caa a22 4500 397551045 CHVBK 20180308164750.0 cr unu---uuuuu 161202e199612 xx s 000 0 eng 10.1006/jmsc.1996.0126 doi (NATIONALLICENCE)oxford-10.1006/jmsc.1996.0126 Pedersen Britta National Environmental Research Institute, PO Box 358, DK-4000, Roskilde, Denmark Metal concentration in biota in the North sea: changes and causes [Elektronische Daten] [Britta Pedersen] The article reviews available information on time trends in metal concentration in biota from monitoring studies in the North Sea. Data collected in Danish marine waters are presented as examples of changes in metal concentrations since 1975. Causes of trends and problems associated with the use of measurements in biota when assessing time trends in metals are discussed. Although emissions of many metals have apparently been reduced during the last 15 years due to different regulations, it has only been possible to detect any significant changes in the environment in very few of the more contaminated coastal areas. It is argued that this might well be caused by the lack of understanding of the effects of biological covariables on metal concentrations which may explain part of the variance observed in samples, and also of the physical and biogeochemical processes, which may cause changes in the bioavailability of metals and levels of contamination. © 1996 International council for the Exploration of the Sea Short Communication nationallicence biota nationallicence monitoring nationallicence North Sea nationallicence trace metals nationallicence trends nationallicence ICES Journal of Marine Science Oxford University Press 53/6(1996-12), 1008-1013 1054-3139 53:6<1008 1996 53 icesjms https://doi.org/10.1006/jmsc.1996.0126 text/html Onlinezugriff via DOI 1 other jats NATIONALLICENCE 856 40 https://doi.org/10.1006/jmsc.1996.0126 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Pedersen Britta National Environmental Research Institute, PO Box 358, DK-4000, Roskilde, Denmark NATIONALLICENCE 773 0- ICES Journal of Marine Science Oxford University Press 53/6(1996-12), 1008-1013 1054-3139 53:6<1008 1996 53 icesjms Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford