Data_Sheet_1_Seabird Trophic Position Across Three Ocean Regions Tracks Ecosystem Differences.pdf

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 t...

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Bibliographic Details
Main Authors: Tyler O. Gagné, K. David Hyrenbach, Molly E. Hagemann, Oron L. Bass, Stuart L. Pimm, Mark MacDonald, Brian Peck, Kyle S. Van Houtan
Format: Dataset
Language:unknown
Published: 2018
Subjects:
Oceanography
Marine Biology
Marine Geoscience
Biological Oceanography
Chemical Oceanography
Physical Oceanography
Marine Engineering
trophic ecology
commercial fisheries
ocean memory
global change
machine learning
stable isotopes
food webs
Pacific
North Atlantic
Online Access:https://doi.org/10.3389/fmars.2018.00317.s001
https://figshare.com/articles/Data_Sheet_1_Seabird_Trophic_Position_Across_Three_Ocean_Regions_Tracks_Ecosystem_Differences_pdf/7058924
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Summary: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.

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