)
    Keywords: Management ; Fisheries ; Biology ; R/V Kelp Bass ; Catalina Island ; Palos Verdes Peninsula ; California ; Giant kelp ; Macrocystis sp.
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  • 58
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    Pendleton Artificial Reef: annual progress report presented to Southern California Edison Company (2021)
    State of California, Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/2197 | 8 | 2011-09-29 19:29:20 | 2197 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-12
    Description: (PDF contains 82 pages.)
    Description: Nearshore Sportfish Habitat Enhancement Program
    Keywords: Management ; Ecology ; Fisheries ; Biology ; artificial reef ; marine algae ; marine invertebrates ; fish ; Southern California ; Nearshore Sportfish Habitat Enhance~cnt Program
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  • 59
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    Southern California marine sport fishing: private-boat catch and effort during 1981 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/314 | 8 | 2011-09-29 22:14:03 | 314 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: An extensive study of fishing activity stemming from privately-owned boats was conducted during 1981 in order to determine the magnitude and impact of this segment of southern California's marine sport fishery. Anglers and divers returning from fishing trips were interviewed at launch ramps, boat hoists, and boat-rental facilities from Pt. Conception to the Mexican border. Information on fishing catch and effort was used to calculate statistical estimatesof total catch, total effort, catch of preferred sportfish species, and compliance rates for legal minimumsize limits.An estimated 1,013,000 organisms were landed during355,000 fishing trips. The major components of thisyear's catch were 1) Pacific mackerel, Scomber japonicus, 231,000 landed; 2) Pacific bonito, Sarda chiliensis, 157,000 landed; 3) white croaker, Genyonemus lineatus, 148,000 landed; and 4) rockfish, Sebastes spp., 142,000 landed. These fishes contributed two-thirds of the total catch.This year anglers were favored by mild weather andthe summertime appearance of migratory game fishes,resulting in higher than usual effort levels andabove average catch rates for favored game species. (81pp.)
    Keywords: Management ; Fisheries ; Pacific mackerel ; Scomber japonicus ; Pacific bonito ; Sarda chiliensis ; white croaker ; Genyonemus lineatus ; rockfish ; Sebastes spp.
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  • 60
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    Southern California marine sport fishing: Private boat anglers' catch and effort in Los Angeles County, October-December, 1980 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/15 | 8 | 2011-09-29 22:41:18 | 15 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: The catch landed and effort expended by private-boatsport fishermen was studied in Los Angeles Countybetween October and December 1980, in order todetermine the impact of one segment of the sportfishery on local marine resources. Fishermenreturning from fishing trips were interviewed atlaunch ramps, hoists, and boat rental facilities.This report contains quantitative data and statisticalestimates of total effort, total catch, catch ofpreferred species, and length frequencies for thosespecies whose catches are regulated by minimum sizelimits.An estimated 94,000 organisms were landed by 22,000anglers and 1,200 divers. The major components of thecatch were Pacific mackerel, Scomber japonicus, 29,000landed; white croaker, Genyonemus lineatus, 17,500landed; and Pacific bonito, Sarda chiliensis, 11,500landed. These three species comprised two-thirds ofthe total catch.Anglers' compliance with size limit regulations wasvariable. Nearly 80% of all measured bass, Paralabraxspp., were legal size, but only 50% of the Californiahalibut, Paralichthys californicus, were legal size.Divers showed much better compliance with the sizelimit regulations: 96% of all California spinylobsters, Panulirus interruptus, were legal size. (14pp.)
    Keywords: Management ; Fisheries ; marine species ; recreational fishing ; fish size ; anglers ; divers
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    An evaluation of the California barracuda resource and its management (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/17 | 8 | 2011-09-29 22:41:25 | 17 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: Despite efforts to manage it, the California barracuda,Sphyraena argentea, resource has exhibited a marked declinein abundance from levels exhibited prior to 1950. This paperpresents a history of the California barracuda fisheries, asummary of its life history and population dynamics; and anevaluation of the resource under current management practices and recommendations for improvements in current management.Evaluation of the current status of the resource indicatesits abundance off southern California is low but slowlyimproving with a marked improvement in size composition.Management recommendations, when adopted, should help increase the rate of recovery of the California barracuda resource. (73pp.)
    Keywords: Management ; Fisheries ; Biology ; California barracuda ; Sphyraena argentea ; fisheries ; California
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  • 62
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    Southern California independent sport fishing survey Quarterly Report for January-March, 1976 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/19 | 8 | 2011-09-29 22:41:33 | 19 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: A 1-yr. study was undertaken to devise a sampling programwhich would determine fishing catch and effort levels ofone segment of the southern California marine sportfishery. Personal interviews of fishermen were conductedat launch ramps, boat hoists, and boat rental locationsfrom Santa Barbara County to the Mexican border. Thisreport presents quantitative data and statisticalestimates of effort, total catch, catch of preferredsport fish species, and length frequencies of selectedspecies landed by private-boat sport fishermen.An estimated 55,000 anglers and 3,300 divers landed 182,000fishes, molluscs, and crustaceans. The major componentsof the catch were 1) rockfishes, Sebastes spp., 73,000landed; 2) white croaker, Genyonemus lineatus, 28,000landed; 3) bass, Paralabrax spp., 15,000 landed; and4) Pacific bonito, Sarda chiliensis, 12,000 landed. (22pp.)
    Keywords: Management ; Fisheries
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  • 63
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    Southern California independent sport fishing survey Quarterly Report for April-June, 1976 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/18 | 8 | 2011-09-29 22:41:28 | 18 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: A 1-yr. study was undertaken to devise a sampling programwhich would determine fishing catch and effort levels ofone segment of the southern California marine sportfishery. Personal interviews of fishermen were conductedat launch ramps, boat hoists, and boat rental locationsfrom Santa Barbara County to the Mexican border. Thisreport presents quantitative data and statistical estimatesof effort, total catch, catch of preferred sport fishspecies, and length frequencies of selected specieslanded by private-boat sport fishermen.An estimated 102,000 anglers and 3,700 divers landed 275,000fishes, molluscs, and crustaceans. The major componentsof the catch were 1) white croaker, Genyonemus lineatus,85,000 landed; 2) bass, Paralabrax spp., 48,000 landed; and3) Pacific bonito, Sarda chiliensis, 42,000 landed. (22pp.)
