Habitat use of a multispecific seagrass meadow by green turtles Chelonia mydas at Mayotte island
| Autor: | Henri Grizel, Katia Ballorain, Jean-Yves Georges, Manfred R. Enstipp, Stéphane Ciccione, Jerome Bourjea |
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| Přispěvatelé: | Département Ecologie, Physiologie et Ethologie (DEPE-IPHC), Institut Pluridisciplinaire Hubert Curien (IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Kélonia - Observatoire des tortues marines, Institut Français de Recherche pour l'Exploitation de la Mer, Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Regional Council of Reunion Island, European Social Fund, Kelonia, ANR-07-BLAN-0220,ESTVOI,ECOLOGIE SPATIALE DES TORTUES VERTES DE L'OCEAN INDIEN(2007), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: |
0106 biological sciences
Herbivore Ecology biology 010604 marine biology & hydrobiology Syringodium isoetifolium Aquatic Science biology.organism_classification 010603 evolutionary biology 01 natural sciences Fishery Indian ocean Seagrass Habitat Halodule uninervis [SDE]Environmental Sciences 14. Life underwater Cheloniidae Ecology Evolution Behavior and Systematics |
| Zdroj: | Marine Biology Marine Biology, Springer Verlag, 2010, 157 (2), pp.2581-2590. ⟨10.1007/s00227-010-1520-7⟩ Marine Biology (0025-3162) (Springer), 2010-12, Vol. 157, N. 12, P. 2581-2590 |
| ISSN: | 0025-3162 1432-1793 |
| DOI: | 10.1007/s00227-010-1520-7⟩ |
| Popis: | International audience; We investigated the habitat use in green turtles exploiting a 13-ha multispecific seagrass meadow at Mayotte Island, south-western Indian Ocean. A phytoecological survey shows the occurrence of eight seagrass species, dominated by Halodule uninervis and Syringodium isoetifolium, distributed according to four distinct seagrass communities along the depth gradient. Direct underwater censuses show that green turtles occurred all over the meadow. Yet when community relative surface area was taken into account green turtles preferentially frequented the most seaward, biomass-richer S. isoetifolium-dominated community, suggesting that green turtles compensate for their intrinsically nutrient-poor herbivorous diet. Additionally, smaller (\80 cm standard curved carapace length, SCCL) individuals also preferentially occurred in the most shoreward H. univervis-dominated community where no larger ([80 cm SCCL) individuals were sighted, suggesting habitat use is indicative of diet selection and may reflect size-specific food requirements and physiology |
| Databáze: | OpenAIRE |
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