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Climate drives the geography of marine consumption by changing predator communities

Whalen Matthew A., Whippo Ross D. B., Stachowicz John J., York Paul H., Aiello Erin, Alcoverro Teresa, Altieri Andrew H., Benedetti-Cecchi Lisandro, Bertolini Camilla, Bresch Midoli, Bulleri Fabio, Carnell Paul E., Cimon Stéphanie, Connolly Rod M., Cusson Mathieu, Diskin Meredith S., D’Souza Elrika, Flores Augusto A. V., Fodrie F. Joel, Galloway Aaron W. E., Gaskins Leo C., Graham Olivia J., Hanley Torrance C., Henderson Christopher J., Hereu Clara M., Hessing-Lewis Margot, Hovel Kevin A., Hughes Brent B., Hughes A. Randall, Hultgren Kristin M., Jänes Holger, Janiak Dean S., Johnston Lane N., Jorgensen Pablo, Kelaher Brendan P., Kruschel Claudia, Lanham Brendan S., Lee Kun-Seop, Lefcheck Jonathan S., Lozano-Álvarez Enrique, Macreadie Peter I., Monteith Zachary L., O’Connor Nessa E., Olds Andrew D., O’Leary Jennifer K., Patrick Christopher J., Pino Oscar, Poore Alistair G. B., Rasheed Michael A., Raymond Wendel W., Reiss Katrin, Rhoades O. Kennedy, Robinson Max T., Ross Paige G., Rossi Francesca, Schlacher Thomas A., Seemann Janina, Silliman Brian R., Smee Delbert L., Thiel Martin, Unsworth Richard K. F., van Tussenbroek Brigitta I., Vergés Adriana, Yeager Mallarie E., Yednock Bree K., Ziegler Shelby L. et Duffy J. Emmett. (2020). Climate drives the geography of marine consumption by changing predator communities. Proceedings of the National Academy of Sciences, 117, (45), p. 28160-28166.

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URL officielle: http://dx.doi.org/doi:10.1073/pnas.2005255117

Résumé

The global distribution of primary production and consumption by humans (fisheries) is well-documented, but we have no map linking the central ecological process of consumption within food webs to temperature and other ecological drivers. Using standardized assays that span 105° of latitude on four continents, we show that rates of bait consumption by generalist predators in shallow marine ecosystems are tightly linked to both temperature and the composition of consumer assemblages. Unexpectedly, rates of consumption peaked at midlatitudes (25 to 35°) in both Northern and Southern Hemispheres across both seagrass and unvegetated sediment habitats. This pattern contrasts with terrestrial systems, where biotic interactions reportedly weaken away from the equator, but it parallels an emerging pattern of a subtropical peak in marine biodiversity. The higher consumption at midlatitudes was closely related to the type of consumers present, which explained rates of consumption better than consumer density, biomass, species diversity, or habitat. Indeed, the apparent effect of temperature on consumption was mostly driven by temperature-associated turnover in consumer community composition. Our findings reinforce the key influence of climate warming on altered species composition and highlight its implications for the functioning of Earth’s ecosystems.

Type de document:Article publié dans une revue avec comité d'évaluation
ISSN:0027-8424
Volume:117
Numéro:45
Pages:p. 28160-28166
Version évaluée par les pairs:Oui
Date:2020
Identifiant unique:10.1073/pnas.2005255117
Sujets:Sciences naturelles et génie > Sciences appliquées > Climatologie et météorologie
Sciences naturelles et génie > Sciences appliquées > Eau et environnement
Sciences naturelles et génie > Sciences appliquées > Océanographie
Sciences naturelles et génie > Sciences naturelles > Biologie et autres sciences connexes
Département, module, service et unité de recherche:Départements et modules > Département des sciences fondamentales
Mots-clés:latitudinal diversity gradient, macroecology, biogeography, trophic processes, climate, seagrass
Déposé le:22 mars 2021 19:11
Dernière modification:22 mars 2021 19:11
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