Cracking the Code: Unveiling How Methodology Shapes Temperature's Impact on Young Atlantic Salmon Growth

May 16, 2024

Methodological influence on detecting temperature effects on growth variability in juvenile Atlantic salmon.

In studying how warming waters affect Atlantic salmon populations, understanding how temperature impacts their growth asjuveniles is crucial.

However, accurately measuring this impact is challenging due to different research methods and growth metrics used.

Researchers compared two modeling approaches using data from the Margaree and Miramichi rivers in Canada from 2000 to 2002. They found that one method, focusing on seasonalgrowth patterns (VBGF), didn't show a clear temperature effect on growth. In contrast, another method using instantaneous growth rates from the same data strongly linked growth to temperature.

However, these instantaneous rates couldn't predict fish size at the end of the season, essential for fisheries management.

By combining both approaches, they showed that a combined model could detect temperature effects on growth and predict end-of-season fish size accurately. This study highlights how integrating different modeling techniquescan reveal important ecological patterns affected by temperature, enhancing our understanding and management of Atlantic salmon populations.

Link to publication
Contributors
Jean-Michel Matte
Guillaume J.R. Dauphin
Guillaume J.R. Dauphin
André St-Hilaire
Carole-Anne Gillis
Normand E. Bergeron
Cindy Breau
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