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Auteur |
Aubree, F.; David, P.; Jarne, P.; Loreau, M.; Mouquet, N.; Calcagno, V. |
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Titre |
How community adaptation affects biodiversity-ecosystem functioning relationships |
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Article scientifique |
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Année |
2020 |
Publication |
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Revue Abrégée |
Ecol. Lett. |
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Volume |
23 |
Numéro |
8 |
Pages |
1263-1275 |
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Mots-Clés |
stability; competition; species richness; species interactions; diversity; selection; consequences; species traits; evolution; productivity; food webs; Adaptive dynamics; eco-evolutionary dynamics; invasion; niche differentiation |
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Résumé |
Evidence is growing that evolutionary dynamics can impact biodiversity-ecosystem functioning (BEF) relationships. However the nature of such impacts remains poorly understood. Here we use a modelling approach to compare random communities, with no trait evolutionary fine-tuning, and co-adapted communities, where traits have co-evolved, in terms of emerging biodiversity-productivity, biodiversity-stability and biodiversity-invasion relationships. Community adaptation impacted most BEF relationships, sometimes inverting the slope of the relationship compared to random communities. Biodiversity-productivity relationships were generally less positive among co-adapted communities, with reduced contribution of sampling effects. The effect of community-adaptation, though modest regarding invasion resistance, was striking regarding invasion tolerance: co-adapted communities could remain very tolerant to invasions even at high diversity. BEF relationships are thus contingent on the history of ecosystems and their degree of community adaptation. Short-term experiments and observations following recent changes may not be safely extrapolated into the future, once eco-evolutionary feedbacks have taken place. |
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1461-023x |
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Numéro d'Appel |
MARBEC @ isabelle.vidal-ayouba @ |
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2906 |
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Auteur |
Campbell, S.J.; Darling, E.S.; Pardede, S.; Ahmadia, G.; Mangubhai, S.; Amkieltiela; Estradivari; Maire, E. |
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Titre |
Fishing restrictions and remoteness deliver conservation outcomes for Indonesia's coral reef fisheries |
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Article scientifique |
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Année |
2020 |
Publication |
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Revue Abrégée |
Conserv. Lett. |
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Numéro |
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Pages |
e12698 |
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Mots-Clés |
data-poor fisheries; dynamics; food webs; gear restrictions; management; marine protected areas; small-scale fisheries; South East Asia; targets |
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Résumé |
Coral reef fisheries depend on reef fish biomass to support ecosystem functioning and sustainable fisheries. Here, we evaluated coral reefs across 4,000 km of the Indonesian archipelago to reveal a large gradient of biomass, from 17,000 kg/ha. Trophic pyramids characterized by planktivore dominance emerged at high biomass, suggesting the importance of pelagic pathways for reef productivity. Total biomass and the biomass of most trophic groups were higher within gear restricted and no-take management, but the greatest biomass was found on unmanaged remote reefs. Within marine protected areas (MPAs), 41.6% and 43.6% of gear restricted and no-take zones, respectively, met a global biomass target of 500 kg/ha, compared with 71.8% of remote sites. To improve conservation outcomes for Indonesia's biodiverse and economically important coral reef fisheries, our results suggest to: (1) strengthen management within Indonesia's existing MPAs and (2) precautionarily manage remote reefs with high biomass. |
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ISSN |
1755-263x |
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Notes |
WOS:000510789900001 |
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MARBEC @ isabelle.vidal-ayouba @ |
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2733 |
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Auteur |
Massol, F.; Altermatt, F.; Gounand, I.; Gravel, D.; Leibold, M.A.; Mouquet, N. |
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Titre |
How life-history traits affect ecosystem properties: effects of dispersal in meta-ecosystems |
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Article scientifique |
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Année |
2017 |
Publication |
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Revue Abrégée |
Oikos |
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Volume |
126 |
Numéro |
4 |
Pages |
532-546 |
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Mots-Clés |
colonization trade-off; ecological stoichiometry; interaction strengths; neutral metacommunities; pond metacommunities; predator-prey interactions; source-sink metacommunities; species-diversity; terrestrial food webs; theoretical framework |
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Résumé |
The concept of life-history traits and the study of these traits are the hallmark of population biology. Acknowledging their variability and evolution has allowed us to understand how species adapt in response to their environment. The same traits are also involved in how species alter ecosystems and shape their dynamics and functioning. Some theories, such as the metabolic theory of ecology, ecological stoichiometry or pace-of-life theory, already recognize this junction, but only do so in an implicitly non-spatial context. Meanwhile, for a decade now, it has been argued that ecosystem properties have to be understood at a larger scale using meta-ecosystem theory because source-sink dynamics, community assembly and ecosystem stability are all modified by spatial structure. Here, we argue that some ecosystem properties can be linked to a single life-history trait, dispersal, i.e. the tendency of organisms to live, compete and reproduce away from their birth place. By articulating recent theoretical and empirical studies linking ecosystem functioning and dynamics to species dispersal, we aim to highlight both the known connections between life-history traits and ecosystem properties and the unknown areas, which deserve further empirical and theoretical developments. |