    Keywords: Management ; Fisheries
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  • 64
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    Southern California private-boat sport fishermen: how familiar are they with the sport fishing regulations? (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/10 | 8 | 2011-09-29 22:40:55 | 10 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: Anglers frequently violate sport fishing regulations out ofignorance, by mistake, or by deliberate action. To determinewhether unfamiliarity with the regulations plays a major part in this problem, we asked anglers on privately-owned,trailerable boats at launch ramps and boat hoists a series of questions which tested their knowledge of the regulations.We found that on any winter weekend about 30% of the anglerson private-boats knew none of the size limits, 50% knew atleast three of the six size limits, and 4% knew all of thesize limits. Only about 25% of the anglers kept a copy ofthe regulations on their boats for reference when fishing.The results of the survey indicate that greater effort mustbe expended to familiarize sport fishermen with the fishingregulations. (9pp.)
    Keywords: Management ; Fisheries ; recreational fishing ; fish size ; anglers ; regulations
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  • 65
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    Southern California independent sport fishing survey Quarterly Report for July-September, 1975 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/20 | 8 | 2011-09-29 22:41:36 | 20 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: A 1-yr. study was undertaken to devise a sampling programwhich would determine fishing catch and effort levels ofone segment of the southern California marine sportfishery. Personal interviews of fishermen were conductedat launch ramps, boat hoists, and boat rental locationsfrom Santa Barbara County to the Mexican border. Thisreport presents quantitative data and statisticalestimates of effort, total catch, catch of preferredsport fish species, and length frequencies of selectedspecies landed by private-boat sport fishermen.An estimated 107,000 anglers and 5,300 divers landed 307,000fishes, molluscs, and crustaceans. The major componentsof the catch were 1) white croaker, Genyonemus lineatus,87,000 landed; 2) bass, Paralabrax spp., 30,000 landed; and3) Pacific mackerel, Scomber japonicus, 21,000 landed. (24pp.)
    Keywords: Management ; Fisheries
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  • 66
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    Southern California independent sport fishing survey Quarterly Report no. 10 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/45 | 8 | 2021-02-27 19:34:29 | 45 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: During the October 1 - December 31, 1977 quarter, 28launch ramps, hoists, and boat rental locations weresampled a total of 294 times. During the sample days11,942 anglers and 1,025 divers were interviewed.They expended 83,882 effort-hours and landed 36,741fishes and other organisms of 163 identified species.The ten most commonly landed species were 1) Pacificmackerel, Scomber japonicus, 16%; 2) white croaker,Genyonemus lineatus, 16%; 3) olive rockfish, Sebastesserranoides, 6%; 4) blue rockfish, S. mystinus, 4%;5) halfmoon, Medialuna californiensis, 4%; 6) Pacificbonito, Sarda chiliensis, 3%; 7) rock scallop,Hinnites multirugosus, 2%; 8) chilipepper, Sebastesgoodei, 2%; 9) greenspotted rockfish, S. chlorostictus,2%; and 10) kelp bass, Paralabrax clathratus, 2%. (25pp.)
    Keywords: Management ; Fisheries ; Biology
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  • 67
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    Southern California commercial passenger fishing vessel sampling study Quarterly Report no. 14; October 1 - December 31, 1978 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/47 | 8 | 2011-09-29 22:38:45 | 47 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: Between October 1 and December 31, 1978, Departmental personnel sampled catches during 132 trips aboard commercial passenger fishing vessels (partyboats) operating in southern California. A total of 25,571 fishes belonging to 87 species were identified and measured.In addition, six long-range trips originating in San Diego and fishing in Mexican waters were sampled. A total of 1,225 fishes comprising 20 species was identified and measured at dockside from these vessels.The 10 most commonly taken species during the quarter accounted for 76.3% of the southern California catch. The most frequently sampled species were bocaccio, Sebastes paucispinis (24.7%); Pacific mackerel, Scomber japonicus (15.8%); chilipepper, Sebastes goodei (8.7%); kelp bass, Paralabrax clathratus (7.4%); Pacific bonito, Sarda chiliensis (5.7%); olive rockfish, Sebastes serranoides (4.1%); blue rockfish, S. mystinus (4.0%); squarespot rockfish, S. hopkinsi (2.1%); greenspotted rockfish, S. chlorostictus (2.l%); and vermilion rockfish, S. miniatus (1.9%). Samples gathered from long-range trips showed thetop five species accounted for 90.4% of the fishes sampled. The most frequently sampled species were yellowtail, Seriola lalandi (28.8%); yellowfin tuna, Thunnus albacares (20.7%); wahoo, Acanthocybiumsolanderi (16.2%); snowy grouper, Epinephelus niveatus (12.4%); and dolphinfish, Coryphaena hippurus (12.3%).December marked the final month in which partyboats were sampled off southern California. (69pp.)
    Keywords: Management ; Fisheries
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  • 68
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    Southern California independent sport fishing survey annual report no. 2 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/48 | 8 | 2011-09-29 22:38:50 | 48 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: For the second consecutive year, a program of randomfield sampling of anglers and divers fishing fromprivately owned boats was conducted at southernCalifornia launch ramps, hoists, and boat rentalfacilities. This study presents quantitative dataand statistical estimates of effort, total catch,catch of preferred sport fish species, and lengthfrequencies of particular species landed by privateboat sport fishermen. An assessment of sportfishermen's compliance with current fishingregulations is also included.Catch composition and effort levels variedconsiderably among the five counties sampled,reflecting differences in water temperature,offshore habitat, and preferences for particularspecies by local fishermen. A comparison of thisyear's results with those of last year showed thatalthough catch rates for some species were similarboth years, others diverged considerably. (84pp.)
