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  • 1
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    River Lynher SAP Final Plan (2021)
    Environment Agency | Cornwall, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11109 | 1256 | 2013-04-06 16:11:25 | 11109 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This is the River Lynher Salmon Action Plan Final document produced by the Environment Agency in 1999. This final Salmon Action Plan (SAP) for the River Lynher 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 Lynher salmon stock. The actions presented within this final 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. The River Lynher salmon stock has suffered two periods of spawning target failure within the past ten years. This assessment can only be estimated and in this case is likely to be dependent on river flow and the availability of salmon to the rods as only rod catch is used in the compliance assessment.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; Cornwall ; River Lynher ; Inland waters ; Freshwater fish ; Migratory species ; Salmon Action Plan ; Fishery data ; Fishery management ; Fishery regulations ; Nature conservation ; Water quality ; Spawning targets
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 12
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  • 2
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    River Tavy SAP Final Plan (2021)
    Environment Agency | Cornwall, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11114 | 1256 | 2013-04-06 16:10:41 | 11114 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This is the River Tavy Salmon Action Plan Final document produced by the Environment Agency in 2000. This final Salmon Action Plan (SAP) for the River Tavy 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 Tavy 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 Action Plan aims to promote long term collaboration and co-operation between the Agency and other interested parties to effectively and efficiently manage the stock of salmon on the River Tavy.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; Cornwall ; River Tavy ; Inland waters ; Freshwater fish ; Migratory species ; Salmon Action Plan ; Fishery data ; Fishery management ; Fishery regulations ; Nature conservation ; Water quality ; Spawning targets
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 11
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  • 3
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    River Plym SAP Final Plan (2021)
    Environment Agency | Cornwall, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11111 | 1256 | 2013-04-06 16:11:08 | 11111 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This is the River Plym Salmon Action Plan Final document produced by the Environment Agency in 2003. This final Salmon Action Plan (SAP) for the River Plym 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 Lynher salmon stock. These issues and actions follow on from the detailed analysis of the catchment, which is presented in the River Plym SAP Consultation document.The actions presented within this final 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. The main objective of the River Plym SAP therefore, is to maintain, improve and develop the River Plym salmon stocks to a sustainable level that, on the basis of historic catch records, the catchment can clearly support. The River Plym has failed to pass its conservation limit since 1996, and the consultees felt very strongly that there were three major factors limiting the salmon stock of the River Plym.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; Cornwall ; River Plym ; Inland waters ; Freshwater fish ; Migratory species ; Salmon Action Plan ; Fishery data ; Fishery management ; Fishery regulations ; Nature conservation ; Water quality ; Spawning target
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 14
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  • 4
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    River Camel SAP Consultation (2021)
    Environment Agency South West Region | Cornwall, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11104 | 1256 | 2013-04-06 16:13:29 | 11104 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This is the River Camel Salmon Action Plan produced by the Environment Agency in 2002. The report focuses on the River Camel Salmon Action Plan (SAP). The River Camel SAP follows the format of those completed for the Rivers Tamar, Lynher and Tavy. It is the 4th of 7 action plans that will be produced for salmon rivers managed by the Cornwall Area Fisheries, Recreation and Biodiversity Team. 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. In addition, for the first time, Salmon Action Plans have attempted to evaluate in economic terms, all of the contributory components of the salmon fishery. The River Camel Salmon Action Plan contains a description of the river catchment and highlights particular features that are relevant to the salmon population and associated fishery.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; Management ; England ; Cornwall ; River Camel ; Inland waters ; Freshwater fish ; Migratory species ; Salmon Action Plan ; Fishery data ; Fishery management ; Fishery regulations ; Nature conservation ; Water quality ; Spawning targets
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 52
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  • 5
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    River Fowey SAP Consultation (2021)
    Environment Agency | Cornwall, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11106 | 1256 | 2013-04-06 16:11:53 | 11106 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This is the River Fowey Salmon Action Plan Consultation document produced by the Environment Agency in 2003. The report pays attention on the external consultation of the River Fowey Salmon Action Plan (SAP). The River Fowey SAP follows the format of those completed for the Rivers Tamar, Lynher, Tavy and Camel. It is the 5th of 7 action plans that will be produced for salmon rivers managed by the Cornwall Area Fisheries, Recreation and Biodiversity Team. 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 Fowey SAP contains a description of the river catchment and highlights particular features that are relevant to the salmon population and the associated fishery. Notably, there are historic workings for copper and china clay and two significant potable supply reservoirs (Siblyback and Colliford) which have been constructed within the catchment during the past 35 years. The whole of the Fowey catchment is set at the highest water quality grading of RE1 and this standard is met in all reaches of the River Fowey and its tributaries.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; Cornwall ; River Fowey ; Inland waters ; Freshwater fish ; Migratory species ; Salmon Action Plan ; Fishery data ; Fishery management ; Fishery regulations ; Nature conservation ; Water quality
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 64
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  • 6
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    River Tamar SAP Consultation (2021)
    Environment Agency | Cornwall, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11112 | 1256 | 2013-04-06 16:10:59 | 11112 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This is the River Tamar Salmon Action Plan Consultation document produced by the Environment Agency in 1998. The report pays attention on the external consultation of the River Tamar 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 Tamar was one of the premier salmon rivers in the West Country, supporting fifteen licensed estuary nets, and the second highest rod catch behind the River Exe. The River Tamar 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 ; River Tamar ; 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
    Format: application/msword
    Format: application/msword
    Format: 51
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  • 7
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    River Camel SAP Final Plan (2021)
    Environment Agency | Cornwall, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11105 | 1256 | 2013-04-06 16:12:01 | 11105 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This is the River Camel Salmon Action Plan Final document produced by the Environment Agency in 2002. This final Salmon Action Plan (SAP) for the River Camel 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 Camel 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 Action Plan aims to promote long term collaboration and co-operation between the Agency and other interested parties to effectively and efficiently manage the stock of salmon on the River Camel.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; Cornwall ; River Camel ; Inland waters ; Freshwater fish ; Migratory species ; Salmon Action Plan ; Fishery data ; Fishery management ; Fishery regulations ; Nature conservation ; Water quality ; Spawning targets
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 11
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  • 8
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    Gunnislake Fish Counter. Annual Report 1999 (2021)
    Environment Agency South West Region | Cornwall, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10904 | 1256 | 2013-03-22 13:40:38 | 10904 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-01
    Description: This is the Gunnislake Fish Counter, Annual Report 1999 produced by the Environment Agency South West Region on March 2000. The report presents the daily upstream counts of migratory salmonids recorded at Gunnislake Weir fish counting station (SX 435 713) situated on the River Tamar in 1999. The counter data contained within this report covers the period of the commercial migratory salmonid net buy-back scheme and the implementation of the National Spring Salmon Byelaws. The fish counter at Gunnislake is a resistivity based system (Logie 2100A – Aquantic limited) and is installed in the fish pass on the Cornish bank of the River Tamar at the head of the tide. The minimum salmon count for 1999 was 2691. The run pattern observed for salmon and sea trout in 1999 was generally consistent with that of previous years. However, the total combined annual count of salmon and sea trout migrating upstream on the River Tamar in 1999 was 25% higher than the 5 year average (1994 - 1998).
