Spatial and temporal distribution of zooplankton related to the environmental conditions in the coral reef lagoon of New Caledonia,Southwest Pacific |
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| Institution: | 1. Department of Applied Ocean Physics and Engineering, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA;2. University of Naples “Parthenope”, Department of Science and Technology, Centro Direzionale – Isola C4, 80143 Napoli, Italy;3. Department of Earth & Environmental Sciences, Rutgers, The State University of New Jersey, 101 Warren Street, Smith Hall Room 140, Newark, NJ 07102, USA;1. Instituto de Biodiversidad y Biología Experimental y Aplicada, Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas IBBEA, UBA, CONICET, Intendente Güiraldes 2160 - Ciudad Universitaria, C1428EGA Buenos Aires, Argentina;2. Centro Austral de Investigaciones Científicas (CADIC-CONICET), Bernardo Houssay 200, V9410BFD Ushuaia, Tierra del Fuego, Argentina;3. Department of Functional and Evolutionary Biology, University of Vienna, Austria;4. GRC Geociències Marines. Departament de Dinàmica de la Terra i de l''Oceà, Universitat de Barcelona, s Barcelona, Spain;5. Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Biodiversidad y Biología Experimental, Intendente Güiraldes 2160 – Ciudad Universitaria, s Buenos Aires, Argentina |
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| Abstract: | The distribution of zooplanktonic prey of fish larvae was examined in three bays and two lagoonal stations in the Southwest lagoon of New Caledonia. Water column conditions were characterized by increasing chlorophyll a and particulate organic matter (POM) concentrations from the lagoon to the estuarine bay. The mean zooplankton settled volume and total density were significantly higher in the estuarine bay, reaching 35.1 mL m?3 and 3.5 × 105 individuals m?3, respectively. The total zooplankton density also progressively increased along the sampling period. The composition of assemblages differed between the lagoon and the bays, and was similar in the three bays. Wind speed, surface temperature, chlorophyll a and POM explained these variations, as revealed by a co-inertia analysis (COIA). The prey preferred by fish larvae, i.e. small crustaceans and small copepods, were more abundant in bays. Sheltered bays, most influenced by terrigenous inputs, are likely to provide the best feeding conditions. |
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