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The tropicalization of temperate marine ecosystems: climate-mediated changes in herbivory and community phase shifts

ScholarsArchive at Oregon State University

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Title The tropicalization of temperate marine ecosystems: climate-mediated changes in herbivory and community phase shifts
Names Vergés, Adriana (creator)
Steinberg, Peter D. (creator)
Hay, Mark E. (creator)
Poore, Alistair G. (creator)
Campbell, Alexandra H. (creator)
Ballesteros, Enric (creator)
Tomas, Fiona (creator)
et al. (creator)
Date Issued 2014-08-22 (iso8601)
Note This is an author's peer-reviewed final manuscript as accepted by the publisher. The published article is copyrighted by the Author(s) and published by The Royal Society. It can be found at: http://rspb.royalsocietypublishing.org/
Abstract Climate-driven changes in biotic interactions can profoundly alter ecological
communities, particularly when they impact foundation species. In marine systems,
changes in herbivory and the consequent loss of dominant habitat forming species can
result in dramatic community phase shifts, such as from coral to macroalgal
dominance when tropical fish herbivory decreases, and from algal forests to ‘barrens’
when temperate urchin grazing increases. Here, we propose a novel phase-shift away
from macroalgal dominance caused by tropical herbivores extending their range into
temperate regions. We argue that this phase shift is facilitated by poleward-flowing
boundary currents that are creating ocean warming hotspots around the globe,
enabling the range expansion of tropical species and increasing their grazing rates in
temperate areas. Overgrazing of temperate macroalgae by tropical herbivorous fishes
has already occurred in Japan and the Mediterranean. Emerging evidence suggests
similar phenomena are occurring in other temperate regions, with increasing
occurrence of tropical fish on temperate reefs.
Genre Article
Topic Climate change
Identifier Vergés, A., Steinberg, P. D., Hay, M. E., Poore, A. G. B., Campbell, A. H., Ballesteros, E., ... & Wilson, S. K. (2014). The tropicalization of temperate marine ecosystems: climate-mediated changes in herbivory and community phase shifts. Proceedings of the Royal Society B: Biological Sciences, 281(1789), 20140846. doi:10.1098/rspb.2014.0846

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