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; Management ; England ; Tamar ; Migratory species ; Fish counters ; Population dynamics
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 31
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  • 9
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    Restormel Annual Report 2001 (2021)
    Environment Agency South West Region | Cornwall, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10908 | 1256 | 2013-03-22 13:38:29 | 10908 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-01
    Description: This is the Restormel Fish Counter, Annual Report 2001 produced by the Environment Agency South West Region on March 2002. The report presents the daily upstream counts of migratory salmonids on the River Fowey at Restormel Weir fish counting station (SX 107 613) in 2001. The counter data covers the period of the commercial salmonid net buy back scheme and the national spring salmon byelaws. These reduce the commercial netting season for salmon and sea trout to between 16 June and 31 August. The fish counter at Restormel is installed on a crump sectioned weir on the River Fowey. The fish counter is a resistivity based system and operates over all three channels of the weir. 2001 was a good year for large sea trout. The number of returning large sea trout was above average in April, May, June and July and equal to or higher than the previous recorded maximum in those months. The main run of small sea trout occurred at a similar time to previous years with the highest numbers of fish entering the Fowey during June and July.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; Management ; England ; Fowey ; Migratory species ; Fish counters ; Population dynamics
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 41
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  • 10
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    Restormel Fish Counter Annual Report 2007 (2021)
    Environment Agency South West Region | Cornwall, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10928 | 1256 | 2013-03-22 13:32:54 | 10928 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-02
    Description: This is the Restormel Fish Counter, Annual Report 2007 produced by the Environment Agency South West Region on March 2008. The report presents the upstream counts of migratory salmonids recorded on the River Fowey at Restormel Weir fish counting station (SX 107 613) over the period March 2007 to February 2008 inclusive. Data contained within this report covers the period of the commercial migratory salmonid net buy-back scheme and the National Spring Salmon Byelaws (2 March- 15 June). The minimum upstream salmon estimate for 2007, over the period July 2007 to February 2008, was 796, which is the fifth highest recorded count over the past 13 years. The number of returning salmon in 2007 suggests a downward trend in numbers since 2004. The 2007 large sea trout count is similar to 2006. Overall, the number of fish returning is still low in comparison with the 10-year average. There was a noticeable decrease in the number of small sea trout returning compared to 2006 and the 10-year average. The Fish counter at Restormel suffered several faults.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; Fowey ; Migratory species ; Fish counters ; Population dynamics
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 37
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  • 11
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    Restormel Fish Counter Annual Report 2006 (2021)
    Environment Agency South West Region | Cornwall, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10927 | 1256 | 2013-03-22 13:33:18 | 10927 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-02
    Description: This is the Restormel Fish Counter, Annual Report 2006 produced by the Environment Agency South West Region on March 2007. The report presents the upstream counts of migratory salmonids recorded on the River Fowey at Restormel weir fish counting station (SX 107 613) over the period March 2006 to February 2007 inclusive. Data contained within this report covers the period of the commercial migratory salmonid net buy-back scheme and the National Spring Salmon Byelaws (2 March- 15 June inclusive). The minimum upstream salmon estimate for 2005 (1046), over the period July 2005 to February 2006, was 20% lower than that recorded over the same period in 2004 (1301). However, this is the second highest count recorded over the past 11 years. The total sea trout count (10448) was 8% higher than 2004 (9608). The number of salmon and large sea trout was lower than average in 2005. However, the overall numbers of adult salmon and sea trout returning have been increasing year on year since 1997. This overall increase in the salmon and sea trout counts, together with the consistency of the numbers of fish returning over recent years suggests that measures designed to protect salmonid stocks in the River Fowey are working.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; Fowey ; Migratory species ; Fish counters ; Population dynamics
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 26
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  • 12
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    Restormel Fish Counter Annual Report 2003 (2021)
    Environment Agency South West Region | Cornwall, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10925 | 1256 | 2013-03-22 13:33:41 | 10925 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-02
    Description: This is the Restormel Fish Counter, Annual Report 2003 produced by the Environment Agency South West Region on March 2004. The report presents the daily upstream counts of migratory salmonids recorded on the River Fowey at Restormel weir fish counting station (SX 107 613) in 2003. Data contained within this report covers the period of the commercial migratory salmonid net buy-back scheme and the National Spring Salmon Bylaws. The run pattern observed for salmon and sea trout in 2003 was generally consistent with that of previous years. The upstream salmon / large sea trout count for 2003 was 1777, 2% lower than that recorded in 2002. The overall increase in the salmon and sea trout counts, together with the consistency of the numbers over recent years suggests that measures designed to protect salmonid stocks were working.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; Fowey ; Migratory species ; Fish counters ; Population dynamics
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 23
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  • 13
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    Restormel Fish Counter Annual Report 2008 (2021)
    Environment Agency South West Region | Cornwall, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10929 | 1256 | 2013-03-22 13:32:35 | 10929 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-02
    Description: This is the Restormel Fish Counter, Annual Report 2008 produced by the Environment Agency South West Region on April 2009. The report presents the upstream counts of migratory salmonids recorded on the River Fowey at Restormel Weir fish counting station (SX 107 613) over the period March 2008 to February 2009 inclusive. Data contained within this report covers the period of the commercial migratory salmonid net buy-back scheme and the National Spring Salmon Byelaws. The minimum upstream salmon estimate for 2008, over the period July 2008 to February 2009, was 938 and is the third highest recorded count over the past 14 years. The 2008 large sea trout count (482) shows a marked improvement in the number of returning fish when compared to 2007 (241). There was a significant decrease in the number of small sea trout returning in 2008 when compared to 2007 and the 10-year average.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; Fowey ; Migratory species ; Fish counters ; Population dynamics
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 38
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  • 14
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    Restormel Fish Counter Annual Report 2002 (2021)
    Environment Agency | Cornwall, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10923 | 1256 | 2013-03-22 13:33:59 | 10923 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-02
    Description: This is the Restormel Fish Counter, Annual Report 2002 produced by the Environment Agency South West Region on March 2003. The report presents the daily upstream counts of migratory salmonids recorded on the River Fowey at Restormel Weir fish counting station (SX 107 613) in 2002. Data contained within this report covers the period of the commercial migratory salmonid net buy-back scheme and the National Spring Salmon Bylaws. The fish counter at Restormel is a resistivity based system (Logie 2100A - Aquantic limited) and is installed on the weir at Restormel approximately 2 km upstream of the tidal limit. The run pattern observed for salmon and sea trout in 2002 was generally consistent with that of previous years. The upstream salmon / large sea trout count for 2002 was 1804.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; Management ; England ; Fowey ; Migratory species ; Fish counters ; Population dynamics
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 41
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  • 15
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    River Fowey SAP Final Plan (2021)
    Environment Agency | Cornwall, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11107 | 1256 | 2013-04-06 16:11:45 | 11107 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This is the River Fowey Salmon Action Plan Final document produced by the Environment Agency in 2003. This final Salmon Action Plan (SAP) for the River Fowey 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 Fowey salmon stock. The actions presented within this final 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. The main objective of the Fowey SAP therefore, is to maintain, improve and develop the Fowey salmon stocks to a sustainable level that, on the basis of historic catch records, the catchment can clearly support. Although the Fowey is passing its conservation limit, the consultees felt very strongly that there were two major factors limiting the salmon stock of the River Fowey- the overgrazing of Bodmin Moor and the use of the catchment for water supply by South West Water.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; Cornwall ; River Fowey ; Inland waters ; Freshwater fish ; Migratory species ; Conservation limit ; Salmon Action Plan ; Fishery data ; Fishery management ; Fishery regulations ; Nature conservation ; Water quality ; Spawning targets
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
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    Format: 17
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  • 16
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    River Lynher SAP Consultation (2021)
    Environment Agency | Cornwall, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11108 | 1256 | 2013-04-06 16:13:04 | 11108 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This is the River Lynher Salmon Action Plan Consultation document produced by the Environment Agency in 1998. The report pays attention on the external consultation of the River Lynher Salmon Action Plan (SAP). The River Lynher SAP follows that for the River Tamar and is the second of seven action plans that will be produced for salmon rivers managed by the Cornwall area fisheries department. 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 Lynher SAP contains a description of the river catchment and highlights particular features that are relevant to the salmon population and the associated fishery. The analysis of recent and historical catches of salmon on the River Lynher from both the rod and net fisheries indicated the fishery's reliance upon post 1 June salmon. Historically, annual salmon catches (both rod and net) on the River Lynher have been found to consist of a much higher proportion of pre 1 June (spring) salmon. Evidence is provided that illustrates the extent of the decline within this stock component since the early 1980s.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; Cornwall ; River Lynher ; 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
    Format: application/pdf
    Format: application/pdf
    Format: 54
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  • 17
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    Restormel Fish Counter Annual Report 1999 (2021)
    Environment Agency South West Region | Cornwall, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10905 | 1256 | 2013-03-22 13:39:13 | 10905 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-01
    Description: This is the Restormel Fish Counter, Annual Report 1999 produced by the Environment Agency South West Region on March 2000. The report presents the daily upstream counts of migratory salmonids recorded at Restormel Weir counting station (SX 107 613) River Fowey in 1999. The counter data covers the period of the commercial migratory salmonid net buy-back scheme, which was in operation between March and June 1999. The fish counter is a resistivity based system (Logie 2100 A - Aquantic limited) and operates over all three channels of the weir at Restormel. The minimum salmon count estimate was 497, and the 1999 upstream count for sea trout was 6590. The run pattern observed for salmon and sea trout in 1999 was generally consistent with that of previous years. Flows on average were half those of 1998 during September, October, and November.
