湖泊测深图和物种出现情况可预测湖泊顶级捕食者的分布。

Lake bathymetry and species occurrence predict the distribution of a lacustrine apex predator.

作者信息

Hughes M R, Dodd J A, Maitland P S, Adams C E

机构信息

Scottish Centre for Ecology and the Natural Environment, Institute of Biomedical and Life Sciences, University of Glasgow, Loch Lomond, Glasgow, G63 OAW, Scotland, U.K.

Fish Conservation Centre, Gladshot, Haddington, East Lothian, EH41 4NR, Scotland, U.K.

出版信息

J Fish Biol. 2016 Apr;88(4):1648-54. doi: 10.1111/jfb.12919. Epub 2016 Feb 22.

DOI:10.1111/jfb.12919

PMID:26899559

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.

摘要

本研究调查了生态系统的非生物和生物特征，这些特征使得一种被称为凶猛鳟鱼的生活史得以展现。凶猛鳟鱼是褐鳟（Salmo trutta）的俗称，它采用肉食性的生活史策略，是北欧冰后期湖泊中的顶级捕食者。苏格兰的192个湖泊显示出目前或历史上曾支持过凶猛褐鳟生存的证据；在逻辑模型中，较大且较深、拥有大面积集水区且也有北极红点鲑（Salvelinus alpinus）种群的湖泊被预测会有凶猛褐鳟存在。