    Keywords: Management ; Fisheries
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  • 69
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    Southern California independent sport fishing survey annual report no. 3 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/54 | 8 | 2011-09-29 22:39:23 | 54 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: For the third consecutive year a program of random fieldsampling of anglers and divers fishing from privatelyowned boats was conducted at southern California launchramps, hoists, and boat rental facilities. This studypresents quantitative data and statistical estimates ofeffort, total catch, catch of preferred sport fishspecies, and length frequencies of particular specieslanded by private boat sport fishermen. An assessment ofsport fishermen's compliance with current fishingregulations is included along with an estimate of thenumber of anglers who returned empty-handed.Catch composition and effort levels varied considerablyamong the five counties sampled, reflecting differencesin water temperature, offshore habitat, and preferencesfor particular species by local fishermen. A comparisonof this year's results with those of last year showedthat angler effort dropped 16% and angler catch dropped15%, while diver effort and catch dropped 18% and 9%respectively. This reduction is attributed to the recordamounts of rainfall in southern California which severelycurtailed fishing activity during four months of the year. (105pp.)
    Keywords: Management ; Fisheries
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  • 70
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    Southern California independent sport fishing survey Quarterly Report for October-December, 1975 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/52 | 8 | 2011-09-29 22:39:18 | 52 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: A 1-yr study was undertaken to devise a sampling programwhich would determine fishing catch and effort levels ofone segment of the southern California marine sportfishery. Personal interviews of fishermen were conductedat launch ramps, boat hoists, and boat rental locationsfrom Santa Barbara County to the Mexican border. Thisreport presents quantitative data and statisticalestimates of effort, total catch, catch of preferredsport fish species, and length frequencies of selectedspecies landed by private-boat sport fishermen.An estimated 52,000 anglers and 4,300 divers landed179,000 fishes, molluscs, and crustaceans. The majorcomponents of the catch were 1) rockfishes, Sebastes spp.,68,000 landed; 2) white croaker, Genyonemus lineatus,38,000 landed; and 3) bass, Paralabrax spp., 13,000landed. (21pp.)
    Keywords: Management ; Fisheries
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  • 71
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    Southern California independent sport fishing survey Quarterly Report no. 12 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/55 | 8 | 2011-09-29 22:39:37 | 55 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: During the April 1 - June 30, 1978 quarter, 29 launchramps, hoists, and boat rental locations weresampled a total of 307 times. During the sample days15,220 anglers and 685 divers were interviewed. Theyexpended 107,738 effort-hours and landed 38,132 fishesand other organisms of 146 identified species.The ten most commonly landed species were 1) whitecroaker, Genyonemus lineatus, 30%; 2) Pacific mackerel,Scomber japonicus, 11%; 3) kelp bass, Paralabraxclathratus, 9%; 4) barred sand bass, P. nebulifer, 4%;5) blue rockfish, Sebastes mystinus, 2%; 6) bocaccio,S. paucispinis, 2%; 7) olive rockfish, S. serranoides,2%; 8) brown rockfish, S. auriculatus, 2%; 9) Pacificsanddab, Citharichthys sordidus, 2%; and 10) blacksurfperch, Embiotoca jacksoni, 2%. (26pp.)
    Keywords: Management ; Fisheries
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  • 72
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    Southern California partyboat sampling study Quarterly Report no. 11 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/56 | 8 | 2011-09-29 22:39:39 | 56 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: From January 1 through March 31, 1978, Departmentalpersonnel sampled catches from 141 trips while aboard commercial passenger fishing vessels operating in southern California. A total of 25,339 fishes belonging to 88 species were identified and measured. Otoliths for age determination studies were removed from 247 rockfish carcasses representing 22 species. Additionally, nine long-range trips originating in San Diego and fishing in Mexican waters were sampled. A total of 1,518 fishes representing 24 species was identified and measured at dockside from these vessels. The 10 most commonly taken species during the quarteraccounted for 68.1% of the southern California catch.The most frequently sampled species of bocaccio, Sebastespaucispinis (21.1%); chilipepper, S. goodei (16.5%); Pacific mackerel, Scomber japonicus (8.7%); blue rockfish, Sebastes mystinus (6.0%); kelp bass, Paralabrax clathratus ( 5.2%); vermilion rockfish, S. miniatus (3.7%); squarespot rockfish, S. hopkinsi (3.2%); greenspotted rockfish, S. chlorostictus (2.9%); olive rockfish, S. serranoides (2.8%); and whitecroaker, Genyonemus lineatus (2.6%). Samples gathered fromlong-range trips showed the top five species accounted for83.8% of the fish sampled. The most frequently sampled species were wahoo, Acanthocybium solanderi (28.6%);yellowfin tuna, Thunnus albacares (23.7%); yellowtail, Seriola dorsalis (18.6%); leopard grouper, Mycteroperca rosacea (6.2%); and gulf grouper, M. jordani (3.8%). (55pp.)
    Keywords: Management ; Fisheries
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  • 73
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    Southern California marine sport fishing: private-boat catch and effort, 1975-1976 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/53 | 8 | 2011-09-29 22:39:20 | 53 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: The catch landed and effort expended by private-boatsport fishermen were studied from July, 1975 throughJune, 1976, in order to determine the magnitude andimpact of one segment of the marine sport fishery insouthern California. Fishermen returning from afishing trip were interviewed at launch ramps, boathoists, and boat rental locations from Pt. Conceptionto the Mexican border. This report presentsquantitative data and statistical estimates of totaleffort, total catch, catch of preferred sport fishspecies, and length-frequencies of size-regulatedspecies.An estimated 944,000 organisms were landed by 315,000anglers and 16,500 divers. A large variety of specieswas landed, but six species contributed over one-halfof the catch. Divers landed very few sublegalorganisms, but anglers took large numbers of sublegalsize fish. Continuance of this study will be necessaryto show changes in fish availability, fishing pressure,and compliance with fishing regulations. (64pp.)
    Keywords: Management ; Fisheries
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  • 74
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    Southern California anchovy reduction fishery sampling plan review (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/62 | 8 | 2011-09-29 13:04:16 | 62 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: The sampling plan applied to the northern anchovy, Engraulis mordax, reduction fishery catch was reviewed to determine the effects on age composition estimates which would be caused by decreasing the sample size per stratum of catch. Age composition estimates for samples of 5, 10, and 15 per stratum were computer calculated using the sampling plan program and then compared with estimates for the standard sample of 30 from the same strata. As the sample size decreased the variances of the age composition statistics greatly increased. Errors were detected in the computer program and the variance equation have been corrected. (30pp.)