    Description: : Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; Management ; England ; Fowey ; Migratory species ; Fish counters ; Population dynamics
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
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  • 18
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    Gunnislake Annual Report 2001 (2021)
    Environment Agency South West Region | Cornwall, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10907 | 1256 | 2013-03-22 13:39:40 | 10907 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-01
    Description: This is the Gunnislake Fish Counter, Annual Report 2001 produced by the Environment Agency South West Region on March 2002. The report presents the daily upstream counts of migratory salmonids recorded on the River Tamar at Gunnislake Weir fish counting station (SX 435 713) situated in 2001. Data contained within this report covers the period of the commercial migratory salmonid net buy-back scheme and the National Spring Salmon Byelaws. The fish counter at Gunnislake is a resistivity based system (Logie 2100A – Aquantic limited) and is installed in the fish pass on the Cornish bank of the River Tamar at the head of the tide. The minimum salmon count for 2001 was 3138. The 2001 upstream count for sea trout was 7503. The run pattern observed for salmon and sea trout in 2001 was generally consistent with that of previous years.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; Management ; England ; Tamar ; Migratory species ; Fish counters ; Population dynamics
    Repository Name: AquaDocs
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    River Plym SAP Consultation (2021)
    Environment Agency | Cornwall, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11110 | 1256 | 2013-04-06 16:11:17 | 11110 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This is the River Plym Salmon Action Plan Consultation document produced by the Environment Agency in 2003. The report pays attention on the external consultation of the River Plym 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 Plym SAP follows the format of those completed for the rivers Tamar, Lynher, Tavy, Camel and Fowey. It is the sixth of seven action plans that will be produced for salmon rivers managed by Cornwall Area. The River Plym SAP contains a description of the river catchment and highlights particular features that are relevant to the salmon population and the associated fishery. Notably, there are historic workings for china clay and a significant potable water supply at Burrator Reservoir. The main River Plym has been designated as River Ecosystem class 1 for its water quality objectives. This is the highest water quality target set for rivers. This standard has been met in all reaches of the main River Plym and River Meavy.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; Cornwall ; River Plym ; 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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    River Tavy SAP Consultation (2021)
    Environment Agency | Cornwall, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11113 | 1256 | 2013-04-06 16:10:50 | 11113 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This is the River Tavy Salmon Action Plan Consultation document produced by the Environment Agency in 1999. The report pays attention on the external consultation of the River Tavy 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. In addition, salmon action plans have for the first time, attempted to evaluate in economic terms, all of the contributory components of the salmon fishery. The River Tavy Salmon Action Plan follows that for the River Tamar and River Lynher and is the third of seven action plans that will be produced for salmon rivers managed by the Cornwall Area FER department. The River Tavy 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 ; River Tavy ; 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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    River Yealm SAP Final Plan (2021)
    Environment Agency | Cornwall, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11115 | 1256 | 2013-04-06 16:10:33 | 11115 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This is the River Yealm Salmon Action Plan Final document produced by the Environment Agency in 2003. This final Salmon Action Plan (SAP) for the River Yealm 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 Yealm 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. The main objective of the River Yealm SAP is to maintain, improve and develop the River Yealm salmon stocks to a sustainable level that, on the basis of historic catch records, the catchment can clearly support.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; Cornwall ; River Yealm ; 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 Yealm SAP Consultation (2021)
    Environment Agency | Cornwall, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11116 | 1256 | 2013-04-06 16:10:23 | 11116 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This is the River Yealm Salmon Action Plan Consultation document produced by the Environment Agency in 2003. The report pays attention on the external consultation of the River Yealm 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 Yealm Salmon Action Plan follows the format of those completed for the rivers Tamar, Lynher, Tavy, Camel, Fowey and Plym. It is the final one of seven action plans that will be produced for salmon rivers managed by Cornwall Area. The River Yealm SAP contains a description of the river catchment and highlights particular features that are relevant to the salmon population and the associated fishery. Notably there are potable water abstractions in the headwaters, workings for china clay on the main tributary, two inert waste landfill sites and an aggregate quarry adjacent to the main river and inputs from several Sewage Treatment Works (STW) and two industrial estates. The main River Yealm has been designated as River Ecosystem Class 1 for its water quality objectives. This is the highest water quality target set for rivers.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; Cornwall ; River Yealm ; 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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    Gunnislake Fish Counter Annual Report 2000 (2021)
    Environment Agency South West Region | Cornwall, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10906 | 1256 | 2013-03-22 13:40:07 | 10906 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-01
    Description: This is the Gunnislake Fish Counter, Annual Report 2000 produced by the Environment Agency South West Region on March 2001. The report presents the daily upstream counts of migratory salmonids recorded on the River Tamar at Gunnislake Weir fish counting station (SX 435 713) situated in 2000. Data contained within this report covers the period of the commercial migratory salmonid net buy-back scheme and the National Spring Salmon Byelaws. The fish counter at Gunnislake is a resistivity based system (Logie 2100A – Aquantic limited) and is installed in the fish pass on the Cornish bank of the River Tamar at the head of the tide. The minimum salmon count for 2000 was 2654. The 2000 upstream count for sea trout was 6417. The run pattern observed for salmon and sea trout in 2000 was generally consistent with that of previous years.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; Management ; England ; Tamar ; Migratory species ; Fish counters ; Population dynamics
    Repository Name: AquaDocs
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    Gunnislake Fish Counter Annual Report 2003 (2021)
    Environment Agency South West Region | Cornwall, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10924 | 1256 | 2013-03-22 13:37:09 | 10924 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-02
    Description: This is the Gunnislake Fish Counter, Annual Report 2003 produced by the Environment Agency South West Region on March 2004. The report presents the daily upstream counts of migratory salmonids recorded at Gunnislake weir fish counting station and trap (River Tamar SX 435 713) in 2003. Data contained within this report covers the period of the commercial migratory salmonid net buy-back scheme and the National Spring Salmon Bylaws. The total combined annual count of upstream migrating salmon and sea trout on the River Tamar in 2003 was 7% higher than the 9-year average. The minimum salmon count for 2003 was 3626. The 2003 upstream count for sea trout was 9913. Trap data for 2003 is consistent with historic trapping and net data in terms of the size split between salmon and sea trout stocks.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; Tamar ; Migratory species ; Fish counters ; Population dynamics
    Repository Name: AquaDocs
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    Gunnislake Fish Counter Annual Report 2002 (2021)
    Environment Agency South West Region | Cornwall, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10922 | 1256 | 2013-03-22 13:36:12 | 10922 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-02
    Description: This is the Gunnislake Fish Counter Annual Report 2002 from the Environment Agency South West Region, which was held on March 2002. It presents the daily upstream counts of migratory salmonids recorded on the River Tamar at Gunnislake Weir fish counting station in 2002. The data within this report covers the period of the commercial migratory salmonid net buy-back scheme and the National Spring Salmon Bylaws. The report contains section on Net Buy-Back; Species Apportionment; Validation of counter efficiency; results as total number of migratory salmonid (salmon and Sea Trout) counted moving upstream in 2002 at Gunnislake; video validation and Counter Efficiency; and Discussion. The section Discussion includes Salmon and Sea Trout counts recorded on the River Tamar 1995-2002, other fish species observed as sea lamprey and Environmental Factors (river flows, water temperature, and barometric pressure).
