The emergence period of sea trout fry in a Lake District stream correlates with the North Atlantic Oscillation

被引:21
作者
Elliott, JM [1 ]
Hurley, MA [1 ]
Maberly, SC [1 ]
机构
[1] Inst Freshwater Ecol, Windermere Lab, NERC, Ctr Ecol & Hydrol, Ambleside LA22 0LP, Cumbria, England
关键词
climate change; long-term studies; NAO; Salmo trutta; temperature;
D O I
10.1111/j.1095-8649.2000.tb02096.x
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
The date of fry emergence over 30 years in a sea trout nursery stream, predicted by an individual-based model, correlated significantly (r=0.660, P<0.001) with an index of the North Atlantic Oscillation. Water temperature is the main driving variable in the model and stream temperature also correlated significantly (r=0.662, P<0.001) with the index, providing a probable causal link. Therefore, the inter-annual variations in emergence may not be unique to this one stream, but may be typical of other trout streams with similar climatic conditions. (C) 2000 The Fisheries Society of the British Isles.
引用
收藏
页码:208 / 210
页数:3
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