AustralieFrV1, Main, Curation, bibRecord, 003E04

From projected species distribution to food‐web structure under climate change

Identifieur interne : 003E04 ( Main/Curation ); précédent : 003E03; suivant : 003E05

From projected species distribution to food‐web structure under climate change

Auteurs : Camille Albouy [France, Canada] ; Laure Velez [France] ; Marta Coll [Espagne, Canada] ; Francesco Colloca [Italie] ; François Le Loc'H [France] ; David Mouillot [France, Australie] ; Dominique Gravel [Canada]

Source :

Global Change Biology [ 1354-1013 ] ; 2014-03.

RBID : ISTEX:E9D695E8C0EBB3A295CF28222D4C15CCE1D643DC

Descripteurs français

Pascal (Inist)
- Aire de distribution, Changement climatique, Mer Méditerranée, Milieu marin, Modèle, Niche écologique, Répartition spatiale, Réseau trophique, Structure trophique, Taille corporelle, Vulnérabilité.
Wicri :
- topic : Changement climatique, Mer Méditerranée, Milieu marin.

English descriptors

KwdEn :
- Body size, Climate change, Distribution range, Ecological niche, Food web, Marine environment, Mediterranean Sea, Models, Spatial distribution, Trophic structure, Vulnerability.

Abstract

Climate change is inducing deep modifications in species geographic ranges worldwide. However, the consequences of such changes on community structure are still poorly understood, particularly the impacts on food‐web properties. Here, we propose a new framework, coupling species distribution and trophic models, to predict climate change impacts on food‐web structure across the Mediterranean Sea. Sea surface temperature was used to determine the fish climate niches and their future distributions. Body size was used to infer trophic interactions between fish species. Our projections reveal that 54 fish species of 256 endemic and native species included in our analysis would disappear by 2080–2099 from the Mediterranean continental shelf. The number of feeding links between fish species would decrease on 73.4% of the continental shelf. However, the connectance of the overall fish web would increase on average, from 0.26 to 0.29, mainly due to a differential loss rate of feeding links and species richness. This result masks a systematic decrease in predator generality, estimated here as the number of prey species, from 30.0 to 25.4. Therefore, our study highlights large‐scale impacts of climate change on marine food‐web structure with potential deep consequences on ecosystem functioning. However, these impacts will likely be highly heterogeneous in space, challenging our current understanding of climate change impact on local marine ecosystems.

Url:

https://api.istex.fr/document/E9D695E8C0EBB3A295CF28222D4C15CCE1D643DC/fulltext/pdf

DOI: 10.1111/gcb.12467

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ISTEX:E9D695E8C0EBB3A295CF28222D4C15CCE1D643DC

Le document en format XML

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<front><div type="abstract" xml:lang="en">Climate change is inducing deep modifications in species geographic ranges worldwide. However, the consequences of such changes on community structure are still poorly understood, particularly the impacts on food-web properties. Here, we propose a new framework, coupling species distribution and trophic models, to predict climate change impacts on food-web structure across the Mediterranean Sea. Sea surface temperature was used to determine the fish climate niches and their future distributions. Body size was used to infer trophic interactions between fish species. Our projections reveal that 54 fish species of 256 endemic and native species included in our analysis would disappear by 2080-2099 from the Mediterranean continental shelf. The number of feeding links between fish species would decrease on 73.4% of the continental shelf. However, the connectance of the overall fish web would increase on average, from 0.26 to 0.29, mainly due to a differential loss rate of feeding links and species richness. This result masks a systematic decrease in predator generality, estimated here as the number of prey species, from 30.0 to 25.4. Therefore, our study highlights large-scale impacts of climate change on marine food-web structure with potential deep consequences on ecosystem functioning. However, these impacts will likely be highly heterogeneous in space, challenging our current understanding of climate change impact on local marine ecosystems.</div>
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<front><div type="abstract">Climate change is inducing deep modifications in species geographic ranges worldwide. However, the consequences of such changes on community structure are still poorly understood, particularly the impacts on food‐web properties. Here, we propose a new framework, coupling species distribution and trophic models, to predict climate change impacts on food‐web structure across the Mediterranean Sea. Sea surface temperature was used to determine the fish climate niches and their future distributions. Body size was used to infer trophic interactions between fish species. Our projections reveal that 54 fish species of 256 endemic and native species included in our analysis would disappear by 2080–2099 from the Mediterranean continental shelf. The number of feeding links between fish species would decrease on 73.4% of the continental shelf. However, the connectance of the overall fish web would increase on average, from 0.26 to 0.29, mainly due to a differential loss rate of feeding links and species richness. This result masks a systematic decrease in predator generality, estimated here as the number of prey species, from 30.0 to 25.4. Therefore, our study highlights large‐scale impacts of climate change on marine food‐web structure with potential deep consequences on ecosystem functioning. However, these impacts will likely be highly heterogeneous in space, challenging our current understanding of climate change impact on local marine ecosystems.</div>
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From projected species distribution to food‐web structure under climate change

From projected species distribution to food‐web structure under climate change

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