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; Tamar ; Migratory species ; Fish counters ; Population dynamics
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    Restormel Fish Counter Annual Report 2005 (2021)
    Environment Agency South West Region | Cornwall, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10926 | 1256 | 2013-03-22 13:33:29 | 10926 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-02
    Description: This is the Restormel Fish Counter, Annual Report 2005 produced by the Environment Agency South West Region on March 2006. The report presents the upstream counts of migratory salmonids recorded on the River Fowey at Restormel weir fish counting station (SX 107 613) over the period March 2005 to February 2006 inclusive. Data contained within this report covers the period of the commercial migratory salmonid net buy-back scheme and the National Spring Salmon Byelaws (from 2 March to 15 June Inclusive). The minimum upstream salmon estimate for 2005 was 1046, this is the second highest count recorded over the past 11 years. The total sea trout count (10448) was 8% higher than 2004 (9608). This overall increase in the salmon and sea trout counts, together with the consistency of the numbers of fish returning over recent years suggests that measures designed to protect salmonid stocks in the River Fowey are working.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; Fowey ; Migratory species ; Fish counters ; Population dynamics
    Repository Name: AquaDocs
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    Restormel Fish Counter Annual Report 2008 (2021)
    Environment Agency South West Region | Cornwall, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10930 | 1256 | 2013-03-26 14:02:51 | 10930 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-02
    Description: This is the Restormel Fish Counter, Annual Report 2008 produced by the Environment Agency South West Region on April 2009. The report presents the upstream counts of migratory salmonids recorded on the River Fowey at Restormel Weir fish counting station (SX 107 613) over the period March 2008 to February 2009 inclusive. Data contained within this report covers the period of the commercial migratory salmonid net buy-back scheme and the National Spring Salmon Byelaws. The minimum upstream salmon estimate for 2008, over the period July 2008 to February 2009, was 938, which is the third highest recorded count over the past 14 years. The 2008 large sea trout count (482) shows a marked improvement in the number of returning fish when compared to 2007 (241). There was a significant decrease in the number of small sea trout returning in 2008 when compared to 2007 and the 10-year average. The fish counter suffered several faults equated to 12.5 days during this period.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; Fowey ; Migratory species ; Fish counters ; Population dynamics
    Repository Name: AquaDocs
    Type: monograph
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    Restormel Fish Counter Annual Report 2010 (2021)
    Environment Agency South West Region | Cornwall, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10931 | 1256 | 2013-03-26 14:02:00 | 10931 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-02
    Description: This is the Restormel Fish Counter, Annual Report 2010 produced by the Environment Agency South West Region on June 2011. The report presents the upstream counts of migratory salmonids recorded on the River Fowey at Restormel Weir fish counting station (SX 107 613) over the period March 2010 to February 2011 inclusive. Data contained within this report covers the period of the commercial migratory salmonid net buy-back scheme and the National Spring Salmon Byelaws. The minimum upstream salmon estimate for 2010, over the period July 2010 to February 2010, was 1220. The fish counter at Restormel suffered from only one major period of unscheduled downtime during 2010/2011. This was due to a counter fault over the period 21 to 30 August 2010 and equated to 10 days of downtime.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; Fowey ; Migratory species ; Fish counters ; Population dynamics
    Repository Name: AquaDocs
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    Restormel Fish Counter Annual Report 2011 (2021)
    Environment Agency South West Region | Cornwall, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10932 | 1256 | 2013-03-26 14:01:47 | 10932 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-02
    Description: This is the Restormel Fish Counter, Annual Report 2011 produced by the Environment Agency, Environmental Monitoring Team on May 2012. The report presents the upstream counts of migratory salmonids recorded on the River Fowey at Restormel Weir fish counting station (SX 107 613) over the period March 2011 to February 2012 inclusive. The minimum upstream salmon estimate for 2011, over the period July 2011 to February 2012, was 675. The minimum upstream sea trout estimate for 2011 was 10,022, which is the fifth highest count recorded in the last 17 years. The fish counter at Restormel had six periods of downtime due to counter faults which equated to 19 days of downtime overall. Fish counts were estimated for downtime caused by counter faults but not for weir cleaning due to the small numbers of fish involved.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; Fowey ; Migratory species ; Fish counters ; Population dynamics
    Repository Name: AquaDocs
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    Results of Jack Mackerel tagging study, 1971-75 (2021)
    California Department of Fish and Game, Marine Resources Region | Menlo Park, CA
    In:  http://aquaticcommons.org/id/eprint/234 | 8 | 2011-09-29 22:22:22 | 234 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-27
    Description: Methods and materials used to tag and recapture jack mackerel, Trachurus symmetricus, off the coast of southern Ca1ifornia and Baja California, Mexico, are described. Tagging, recapture, and movement data resulting from this program are reported. Analysis of these data indicates substantial movement of jack mackerel within the range of the California fishery and suggests a seasonal inshore-offshore movement pattern. (13pp.)
    Keywords: Management ; Fisheries ; Biology ; Jack mackerel ; Trachurus symmetricus ; California
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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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    Biomass estimates of Pacific herring, Clupea harengus pallasi, in California from the 1980-81 spawning ground surveys (2021)
    California Department of Fish and Game, Marine Resources Region | Monterey, CA
    In:  http://aquaticcommons.org/id/eprint/309 | 8 | 2011-09-29 22:15:35 | 309 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: The spawning biomass of Pacific herring in San FranciscoBay and Tomales Bay was estimated to be 65,441 tons and 5,583tons, respectively during the 1980-81 season. This is thehighest estimate to date for San Francisco and continuesa rising trend in abundance. The Tomales Bay population hasfluctuated around an annual mean of 6,000 tons since 1973. (24pp.)
    Keywords: Management ; Fisheries ; Pacific herring ; Clupea harengus pallasi ; Tomales Bay ; San Francisco Bay
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    Southern California marine sport fishing from privately owned boats: catch and effort for January-March 1982 (2021)
    California Department of Fish and Game, Marine Resources Region | Santa Barbara, CA
    In:  http://aquaticcommons.org/id/eprint/308 | 8 | 2010-12-14 15:34:49 | 308 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: The catch landed and effort expended by private-boat sportfishermen were studied in southern California betweenJanuary and March 1982, to determine the impact ofone segment of the sport fishery on local marine resources.Fishermen returning from fishing trips were interviewed atlaunch ramps, hoists, and boat-rental facilities. This report contains quantitative data and statistical estimates of total effort, total catch, catch of preferred species, and length frequencies for those species whose catches are regulated by minimum size limits.An estimated 155,000 organisms were landed by 52,000 anglersand 2,400 divers. The two major components of the catch werewhite croaker, Genyonemus lineatus, 44,000 landed and Pacific mackerel, Scomber japonicus, 23,000 landed. Together these two species made up over a third of the estimated southern California sport catch.Angler compliance with size limit regulations was generallyfavorable. Ninety-one percent of all basses, Paralabrax spp., examined were of legal size, as were 73% of the California halibut, Paralichthys californicus. A 24-inch (fork length) size limit was imposed upon Pacific bonito, Sarda chiliensis, as of March 1, 1982; none of the 399 bonito measured in March were of legal size. (31pp.)
    Keywords: Management ; Fisheries ; white croaker ; Genyonemus lineatus ; Pacific mackerel ; Scomber japonicus ; bass ; Paralabrax spp. ; California halibut ; Paralichthys californicus ; Pacific bonito ; Sarda chiliensis
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    Pacific herring, Clupea harengus pallasii studies in San Francisco Bay, December 1981 to March 1982 (2021)
    California Department of Fish and Game, Marine Resources Region | Menlo Park, CA
    In:  http://aquaticcommons.org/id/eprint/315 | 8 | 2011-09-29 22:14:05 | 315 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: Hydroacoustic monitoring and sampling of San Francisco Bayherring stocks were conducted from December 1981 to March 1982. Major schools usually were located in central San Francisco Bay between 30 and 90 ft deep prior to spawning. The largest school observed had an estimated volume of 1.5 billion ft3. There was some consistency between the maximum calculated volume of a school prior to spawning and the subsequent spawning biomass estimate, based on egg counts, by Marine Resources Region personnel.Herring samples were obtained with variable mesh gill nets, a midwater trawl and from commercial purse seine and lampara vessels. Eight discrete spawns were sampled for size and age composition, although data from December and early January samples were biased due to selectivity of the gill net mesh array. In general, a trend was observed of decreasing mean size and age as the season progressed.Ages of herring ranged from 2 to 9 years. From 87 to 94% of the fish sampled with a midwater trawl, 1.5- to 2.5-in mesh array gill net, and from commercial roundhaul samples consisted of 2-, 3-, and 4-year-olds.Calculation of desired sample size for future work indicatesthat 17 fish per 10-mm size interval need to be aged to determine age composition of each spawning population. (51pp.)
    Keywords: Management ; Fisheries ; Pacific herring ; Clupea harengus pallasii
    Repository Name: AquaDocs
    Type: monograph
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  • 37
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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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  • 38
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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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  • 39
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    Biological characteristics of the catch from 1984-85 Pacific herring, Clupea harengus pallasi, roe fishery in California (2021)
    California Department of Fish and Game, Marine Resources Region | Monterey, CA
    In:  http://aquaticcommons.org/id/eprint/327 | 8 | 2011-09-29 22:15:10 | 327 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: In Tomales Bay, 5-, 6-, and 7-yr-old herring, Clupea harengus pallasi, composed 75% by number of the 1984-85 season's catch. In San Francisco Bay, 2-, 3-, and 4-yr-old herring composed 82% by number of the roundhaul catch, and 5-, 6-, and 7-yr-old herring composed 68% by number ofthe gill net catch.The percent of 4-yr-old herring increased to a record high level in the San Francisco Bay gill net catch.Recruitment of 2-yr-old herring into the San Francisco Bay roundhaul fishery was excellent, with 2-yr-old herring composing 41% of the catch.The growth rate of herring improved in both Tomales and San Francisco Bays, after the period of poor growth during the recent El Nino, when the weight of herring averaged 20% below normal.(23pp.)
    Keywords: Management ; Fisheries ; Biology ; Pacific herring ; Clupea harengus pallasi
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  • 40
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    Biological characteristics of the catch from the 1986-87 Pacific herring, Clupea harengus pallasi, roe fishery in California (2021)
    California Department of Fish and Game, Marine Resources Region | Monterey, CA
    In:  http://aquaticcommons.org/id/eprint/334 | 8 | 2011-09-29 22:13:42 | 334 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: In Tomales Bay, 4-, 5-, and 6-yr-old herring, Clupea harengus pallasi, composed 85% by number of the 1986-87 season's catch. In San Francisco Bay, 2-, 3-, and 4-yr-old herring composed 88% of the roundhaul catch, and 4-, 5-, and 6-yr-old herring composed 86% by number of the gill net catch.The age composition of both the Tomales Bay and San Francisco Bay gill net catch has shifted to primarily 4-, 5-, and 6-yr-old herring.Recruitment of 2-yr-old herring into the San Francisco Bay roundhaul fishery was good, with the 1985 yr class composing 37% of the catch.The mean length of herring in the San Francisco Bay roundhaul catch decreased to 174 mm BL, and the mean length of the gill net catch decreased to 194 mm BL. The mean length of the Tomales Bay catch also decreased to197 mm BL.Average weight at age of Tomales Bay herring is below average for the fourth consecutive year. In San Francisco Bay the average weight at age is above average, even though length at age declined slightly. (20pp.)
