River Dart Scale Reading Investigation Report on the 1967 Season
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).
| Main Author: | |
|---|---|
| Format: | monograph biblioteca |
| Language: | English |
| Published: |
Devon River Authority
1968
|
| Subjects: | Fisheries, Limnology, Management, England, South West, River Dart, River fisheries, Freshwater fish, Salmon fisheries, Fish populations, Population structure, Population dynamics, Migratory species, |
| Online Access: | http://hdl.handle.net/1834/27144 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | 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). |
|---|