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Published on: November 20, 2017
Lake bathymetry and species occurrence predict the distribution of a lacustrine apex predator
M R Hughes1, J A Dodd1, P S Maitland2
1Scottish Centre for Ecology and the Natural Environment, Institute of Biomedical and Life Sciences, University of Glasgow, Loch Lomond, Glasgow, G63 OAW, 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.
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