    Keywords: Management ; Fisheries ; Biology ; Northern anchovy ; Engraulis mordax
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  • 75
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    Southern California partyboat sampling study Quarterly Report no. 9 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/66 | 8 | 2011-09-29 13:04:02 | 66 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: Between July 1 and September 30, 1977, Departmentalpersonnel sampled catches during 184 trips aboard commercial passenger fishing vessels operating in southernCalifornia. A total of 28,617 fishes belonging to 89species was identified and measured. Otoliths for agedetermination studies were removed from 222 rockfishcarcasses representing 20 species.The 10 most commonly sampled species during thequarter accounted for 82.9% of the catch. The most frequently sampled fishes were kelp bass, Paralabraxclathratus (18.9%); Pacific mackerel, Scomber japonicus(17.6%); olive rockfish, Sebastes serranoides (15.5%);blue rockfish, S. mystinus (8.7%); barred sand bass, P.nebulifer (8.6%); California barracuda, Sphyraenaargentea (4.9%); sculpin, Scorpaena guttata (2.4%);bocaccio, S. paucispinis (2.3%); white croaker, Genyonemuslineatus (2.1%); and squarespot rockfish, S. hopkinsi (1.8%).Partyboat activity continued to center on surfacefishing. (33pp.)
    Keywords: Management ; Fisheries ; Biology
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  • 76
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    Southern California independent sport fishing survey Quarterly Report no. 9 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/67 | 8 | 2011-09-29 13:04:07 | 67 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: During the July 1 - September 30, 1977 quarter, 29launch ramps, hoists, and boat rental locationswere sampled 380 times. During the sample days25,256 anglers and 1,445 divers were interviewed.They expended 179,564 effort-hours and landed64,371 fishes, molluscs, crustaceans, echinoderms,and coelenterates of 179 identified species.The ten most commonly landed species were 1)white croaker, Genyonemus lineatus, 25%; 2)Pacific mackerel, Scomber japonicus, 8%; 3)olive rockfish, Sebastes serranoides, 7%; 4)kelp bass, Paralabrax clathratus, 6%; 5) blue rockfish, Sebastes mystinus, 3%; 6)barred sand bass, Paralabrax nebulifer, 3%; 7)brown rockfish, Sebastes auriculatus, 2%; 8)spotted sand bass, Paralabrax maculatofasciatus, 2%;9)grass rockfish, Sebastes rastrelliger, 2%; and10)queenfish, Seriphus politus, 2%. (28pp.)
    Keywords: Management ; Fisheries
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  • 77
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    Preliminary report on the ability of marine recreational fishermen to identify the more commonly caught sportfish (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/70 | 8 | 2011-09-29 22:37:38 | 70 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: Fishermen on piers and privately-owned boats in southernCalifornia were surveyed to determine their ability toidentify (by common name) 18 of the more commonly caughtsportfish. Anglers were shown color photographs of the fishand asked to identify them. Most people were not able toidentify more than 5 or 6 species correctly. The numberof incorrect responses (calling one species by another'sname, or using a non-recommended common name) was nothigh. Instead, it was the level of non-response (thefisherman had no idea what the species was) that wassurprisingly high.The results of the survey indicate that anglers are notfamiliar with the names of the fish they are most likelyto catch. This has serious implications concerning ourfishery management programs which depend on anglers'compliance with fishing regulations. The effectivenessof the programs depends in part on anglers being ableto recognize regulated species when encountered. (30pp.)
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  • 78
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    Southern California commercial passenger fishing vessel sampling study Quarterly Report no. 13: July 1 - September 30, 1978 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/69 | 8 | 2011-09-29 22:38:34 | 69 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: Between July 1 and September 30, 1978, Departmental personnel sampled catches during 185 trips aboard commercial passenger fishing vessels (partyboats) operating in southern California. A total of 35,984 fishes representing 98 species were identified and measured.Otoliths for age determination studies were removed from 285 rockfish carcasses representing 18 species. In addition, 10 long-range trips originating in San Diego and fishing in Mexican waters were sampled. A total of 957 fishes comprising 17 species were identified and measured at dockside from these vessels.The ten most commonly seen species during the quarter accounted for 83.5% of the southern California catch. The most frequently sampled species were Pacific mackerel, Scomber japonicus (26.5%); kelp bass, Paralabrax clathratus (20.5%); bocaccio, Sebastes paucispinis (8.2%); Pacific bonito, Sarda chiliensis (7.7%); barred sandbass, P. nebulifer (6.7%); olive rockfish, Sebastes serranoides (4.9%); white croaker, Genyonemus lineatus (2.9%); blue rockfish, S. mystinus (2.7%) ; chilipepper, S. goodei (1.8%); and albacore, Thunnus alalunga (1.7%). Data gathered from long-range vessels showed the top five species accounted for 92.6% of the fish sampled.The most frequently sampled species were yellowtail, Seriola dorsalis (61.5%); wahoo, Acanthocybium solanderi (11.7%); albacore (8.3%); yellowfin tuna, T. albacares (6.8%); and giant sea bass, Stereolepis gigas (4.4%). (59pp.)
    Keywords: Management ; Fisheries
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  • 79
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    Southern California partyboat sampling study Quarterly Report no. 10 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/73 | 8 | 2011-09-29 22:37:44 | 73 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: Between October 1 and December 31, 1977, Departmentalpersonnel sampled catches during 166 trips aboard commercialpassenger fishing vessels operating in southern California.A total of 27,468 fishes belonging to 101 species wereidentified and measured. Otoliths for age determinationstudies were removed from 263 rockfish carcasses representing 27 species. In addition, 37 long-range trips originating in San Diego and fishing in Mexican waters were sampled. A total of 7,204 fishes comprising 20 species was identified and measured at dockside from these vessels.The 10 most commonly taken species during the quarteraccounted for 74.3% of the southern California catch. Themost frequently sampled species were chilipepper, Sebastesgoodei (16.1%); Pacific mackerel, Scomber japonicus (15.4%) ; bocaccio, Sebastes paucispinis (10.1%); kelp bass, Paralabrax clathratus (7.8%); halfmoon, Medialuna californiensis (5.7%); olive rockfish, Sebastes serranoides (5.4%); blue rockfish, S. mystinus (4.4%); greenspotted rockfish, S. chlorostictus (3.4%); vermilion rockfish, S. miniatus (3.2%); and Pacific bonito, Sarda chiliensis (2.7%). Data gathered from long-range trips showed the top five species accounted for 88.8% of the fish sampled. The most frequently sampled species were yellowtail, Seriola dorsalis (31.0%); yellowfin tuna, Thunnus albacares (23.7%); dolphinfish, Coryphaena hippurus (18.6%); wahoo, Acanthocybium solanderi (10.0%); and snowy grouper, Epinephelus niveatus (5.6%). (67pp.)