    Keywords: Management ; Fisheries ; Biology ; Pacific herring ; Clupea harengus pallasi
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  • 41
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    Pacific herring, Clupea harengus pallasi, studies in San Francisco Bay, April 1986 to March 1987 (2021)
    California Department of Fish and Game, Marine Resources Region | Menlo Park, CA
    In:  http://aquaticcommons.org/id/eprint/335 | 8 | 2011-09-29 22:13:44 | 335 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: Herring schools were surveyed hydroacoustically and sampled in San Francisco Bay from late October 1986 to March 1987. Eight large schools (greater than 1000 tons each) spawned from December to February and seven smaller schools were detected throughout the spawning season. Total acoustic biomass estimate using a "visual integration" technique was 40,930 tons, and it was determined from spawn escapement and commercial landings that an additional 2240 tons were not detected. This is a slight increase from last season's total of approximately 42,200 tons. For the first time, biomass was also estimated using echo integration equipment. A total biomass was obtained of 33,050 tons, including herring not detected acoustically. This estimate must be considered preliminary and subject to revision after target strength of San Francisco Bay herring is determined.Eighty-seven samples, containing a total of 13,125 herring, were collected with variable-mesh gill net and midwater trawl or obtained from the roundhaul and gill net fisheries. Mean body length (BL) of sampled herring decreased by about 20 mm from the beginning to the end of the spawning season. A combination of variable-mesh gill net and midwater trawl samples for a particular school closely approximates mean BL and age composition data from unbiased roundhaul samples.Age-weight and age-length relationships were average to above average compared with those of the previous two seasons. The 1982 year class exhibited unusually good growth, with a mean BL of 202.8 mm for herring aged from stratified random samples.The 1982 through 1985 year classes (5- through 2-yr olds)contributed 97% by number and 95% by weight to the total 1986-87 spawning biomass in San Francisco Bay. Good recruitment has occurred during the past four seasons. The weak 1981 year class contributed little to the total biomass as 6-yr olds.Average catch per tow of young-of-the-year (YOY) herring is a potential index of abundance for recruitment 18 months later as 2-yr olds. Estimated recruitment has only varied by 15% during the past three seasons and does not reflect the magnitude or trend in YOY catches in the bay. (85pp.)
    Keywords: Management ; Fisheries ; Biology ; Pacific herring ; Clupea harengus pallasi ; San Francisco Bay ; California
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  • 42
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    Southern California marine sport fishing from privately owned boats: catch and effort for October-December 1982 (2021)
    California Department of Fish and Game, Marine Resources Region | Santa Barbara, CA
    In:  http://aquaticcommons.org/id/eprint/330 | 8 | 2011-09-29 22:13:13 | 330 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: The catch landed and effort expended by private-boat sportfishermen were studied in southern California marine watersbetween October and December 1982, to determine the impact of one segment of the sport fishery on local marine resources. Fishermen returning from fishing trips were interviewed at launch ramps, hoists, and boat-rental facilities. This report contains quantitative data and statistical estimates of total effort, total catch, catch of preferred species, and length frequencies for those species whose catches are regulated by minimum size limits.An estimated 157,000 organisms were landed by 57,700 anglers and 4800 divers. The major components of the angler catch were Pacific mackerel, Scomber japonicus (28,700 estimated catch): white croaker, Genyonemus lineatus (24,000 estimated catch); and Pacific bonito, Sarda chiliensis (16,700 estimated catch). These three species represented almost half the total estimated angler catch. Rockfishes, Sebastes spp: were a major catch component; the 35 rockfish species landed made up 24% of the estimated catch. Divers landed an estimated 14,700 fishes and invertebrates. Chief among these were abalone, Haliotis spp. (4200 estimated catch);rock scallop, Hinnites rugosus (3600 estimated catch); andCalifornia spiny lobster, Panulirus interruptus (2500 estimated catch).Angler and diver compliance with size-limit regulations wasgenerally favorable, with diver compliance being particularly scrupulous, especially with invertebrate species. The compliance rate for California halibut, Paralichthys californicus, showed a drop from the previous quarter (July - September 1982) from 70 to 59% legal. During the same time period, size-limit compliance rose from 4 to 20% for Pacific bonito, a species with a tolerance allowing the take of some under-sized fish. (28p.)
    Keywords: Management ; Fisheries ; Pacific mackerel ; Scomber japonicus ; white croaker ; Genyonemus lineatus ; Pacific bonito ; Sarda chiliensis ; Rockfishes ; Sebastes spp ; abalone ; Haliotis spp. ; rock scallop ; Hinnites rugosus ; California spiny lobster ; Panulirus interruptus ; California halibut ; Paralichthys californicus
    Repository Name: AquaDocs
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  • 43
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    Marine recreational fisheries statistics survey for northern and central California, Quarterly Report no. 16, April to June, 1983 (2021)
    California Department of Fish and Game, Marine Resources Region | Fort Bragg, CA
    In:  http://aquaticcommons.org/id/eprint/345 | 8 | 2011-09-29 22:12:20 | 345 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: Field intercept Marine Recreational Fisheries Statistics Survey (MRFSS) data for central and northern California, collected in April to June of 1983, is presented in a data report format. Data in this quarterly report are subdivided into three categories: primarily by five geographical areas;secondarily by fishing modes and gear types within each area; and finally by catch definition for each area, mode, and gear type. Tables are presented for these categories, each with three sections: sampled effort, ranked catch, and catch-per-unit-effort (CPUE). Also, within each area, length-frequency histograms and tables are presented for select species. (149pp.)
    Keywords: Management ; Fisheries ; Biology
    Repository Name: AquaDocs
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  • 44
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    Marine recreational fisheries statistics survey for northern and central California, Quarterly Report no. 19, January to March, 1984 (2021)
    California Department of Fish and Game, Marine Resources Region | Fort Bragg, CA
    In:  http://aquaticcommons.org/id/eprint/348 | 8 | 2011-09-29 22:12:53 | 348 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: Field intercept Marine Recreational Fisheries Statistics Survey (MRFSS) data for central and northern California, collected in January to March 1984, is presented in a data report format. Data in this quarterly report are subdivided into three categories: primarily by five geographical areas;secondarily by fishing modes and gear types within each area; and finally by catch definition for each area, mode, and gear type. Tables are presented for these categories, each with three sections: sampled effort, ranked catch, and catch-per-unit-effort (CPUE). Also, within each area, length-frequency histograms and tables are presented for select species. (141pp.)
    Keywords: Management ; Fisheries ; Biology
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  • 45
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    Marine recreational fisheries statistics survey for northern and central California, Quarterly Report no. 17, July to September, 1983 (2021)
    California Department of Fish and Game, Marine Resources Region | Fort Bragg, CA
    In:  http://aquaticcommons.org/id/eprint/346 | 8 | 2011-09-29 22:12:47 | 346 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: Field intercept Marine Recreationa1 Fisheries Statistics Survey (MRFSS) data for central and northern California, collected in July to September 1983, is presented in a data report format. Data in this quarterly report are subdivided into three categories: primarily by five geographical areas;secondarily by fishing modes and gear types within each area; and finally by catch definition for each area, mode, and gear type. Tables are presented for these categories, each with three sections: sampled effort, ranked catch, and catch-per-unit-effort (CPUE). Also, within each area, length-frequency histograms and tables are presented for select species. (159p.)
    Keywords: Management ; Fisheries ; Biology
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  • 46
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    Marine recreational fisheries statistics survey for northern and central California, Quarterly Report no. 8, April to June, 1981 (2021)
    California Department of Fish and Game, Marine Resources Region | Fort Bragg, CA
    In:  http://aquaticcommons.org/id/eprint/350 | 8 | 2011-09-29 22:11:53 | 350 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: Field intercept Marine Recreational Fisheries Statistics Survey (MRFSS) data for central and northern California, collected in April to June 1981, is presented in a data report format. Data in this quarterly report aresubdivided into three categories: primarily by five geographical areas; secondarily by fishing modes and gear types within each area; and finally by catch definition for each area, mode, and gear type. Tables are presented for these categories, each with three sections: sampled effort, ranked catch, and catch-per-unit-effort (CPUE). Also, within each area, length-frequency histograms and tables are presented for select species. (131pp.)
