Seabird trophic position across three ocean regions tracks ecosystem differences

dc.contributor.author

Gagné, TO

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Hyrenbach, KD

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Hagemann, ME

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Bass, OL

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Pimm, SL

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MacDonald, M

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Peck, B

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Van Houtan, KS

dc.date.accessioned

2021-08-02T17:16:55Z

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2021-08-02T17:16:55Z

dc.date.issued

2018-09-07

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2021-08-02T17:16:53Z

dc.description.abstract

We analyze recently collected feather tissues from two species of seabirds, the sooty tern (Onychoprion fuscatus) and brown noddy (Anous stolidus), in three ocean regions (North Atlantic, North Pacific, and South Pacific) with different human impacts. The species are similar morphologically and in the trophic levels from which they feed within each location. In contrast, we detect reliable differences in trophic position amongst the regions. Trophic position appears to decline as the intensity of commercial fishing increases, and is at its lowest in the Caribbean. The spatial gradient in trophic position we document in these regions exceeds those detected over specimens from the last 130 years in the Hawaiian Islands. Modeling suggests that climate velocity and human impacts on fish populations strongly align with these differences.

dc.identifier.issn

2296-7745

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https://hdl.handle.net/10161/23530

dc.language

English

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Frontiers Media SA

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Frontiers in Marine Science

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10.3389/fmars.2018.00317

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Science & Technology

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Life Sciences & Biomedicine

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Environmental Sciences

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Marine & Freshwater Biology

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Environmental Sciences & Ecology

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trophic ecology

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commercial fisheries

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ocean memory

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global change

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machine learning

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stable isotopes

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food webs

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MARINE

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ECOLOGY

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INDICATORS

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IMPACTS

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Seabird trophic position across three ocean regions tracks ecosystem differences

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Journal article

duke.contributor.orcid

Pimm, SL|0000-0003-4206-2456

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SEP

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Nicholas School of the Environment

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Environmental Sciences and Policy

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Duke Science & Society

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Duke

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Initiatives

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Institutes and Provost's Academic Units

pubs.publication-status

Published

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5

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