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  • 1
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    River Dart Scale Reading Investigation Report on the 1967 Season (2021)
    Devon River Authority | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10868 | 1256 | 2013-03-26 13:40:27 | 10868 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-01
    Description: This is the sixth and final River Dart Scale Reading Investigation Report on the 1967 Season by the Devon River Board. The object of this investigation is to examine, by means of scale-reading, the general biology of the salmon population of the River Dart. It reviews the methods used for the collection of scales and examination of the materials. It shows the results of the survey and the number of scales studied from each of the various sea-age classes, time of running with distribution of the sea-age groups throughout the season, fish sizes and smolt ages at migration. All it summarized in tables, and figures are included plotting weight distributions for each age classes and frequency distributions. It also compares the results of previous reports and gives a full summary for the investigation (including previous reports).
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; South West ; River Dart ; River fisheries ; Freshwater fish ; Salmon fisheries ; Fish populations ; Population structure ; Population dynamics ; Migratory species
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 17
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  • 2
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    River Dart Scale Reading Investigation Report on the 1966 Season (2021)
    Devon River Board | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10867 | 1256 | 2013-03-26 13:40:36 | 10867 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-01
    Description: This is the fifth River Dart Scale Reading Investigation Report on the 1966 Season by the Devon River Board. The object of this investigation is to examine, by means of scale-reading, the general biology of the salmon population of the River Dart. It reviews the methods used for the collection of scales and examination of the materials. It shows the results of the survey and the number of scales studied from each of the various sea-age classes, time of running with distribution of the sea-age groups throughout the season, fish sizes and smolt ages at migration. All it summarized in tables, and figures are included plotting weight distributions for each age classes and frequency distributions. It also compares the results of previous reports.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; South West ; River Dart ; River fisheries ; Freshwater fish ; Salmon fisheries ; Fish populations ; Population structure ; Population dynamics ; Migratory species
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 12
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  • 3
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    River Dart Scale Reading Investigation 1972 (2021)
    Devon River Authority | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10881 | 1256 | 2013-04-01 17:23:27 | 10881 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-01
    Description: This is the River Dart Scale Reading Investigation Report on the 1972 season by the Devon River Board. The object of this investigation is to examine, by means of scale-reading, the general biology of the salmon population of the River Dart. In 1967 the final report on a five-year scale reading programme was summarised, at the time it was considered sufficient information to help with restocking programmes and the management of salmon population. But a further scale reading programme was started in an attempt to monitor changing patterns in salmon runs that may be caused by the new influences. It reviews the methods used for collection of the scales and examination of the materials. It shows the results of the survey and the number of scales studied from each of the various sea-age classes, time of running with distribution of the sea-age groups throughout the season, fish sizes and smolt ages at migration. All is summarized in tables, and figures are included showing weight distributions for each age classes and frequency distributions.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; South West ; River Dart ; River fisheries ; Salmon fisheries ; Fish populations ; Population structure ; Population dynamics ; Migratory species
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 9
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  • 4
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    River Exe Scale Reading Investigation. 5th Annual Report for the 1970 Season (2021)
    Devon River Authority | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10892 | 1256 | 2013-03-26 13:28:07 | 10892 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-01
    Description: This is the 5th Annual Report of the Rive Exe Scale Reading Investigation for the 1970 season by the Devon River Authority. The object of this investigation is to examine, by means of scale reading, the biology of age classes of the salmon population of the River Exe. It reviews the methods used for the collection of scales and examination of the materials. It shows the results of the survey and the number of scales studied from each of the various sea-age classes, time of running with distribution of the sea-age groups throughout the season, fish sizes and smolt ages at migration. All is summarized in tables, and figures are included showing weight distributions for each age classes and frequency distributions.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; South West ; River Exe ; River fisheries ; Salmon fisheries ; Fish populations ; Population structure ; Population dynamics ; Migratory species ; Population density
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 14
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  • 5
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    River Exe Scale Reading Investigation. 6th Annual Report for the 1971 Season. (2021)
    Devon River Authority | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10893 | 1256 | 2013-10-27 13:08:58 | 10893 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-01
    Description: This is the 6th Annual Report of the Rive Exe Scale Reading Investigation for the 1971 Season by the Devon River Authority. The object of this investigation is to examine, by means of scale reading, the biology of age classes of the salmon population of the River Exe. It reviews the methods used for the collection of scales and examination of the materials. It shows the results of the survey and the number of scales studied from each of the various sea-age classes, time of running with distribution of the sea-age groups throughout the season, fish sizes and smolt ages at migration. All is summarized in tables, and figures are included showing weight distributions for each age classes and frequency distributions.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; South West ; River Exe ; River fisheries ; Salmon fisheries ; Fish populations ; Population structure ; Population dynamics ; Migratory species ; Population density
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 10
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  • 6
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    River Exe Scale Reading Investigation. 7th Annual Report for the 1972 season (2021)
    Devon River Authority | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10894 | 1256 | 2013-03-26 13:27:46 | 10894 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-01
    Description: This is the 7th Annual Report of the Rive Exe Scale Reading Investigation for the 1972 Season by the Devon River Authority. The object of this investigation is to examine, by means of scale reading, the biology of age classes of the salmon population of the River Exe. It reviews the methods used for the collection of scales and examination of the materials. It shows the results of the survey and the number of scales studied from each of the various sea-age classes, time of running with distribution of the sea-age groups throughout the season, fish sizes and smolt ages at migration. All is summarized in tables, and figures are included showing weight distributions for each age classes and frequency distributions.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; South West ; River Exe ; River fisheries ; Salmon fisheries ; Fish populations ; Population structure ; Population dynamics ; Migratory species ; Population density
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 10
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  • 7
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    Rivers Taw and Torridge scale reading investigation. 8th annual report for the 1972 season (2021)
    Devon River Authority | UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/11137 | 1256 | 2013-04-11 16:55:03 | 11137 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-06-28
    Description: This is the Rivers Taw and Torridge scale reading investigation: the 8th annual report for the 1972 season produced by Devon River Authority in 1973. The object of the investigation is to examine by means of scale reading the biology of age classes of the salmon populations of the Rivers Taw and Torridge. The report is arranged in sections as previously and tables referred to in the report form an appendix. Scales were collected only from fish taken during the normal open season, which in 1972 was 1st April - 31st August. A weekly close time was in operation for the nets, a period of 60 hours from 6 p.m. on Friday evening to 6 a.m. on the following Monday. Thirty six licences for draft or seine nets were issued for the 1972 season and netsmen submitted samples of scales collected direct.
