Biotic and abiotic influences on the recruitment of male perch in Windermere, U.K

Perch Perca fluviatilis recruitment (based on the catch per unit effort, CPUE, of 2 or 3 year male perch) varied greatly from 1941 to 1995 in Windermere, U.K., with year class strengths strongly synchronous between the two basins of this temperate, mesotrophic lake. Statistically significant modifie...

Full description

Bibliographic Details
Main Authors: Paxton, C G M, Winfield, I J, Fletcher, J M, George, D G, Hewitt, D P
Format: Article in Journal/Newspaper
Language:English
Published: 2004
Subjects:
climate
Esox lucius
reproduction
temperature
year class strength
zooplankton
STIZOSTEDION-VITREUM-VITREUM
NORTH-ATLANTIC OSCILLATION
PIKE ESOX-LUCIUS
FLUVIATILIS L
YELLOW PERCH
POPULATION-DYNAMICS
GULF-STREAM
LONG-TERM
CLASS STRENGTHS
LAKE
North Atlantic
North Atlantic oscillation
Online Access:https://research-portal.st-andrews.ac.uk/en/researchoutput/biotic-and-abiotic-influences-on-the-recruitment-of-male-perch-in-windermere-uk(09950158-2360-419c-ac20-15829bd002e1).html
https://doi.org/10.1111/j.1095-8649.2004.00573.x
http://www.scopus.com/inward/record.url?scp=11944266914&partnerID=8YFLogxK
Description
Summary:Perch Perca fluviatilis recruitment (based on the catch per unit effort, CPUE, of 2 or 3 year male perch) varied greatly from 1941 to 1995 in Windermere, U.K., with year class strengths strongly synchronous between the two basins of this temperate, mesotrophic lake. Statistically significant modified Ricker (Saila-Lorda) stock-recruitment curves could be fitted to data from three of four sampling sites, while the presence of widespread disease and late summer water temperature were also important explanatory variables. Multiple-regression analyses revealed no influences of pike Esox lucius recruitment, zooplankton abundance, or the climatic influences (i.e. North Atlantic Oscillation and displacement of the summer position of the Gulf Stream) on perch recruitment over and above associated influences from temperature. Fitted models realistically explained up to c. 60% of the observed variation in perch recruitment. (C) 2004 The Fisheries Society of the British Isles.

Similar Items