    Keywords: Management ; Fisheries
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  • 80
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    Evaluation of regulations concerning the fishery for California halibut, Paralichthys californicus (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/78 | 8 | 2011-09-29 22:38:14 | 78 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: Evaluation of the capture of California halibut in relation to Article 13 (Sections 8495, 8496,8497 and 8498) of the Fish and Game Code, shows that the regulation is doing its job. Nearly all undersized (less than 22 inches) juvenile halibut are escaping through the 7 1/2 inch mesh trawl cod end and retention of other fishesseldom approach the 226.8 kg (500 lb) limitimposed by regulation. (5pp.)
    Keywords: Management ; Fisheries ; California halibut ; Paralichthys californicus ; fisheries
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  • 81
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    Southern California partyboat sampling study Quarterly Report no. 12: April 1 - June 30, 1978 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/72 | 8 | 2011-09-29 22:37:42 | 72 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: Between April 1 and June 30, 1978, Departmental personnelsampled catches during 148 trips aboard commercial passengerfishing vessels operating in southern California. A total of29,374 fishes representing 97 species were identified andmeasured. Otoliths for age determination studies were removed from 72 rockfish carcasses representing 11 species. In addition, nine long-range trips originating in San Diego and fishing in Mexican waters were sampled. A total of 1,190 fishes comprising 21 species was identified and measured at dockside from these vessels.The 10 most commonly taken species during the quarteraccounted for 76.9% of the southern California catch. The most frequently sampled species were kelp bass, Paralabrax clathratus (21.1%); bocaccio, Sebastes paucispinis (15.5%); Pacific mackerel, Scomber japonicus (13.1%); white croaker, Genyonemus lineatus (6.0%); chilipepper, Sebastes goodei (4.8%); California barracuda, Sphyraena argentea (4.5%); kelp rockfish, Sebastes atrovirens (3.6%); barred sand bass, P. nebulifer (3.2%); halfmoon, Medialuna californiensis (2.6%); and blue rockfish, S. mystinus (2.6%).Data gathered from long-range vessels fishing off Baja California showed the top five species accounted for 94.0% of the fish sampled. The most frequently sampled species were yellowfin tuna, Thunnus albacares (34.4%); yellowtail, Seriola dorsalis (28.7%); wahoo, Acanthocybium solanderi (22.9%); snowy grouper, Epinephelus niveatus (5.9%); and leather bass, E. dermatolepis (2.0%). (69pp.)
    Keywords: Management ; Fisheries
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  • 82
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    Southern California independent sport fishing survey Quarterly Report no. 8 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/81 | 8 | 2011-09-29 22:38:19 | 81 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: During the April 1 - June 30, 1977 quarter, 28 launchramps, hoists, and boat rental locations were sampled300 times. During the sample days 17,354 anglers and853 divers were interviewed. They expended 120,065effort hours and landed 39,369 fishes of 152 identifiedspecies.The ten most commonly landed species were: 1) whitecroaker, Genyonemus lineatus, 25%; 2) Pacific bonito,Sarda chiliensis, 8%; 3) kelp bass, Paralabraxclathratus, 6%; 4) Pacific mackerel, Scomber japonicus,6%; 5) barred sand bass, Paralabrax nebulifer, 4%;6) olive rockfish, Sebastes serranoides, 3%; 7) copperrockfish, S. caurinus, 3%; 8 ) bocaccio, S. paucispinis,3%; 9). vermilion rockfish, S. miniatus, 2%; and 10)greenspotted rockfish, S. chlorostictus, 2%. (22pp.)
    Keywords: Management ; Fisheries
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  • 83
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    Southern California partyboat sampling study Quarterly Report no. 8 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/82 | 8 | 2011-09-29 22:37:24 | 82 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: Between April 1 and June 30, 1977, 125 trips weresampled aboard southern California partyboats by Departmentpersonnel. A total of 14,842 fishes belonging to 72 species was identified and measured. Otoliths wereremoved from 134 rockfish carcasses representing 20species for age deterination studies.The 10 most common species sampled during the quarteraccounted for 76.9% of the catch. Individually, the mostcommon were Pacific mackerel, Scomber japonicus (16.9%);kelp bass, Paralabrax clathratus (14.5%); bocaccio, Sebastes paucispinis (11.4%); Pacific bonito, Sarda chiliensis (10.3%); barred sand bass, Paralabrax nebulifer (5.6%); olive rockfish, Sebastes serranoides (5.3%); chilipepper, S. goodei (4.0%); California barracuda, Sphyraena argentea (2.9%); and ocean whitefish, Caulolatilus princeps (2.8%).Fishing effort switched from "rockcod" to surfaceactivity as it did during the second quarter of 1976 (26pp.)
    Keywords: Management ; Fisheries
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  • 84
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    Southern California partyboat sampling study Quarterly Report no. 7 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/83 | 8 | 2011-09-29 22:37:05 | 83 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: From January 1 through March 31, 1977, Departmentpersonnel made 100 sampling trips aboard southern California partyboats. A total of 16,400 fishes from 68 species was identified and measured.Otoliths, for age determination studies, were removedfrom 301 rockfish carcasses representing 23 species.The 10 most common species sampled during this quarterwere bocaccio, Sebastes paucispinis (38.5%); chilipepper,S. goodei (9.8%); widow rockfish, S. entomelas (7.7%);blue rockfish, S. mystinus (6.2%); olive rockfish, S. serranoides (4.2%); Pacific mackerel, Scomber japonicus (2.8%); vermilion rockfish, Sebastes miniatus (2.7%); speckled rockfish, S. ovalis (2.7%); greenspotted rockfish, S. chlorostictus (2.5%); and squarespot rockfish, S. hopkinsi (2.4%). Fishing effort during this quarter was directed almostexclusively toward "rockcod", as it was for the sameperiod in 1976. (23pp.)
