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Auteur (up) Dias, M.S.; Oberdorff, T.; Hugueny, B.; Leprieur, F.; Jezequel, C.; Cornu, J.F.; Brosse, S.; Grenouillet, G.; Tedesco, P.A.
Titre Global imprint of historical connectivity on freshwater fish biodiversity Type Article scientifique
Année 2014 Publication Revue Abrégée Ecology Letters
Volume 17 Numéro 9 Pages 1130-1140
Mots-Clés Alpha diversity; Beta diversity; Biogeography; Quaternary climate changes; africa; climate changes; contemporary; diversity patterns; endemism; evolution; freshwater fish; global; history; north-america; richness; river systems; scale; sea-level changes; species turnover; species-richness
Résumé The relative importance of contemporary and historical processes is central for understanding biodiversity patterns. While several studies show that past conditions can partly explain the current biodiversity patterns, the role of history remains elusive. We reconstructed palaeo-drainage basins under lower sea level conditions (Last Glacial Maximum) to test whether the historical connectivity between basins left an imprint on the global patterns of freshwater fish biodiversity. After controlling for contemporary and past environmental conditions, we found that palaeo-connected basins displayed greater species richness but lower levels of endemism and beta diversity than did palaeo-disconnected basins. Palaeo-connected basins exhibited shallower distance decay of compositional similarity, suggesting that palaeo-river connections favoured the exchange of fish species. Finally, we found that a longer period of palaeo-connection resulted in lower levels of beta diversity. These findings reveal the first unambiguous results of the role played by history in explaining the global contemporary patterns of biodiversity.
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ISSN 1461-023x ISBN Médium
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Numéro d'Appel MARBEC @ isabelle.vidal-ayouba @ collection 631
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Auteur (up) Leprieur, F.; Oikonomou, A.
Titre The need for richness-independent measures of turnover when delineating biogeographical regions Type Article scientifique
Année 2014 Publication Revue Abrégée Journal of Biogeography
Volume 41 Numéro 2 Pages 417-420
Mots-Clés Beta diversity; bioregionalization; clustering; compositional dissimilarity; freshwater fishes; species richness; species turnover; β-3 index; βsim index
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Volume de collection Numéro de collection Edition
ISSN 1365-2699 ISBN Médium
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Numéro d'Appel MARBEC @ isabelle.vidal-ayouba @ collection 896
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Auteur (up) Monnet, A.C.; Jiguet, F.; Meynard, C.N.; Mouillot, D.; Mouquet, N.; Thuiller, W.; Devictor, V.
Titre Asynchrony of taxonomic, functional and phylogenetic diversity in birds Type Article scientifique
Année 2014 Publication Revue Abrégée Global Ecology and Biogeography
Volume 23 Numéro 7 Pages 780-788
Mots-Clés Beta diversity; Rao; assemblages; beta components; biological diversity; breeding bird survey; climate-change; communities; conservation; evolutionary; functional traits; homogenization; indexes; patterns; species turnover; temporal dynamics
Résumé Aim We assessed the temporal trends of taxonomic, functional and phylogenetic diversities in the French avifauna over the last two decades. Additionally, we investigated whether and how this multifaceted approach to biodiversity dynamics can reveal an increasing similarity of local assemblages in terms of species, traits and/or lineages. Location France. Methods We analysed a large-scale dataset that recorded annual changes in the abundance of 116 breeding birds in France between 1989 and 2012. We decomposed and analysed the spatio-temporal dynamics of taxonomic, phylogenetic and functional diversities and each of their -, – and -components. We also calculated the trend in the mean specialization of bird communities to track the relative success of specialist versus generalist species within communities during the same period. Results We found large variation within and among the temporal trends of each biodiversity facet. On average, we found a marked increase in species and phylogenetic diversity over the period considered, but no particular trend was found for functional diversity. Conversely, changes in -diversities for the three facets were characterized by independent and nonlinear trends. We also found a general increase in the local occurrence and abundance of generalist species within local communities. Main conclusions These results highlight a relative asynchrony of the different biodiversity facets occurring at large spatial scales. We show why a multifaceted approach to biodiversity dynamics is needed to better describe and understand changes in community composition in macroecology and conservation biogeography.
