Causes and projections of abrupt climate-driven ecosystem shifts in the North Atlantic

Type : ACL
Nature : Production scientifique
Au bénéfice du Laboratoire : Oui
Statut de publication : Publié
Année de publication : 2008
Auteurs (5) : BEAUGRAND Grégory EDWARDS M BRANDER K LUCZAK C IBANEZ Frédéric
Revue scientifique : Ecology Letters
Volume : 11
Fascicule : 11
Pages : 1157-1168
DOI : 10.1111/j.1461-0248.2008.01218.x
URL : https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1461-0248.2008.01218.x
Abstract : Abstract Warming of the global climate is now unequivocal and its impact on Earth’ functional units has become more apparent. Here, we show that marine ecosystems are not equally sensitive to climate change and reveal a critical thermal boundary where a small increase in temperature triggers abrupt ecosystem shifts seen across multiple trophic levels. This large-scale boundary is located in regions where abrupt ecosystem shifts have been reported in the North Atlantic sector and thereby allows us to link these shifts by a global common phenomenon. We show that these changes alter the biodiversity and carrying capacity of ecosystems and may, combined with fishing, precipitate the reduction of some stocks of Atlantic cod already severely impacted by exploitation. These findings offer a way to anticipate major ecosystem changes and to propose adaptive strategies for marine exploited resources such as cod in order to minimize social and economic consequences.
Mots-clés : Abrupt ecosystem shift, critical thermal boundary, North Atlantic Ocean, plankton, the Atlantic cod, variance
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Citation :
Beaugrand G, Edwards M, Brander K, Luczak C, Ibanez F (2008) Causes and projections of abrupt climate-driven ecosystem shifts in the North Atlantic. Ecol Lett 11: 1157-1168 | doi: 10.1111/j.1461-0248.2008.01218.x