ArticleScientific reports2017
Competing tradeoffs between increasing marine mammal predation and fisheries harvest of Chinook salmon.
Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.
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25 citing papers in PubMed, 109 citations in OpenAlex.
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- Increasing presence of Bigg's killer whales and changing seasonality of Southern Resident killer whales in Washington waters.PloS one · 2026Article
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- Pathogens from salmon aquaculture in relation to conservation of wild Pacific salmon in Canada.Science advances · 2024Review
- The global extent and severity of operational interactions between conflicting pinnipeds and fisheries.Nature communications · 2024Article
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- A multi-predator trophic database for the California Current Large Marine Ecosystem.Scientific data · 2023Article
- Estimating reproductive costs in marine mammal bioenergetic models: a review of current knowledge and data availability.Conservation physiology · 2023Article
- Individual variability in foraging success of a marine predator informs predator management.Scientific reports · 2022Article
- Data on the diets of Salish Sea harbour seals from DNA metabarcoding.Scientific data · 2022Article
- Requirements and availability of prey for northeastern pacific southern resident killer whales.PloS one · 2022Article
- Climate change threatens Chinook salmon throughout their life cycle.Communications biology · 2021Article
- Endangered predators and endangered prey: Seasonal diet of Southern Resident killer whales.PloS one · 2021Article
- Differential impacts of freshwater and marine covariates on wild and hatchery Chinook salmon marine survival.PloS one · 2021Article
- Environmentally triggered shifts in steelhead migration behavior and consequences for survival in the mid-Columbia River.PloS one · 2021Article
- Large-scale molecular barcoding of prey DNA reveals predictors of intrapopulation feeding diversity in a marine predator.Ecology and evolution · 2020Article
- Recent declines in salmon body size impact ecosystems and fisheries.Nature communications · 2020Article
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Corrections and comments
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Authors and funding
14 authors at 8 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Many marine mammal predators, particularly pinnipeds, have increased in abundance in recent decades, generating new challenges for balancing human uses with recovery goals via ecosystem-based management. We used a spatio-temporal bioenergetics model of the Northeast Pacific Ocean to quantify how predation by three species of pinnipeds and killer whales (Orcinus orca) on Chinook salmon (Oncorhynchus tshawytscha) has changed since the 1970s along the west coast of North America, and compare these estimates to salmon fisheries. We find that from 1975 to 2015, biomass of Chinook salmon consumed by pinnipeds and killer whales increased from 6,100 to 15,200 metric tons (from 5 to 31.5 million individual salmon). Though there is variation across the regions in our model, overall, killer whales consume the largest biomass of Chinook salmon, but harbor seals (Phoca vitulina) consume the largest number of individuals. The decrease in adult Chinook salmon harvest from 1975-2015 was 16,400 to 9,600 metric tons. Thus, Chinook salmon removals (harvest + consumption) increased in the past 40 years despite catch reductions by fisheries, due to consumption by recovering pinnipeds and endangered killer whales. Long-term management strategies for Chinook salmon will need to consider potential conflicts between rebounding predators or endangered predators and prey.
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