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Lake bathymetry and species occurrence predict the distribution of a lacustrine apex predator
Authors:M. R. Hughes  J. A. Dodd  P. S. Maitland  C. E. Adams
Affiliation:1. Scottish Centre for Ecology and the Natural Environment, Institute of Biomedical and Life Sciences, University of Glasgow, Loch Lomond, Glasgow, Scotland, U.K.;2. Fish Conservation Centre, East Lothian, Scotland, U.K.
Abstract:This study examined the abiotic and biotic characteristics of ecosystems that allow expression of a life history called ferox trout, the colloquial name given to brown trout Salmo trutta adopting a piscivorous life history strategy, an apex predator in post‐glacial lakes in northern Europe. One hundred and ninety‐two lakes in Scotland show evidence of currently, or historically, supporting ferox S. trutta; their presence was predicted in logistic models by larger and deeper lakes with a large catchment that also support populations of Arctic charr Salvelinus alpinus.
Keywords:apex predator  Arctic charr  brown trout  ferox S. trutta  post‐glacial lakes  Scotland
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