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The NWFSC Scientific Publications Database serves as an archival repository of NWFSC-published products including scientific findings, journal articles, technical memorandums, reports, or other information authored or co-authored by NWFSC or funded partners. As a repository, the SPD retains documents in their original published format to ensure public access to scientific information.

NOAA Fisheries Northwest Science Center Publication Details

CitationWater Temperature, Prey Concentration and Salmonid Density Influence Daily Growth of Wild Juvenile Salmonids in Tributaries of the Upper Salmon River, Idaho (USA) (https://doi.org/10.1111/fwb.14380)
TitleWater temperature, food availability, and fish density shape summer growth of juvenile salmonids in wilderness streams of Central Idaho, USA
Publication Year2025
VolumeNA
Keywordsdensity dependence, food availability, anadromous, salmonids, somatic growth, climate change, competition, water temperature, streams
AbstractSomatic growth in ectothermic organisms is a result of complex interactions between the individual and its environment, and is a key predictor of fitness. Key growth-limiting environmental factors include temperature, food availability, and biotic interactions. Interactions between these factors are expected, but are rarely examined simultaneously in natural populations of mobile species. Here we explore the individual and interactive effects of food availability, defined as drifting invertebrate biomass, water temperature, and the local density of juvenile Chinook salmon on otolith-estimated summer growth (mm/d) of anadromous (migrate between fresh and saltwater) juvenile Chinook salmon (n= 384) and sub-yearling (n = 61) and yearling (n = 70) juvenile steelhead trout rearing in seven cold mountain streams in central Idaho tributary to the Pacific Ocean. We used linear mixed-effects models and the AICc criterion to select the best model predicting annual variation in summer growth, whi
Official CitationWater Temperature, Prey Concentration and Salmonid Density Influence Daily Growth of Wild Juvenile Salmonids in Tributaries of the Upper Salmon River, Idaho (USA)
Links (https://doi.org/10.1111/fwb.14380)