Deep-sea benthic communities in the largest oceanic desert are structured by the presence of polymetallic crust
| Autor: | Juliette Delavenne, Philippe Maestrati, Pierre Lozouet, Louise Keszler, Sarah Samadi, Magalie Castelin |
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| Přispěvatelé: | Institut de Systématique, Evolution, Biodiversité (ISYEB ), Muséum national d'Histoire naturelle (MNHN)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Fisheries and Oceans Canada, Fisheries and Oceans Canada (DFO), Muséum national d'Histoire naturelle (MNHN), Systématique, adaptation, évolution (SAE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Muséum national d'Histoire naturelle (MNHN)-École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA), Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA), Centre d'Ecologie et des Sciences de la COnservation (CESCO), Muséum national d'Histoire naturelle (MNHN)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Geologic Sediments Range (biology) Oceans and Seas Seamount lcsh:Medicine Environment [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics Phylogenetics and taxonomy Deep sea Article 03 medical and health sciences 0302 clinical medicine Abundance (ecology) Crustacea Animals 14. Life underwater lcsh:Science Endemism ComputingMilieux_MISCELLANEOUS Ecosystem Invertebrate geography Multidisciplinary geography.geographical_feature_category Ecology lcsh:R Biodiversity 15. Life on land Biooceanography 030104 developmental biology Habitat Benthic zone Metals Mollusca lcsh:Q 030217 neurology & neurosurgery |
| Zdroj: | Scientific Reports Scientific Reports (2045-2322) (Springer Science and Business Media LLC), 2019-05, Vol. 9, N. 1, P. 6977 (11 p.) Scientific Reports, Nature Publishing Group, 2019, 9 (1), ⟨10.1038/s41598-019-43325-0⟩ Scientific Reports, 2019, 9 (1), ⟨10.1038/s41598-019-43325-0⟩ Scientific Reports, Vol 9, Iss 1, Pp 1-11 (2019) |
| ISSN: | 2045-2322 |
| Popis: | Based on the specimens collected during three deep-sea cruises, and deposited at the Muséum National d’Histoire Naturelle (MNHN) in Paris, we analysed the diversity of benthic communities within the EEZ of French Polynesia. The literature and the MNHN database allowed us to inventory 471 species of invertebrates, among which 169 were newly described. We mainly found data for Mollusca, Crustacea, Brachiopoda and Crinoidea. We also found samples from other taxa, which still remain unidentified within the collections of the MNHN. Although this inventory is incomplete, we demonstrate that the deep waters of French Polynesia host unique benthic communities and endemic species. Using diversity and multivariate analyses, we show that the deep-sea benthic communities are structured by depth, habitats, geography and also by the presence of polymetallic crust. Furthermore, by focusing on the molluscs of the central area of French Polynesia, we show that the spectrum of shell size differs among deep-sea habitats. Specifically, shells tend to be smaller on encrusted seamounts than on island slopes. Together with the size range of organisms, low abundance, rarity and endemism designate these habitats as sensitive. These results should thus be taken into account in the evaluation of the expected impact of mining activities on biological communities. |
| Databáze: | OpenAIRE |
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