    Keywords: Management ; Fisheries ; Biology
    Repository Name: AquaDocs
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  • 47
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    Southern California marine sport fishing from privately owned boats: catch and effort for January-March 1983 (2021)
    California Department of Fish and Game, Marine Resources Region | Santa Barbara, CA
    In:  http://aquaticcommons.org/id/eprint/329 | 8 | 2011-09-29 22:15:29 | 329 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: The catch landed and effort expended by private-boat sport fishermen were studied in southern California between January and March 1983 in order to determine the impact on local marine resources by one segment of the sport fishery. Fishermen returning from fishing trips were interviewed at launch ramps, hoists, and boat-rental facilities. Thisreport contains quantitative data and statistical estimates of total effort, total catch, catch of selected species, and length frequencies for those species with minimum size limits.An estimated 74,200 organisms were landed by 29,400 anglers and 1500 divers. The major species in the angler catch included white croaker, Genyonemus lineatus, (16,000 landed) and Pacific mackerel, Scomber japonicus (14,000 landed). The two species combined made up 44% of the total estimated angler catch. Divers, hampered in their activity by stormy conditions, landed an estimated 1700 rock scallop, Hinnitesmultirugosus. This single species represented almost a third of the estimated diver catch.The length frequency data, collected for size-regulated fish and shellfish species, show that minimum size-limit compliance was very good for both angler-caught and diver-caught species during the reporting period. (31pp.)
    Keywords: Management ; Fisheries ; white croaker ; Genyonemus lineatus ; Pacific mackerel ; Scomber japonicus ; rock scallop ; Hinnites multirugosus
    Repository Name: AquaDocs
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  • 48
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    Marine recreational fisheries statistics survey for northern and central California, Quarterly Report no. 18, October to December 1983 (2021)
    California Department of Fish and Game, Marine Resources Region | Fort Bragg, CA
    In:  http://aquaticcommons.org/id/eprint/347 | 8 | 2011-09-29 22:12:50 | 347 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: Field intercept Marine Recreational Fisheries Statistics Survey (MRFSS) data for central and northern California, collected in October to December 1983, is presented in a data report format. Data in this quarterly report are subdivided into three categories: primarily by five geographical areas; secondarily by fishing modes and gear types within each area; and finally by catch definition for each area, mode, and gear type. Tables are presented for these categories, each with three sections: sampled effort, ranked catch, and catch-per-unit-effort (CPUE). Also, within each area, length-frequency histograms and tables are presented for select species. (133pp.)
    Keywords: Management ; Fisheries ; Biology
    Repository Name: AquaDocs
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  • 49
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    Marine recreational fisheries statistics survey for northern and central California, Quarterly Report no. 9, July to September 1981 (2021)
    California Department of Fish and Game, Marine Resources Region | Fort Bragg, CA
    In:  http://aquaticcommons.org/id/eprint/351 | 8 | 2011-09-29 22:11:24 | 351 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: Field intercept Marine Recreational Fisheries Statistics Survey (MRFSS) data for central and northern California, collected in July to September 1981, is presented in a data report format. Data in this quarterly report are subdivided into three categories: primarily by five geographical areas;secondarily by fishing modes and gear types within each area; and finally by catch definition for each area, mode, and gear type. Tables are presented for these categories, each with three sections: sampled effort, ranked catch, and catch-per-unit-effort (CPUE). Also, within each area,length-frequency histograms and tables are presented for select species. (149pp.)
    Keywords: Management ; Fisheries ; Biology
    Repository Name: AquaDocs
    Type: monograph
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  • 50
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    Southern California marine sport fishing from privately owned boats: catch and effort for April - June 1982 (2021)
    California Department of Fish and Game, Marine Resources Region | San Diego, CA
    In:  http://aquaticcommons.org/id/eprint/287 | 8 | 2011-09-29 22:17:08 | 287 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: The catch landed and effort expended by private-boatsport fishermen in southern California were studiedbetween April and June 1982, in order to determine theimpact of this segment of the sport fishery on localmarine resources. Fishermen returning from fishingtrips were interviewed at launch ramps, hoists, andboat-rental facilities. This report contains quantitative data and statistical estimates of total effort, total catch, catch of preferred species, and length frequencies for those species whose catches are regulated by minimum size limits.An estimated 213,000 organisms were landed by 102,000anglers and 3,300 divers. The major components of thecatch were white croaker, Genyonemus lineatus (56,000landed); and Pacific mackerel, Scomber japonicus (43,000landed). Together these two species made up almost one half of the estimated southern California sport catch.Anglers' compliance with size limit regulations wasvariable. Approximately 91% of all basses, Paralabraxspp., measured were legal size. Only 10% of the whiteseabass, Stractoscion nobilis, were larger than the minimumsize limit imposed on March 1, 1982. Divers' compliancewith size limit regulations on abalone, averaged 94%. (33pp.)
    Keywords: Management ; Fisheries ; white croaker ; Genyonemus lineatus ; Pacific mackerel ; Scomber japonicus ; white seabass ; Stractoscion nobilis
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  • 51
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    Mendocino Power Plant site ecological study annual report; July 1, 1971 to December 31, 1972 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/290 | 8 | 2011-09-29 22:17:20 | 290 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: This report is the first annual report submitted in partialfulfillment of Research Contract No. S-1902 between the Department of Fish and Game and the Pacific Gas and Electric Company. Through this contract the Department of Fish and Game is to conduct a preoperational ecological study to establish a base line inventory of the marine biota with special reference to fish and to abalone,including food chains.This first annual report covers all work from September 1971 through December 1972.This annual report covers the first 18 month period of the project from July 1, 1971 through December 31, 1972. The report includes results (discussion and tables) of our subtidal, intertidal, sportfishery, fish collection, fish food habit, and plankton studies. The quarterly reportfor October 1 to December 31, 1972 is included herein and these data are incorporated in this annual report. (86pp.)
    Keywords: Ecology ; Fisheries ; Biology ; Mendocino Power Plant ; California ; environmental impact
    Repository Name: AquaDocs
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  • 52
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    Marine recreational fisheries statistics survey for northern and central California, Quarterly Report no. 6, October to December, 1980 (2021)
    California Department of Fish and Game, Marine Resources Region | Fort Bragg, CA
    In:  http://aquaticcommons.org/id/eprint/337 | 8 | 2011-09-29 22:14:00 | 337 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: Field intercept Marine Recreational Fisheries Statistics Survey (MRFSS) data for central and northern California, collected in October to December. 1980, is presented in a data report format. Data in this quarterly report are subdivided into three categories: primarily by five geographical areas; secondarily by fishing modes and gear types within each area; and finally by catch definition for each area, mode, and gear type. Tables are presented for these categories, each with three sections: sampled effort, ranked catch, and catch-per-unit effort (CPUE). Also, within each area, length-frequency histograms and tables are presented for select species. (143pp.)
    Keywords: Management ; Fisheries ; Biology
    Repository Name: AquaDocs
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  • 53
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    Marine recreational fisheries statistics survey for Northern and Central California, Quarterly Report No. 29, July to September 1986 (2021)
    California Department of Fish and Game, Marine Resources Region | Fort Bragg, CA
    In:  http://aquaticcommons.org/id/eprint/523 | 8 | 2011-09-29 21:56:59 | 523 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-30
    Description: Field intercept Marine Recreational Fisheries Statistics Survey (MRFSS) data for central and northern California, collected in July to September of 1986, is presented in a data report format. Data in this quarterly report aresubdivided into three categories: primarily by five geographical areas; secondarily by fishing modes and gear types within each area; and finally bycatch definition for each area, mode, and gear type. Tables are presented forthese categories, each with three sections: sampled effort, ranked catch, and catch-per-unit-effort (CPUE). Also, within each area, length-frequency histograms and tables are presented for select species. (Document has 210 pages.)
    Description: The supplement (Appendix A) to this report is currently awaiting digitization, as the supplement is on microfiche and is poor quality.
    Keywords: Management ; Fisheries ; marine fishes ; sport fishing ; California
    Repository Name: AquaDocs
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  • 54
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    Marine recreational fisheries statistics survey for northern and central California, Quarterly Report no. 20, April to June 1984 (2021)
    California Department of Fish and Game, Marine Resources Region | Fort Bragg, CA
    In:  http://aquaticcommons.org/id/eprint/524 | 8 | 2011-09-29 21:57:02 | 524 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-30
    Description: Field intercept Marine Recreational Fisheries Statistics Survey (MRFSS) data for central and northern California, collected in April to June of 1984, is presented in a data report format. Data in this quarterly report are subdivided into three categories: primarily by five geographical areas: secondarily by fishing modes and gear types within each area; and finally by catch definition for each area, mode, and gear type. Tables are presented for these categories, each with three sections: sampled effort, ranked catch, and catch-per-unit-effort(CPUE). Also, within each area, length-frequency histograms and tables are presented for select species. (Document has 141 pages)
    Description: The supplement (Appendix A) to this report is currently awaiting digitization, as the supplement is on microfiche and is poor quality.
