Top‐down control of a marine mesopredator: Increase in native white‐tailed eagles accelerates the extinction of an endangered seabird population Article Swipe
Tycho Anker‐Nilssen
,
Annette L. Fayet
,
Tomas Aarvak
·
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.1111/1365-2664.14343
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.1111/1365-2664.14343
Bottom‐up control is an important regulator of marine mesopredators such as seabirds. The prevalence of top‐down control on these species is however less well understood. In particular, how native predators affect seabird populations has rarely been quantified. Here, we investigate how an increase in white‐tailed eagles in northern Norway, a stronghold for the species, affected a local population of 25,000 pairs of black‐legged kittiwakes, a red‐listed seabird, during a 42‐year period ending with colony extinction. We use a natural experiment of two neighbouring colonies with/without eagle predation to disentangle the effects of eagles from local kittiwake foraging conditions (using size of young herring as a proxy). At the colony where eagle predation occurred, and in contrast to the eagle‐free colony, kittiwake breeding success and population size declined with increased eagle abundance, the latter more strongly under poor foraging conditions. Breeding success increased with improving foraging conditions at both colonies. Simple population modelling shows that although conditions were insufficient to sustain the eagle‐exposed colony, the increased abundance of eagles sped up its extirpation by many years. Policy implications . Our study shows that top‐down effects from avian predators can be significant regulators of seabird populations, challenging their conservation where native, often protected, predators are rising. Such effects, and their possible interaction with other factors, must also be accounted for when using seabird demographic traits as environmental indicators and when developing more flexible and effective management and action plans.
Related Topics
Concepts
Seabird
Eagle
Mesopredator release hypothesis
Foraging
Predation
Ecology
Biology
Population
Apex predator
Endangered species
Abundance (ecology)
Fishery
Geography
Habitat
Demography
Sociology
Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1111/1365-2664.14343
- https://onlinelibrary.wiley.com/doi/pdfdirect/10.1111/1365-2664.14343
- OA Status
- hybrid
- Cited By
- 14
- References
- 51
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4319835727
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4319835727Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1111/1365-2664.14343Digital Object Identifier
- Title
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Top‐down control of a marine mesopredator: Increase in native white‐tailed eagles accelerates the extinction of an endangered seabird populationWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
-
2023Year of publication
- Publication date
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2023-01-22Full publication date if available
- Authors
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Tycho Anker‐Nilssen, Annette L. Fayet, Tomas AarvakList of authors in order
- Landing page
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https://doi.org/10.1111/1365-2664.14343Publisher landing page
- PDF URL
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https://onlinelibrary.wiley.com/doi/pdfdirect/10.1111/1365-2664.14343Direct link to full text PDF
- Open access
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YesWhether a free full text is available
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hybridOpen access status per OpenAlex
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https://onlinelibrary.wiley.com/doi/pdfdirect/10.1111/1365-2664.14343Direct OA link when available
- Concepts
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Seabird, Eagle, Mesopredator release hypothesis, Foraging, Predation, Ecology, Biology, Population, Apex predator, Endangered species, Abundance (ecology), Fishery, Geography, Habitat, Demography, SociologyTop concepts (fields/topics) attached by OpenAlex
- Cited by
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14Total citation count in OpenAlex
- Citations by year (recent)
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2025: 7, 2024: 3, 2023: 4Per-year citation counts (last 5 years)
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51Number of works referenced by this work
- Related works (count)
-
10Other works algorithmically related by OpenAlex
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| referenced_works | https://openalex.org/W2995145007, https://openalex.org/W6929822060, https://openalex.org/W2006946808, https://openalex.org/W2063466669, https://openalex.org/W2111869502, https://openalex.org/W2143892532, https://openalex.org/W2031841145, https://openalex.org/W3139151339, https://openalex.org/W2773728178, https://openalex.org/W3114771530, https://openalex.org/W2142548765, https://openalex.org/W2101204002, https://openalex.org/W2061513338, https://openalex.org/W2966203395, https://openalex.org/W2135237285, https://openalex.org/W2059076663, https://openalex.org/W2750335742, https://openalex.org/W2147901359, https://openalex.org/W2098876115, https://openalex.org/W3164037798, https://openalex.org/W7062391034, https://openalex.org/W2011477308, https://openalex.org/W2118713136, https://openalex.org/W4200580941, https://openalex.org/W2400082969, https://openalex.org/W3000662632, https://openalex.org/W1996929812, https://openalex.org/W2138293634, https://openalex.org/W2094838396, https://openalex.org/W2154443229, https://openalex.org/W2375329766, https://openalex.org/W2132472148, https://openalex.org/W3096645996, https://openalex.org/W2131644644, https://openalex.org/W3164698972, https://openalex.org/W2726326702, https://openalex.org/W1516701200, https://openalex.org/W2748463650, https://openalex.org/W3136278883, https://openalex.org/W4231684306, https://openalex.org/W2000836921, https://openalex.org/W3138125591, https://openalex.org/W2046756733, https://openalex.org/W3155215172, https://openalex.org/W2582743722, https://openalex.org/W2023116139, https://openalex.org/W206541622, https://openalex.org/W2155735377, https://openalex.org/W1969659045, https://openalex.org/W2021450648, https://openalex.org/W2132556874 |
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