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<title lang=en>Rare species contribute disproportionately to the functional structure of species assemblages</title>
<creator>Leitão, Rafael P.</creator>
<creator>Zuanon, Jansen</creator>
<creator>Villéger, Sébastien</creator>
<creator>Williams, Stephen E.</creator>
<creator>Baraloto, Christopher</creator>
<creator>FORTUNEL, Claire</creator>
<creator>Mendonça, Fernando P.</creator>
<creator>Mouillot, David</creator>
<contributor>PPG Biol. Agua Doce & Pesca Interior ; Instituto Nacional de Pesquisas da Amazônia</contributor>
<contributor>Coordenacao Biodiversidade ; Instituto Nacional de Pesquisas da Amazônia</contributor>
<contributor>MARine Biodiversity Exploitation and Conservation (UMR MARBEC) ; Institut de Recherche pour le Développement (IRD) - Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Ct Trop Biodiversity & climate change ; James Cook University</contributor>
<contributor>Ecologie des forêts de Guyane (ECOFOG) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD) - Institut National de la Recherche Agronomique (INRA) - Université des Antilles et de la Guyane (UAG) - AgroParisTech - Université de Guyane (UG) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Depart. Biol. College PK ; University of Maryland</contributor>
<contributor>Instituto Federal de Educaçao, Ciencia e Tecnologia do Rio Grande de Sul</contributor>
<contributor>Australian Res Council Ctr Excellence Coral Reef ; James Cook University</contributor>
<source>ISSN: 0962-8452</source>
<source>Proceedings of the Royal Society B: Biological Sciences</source>
<publisher>Royal Society, The</publisher>
<identifier>hal-01532639</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01532639</identifier>
<source>https://hal.archives-ouvertes.fr/hal-01532639</source>
<source>Proceedings of the Royal Society B: Biological Sciences, Royal Society, The, 2016, 283 (1828), 〈10.1098/rspb.2016.0084〉</source>
<identifier>DOI : 10.1098/rspb.2016.0084</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1098/rspb.2016.0084</relation>
<identifier>PRODINRA : 384617</identifier>
<language>en</language>
<subject lang=en>tropical biodiversity</subject>
<subject lang=en>extinction</subject>
<subject lang=en>rarity index</subject>
<subject lang=en>functional diversity</subject>
<subject lang=en>null models</subject>
<subject lang=en>nature conservation</subject>
<subject lang=fr>biodiversité</subject>
<subject lang=fr>région tropicale</subject>
<subject lang=fr>conservation</subject>
<subject lang=fr>diversité fonctionnelle</subject>
<subject>[SDV] Life Sciences [q-bio]</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>There is broad consensus that the diversity of functional traits within species assemblages drives several ecological processes. It is also widely recognized that rare species are the first to become extinct following human-induced disturbances. Surprisingly, however, the functional importance of rare species is still poorly understood, particularly in tropical species-rich assemblages where the majority of species are rare, and the rate of species extinction can be high. Here, we investigated the consequences of local and regional extinctions on the functional structure of species assemblages. We used three extensive datasets (stream fish from the Brazilian Amazon, rainforest trees from French Guiana, and birds from the Australian Wet Tropics) and built an integrative measure of species rarity versus commonness, combining local abundance, geographical range, and habitat breadth. Using different scenarios of species loss, we found a disproportionate impact of rare species extinction for the three groups, with significant reductions in levels of functional richness, specialization, and originality of assemblages, which may severely undermine the integrity of ecological processes. The whole breadth of functional abilities within species assemblages, which is disproportionately supported by rare species, is certainly critical in maintaining ecosystems particularly under the ongoing rapid environmental transitions.</description>
<date>2016</date>
</dc>
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