Impacts of climate change and fishing on the Pacific Salmon abundance over the past 300 years
Finney BP, Gregory-Eaves I, Sweetman J, Douglas MV, Smol JP. 2000. Impacts of climate change and fishing on the Pacific Salmon abundance over the past 300 years. Science. 290(5492):795-799
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 delta N-15 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.
- Type
- Journal Article
- Authors
- Finney, Bruce; Gregory-Eaves, Irene; Sweetman, Jon; Douglas, Marianne; Smol, John
- Units
- ANIA , KATM , KEFJ
- Keywords
- Alaska, Atmospheric Sciences, Bristol Bay, climate variability, Climatology, Coastal, Fisheries Management, History, Inventory and Monitoring (I&M), Kodiak Island, Oncorhynchus, Pacific Salmon