    Keywords: Management ; Fisheries ; sport fishing ; California
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  • 85
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    Southern California partyboat sampling study Quarterly Report no. 3 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/85 | 8 | 2011-09-29 22:37:21 | 85 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: During the period January 1 to March 31, 1976, Departmentpersonnel made 139 sampling trips aboard southern California partyboats. A total of 22,122 fishes from 73 species was identified and measured.Otoliths were removed from 1,536 rockfish carcasses representing 31 species for use in age determination.Sampling personnel tagged and released 68 Californiabarracuda, Sphyraena argentea, and 18 sablefish, Anoplopomafimbria.The five most common species sampled during this periodrepresented approximately 79% of the total number of fishesmeasured. These were, in order of importance; bocaccio,Sebastes paucispinis; chilipepper, Sebastes goodei; oliverockfish, Sebastes serranoides; greenspotted rockfish,Sebastes chlorostictus; and vermilion rockfish, Sebastesminiatus. Bocaccio alone accounted for 52% of the sampledcatch. (15pp.)
    Keywords: Management ; Fisheries
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  • 86
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    Southern California partyboat sampling study Quarterly Report no. 2 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/86 | 8 | 2011-09-29 22:36:47 | 86 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: During the period October 1 - December 31, 1975,Department personnel made 176 sampling trips aboardsouthern California partyboats. A total of 25,721 fishfrom 77 species was identified and measured.Otoliths were removed from 1,767 rockfish carcassesrepresenting 30 species for use in age determination.Sampling personnel tagged and released 192 Californiabarracuda, Sphyraena argentea; 2 white seabass, Cynoscionnobilis; and 29 sablefish, Anoplopoma fimbria.The 10 most common species sampled during this periodrepresented 84% of the total number of fish measured.These were, in order of importance; bocaccio, Sebastespaucispinis; Pacific bonito, Sarda chiliensis; chilipepper,Sebastes goodei; olive rockfish, Sebastes serranoides;vermilion rockfish, Sebastes miniatus, white croaker,Genyonemus lineatus; blue rockfish, Sebastes mystinus;greenspotted rockfish, Sebastes chlorostictus; sculpin,Scorpaena guttata; and Pacific mackerel, Scomber japonicus.Bocaccio alone accounted for 44% of the sampled catch. (20pp.)
    Keywords: Management ; Fisheries
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  • 87
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    Southern California partyboat sampling study Quarterly Report no. 1 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/88 | 8 | 2011-09-29 22:37:03 | 88 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: Estimates of the total yearly catch from the partyboat fishery have been collected and published on a routine basis since 1935. Important data relating to the size and age composition of this segment of the marine sportfishery have been lacking. As a consequence, a southern California partyboat sampling study was initiated on April 1, 1975. The main objective of this sampling is to identify and measure all fishes taken by sportsmen on partyboatswith primary emphasis given to California barracuda, Sphyraena argentea; yellowtail, Seriola dorsalis; white seabass, Cynoscion nobilis; and rockfishes, Sebastes spp. (22pp.)
    Keywords: Management ; Fisheries
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  • 88
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    Results of a private boat angling survey for estimating catch and effort, conducted at Oceanside, California during May and June 1974 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/93 | 8 | 2011-09-29 22:36:45 | 93 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-25
    Description: Two survey methods (postcard and interview) for generating marine fish catch and effort estimates for privateboats were field tested at Oceanside, California duringMay and June of 1974. Sampling days were pre-assigned toweekday and weekend strata. The postcard survey was shownto produce biased estimates. Causes of the various biasesare discussed. The interview survey provided backgrounddata to test for biases in the postcard survey andbetween marina an launch ramp interview areas. (31pp.)
    Keywords: Management ; Fisheries ; Oceanside ; California ; sport fishing
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  • 89
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    Status of major southern California marine sport fish species with management recommendations, based on analyses of catch and size composition data collected on board commercial passenger fishing vessels from 1985 through 1987 (2021)
    California Department of Fish and Game, Marine Resources Division | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/113 | 8 | 2011-09-29 22:35:16 | 113 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-26
    Description: This report on the status of major southern California marine sport fish species, together with management recommendations, is based on analyses of catch and size composition data, which were collected on board Commercial Passenger Fishing Vessels (CPFV) from 1985 through1987. The project was designed to determine the status of those fishes that support the CPFV industry, and to make management recommendations when deemed necessary.We collected and analyzed data based on random, stratified, on-board sampling of weekday (excluding holidays), open CPFV's on a year-round basis. We sampled 1/2-day, 3/4-day, and full-day type trips at a level of 5%. The survey area extended from below the United States-Mexicanborder to Point Arguello. Catch estimates were extrapolated to include weekday as well as weekend and holiday, open and chartered CPFV's.We sampled 736 CPFV trips in 1985, 650 in 1986, and 631 in 1987. We encountered 180 species of fishes, including 49 species of rockfishes. We performed detailed analyses on 14 non-rockfish species and 12 rockfish species, as well as all fishes as a group and all rockfishes as a group.We found a moderate increase in total catch of combined fish species between this study and one in the mid-1970's, due primarily to sizeable increases in catches of Pacific mackerel, kelp bass, barred sand bass,and barracuda. However, we also found that there has been more than a 50% decline in the CPFV rockfish catches, due primarily to substantial decreases in catches of bocaccio, chilipepper, and olive rockfish. We have recommended that the current 15-rockfish bag limit regulation be reduced to a 10-rockfish bag limit, and that additional and equitable conservation measures also be implemented on the commercial rockfish fishery. (385pp.)
