Statistical analysis of trend monitoring data of heavy metals in flounder (Platichthys flesus) |
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| Institution: | 1. Faculty of Interdisciplinary Studies, Institute of Social Ecology, Alpen-Adria-Universität Klagenfurt, Schottenfeldgasse 29, 1070 Vienna, Austria;2. Dept. of Oceanography and Coastal Sciences, College of the Coast and Environment, Louisiana State University, Baton Rouge, LA 70803, USA;3. Aquatic Ecosystems Program, IRTA, Carretera Poble Nou, km 5.5, 43540 Sant Carles de la Rapita, Catalonia, Spain;1. Centre for Environmental Sciences, Faculty of Engineering and the Environment, University of Southampton, University Road, Highfield, Southampton, Hampshire SO17 1BJ, United Kingdom;2. Ocean and Earth Science, University of Southampton Waterfront Campus, National Oceanography Centre, European Way, Southampton, Hampshire SO14 3ZH, United Kingdom |
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| Abstract: | Six years trend monitoring data of mercury, cadmium, copper, lead, and zinc in flounder from the Sound and the Great Belt (Danish coastal waters) are statistically assessed using a series of multilinear, regressive models in terms of the measurements of metal levels and various biological parameters (e.g. length) for individual fish. With the exception of zinc in females from the Great Belt, each element exhibited no significant differences in relation to biological parameters from year to year at the two areas. Linearly increasing trends in the concentrations were found for cadmium without sex dependance from the two areas and for zinc and copper in females from the Sound and zinc in males from the Great Belt. Zinc is, in both areas, significantly correlated with the sex as is copper in the flounder from the Sound. The statistical models used have been found very useful and easy to interpret. |
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