    Description: Environment Agency Archives South West
    Description: + tables and figures
    Keywords: Ecology ; Fisheries ; Limnology ; England ; River Taw ; River Torridge ; Inland waters ; Freshwater fish ; Migratory species ; Fish population ; Population size distribution ; Fish catch statistics ; Fishery data
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 4
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  • 8
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    River Erme Fisheries Survey 1965 (2021)
    Devon River Authority | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10890 | 1256 | 2013-03-26 13:35:47 | 10890 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-01
    Description: This is the River Erme Fisheries Survey, 1965 by the Devon River Authority.The survey was carried out during April and May 1965, with the principal object being the determination of the abundance and distribution of salmonid fish in the River Erme in relation to the discharge from Stowford Paper Mills, Ivybridge. It contains a brief introduction of general aspects of the catchment, chemistry, pollution, biology and fisheries in the river, methodology that looks at the selected transects and techniques for sampling, results and recommendations. It contains tables with totals of all salmonid fish found at each section, size distribution of trout, surface area of section and population density.
    Description: Environment Agency Archives North West
    Keywords: Fisheries ; Limnology ; Management ; England ; South West ; River Erme ; River fisheries ; Salmon fisheries ; Fish populations ; Population structure ; Population dynamics ; Migratory species ; Population density
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 12
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  • 9
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    River Dart fisheries survey 1965 (2021)
    Devon River Authority | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10872 | 1256 | 2013-03-26 13:52:39 | 10872 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-01
    Description: This is the first River Dart Fisheries Survey produced by the Devon River Authority; which was carried out from May to October 1965. The objective was to examine the distribution and relative abundance of salmonid fish in the River Dart, in order to assess the possibility or desirability, of increasing salmon smolt production of the river by artificial propagation or other means.Description, chemical, pollution and biological conditions of the River Dart along with fisheries catches, water extraction and spawning are briefly cited. The method includes the choice of sections and sampling techniques. The results go through the number/type/class of fishes counted while the survey took place, distribution patterns within the different transects/brooks, competition between salmon parr and trout and estimations of population. The section on the discussion and recommendations is introduced by a brief explanation of the bases for the Artificial Propagation Programme and the River Dart specific case-study. The annexes contains River Dart and tributaries maps, fish size distribution tables and figures, tables with totals of salmonid fish found and population density tables.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; South West ; River Dart ; Rivers ; River fisheries ; Freshwater fish ; Salmon fisheries ; Salmo salar ; Salmo trutta ; Fishery surveys ; Fish populations ; Population structure ; Stock assessment
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 37
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  • 10
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    River Dart fisheries survey 1969 (2021)
    Devon River Authority | Exeter, UK
    In:  dis@fba.org.uk | http://aquaticcommons.org/id/eprint/10873 | 1256 | 2013-03-26 13:52:09 | 10873 | Environment Agency, UK (Freshwater Biological Association)
    Details
    Publication Date: 2021-07-01
    Description: This is the second River Dart Fisheries Survey produced by the Devon River Authority; which was carried out from April to July, 1969. The objective was to examine the distribution and relative abundance of salmonid fish in the River Dart, in order to assess the possibility or desirability, of increasing salmon smolt production of the river by artificial propagation or other means.In addition to the tributaries examined in the 1965 survey, further sections were studied on the River Hems and Holy Brook and reference should be made to the River Survey Report, 1965 for introductory information. The method includes the choice of sections and sampling techniques. The results go through the number/type/class of fishes counted while the survey took place and distribution patterns within the different transects/brooks. The discussion tries to remark the importance of understanding the differences between 1965 and 1969 surveys. The Appendix contains tables with totals of salmonid fish found and distribution sizes for each section, population density tables and a map with new surveyed sections.
    Description: Environment Agency Archives South West
    Keywords: Fisheries ; Limnology ; Management ; England ; South West ; River Dart ; Rivers ; River fisheries ; Freshwater fish ; Migratory species ; Salmon fisheries ; Salmo salar ; Salmo trutta ; Fishery surveys ; Fish populations ; Population structure ; Stock assessment
    Repository Name: AquaDocs
    Type: monograph
    Format: application/pdf
    Format: application/pdf
    Format: 30
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