Year class strengths of perch and pike in Windermere
The pike (Esox lucius) year classes are more stable than those of the perch (Perca fluviatilis), and have been shown to be closely correlated with temp conditions during the first few months of life. The perch year class strengths have been more variable; for success they require the presence of several positive conditions and the absence of many adverse conditions which could cause failure, a favourable combination of circumstances rarely occurs. The conclusions refer only to Windermere from 1941-1964.
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| Main Author: | |
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| Format: | book_section biblioteca |
| Language: | English |
| Published: |
Freshwater Biological Association
1976
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| Subjects: | Biology, Ecology, Limnology, Age composition, Esox lucius, Perca fluviatilis, England, Lake District, Annual report, |
| Online Access: | http://hdl.handle.net/1834/22681 |
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| Summary: | The pike (Esox lucius) year classes are more stable than those of the perch (Perca fluviatilis), and have been shown to be closely correlated with temp conditions during the first few months of life. The perch year class strengths have been more variable; for success they require the presence of several positive conditions and the absence of many adverse conditions which could cause failure, a favourable combination of circumstances rarely occurs. The conclusions refer only to Windermere from 1941-1964. |
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