Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/127538
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Type: Journal article
Title: Trophic pyramids reorganize when food web architecture fails to adjust to ocean change
Author: Nagelkerken, I.
Goldenberg, S.U.
Ferreira, C.M.
Ullah, H.
Connell, S.D.
Citation: Science, 2020; 369(6505):829-832
Publisher: American Association for the Advancement of Science
Issue Date: 2020
ISSN: 0036-8075
1095-9203
Statement of
Responsibility: 
Ivan Nagelkerken, Silvan U. Goldenberg, Camilo M. Ferreira, Hadayet Ullah, Sean D. Connell
Abstract: As human activities intensify, the structures of ecosystems and their food webs often reorganize. Through the study of mesocosms harboring a diverse benthic coastal community, we reveal that food web architecture can be inflexible under ocean warming and acidification and unable to compensate for the decline or proliferation of taxa. Key stabilizing processes, including functional redundancy, trophic compensation, and species substitution, were largely absent under future climate conditions. A trophic pyramid emerged in which biomass expanded at the base and top but contracted in the center. This structure may characterize a transitionary state before collapse into shortened, bottom-heavy food webs that characterize ecosystems subject to persistent abiotic stress. We show that where food web architecture lacks adjustability, the adaptive capacity of ecosystems to global change is weak and ecosystem degradation likely.
Keywords: Animals; Acids; Food Chain; Hydrogen-Ion Concentration; Oceans and Seas; Global Warming
Rights: Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works
RMID: 1000025288
DOI: 10.1126/science.aax0621
Grant ID: http://purl.org/au-research/grants/arc/FT120100183
http://purl.org/au-research/grants/arc/DP170101722
http://purl.org/au-research/grants/arc/FT0991953
Appears in Collections:Environment Institute publications

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