    Keywords: Management ; Fisheries ; sport fisheries ; California
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  • 90
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    Status of Pacific Mackerel spawning population, 1976 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/132 | 8 | 2021-02-27 19:36:05 | 132 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-26
    Description: In order to initiate a fishery for the Pacific mackerel, Scomber japonicus, it is required that the spawning biomass be determined to have reached 10,000 short tons. Tag and recovery data and jack mackerel, Trachurus symmetricus, fishery data are analyzed for evidence of an increase in Pacific mackerel population size. The present level of the spawning population of Pacific mackerel, although larger than in recent years, is determined to fall short of the 10,000 tons needed to initiate a fishery. (24pp.)
    Keywords: Management ; Fisheries ; Pacific mackerel ; Scomber japonicus ; Jack Mackerel ; Trachurus symmetricus ; fisheries
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  • 91
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    Southern California partyboat sampling study Quarterly Report no. 6 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/136 | 8 | 2011-09-29 22:32:00 | 136 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-26
    Description: From October through December 1976, Department personnelmade 160 sampling trips aboard southern California partyboats. A total of 25,574 fishes from 80 species was identified and measured. Also, otoliths were removed from 722 rockfish carcasses representing 28 species for use in age determination studies.The 10 most common species sampled were bocaccio, Sebastespaucispinis (33.3%); chilipepper, S. goodei (16.0%); oliverockfish, S. serranoides (6.1%); kelp bass, Paralabrax clathratus (4.6%); blue rockfish, S. mystinus (4.5%); Pacific mackerel, Scomber japonicus (4.4%); widow rockfish, S. entomelas (2.4%); vermilion rockfish, S. miniatus (2.0%); ocean whitefish, Caulolatilus princeps (1.9%); and greenstriped rockfish, S. elongatus (1.9%).The sampled quarter represented a transitional period inthe partyboat fishery during which effort shifted from "surface" fishing to deep water "rockcod" fishing. (23pp.)
    Keywords: Management ; Fisheries
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  • 92
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    Southern California independent sportfishing survey Quarterly Report no. 6 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/137 | 8 | 2011-09-29 22:32:01 | 137 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-26
    Description: During the October 1 - December 31, 1976 quarter,28 launch ramps, hoists, and boat rental locations were sampled a total of 182 times. During the sample days 8,299 anglers and 1,172 divers were interviewed. They expended 62,073 effort hours and landed 26,788 fishes of 149species.The ten most commonly landed species were: 1)white croaker, Genyonemus lineatus, 14%; 2) oliverockfish, Sebastes serranoides, 6%; 3) Pacificmackerel, Scomber japonicus, 5%; 4) rock scallop,Hinnites multirugosus, 4%; 5) bocaccio, Sebastespaucispinis, 4%; 6) copper rockfish, S. caurinus,4%; 7) red abalone, Haliotis rufescens, 3%;8)kelp bass, Paralabrax clathratus, 3%; 9) barred sand bass, P. nebulifer, 3%; and 10)ocean whitefish, Caulolatilus princeps, 3%. (22pp.)
    Keywords: Management ; Fisheries ; sportfishing ; California
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  • 93
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    Southern California independent sport fishing survey Quarterly Report No. 7 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/145 | 8 | 2011-09-29 22:31:16 | 145 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-26
    Description: During the January 1 - March 31, 1977 quarter,28 launch ramps, hoists and boat rental locations were sampled 166 times. During the sample days 9,209 anglers and 496 divers were interviewed. They expended 61,347 effort hours and landed 22,454 fishes of 133 identified species.The ten most commonly landed species were: 1) white croaker, Genyonemus lineatus, 16%; 2) Pacific bonito, Sarda chiliensis, 7%; 3) blue rockfish, Sebastes mystinus, 5%; 4) olive rockfish, S. serranoides, 5%; 5) ocean whitefish, Caulolatilus princeps, 5%; 6) barred sand bass, Paralabrax nebulifer, 5%; 7) Pacific mackerel, Scomberjaponicus, 3%; 8) bocaccio, Sebastes paucispinis, 3%; 9) kelp bass, Paralabrax clathratus, 3%; and10) copper rockfish, Sebastes caurinus, 3%. (23pp.)
    Keywords: Management ; Fisheries
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  • 94
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    Southern California partyboat sampling study Quarterly Report No. 5 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/157 | 8 | 2011-09-29 22:30:35 | 157 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-26
    Description: From l July through 30 September, 1976, Department personnelmade 138 sampling trips aboard southern Californiapartyboats. A total of 15,827 fishes from 75 species wasidentified and measured.Otoliths were removed from 290 rockfish carcasses representing 23 species for use in age determination studies.The 10 most common species sampled during this quarterwere kelp bass, Paralabrax clathratus (22.9%); barred sandbass, P. nebulifer (13.7%); olive rockfish, Sebastes serranoides (12.0%); bocaccio, S. paucispinis (1l.6%); Pacific bonito, Sarda chiliensis (6.6%); California barracuda, Sphyraena argentea (5.9%); white croaker, Genyonemus lineatus (4.5%); blue rockfish, S. mystinus (2.9%); brown rockfish, S. auriculatus (2.8%); and ocean whitefish, Caulolatilus princeps (2.8%).Preliminary results from California partyboat logs indicate landings of Pacific bonito, California barracuda, kelp bass, and barred sand bass were significantly larger than those of 1975, while the low catch rates of yellowtail and white seabass remained approximately equal to those of the previous season. (27pp.)
    Keywords: Management ; Fisheries
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  • 95
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    Southern California independent sportfishing survey Quarterly Report No. 5 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/151 | 8 | 2011-09-29 22:30:39 | 151 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-26
    Description: During the July 1 - September 30, 1976 quarter, 28launch ramps, hoists, and boat rental locations weresampled a total of 324 times. During the sample days26,136 anglers and 1,353 divers were interviewed. Theyexpended 188,251 effort hours and landed 63,942 fishesof 162 species.The ten most commonly landed species were: 1) whitecroaker, Genyonemus lineatus, 27%; 2) Pacific bonito,Sarda chiliensis, 7%; 3) kelp bass, Paralabrax clathratus,7%; 4) olive rockfish, Sebastes serranoides, 4%;5) bocaccio, S. paucispinis, 4%; 6) barred sand bass,Paralabrax nebulifer, 4%; 7) California barracuda,Sphyraena argentea, 3%; 8) copper rockfish, Sebastescaurinus, 2%; 9) kelp rockfish, S. atrovirens, 2%;10) vermilion rockfish, S. miniatus, 2%. (22pp.)
