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Hemispheric asymmetry in ocean change and the productivity of ecosystem sentinels
Journal article   Open access   Peer reviewed

Hemispheric asymmetry in ocean change and the productivity of ecosystem sentinels

W. J Sydeman, D. S Schoeman, S. A Thompson, B. A Hoover, M García-Reyes, F Daunt, P Agnew, T Anker-Nilssen, C Barbraud, R Barrett, …
Science, Vol.372(6545), pp.980-983
2021
PMID: 34045354
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Hemispheric asymmetry in ocean change and the productivity of ecosystem sentinels261.79 kBDownloadView
Accepted Version Open Access
url
https://doi.org/10.1126/science.abf1772View
Published Version

Expert Quote   15-Feb-2025

UniSC News (Clare McKay)

Abstract

hemispheric asymmetry ocean change ecosystem sentinel seabirds breeding success fish resources
Climate change and other human activities are causing profound effects on marine ecosystem productivity. We show that the breeding success of seabirds is tracking hemispheric differences in ocean warming and human impacts, with the strongest effects on fish-eating, surface-foraging species in the north. Hemispheric asymmetry suggests the need for ocean management at hemispheric scales. For the north, tactical, climate-based recovery plans for forage fish resources are needed to recover seabird breeding productivity. In the south, lower-magnitude change in seabird productivity presents opportunities for strategic management approaches such as large marine protected areas to sustain food webs and maintain predator productivity. Global monitoring of seabird productivity enables the detection of ecosystem change in remote regions and contributes to our understanding of marine climate impacts on ecosystems.

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Ecology

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#13 Climate Action
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#15 Life on Land

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