    Keywords: Management ; Fisheries
    Repository Name: AquaDocs
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  • 55
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    Marine recreational fisheries statistics survey for Northern and Central California, Quarterly Report No. 28, April to June, 1986 (2021)
    California Department of Fish and Game, Marine Resources Region | Fort Bragg, CA
    In:  http://aquaticcommons.org/id/eprint/519 | 8 | 2011-09-29 21:56:39 | 519 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-30
    Description: Field intercept Marine Recreational Fisheries Statistics Survey (MRFSS) data for central and northern California, collected in April to June of 1986, is presented in a data report format. Data in this quarterly report are subdivided into three categories: primarily by five geographical areas;secondarily by fishing modes and gear types within each area; and finally by catch definition for each area, mode, and gear type. Tables are presented for these categories, each with three sections: sampled effort, ranked catch, and catch-per-unit-effort (CPUE). Also, within each area, length-frequency histograms and tables are presented for select species. (Document has 155 pages.)
    Description: The supplement (Appendix A) to this report is currently awaiting digitization, as the supplement is on microfiche and is poor quality.
    Keywords: Management ; Fisheries ; marine species ; recreational fishing ; California
    Repository Name: AquaDocs
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  • 56
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    Marine recreational fisheries statistics survey for northern and central California, Quarterly Report no. 30, October to December, 1986 (2021)
    California Department of Fish and Game, Marine Resources Region | Fort Bragg, CA
    In:  http://aquaticcommons.org/id/eprint/522 | 8 | 2011-09-29 21:56:54 | 522 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-30
    Description: Fleld intercept Marine Recreational Fisheries Statistics Survey (MRFSS) data for central and northern California, collected in October to December of 1986, is presented in a data report format. Data in this quarterly report are subdivided into three categories: primarily by five geographical areas; secondarily by fishing modes and gear types within each area; and finally by catch definition for each area, mode, and gear type. Tables are presented forthese categories, each with three sections: sampled effort, ranked catch, and catch-per-unit-effort (CPUE). Also, within each area, length-frequency histograms and tables are presented for select species.
    Description: The supplement (Appendix A) to this report is currently awaiting digitization, as the supplement is on microfiche and is poor quality.
    Keywords: Management ; Fisheries
    Repository Name: AquaDocs
    Type: monograph
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    Marine recreational fisheries statistics survey for northern and central California, Quarterly Report no. 23, January to March 1985 (2021)
    California Department of Fish and Game, Marine Resources Region | Fort Bragg, CA
    In:  http://aquaticcommons.org/id/eprint/531 | 8 | 2011-09-29 21:55:08 | 531 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-30
    Description: Field intercept Marine Recreational Fisheries Statistics Survey (MRFSS) data for central and northern California, collected in January to March 1985, are presented in a data report format. Data in this quarterly report are subdivided into three categories: primarily by five geographical areas; secondarily by fishing modes and gear types within each area; and finally by catch definition for each area, mode, and gear type. Tables are presented for these categories, each with three sections: sampled effort, ranked catch, and catch-per-unit-effort (CPUE). Also, within each area, length-frequency histograms and tables are presented for select species. (140pp.)
    Keywords: Management ; Fisheries
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  • 58
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    Marine recreational fisheries statistics survey for Northern and Central California, Quarterly Report No. 4, April to June, 1980 (2021)
    California Department of Fish and Game, Marine Resources Region | Fort Bragg, CA
    In:  http://aquaticcommons.org/id/eprint/529 | 8 | 2011-09-29 21:55:11 | 529 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-30
    Description: Field intercept Marine Recreational Fisheries Statistics Survey (MRFSS) data for central and northern California, collected in April to June 1980, is presented in a data report format. Data in this quarterly report aresubdivided into three categories: primarily by five geographical areas; secondarily by fishing modes and gear types within each area; and finally by catch definition for each area, mode, and gear type. Tables are presentedfor these categories, each with three sections: sampled effort, ranked catch, and catch-per-unit-effort (CPUE). Also, within each area, length-frequency histograms and tables are presented for select species. (155pp.)
    Description: The supplement (Appendix A) to this report is currently awaiting digitization, as the supplement is on microfiche and is poor quality.
    Keywords: Management ; Fisheries ; marine species ; recreational fishing ; California
    Repository Name: AquaDocs
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  • 59
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    Marine recreational fisheries statistics survey for northern and central California, Quarterly Report no. 22, October to December 1984 (2021)
    California Department of Fish and Game, Marine Resources Region | Fort Bragg, CA
    In:  http://aquaticcommons.org/id/eprint/526 | 8 | 2011-09-29 21:55:41 | 526 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-30
    Description: Field intercept Marine Recreational Fisheries Statistics Survey (MRFSS) data for central and northern California, collected in October to December of 1984, is presented in a data report format. Data in this quarterly report are subdivided into three categories: primarily by five geographical areas; secondarily by fishing modes and gear types within each area; and finally by catch definition for each area, mode, and gear type. Tables are presentedfor these categories, each with three sections: sampled effort, ranked catch, and catch-per-unit-effort (CPUE). Also, within each area, length-frequency histograms and tables are presented for select species. (Document has 128 pages)
    Description: The supplement (Appendix A) to this report is currently awaiting digitization, as the supplement is on microfiche and is poor quality.
    Keywords: Management ; Fisheries
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  • 60
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    Inshore fisheries habitat evaluation and monitoring program: Cruise Report 71-KB-1 (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/558 | 8 | 2011-09-29 21:53:05 | 558 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-30
    Description: (2pp.)
    Keywords: Ecology ; Biology ; R/V Kelp Bass ; polychaetes
    Repository Name: AquaDocs
    Type: monograph
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  • 61
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    Cruise Report 71-KB-10: Big game fish investigations (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/567 | 8 | 2011-09-29 21:53:45 | 567 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-30
    Description: (1p.)
    Keywords: Fisheries ; Biology ; R/V Kelp Bass ; Pacific bonito ; Sarda chiliensis ; Pacific mackerel ; Scomber japonicus ; California
    Repository Name: AquaDocs
    Type: monograph
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  • 62
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    Cruise Report 71-KB-16: Big game fish investigation (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/572 | 8 | 2011-09-29 21:53:58 | 572 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-30
    Description: (1p.)
    Keywords: Biology ; R/V Kelp Bass ; California ; cruise report ; Pacific bonito ; Sarda chiliensis ; Pacific mackerel ; Scomber japonicus ; Jack mackerel ; Trachurus symmetricus
    Repository Name: AquaDocs
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  • 63
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    Cruise Report 71-KB-5: Pelagic Fish Program (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/562 | 8 | 2011-09-29 21:53:22 | 562 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-30
    Description: (1p.)
    Keywords: Fisheries ; Biology ; R/V Kelp Bass ; San Pedro Bay ; sardine ; Engraulis spp. ; spawning
    Repository Name: AquaDocs
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  • 64
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    Cruise Report 71-KB-18: Kelp Management Program DJ F-27-R (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/574 | 8 | 2011-09-29 21:54:24 | 574 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-30
    Description: (3pp.)
    Keywords: Ecology ; Biology ; R/V Kelp Bass ; Palos Verdes Peninsula ; California ; cruise report ; brown algae ; Dictyota ; Dictyopteris ; Eisenia ; Halidrys ; Macrocystis
    Repository Name: AquaDocs
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  • 65
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    Cruise Report 72-KB-7: Big game fish investigations (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/584 | 8 | 2011-09-29 21:50:24 | 584 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-30
    Description: (1p.)
    Keywords: Fisheries ; Biology ; R/V Kelp Bass ; Redondo Beach ; California ; Pacific bonito ; Sarda chiliensis
    Repository Name: AquaDocs
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  • 66
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    Cruise Report 72-KB-14: Sportfish-Kelp habitat project DJ F-27-R (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/590 | 8 | 2011-09-29 21:48:16 | 590 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-01
    Description: (1p.)
    Keywords: Ecology ; Biology ; R/V Kelp Bass ; California ; Abalone Cove ; Macrocystis ; kelp
    Repository Name: AquaDocs
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  • 67
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    Cruise report 73-KB-1: Big game fish investigations (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/609 | 8 | 2011-09-29 21:48:57 | 609 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-01
    Description: Document has 1 page.
    Keywords: Fisheries ; Biology ; R/V Kelp Bass ; Southern California ; Pacific bonito ; Sarda chiliensis ; white seabass ; Cynoscion nobilis ; California barracuda ; Sphyraena argentea ; Jack mackerel ; Trachurus symmetricus ; Pacific mackerel ; Scomber japonicus
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  • 68
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    Cruise Report 71-KB-9: Inshore fisheries habitat evaluation and monitoring program (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/566 | 8 | 2011-09-29 21:53:43 | 566 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-30
    Description: (2pp.)
