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

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 corre...

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Bibliographic Details
Published in:Journal of Fish Biology
Main Authors: Elliott, J.M., Hurley, Margaret Anne, Maberly, S.C.
Format: Article in Journal/Newspaper
Language:unknown
Published: Wiley 2000
Subjects:
C160 - Marine/Freshwater biology
North Atlantic
North Atlantic oscillation
Online Access:http://clok.uclan.ac.uk/17433/
https://doi.org/10.1111/j.1095-8649.2000.tb02096.x
Description
Summary: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.

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