Strontium isotopes delineate fine-scale natal origins and migration histories of Pacific salmon

Science Advances
By: , and 

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Abstract

Highly migratory organisms present major challenges to conservation efforts. This is especially true for exploited anadromous fish species, which exhibit long-range dispersals from natal sites, complex population structures, and extensive mixing of distinct populations during exploitation. By tracing the migratory histories of individual Chinook salmon caught in fisheries using strontium isotopes, we determined the relative production of natal habitats at fine spatial scales and different life histories. Although strontium isotopes have been widely used in provenance research, we present a new robust framework to simultaneously assess natal sources and migrations of individuals within fishery harvests through time. Our results pave the way for investigating how fine-scale habitat production and life histories of salmon respond to perturbations—providing crucial insights for conservation.

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Strontium isotopes delineate fine-scale natal origins and migration histories of Pacific salmon
Series title Science Advances
DOI 10.1126/sciadv.1400124
Volume 1
Issue 4
Year Published 2015
Language English
Publisher AAAS
Contributing office(s) Alaska Science Center Geography
Description 7 p.
Country United States
State Alaska
Other Geospatial Nushagak River
Online Only (Y/N) N
Additional Online Files (Y/N) N