Seabird Trophic Position Across Three Ocean Regions Tracks Ecosystem Differences

Online repository of data and script for: https://www.frontiersin.org/articles/10.3389/fmars.2018.00317/full. 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 At...

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Bibliographic Details
Main Author: Gagne, Tyler
Format: Text
Language:unknown
Published: Open Science Framework 2021
Subjects:
fisheries
food web
machine learning
marine ecology
trophic ecology
Pacific
North Atlantic
Online Access:https://dx.doi.org/10.17605/osf.io/4s9ty
https://osf.io/4s9ty/
Description
Summary:Online repository of data and script for: https://www.frontiersin.org/articles/10.3389/fmars.2018.00317/full. 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.

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