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Numéro d'Appel MARBEC @ isabelle.vidal-ayouba @ collection 455
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Auteur (up) Patino, J.; Weigelt, P.; Guilhaumon, F.; Kreft, H.; Triantis, K.A.; Naranjo-Cigala, A.; Solymos, P.; Vanderpoorten, A.
Titre Differences in species-area relationships among the major lineages of land plants: a macroecological perspective Type Article scientifique
Année 2014 Publication Revue Abrégée Global Ecology and Biogeography
Volume 23 Numéro 11 Pages 1275-1283
Mots-Clés biology; bryophytes; Carrying capacity; cloning; data; Dispersal ability; et-al.; geographical; isolation; long-distance dispersal; maximum-entropy; pteridophytes; range sizes; richness; scale; species-area relationship; species richness; species turnover; spermatophytes; spore-producing plants; universality
Résumé AimAlthough the increase in species richness with increasing area is considered one of the few laws in ecology, the role of environmental and taxon-specific features in shaping species-area relationships (SARs) remains controversial. Using 421 land-plant floras covering continents, continental islands and oceanic islands, we investigate whether variations in SAR parameters can be interpreted in terms of differences among lineages in speciation mode and dispersal capacities (TAXON), or of geological history and geographical isolation between continents and islands (GEO). LocationGlobal. MethodsLinear mixed-effects models describing variation in SARs, depending on the factors GEO and TAXON and controlling for differences between realms (REALM) and biomes (BIOME). ResultsThe best random-effect structure included both random slopes and random intercepts for GEO, TAXON, REALM and BIOME. This accounted for 77% of the total variation in species richness, substantially more than the 27% statistically explained by the model with fixed effects only (i.e. the simple SAR). The slopes of the SARs were higher for oceanic islands than for continental islands and continents, and higher in spermatophytes than in pteridophytes and bryophytes. The intercepts largely exhibited the reverse trend. TAXON was included in best-fit models restricted to oceanic and continental islands, but not continents. Analysing each plant lineage separately, the intercept of GEO was only included in the random structure of spermatophytes. Main conclusionsSAR parameters varied considerably depending on geological history and taxon-specific traits. Such differences in SARs among land plants challenge the neutral theory that the accumulation of species richness on islands is controlled exclusively by extrinsic factors. Taxon-specific differences in SARs were, however, confounded by interactions with geological history and geographical isolation. This highlights the importance of applying integrative frameworks that take both environmental context and taxonomic idiosyncrasies into account in SAR analyses.
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Notes <p>ISI Document Delivery No.: AR6ZU<br/>Times Cited: 2<br/>Cited Reference Count: 59<br/>Patino, Jairo Weigelt, Patrick Guilhaumon, Francois Kreft, Holger Triantis, Kostas A. Naranjo-Cigala, Agustin Solymos, Peter Vanderpoorten, Alain<br/>Belgian Funds for Scientific Research (FNRS) [1.5036.11, 2.4557.11]; University of Liege [C 11/32]; European Union [ES-TAF-2553, SE-TAF-1361, GB-TAF-1801]; DFG Initiative of Excellence via the Free Floater programme at the University of Gottingen<br/>Many thanks are given to Richard Field, David Currie, Silvia C. Aranda, Joaquin Hortal and three referees for their constructive comments on the manuscript. We are particularly grateful to S. Robbert Gradstein for providing unpublished data from Hawaii, Juana M. Gonzalez-Mancebo for making available unpublished data for the Canarian islets, and Martin Turjak for drawings. J.P and A.V. gratefully acknowledge financial support from the Belgian Funds for Scientific Research (FNRS) (grants 1.5036.11 and 2.4557.11) and the University of Liege (grant C 11/32); J.P. also acknowledges support from the European Union's Seventh Framework Programme (FP7/2007-2013) under grant agreement ES-TAF-2553, SE-TAF-1361 and GB-TAF-1801 (SYNTHESYS); P.W and H.K. were funded by the DFG Initiative of Excellence via the Free Floater programme at the University of Gottingen.<br/>Wiley-blackwell<br/>Hoboken</p> Approuvé pas de
Numéro d'Appel MARBEC @ alain.herve @ collection 1171
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