    Keywords: Management ; Fisheries ; sportfishing ; California
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  • 96
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    Southern California partyboat sampling study Quarterly Report No. 4 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/150 | 8 | 2011-09-29 22:30:37 | 150 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-26
    Description: From 1 April through 30 June, 1976, Departmentpersonnel made 146 trips aboard southern Californiapartyboats. A total of 18,218 fishes from 76 specieswas identified and measured.Otoliths were removed from 674 rockfish carcassesfor use in age determination studies.The 10 most common species sampled during thisquarter represented 85.2% of the total number of fishesmeasured. These were, in order of importance: bocaccio,Sebastes paucispinis; kelp bass, Paralabrax clathratus;Pacific bonito, Sarda chiliensis; barred sand bass,Paralabrax nebulifer; chilipepper, Sebastes goodei;California barracuda, Sphyraena argentea; olive rockfish;Sebastes serranoides; white croaker, Genyonemus lineatus;ocean whitefish, Caulolatilus princeps; and vermilionrockfish, Sebastes miniatus. Pacific bonito and California barracuda partyboatlandings exceeded those of the entire 1975 season, andsampling data indicate the average length of barracudacaught from partyboats was significantly larger thanthat of the previous season. (15pp.)
    Keywords: Management ; Fisheries
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  • 97
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    California commercial lobster fishery 1973-1974 season (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/219 | 8 | 2011-09-29 22:27:05 | 219 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-27
    Description: (17pp.)
    Keywords: Management ; Fisheries ; Lobster ; commercial fisheries
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  • 98
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    Status of Pacific Mackerel spawning population, 1974 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/217 | 8 | 2011-09-29 22:26:39 | 217 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-27
    Description: This is the second annual report on the status of the spawning population of the Pacific mackerel as required by Section 8388.3 of the Fish and Game Code.During 1973 and early 1974, several methods of determining population size were used to estimate the spawning population size of Pacific mackerel stocks north of Point Eugenia, Baja California. The estimated Pacific mackerel spawning population obtained by tagging procedures was 2,025 tons. Two alternate spawning biomass estimates also were obtained using partyboat catches fitted to regressionlines. The estimates derived by these alternate methodsare 4,675 tons, and 8,380 tons.All 1974 estimates are below the 10,000 ton spawning population minimum set in Section 8388.3 of the Fish and Game Code and thus no harvest under Section 8388.5 of the Fish and Game Code could be allowed. (10pp.)
    Keywords: Management ; Fisheries ; Biology ; Scomber japonicus ; Pacific mackerel
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
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  • 99
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    Southern California marine sport fishing from privately-owned boats; Catch and effort for January-March 1981 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/459 | 8 | 2011-09-29 22:01:33 | 459 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-29
    Description: The catch landed and effort expended by private-boatsport fishermen were studied in southern Californiabetween January and March 1981, in order to determinethe impact of one segment of the sport fishery on localmarine resources. Fishermen returning from fishing tripswere interviewed at launch ramps, hoists, and boat rentalfacilities. This report contains quantitative data andstatistical estimates of total effort, total catch, catchof preferred species, and length frequencies for thosespecies whose catches are regulated by minimum size limits.An estimated 139,000 organisms were landed by 45,000anglers and 1,900 divers. The major components of thecatch were Pacific mackerel, Scomber japonicus, 29,000landed; white croaker, Genyonemus lineatus, 27,000 landed;and Pacific bonito, Sarda chiliensis, 13,000 landed. These three species comprised one-half of the total catch.Anglers' compliance with size limit regulations was variable. Approximately 87% of all measured bass,Paralabrax spp., were legal size, but only 60% of theCalifornia halibut, Paralichthys californicus, were legalsize. Divers showed much better compliance with the sizelimit regulations: 96% of all red abalone, Haliotisrufescens, were legal size. (Document has 24 pages)
    Description: 24pp.
    Keywords: Management ; Fisheries ; Pacific mackerel ; Scomber japonicus ; white croaker ; Genyonemus lineatus ; Pacific bonito ; Sarda chiliensis ; California halibut ; Paralichthys californicus ; red abalone ; Haliotis rufescens
    Repository Name: AquaDocs
    Type: monograph
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  • 100
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    Southern California marine sport fishing from privately-owned boats: Catch and effort for April-June 1981 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/460 | 8 | 2011-09-29 22:01:31 | 460 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-29
    Description: The catch landed and effort expended by private-boatsport fishermen were studied in southern Californiabetween April and June 1981, in order to determine theimpact of one segment of the sport fishery on local marineresources. Fishermen returning from fishing trips wereinterviewed at launch ramps, hoists, and boat-rentalfacilities. This report contains quantitative data andstatistical estimates of total effort, total catch, catchof preferred species, and length frequencies for thosespecies whose catches are regulated by minimum size limits.An estimated 310,000 organisms were landed by 106,000anglers and 4,000 divers (more than twice the catch andeffort estimated for the previous 3-month period). Themajor components of the catch were Pacific mackerel, Scomberjaponicus, 63,000 landed; bass, Paralabrax spp., 61,000landed; white croaker, Genyonemus lineatus, 52,000 landed,and Pacific bonito, Sarda chiliensis, 35,000 landed. Thesespecies contributed 70% of the total catch.Anglers' compliance with size limit regulations was variable. Approximately 89% of all measured bass were legal size. The proportion of legal size California halibut, Paralichthys californicus, rose from 60% last quarter to 79% this quarter. However, the percent of legal size California barracuda, Sphyraena argentea, was very low, 58%. Divers' compliance with minimum size limits dropped slightly: abalone, Haliotis spp., averaged 89% legal. (Document has 31 pages)
    Description: 31pp.
    Keywords: Management ; Fisheries ; Pacific mackerel ; Scomber japonicus ; bass ; Paralabrax spp. ; white croaker ; Genyonemus lineatus ; Pacific bonito ; Sarda chiliensis ; California halibut ; Paralichthys californicus ; California barracuda ; Sphyraena argentea ; abalone ; Haliotis spp.
    Repository Name: AquaDocs
    Type: monograph
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