Impacts of climatic change and fishing on Pacific salmon abundance over the past 300 years

B. P. Finney, I. Gregory-Eaves, J. Sweetman, M. S.V. Douglas, J. P. Smol

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286 Scopus citations


The effects of climate variability on Pacific salmon abundance are uncertain because historical records are short and are complicated by commercial harvesting and habitat alteration. We use lake sediment records of δ15N and biological indicators to reconstruct sockeye salmon abundance in the Bristol Bay and Kodiak Island regions of Alaska over the past 300 years. Marked shifts in populations occurred over decades during this period, and some pronounced changes appear to be related to climatic change. Variations in salmon returns due to climate or harvesting can have strong impacts on sockeye nursery lake productivity in systems where adult salmon carcasses are important nutrient sources.

Original languageEnglish (US)
Pages (from-to)795-799
Number of pages5
Issue number5492
StatePublished - Oct 27 2000

All Science Journal Classification (ASJC) codes

  • General

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