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<title lang=en>More coral, more fish? Contrasting snapshots from a remote Pacific atoll</title>
<creator>Beldade, Ricardo</creator>
<creator>Mills, Suzanne C</creator>
<creator>Claudet, Joachim</creator>
<creator>Côté, Isabelle M.</creator>
<contributor>Laboratoire d'Excellence CORAIL (LabEX CORAIL) ; Institut de Recherche pour le Développement (IRD) - Université des Antilles et de la Guyane (UAG) - École des hautes études en sciences sociales (EHESS) - École pratique des hautes études (EPHE) - Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) - Université de la Réunion (UR) - Université de la Polynésie Française (UPF) - Université de Nouvelle Calédonie - Institut d'écologie et environnement</contributor>
<contributor>Centre de recherches insulaires et observatoire de l'environnement (CRIOBE) ; École pratique des hautes études (EPHE) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Marine and Environmental Sciences Centre (MARE) ; Faculdade de Ciencias da Universidade de Lisboa</contributor>
<contributor>Earth to Ocean Research Group (SFU) ; Simon Fraser University (SFU.ca)</contributor>
<description>International audience</description>
<source>ISSN: 2167-8359</source>
<source>PeerJ</source>
<publisher>PeerJ</publisher>
<identifier>hal-01135589</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01135589</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01135589/document</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01135589/file/2015_02_26_more_coral_more_fish.pdf</identifier>
<source>https://hal.archives-ouvertes.fr/hal-01135589</source>
<source>PeerJ, PeerJ, 2015, pp.17. 〈10.7717/peerj.745〉</source>
<identifier>DOI : 10.7717/peerj.745</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.7717/peerj.745</relation>
<language>en</language>
<subject lang=en>Coral-fish relationship</subject>
<subject lang=en>Fish assemblages</subject>
<subject lang=en>Resilience</subject>
<subject lang=en>Functional relationship</subject>
<subject lang=en>Fish community structure</subject>
<subject lang=en>Coral cover</subject>
<subject>[SDV.BID] Life Sciences [q-bio]/Biodiversity</subject>
<subject>[SDE.BE] Environmental Sciences/Biodiversity and Ecology</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Coral reefs are in decline across the globe as a result of overexploitation, pollution, disease and, more recently, climate change. The impacts of changes in coral cover on associated fish communities can be difficult to predict because of the uneven dependence of reef fish species on corals for food, shelter or the three-dimensional structure they provide. We compared live coral cover, reef fish community metrics, and their associations in two surveys of the lagoon of the remote atoll of Mataiva (French Polynesia) carried out 31 years apart. In contrast to the general pattern of decreasing coral cover reported for many parts of the Indo-Pacific region, live coral cover increased 6–7 fold at Mataiva between 1981 and 2012, and fish density nearly doubled. The stable overall reef fish species richness belied a significant shift in community structure. There was little overlap in community composition across years, and fish assemblages in 2012 were more homogeneous in composition than they were in 1981. Changes in species abundance were not clearly related to species-specific reliance on corals. The strong positive relationships between live coral cover and fish diversity and abundance noted in 1981, when coral cover rarely exceeded 10%, were no longer present in 2012, when coral cover rarely fell below this value. The most parsimonious explanation for these contrasting relationships is that, over the combined range of coral cover observed in the 1981 and 2012 snapshots, there is a rapidly asymptotic relationship between coral and fish. Our results, and other data from the south and west Pacific, suggest that fish diversity and abundance might accumulate rapidly up to a threshold of approximately 10% live coral cover. Such a relationship would have implications for our expectations of resistance and recovery of reef fish communities facing an increasingly severe regime of coral reef disturbances.</description>
<rights>http://creativecommons.org/licenses/by/</rights>
<date>2015-01-29</date>
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