Juvenile salmon usage of the Skeena River estuary

PloS One
C Carr-HarrisJonathan W Moore

Abstract

Migratory salmon transit estuary habitats on their way out to the ocean but this phase of their life cycle is more poorly understood than other phases. The estuaries of large river systems in particular may support many populations and several species of salmon that originate from throughout the upstream river. The Skeena River of British Columbia, Canada, is a large river system with high salmon population- and species-level diversity. The estuary of the Skeena River is under pressure from industrial development, with two gas liquefaction terminals and a potash loading facility in various stages of environmental review processes, providing motivation for understanding the usage of the estuary by juvenile salmon. We conducted a juvenile salmonid sampling program throughout the Skeena River estuary in 2007 and 2013 to investigate the spatial and temporal distribution of different species and populations of salmon. We captured six species of juvenile anadromous salmonids throughout the estuary in both years, and found that areas proposed for development support some of the highest abundances of some species of salmon. Specifically, the highest abundances of sockeye (both years), Chinook in 2007, and coho salmon in 2013 were captu...Continue Reading

Citations

Aug 8, 2015·Science·Jonathan W MooreBill Shepert
Jan 14, 2017·Science·Juan José Alava, Nastenka Calle

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Methods Mentioned

BETA
GAM

Software Mentioned

BAYES
R programming environment
GeneMapper
mgcv

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