    Keywords: Ecology ; Biology ; R/V Kelp Bass ; Pt. Loma ; California ; ecological surveys ; cruise report
    Repository Name: AquaDocs
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  • 69
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    Cruise Report 71-KB-17: Inshore fisheries habitat evaluation and monitoring program (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/573 | 8 | 2011-09-29 21:54:22 | 573 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-30
    Description: (1p.)
    Keywords: Ecology ; Biology ; Huntington Beach ; California ; R/V Kelp Bass ; ecological surveys ; cruise report ; Horseshoe kelp
    Repository Name: AquaDocs
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  • 70
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    Cruise Report 71-KB-12: Inshore fisheries habitat evaluation and monitoring program (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/569 | 8 | 2011-09-29 21:53:49 | 569 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-30
    Description: (1p.)
    Keywords: Biology ; R/V Kelp Bass ; abalone ; Fort Ross Cove ; California
    Repository Name: AquaDocs
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  • 71
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    Cruise Report 71-KB-19: Jack mackerel tagging program (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/575 | 8 | 2011-09-29 21:54:26 | 575 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-30
    Description: (1p.)
    Keywords: Fisheries ; Biology ; R/V Kelp Bass ; Southern California ; jack mackerel ; Trachurus symmetricus ; Pacific mackerel ; Scomber japonicus ; cruise report
    Repository Name: AquaDocs
    Type: monograph
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  • 72
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    Cruise Report 72-KB-2: Sportfish-Kelp habitat program DJ-F27D (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/579 | 8 | 2011-09-29 21:50:08 | 579 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-30
    Description: (1p.)
    Keywords: Biology ; R/V Kelp Bass ; Paradise Cove ; Abalone Cove ; California ; Kelp ; Macrocystis sp.
    Repository Name: AquaDocs
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  • 73
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    Cruise Report 72-KB-31: Big game fish investigations (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/607 | 8 | 2011-09-29 21:48:50 | 607 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-01
    Description: Document has 3 pages.
    Keywords: Fisheries ; Biology ; R/V Kelp Bass ; California ; Pacific bonito ; Sarda chiliensis ; California barracuda ; Sphyraena argentea ; white seabass ; Cynoscion nobilis ; Jack mackerel ; Trachurus symmetricus
    Repository Name: AquaDocs
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  • 74
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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
    Repository Name: AquaDocs
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  • 75
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    Cruise Report 73-KB-26: Sportfish-kelp habitat study (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/630 | 8 | 2011-09-29 21:46:14 | 630 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-01
    Description: (2pp.)
    Keywords: Ecology ; Biology ; R/V Kelp Bass ; Kelp ; Macrocystis sp. ; Catalina Island ; California ; Abalone Cove
    Repository Name: AquaDocs
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  • 76
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    Cruise Report 73-KB-33: Abalone-Lobster Investigations (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/636 | 8 | 2011-09-29 21:46:10 | 636 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-01
    Description: 2pp.
    Description: 2 pp.
    Keywords: Fisheries ; Biology ; Green abalone ; Haliotis fulgens ; Spiny lobster ; Panuliris interruptus ; Santa Catalina Island ; California
    Repository Name: AquaDocs
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  • 77
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    Cruise Report 73-KB-27: Big game fish investigations (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/631 | 8 | 2011-09-29 21:46:15 | 631 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-01
    Description: Document has 1 page
    Description: 1 p.
    Keywords: Fisheries ; Biology ; R/V Kelp Bass ; Pacific bonito ; Sarda chiliensis ; California barracuda ; Sphyraena argentea ; Pacific mackerel ; Scomber japonicus ; Jack mackerel ; Trachurus symmetricus
    Repository Name: AquaDocs
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  • 78
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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
    Repository Name: AquaDocs
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  • 79
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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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  • 80
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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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  • 81
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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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  • 82
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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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  • 83
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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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  • 84
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    Observations on the larval hatching success of dungeness crab, Cancer magister, from the San Francisco and Eureka-Crescent City region (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/682 | 8 | 2011-09-29 21:41:38 | 682 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-02
    Description: Ovigerous Dungeness crabs were collected from the SanFrancisco and Eureka-Crescent City regions and maintained atthe Department's Marine Culture Laboratory near Monterey.Hatching success, expressed as viable larvae released, wasmeasured and compared by region. Larval counts were made from 15 Dungeness crabs, 5 from the San Francisco region, 7 from the Eureka-Crescent City area and 3 of unknown origin. Mean hatching success exceeded 80% in the San Francisco region, and averaged more than 90% in the Eureka-Crescent City area. However, a Student's t-Test showed this difference in hatching success was not significant. (16pp.)
    Keywords: Biology ; Dungeness crab ; Cancer magister ; California ; San Francisco
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  • 85
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    Post mortem studies of sea otters, Enhydra lutris L., in California (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/683 | 8 | 2011-09-29 21:41:42 | 683 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-02
    Description: Dead sea otters found on or near beaches in central California from January 1968 through June 1974 were collected for study. Necropsies were conducted on many of these carcasses. Sea otter mortalities are related to: (1) area of recovery; (2) sex; (3) relative age; (4) general cause of death; and (5) sea surface roughness.Selected specific aspects of necropsies are summarized. Tables for estimating weight from total length and estimating total length from tail length and foot length are given. Organ weights are discussed. Criteria for establishing relative age based on degree of fusion of cranial sutures, eruption and wear of dentition, and development of the glenoid fossa are given. A method of estimating relative age of male otters is given based onbaculum length or volume.Methods useful for sexing dissociated skeletal remains basedon osteological differences in pelves are presented.(87pp.)
    Keywords: Health ; Biology ; sea otters ; Enhyrda lutris L. ; California ; post mortem
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  • 86
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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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  • 87
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    Average lunar monthly catch of sardines in California for the 1954-55 through 1961-62 seasons (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/679 | 8 | 2011-09-29 21:41:50 | 679 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-01
    Description: The catch per unit of effort of the sardine along thecoast of California has been published for the period 1932 to 1953. This paper continues the catch per unit of effort study through the 1961-62 season. Although the catch per unit of effort varied greatly during this later period, it never reached the high levels reported during the 1940's or decreased below the values reported for the disastrous seasons of 1952-53 and 1953-54. Mortalities and year class strengths are briefly discussed. (45pp.)
    Keywords: Fisheries ; Biology ; sardine ; California
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  • 88
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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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  • 89
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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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  • 90
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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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  • 91
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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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  • 92
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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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  • 93
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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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  • 94
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    An assessment of the accidental take of sea otters, Enhydra lutris, in gill and trammel nets (2021)
    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/721 | 8 | 2011-09-29 21:39:12 | 721 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-02
    Description: The sea otter, Enhydra 1utris, is fully protected inCalifornia by both state and federal law. Despite thisprotection the population has not grown appreciably since atleast 1976. Research efforts directed at identifying thereasons for the lack of population growth have concentratedon sources of mortality and their contribution to totalmortality.The accidental drowning of sea otters in gill and trammelnets used to take California halibut, Para1ichthysca1ifornicus, was identified as a source of mortality whichhas probably increased as the sea otter population expandedinto areas of intense fishing. As a result, an existinggill and trammel net fishery observation program in MontereyBay was expanded to assess the extent and significance ofthe accidental drownings of sea otters in the areas nearMorro Bay and Port San Luis.Three different estimates of the number of sea ottersdrowned annually in gill and trammel nets were generatedusing comparable data bases. The average of these estimateswas approximately 80 sea otters per year for the level offishing effort expended during the June 1982 through June1984 study period.Back calculations of the annual take of sea otters by thegill and trammel net fishery for California halibut weremade for each year from 1973 through 1983. Thesecalculations suggest that the level of accidental take ofsea otters during the last decade may have been high enoughto be a significant factor in the lack of sea otterpopulation growth. (31pp.)
    Keywords: Fisheries ; Biology ; Sea otter ; Enhydra lutris ; California ; gill net ; trammel net
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  • 95
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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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  • 96
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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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  • 97
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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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  • 98
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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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  • 99
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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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  • 100
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    Cruise Report 74-KB-8 and 74-M-1: Abalone-Lobster investigations (2021)
    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/820 | 8 | 2011-09-29 21:34:00 | 820 | California Department of Fish and Game
    Details
    Publication Date: 2021-07-03
    Description: (6pp.)
    Keywords: Fisheries ; Biology ; R/V Kelp Bass ; R/V Mollusk ; spiny lobster ; Panulirus interruptus ; abalones ; Haliotis kamtschatkana ; Santa Cruz Island ; Santa Rosa Island ; San Miguel Island ; California
    Repository Name: AquaDocs
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