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Auteur Mouillot, D.; Graham, N.A.J.; Villeger, S.; Mason, N.W.H.; Bellwood, D.R.
Titre A functional approach reveals community responses to disturbances Type Article scientifique
Année (down) 2013 Publication Revue Abrégée Trends in Ecology & Evolution
Volume 28 Numéro 3 Pages 167-177
Mots-Clés 4th-corner problem; biological traits; climate-change; extinction; fish communities; induced tree mortality; multiple traits; plant-communities; risk; species traits; wood density
Résumé Understanding the processes shaping biological communities under multiple disturbances is a core challenge in ecology and conservation science. Traditionally, ecologists have explored linkages between the severity and type of disturbance and the taxonomic structure of communities. Recent advances in the application of species traits, to assess the functional structure of communities, have provided an alternative approach that responds rapidly and consistently across taxa and ecosystems to multiple disturbances. Importantly, trait-based metrics may provide advanced warning of disturbance to ecosystems because they do not need species loss to be reactive. Here, we synthesize empirical evidence and present a theoretical framework, based on species positions in a functional space, as a tool to reveal the complex nature of change in disturbed ecosystems.
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ISSN 0169-5347 ISBN Médium
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Numéro d'Appel MARBEC @ isabelle.vidal-ayouba @ collection 402
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Auteur Gravel, D.; Poisot, T.; Albouy, C.; Velez, L.; Mouillot, D.
Titre Inferring food web structure from predator-prey body size relationships Type Article scientifique
Année (down) 2013 Publication Revue Abrégée Methods in Ecology and Evolution
Volume 4 Numéro 11 Pages 1083-1090
Mots-Clés Body size; Niche model; biodiversity; climate-change; community; constraints; ecological networks; ecology; ecosystems; food web; impacts; interaction strengths; metaweb; models; species richness
Résumé 1. Current global changes make it important to be able to predict which interactions will occur in the emerging ecosystems. Most of the current methods to infer the existence of interactions between two species require a good knowledge of their behaviour or a direct observation of interactions. In this paper, we overcome these limitations by developing a method, inspired from the niche model of food web structure, using the statistical relationship between predator and prey body size to infer the matrix of potential interactions among a pool of species. 2. The novelty of our approach is to infer, for any species of a given species pool, the three species-specific parameters of the niche model. The method applies to both local and metaweb scales. It allows one to evaluate the feeding interactions of a new species entering the community. 3. We find that this method gives robust predictions of the structure of food webs and that its efficiency is increased when the strength of the body-size relationship between predators and preys increases. 4. We finally illustrate the potential of the method to infer the metaweb structure of pelagic fishes of the Mediterranean sea under different global change scenarios.
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ISSN 2041-210x ISBN Médium
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Numéro d'Appel MARBEC @ isabelle.vidal-ayouba @ collection 674
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Auteur Jorgensen, C.; Peck, M.A.; Antognarelli, F.; Azzurro, E.; Burrows, M.T.; Cheung, W.W.L.; Cucco, A.; Holt, R.E.; Huebert, K.B.; Marras, S.; McKenzie, D.; Metcalfe, J.; Perez-Ruzafa, A.; Sinerchia, M.; Steffensen, J.F.; Teal, L.R.; Domenici, P.
Titre Conservation physiology of marine fishes: advancing the predictive capacity of models Type Article scientifique
Année (down) 2012 Publication Revue Abrégée Biol. Lett.
Volume 8 Numéro 6 Pages 900-903
Mots-Clés atlantic cod; body-mass; climate-change; climate effects; conservation physiology; gadus-morhua; metabolic scope; modelling; ocean; species distribution; temperature
Résumé At the end of May, 17 scientists involved in an EU COST Action on Conservation Physiology of Marine Fishes met in Oristano, Sardinia, to discuss how physiology can be better used in modelling tools to aid in management of marine ecosystems. Current modelling approaches incorporate physiology to different extents, ranging from no explicit consideration to detailed physiological mechanisms, and across scales from a single fish to global fishery resources. Biologists from different sub-disciplines are collaborating to rise to the challenge of projecting future changes in distribution and productivity, assessing risks for local populations, or predicting and mitigating the spread of invasive species.
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Volume de collection Numéro de collection Edition
ISSN 1744-9561 ISBN Médium
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Numéro d'Appel MARBEC @ alain.herve @ collection 1432
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