Response of estuarine phytoplankton to nutrient and spatio-temporal pattern of physico-chemical water quality parameters in Little Vermilion Bay,Louisiana |
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| Institution: | 1. Department of Civil Engineering, University of Louisiana at Lafayette, Lafayette, LA 70504, USA;2. School of Geosciences, University of Louisiana at Lafayette, Lafayette, LA 70504, USA;1. Universidad del Caribe, Complex System Simulation Laboratory, SM. 78, Mza. 1, Lote 1, Fracc. Tabachines, Cancún 77528, Mexico;2. Centro de Investigación Científica y de Educación Superior de Ensenada, km 107 Carretera Tijuana-Ensenada, Ensenada CP 22860, B.C., Mexico;1. Institute of Loess Plateau, Shanxi University, Taiyuan 030006, China;2. School of Life Science, Shanxi University, Taiyuan 030006, China;3. College of Resources Science and Technology, Beijing Normal University, Beijing 100875, China;4. Department of Life Science and Technology, Changzhi University, Changzhi 046011, China;1. Institute of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan;2. KERMIT, Department of Mathematical Modelling, Statistics and Bioinformatics, Ghent University, Coupure links 653, 9000 Ghent, Belgium;1. Department of Environmental Geochemical Cycle Research, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Kanazawa-ku, Yokohama 236-0001, Japan;2. Faculty of Agriculture and Agricultural Science Programme, Kochi University, Nankoku-shi, Kochi 783-8502, Japan;3. United Graduate School of Agricultural Sciences, Ehime University, Matsuyama 790-8566, Japan;4. Research Institute for Humanity and Nature, Motoyama, Kamigamo, Kita-ku, Kyoto 603-8047, Japan;5. Graduate School of Human and Environmental Studies, Kyoto University, Yoshida Nihonmatsu-cho, Sakyo-ku, Kyoto 606-8501, Japan |
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| Abstract: | We studied the response pattern of phytoplankton to nutrient concentrations in Little Vermilion Bay, Louisiana in July and November 2013. It is important to understand the response of phytoplankton to nutrient concentrations in order to find impacts of eutrophication and improve the water quality for survival of fish and other aquatic life. Total Nitrogen and Total Phosphorus were measured in Little Vermillion Bay at several sampling locations along with some other water quality parameters and response of phytoplankton biomass was evaluated. The spatial–temporal pattern of water quality parameters in the study area was assessed using a spatial interpolation method. Phytoplankton biomass was positively correlated with nutrient enrichment in Little Vermillion Bay. Chlorophyll a concentrations were found to be strongly dependent on Total Nitrogen and Total Phosphorus in the water column. Nutrient concentration in the water column has a strong control over phytoplankton biomass and primary production. The TN:TP ratio was evaluated to establish the limiting nutrient for eutrophication in the study area. Both nitrogen and phosphorus were found to have strong relationships with phytoplankton growth and a growth limiting nutrient was not established for Little Vermilion Bay. |
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