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English |
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ISSN |
0030-1299 |
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Numéro d'Appel |
MARBEC @ alain.herve @ |
collection |
2120 |
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Auteur |
Jacquet, C.; Mouillot, D.; Kulbicki, M.; Gravel, D. |
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Titre |
Extensions of Island Biogeography Theory predict the scaling of functional trait composition with habitat area and isolation |
Type |
Article scientifique |
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Année |
2017 |
Publication |
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Revue Abrégée |
Ecol. Lett. |
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Volume |
20 |
Numéro |
2 |
Pages |
135-146 |
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Mots-Clés |
Allometric theory; animal abundance; body-size; body-size distributions; complex food webs; coral-reef fishes; diversity; Ecology; evolution; Food web; global patterns; island biogeography; population-density; species richness; tropical reefs |
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Résumé |
The Theory of Island Biogeography (TIB) predicts how area and isolation influence species richness equilibrium on insular habitats. However, the TIB remains silent about functional trait composition and provides no information on the scaling of functional diversity with area, an observation that is now documented in many systems. To fill this gap, we develop a probabilistic approach to predict the distribution of a trait as a function of habitat area and isolation, extending the TIB beyond the traditional species-area relationship. We compare model predictions to the body-size distribution of piscivorous and herbivorous fishes found on tropical reefs worldwide. We find that small and isolated reefs have a higher proportion of large-sized species than large and connected reefs. We also find that knowledge of species body-size and trophic position improves the predictions of fish occupancy on tropical reefs, supporting both the allometric and trophic theory of island biogeography. The integration of functional ecology to island biogeography is broadly applicable to any functional traits and provides a general probabilistic approach to study the scaling of trait distribution with habitat area and isolation. |
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Auteur institutionnel |
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Lieu de Publication |
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Éditeur |
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English |
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Titre Original |
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Éditeur de collection |
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Titre de collection Abrégé |
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Edition |
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ISSN |
1461-023x |
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Notes |
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Numéro d'Appel |
MARBEC @ alain.herve @ |
collection |
2087 |
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| Lien permanent pour cet enregistrement |
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Auteur |
Cazelles, K.; Mouquet, N.; Mouillot, D.; Gravel, D. |
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Titre |
On the integration of biotic interaction and environmental constraints at the biogeographical scale |
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Article scientifique |
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Année |
2016 |
Publication |
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Revue Abrégée |
Ecography |
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Volume |
39 |
Numéro |
10 |
Pages |
921-931 |
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Mots-Clés |
biodiversity; climate-change; cooccurrence; distributions; ecological communities; evolutionary; food webs; networks; niche; species distribution models |
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Résumé |
Biogeography is primarily concerned with the spatial distribution of biodiversity, including performing scenarios in a changing environment. The efforts deployed to develop species distribution models have resulted in predictive tools, but have mostly remained correlative and have largely ignored biotic interactions. Here we build upon the theory of island biogeography as a first approximation to the assembly dynamics of local communities embedded within a metacommunity context. We include all types of interactions and introduce environmental constraints on colonization and extinction dynamics. We develop a probabilistic framework based on Markov chains and derive probabilities for the realization of species assemblages, rather than single species occurrences. We consider the expected distribution of species richness under different types of ecological interactions. We also illustrate the potential of our framework by studying the interplay between different ecological requirements, interactions and the distribution of biodiversity along an environmental gradient. Our framework supports the idea that the future research in biogeography requires a coherent integration of several ecological concepts into a single theory in order to perform conceptual and methodological innovations, such as the switch from single-species distribution to community distribution. |
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Auteur institutionnel |
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Lieu de Publication |
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English |
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Titre Original |
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Éditeur de collection |
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Titre de collection |
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Titre de collection Abrégé |
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Numéro de collection |
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Edition |
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ISSN |
0906-7590 |
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Médium |
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Notes |
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Approuvé |
pas de |
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Numéro d'Appel |
MARBEC @ alain.herve @ |
collection |
1683 |
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| Lien permanent pour cet enregistrement |
