Density-dependent refuge use among over-wintering wild Atlantic salmon juveniles

被引：33

作者：

Armstrong, JD ^{[1
]}

Griffiths, SW

机构：

[1] Freshwater Fisheries Lab, Fisheries Res Serv, Pitlochry PH16 5LB, Perth, Scotland

[2] Univ Glasgow, Dept Environm & Evolutionary Biol, IBLS, Glasgow G12 8QQ, Lanark, Scotland

来源：

JOURNAL OF FISH BIOLOGY | 2001年 / 58卷 / 06期

关键词：

Salmo salar; sheltering behaviour; density dependence; winter refugia; nocturnal behaviour; competition;

D O I：

10.1006/jfbi.2001.1554

中图分类号：

S9 [水产、渔业];

学科分类号：

0908 ;

摘要：

Sheltering behaviour of wild juvenile Atlantic salmon in an indoor stream was found to be density dependent; the proportion of fish sheltering decreased significantly with increasing population density. The mean number of fish occupying refugia was less than or equal to1.5 fish per refuge even at very high densities (potentially 5 fish per shelter). These results suggest that shelter availability has potentially important consequences for the carrying capacity for natural populations of salmon in streams.

引用

页码：1524 / 1530

页数：7

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