Environmental forcing on jellyfish communities in a small temperate estuary |
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| Affiliation: | 1. Graduate School of Marine Sciences, Tokyo University of Marine Science and Technology, Tokyo, Japan;2. Department of Ocean Sciences, Tokyo University of Marine Science and Technology, Tokyo, Japan;3. Faculty of Life Sciences, Toyo University, Oura-gun, Japan;4. Biomedical Research Institute, National Institute of Advanced and Industrial Science and Technology, Tsukuba, Japan;1. Department of Natural and Applied Sciences, Bentley University, Waltham, MA 02452, United States of America;2. Louisiana Universities Marine Consortium, 8156 Highway 56, Chauvin, LA 70344, United States of America;3. Center for Energy, Environment, and Sustainability, Department of Biology, Wake Forest University, Winston-Salem, NC 27109, United States of America;1. ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, QLD 4811, Australia;2. College of Marine & Environmental Sciences, James Cook University, Townsville, QLD 4811, Australia;3. TropWATER, James Cook University, Townsville, QLD 4811, Australia;1. Institute for Agricultural and Fisheries Research (ILVO), Animal Sciences Unit, Aquatic Environment and Quality, Bio-environmental Research Group, Ankerstraat 1, 8400 Oostende, Belgium;2. Ghent University (UGent), Faculty of Sciences, Biology Department, Marine Biology Section, Sterre Campus, Krijgslaan 281, S8, 9000 Gent, Belgium |
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| Abstract: | The impact of biological, hydrodynamic and large scale climatic variables on the jellyfish community of Mondego estuary was evaluated from 2003 to 2010. Plankton samples were collected at the downstream part of the estuary. Siphonophora Muggiaea atlantica and Diphyes spp. were the main jellyfish species. Jellyfish density was generally higher in summer and since 2005 densities had increased. Summer community analysis pointed out Acartia clausi, estuarine temperature and salinity as the main driven forces for the assemblage's structure. Also, Chl a, estuarine salinity, runoff and SST were identified as the major environmental factors influencing the siphonophores summer interannual variability. Temperature influenced directly and indirectly the community and fluctuation of jellyfish blooms in the Mondego estuary. This study represents a contribution to a better knowledge of the gelatinous plankton communities in small temperate estuaries. |
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