PMID- 25912805 OWN - NLM STAT- MEDLINE DCOM- 20160226 LR - 20181202 IS - 1879-1298 (Electronic) IS - 0045-6535 (Linking) VI - 134 DP - 2015 Sep TI - Relative contribution of persistent organic pollutants to marine phytoplankton biomass dynamics in the North Sea and the Kattegat. PG - 76-83 LID - S0045-6535(15)00328-8 [pii] LID - 10.1016/j.chemosphere.2015.03.084 [doi] AB - In this paper, we use concentrations of persistent organic pollutants (POPs) and of chlorophyll a to infer POP-induced effects on marine primary production in the Kattegat and the North Sea between the 1990s and the 2000s. To do so, we modelled phytoplankton dynamics using four classical drivers (light and nutrient availability, temperature and zooplankton grazing) and tested whether extending this model with a POP-induced phytoplankton growth limitation term improved model fit to observed chlorophyll a concentrations. Including monitored concentrations of PCBs and pesticides did not lead to a better model fit, suggesting that POP-induced growth limitation of marine phytoplankton in the North Sea and the Kattegat is small compared to the limitations caused by the classical drivers. In an attempt to more fully represent the multitude of POPs in the marine environment, the monitored concentrations were multiplied with a factor 10 and 100. Under these two configurations, region-specific contributions of POPs in the phytoplankton growth limitation were found. The inferred contribution of POPs to phytoplankton growth limitation was ca. 1% in Belgian marine waters, but in the Kattegat POPs explained ca. 10% of the phytoplankton growth limitation. These results suggest that there are regional differences in the contribution of POPs to the phytoplankton growth limitation. CI - Copyright (c) 2015 Elsevier Ltd. All rights reserved. FAU - Everaert, Gert AU - Everaert G AD - Ghent University, Laboratory of Environmental Toxicology and Aquatic Ecology, J. Plateaustraat 22, B-9000 Ghent, Belgium. Electronic address: gert.everaert@ugent.be. FAU - De Laender, Frederik AU - De Laender F AD - Universite de Namur, Research Unit in Environmental and Evolutionary Biology, Laboratory of Environmental Ecosystem Ecology, Rue de Bruxelles 61, B-5000 Namur, Belgium. FAU - Goethals, Peter L M AU - Goethals PL AD - Ghent University, Laboratory of Environmental Toxicology and Aquatic Ecology, J. Plateaustraat 22, B-9000 Ghent, Belgium. FAU - Janssen, Colin R AU - Janssen CR AD - Ghent University, Laboratory of Environmental Toxicology and Aquatic Ecology, J. Plateaustraat 22, B-9000 Ghent, Belgium. LA - eng PT - Journal Article DEP - 20150424 PL - England TA - Chemosphere JT - Chemosphere JID - 0320657 RN - 0 (Pesticides) RN - 0 (Water Pollutants, Chemical) RN - 1406-65-1 (Chlorophyll) RN - 22309-13-3 (chlorophyll a') RN - DFC2HB4I0K (Polychlorinated Biphenyls) RN - YF5Q9EJC8Y (Chlorophyll A) SB - IM MH - Animals MH - Biomass MH - Chlorophyll/analogs & derivatives/analysis MH - Chlorophyll A MH - *Environmental Monitoring MH - North Sea MH - Pesticides/analysis/toxicity MH - Phytoplankton/growth & development/*physiology MH - Polychlorinated Biphenyls/analysis/toxicity MH - Temperature MH - Water Pollutants, Chemical/analysis/*toxicity MH - Zooplankton OTO - NOTNLM OT - Ecosystem model OT - Impact OT - Monitoring data OT - PCBs and pesticides OT - Primary production EDAT- 2015/04/29 06:00 MHDA- 2016/02/27 06:00 CRDT- 2015/04/28 06:00 PHST- 2014/10/23 00:00 [received] PHST- 2015/03/19 00:00 [revised] PHST- 2015/03/23 00:00 [accepted] PHST- 2015/04/28 06:00 [entrez] PHST- 2015/04/29 06:00 [pubmed] PHST- 2016/02/27 06:00 [medline] AID - S0045-6535(15)00328-8 [pii] AID - 10.1016/j.chemosphere.2015.03.084 [doi] PST - ppublish SO - Chemosphere. 2015 Sep;134:76-83. doi: 10.1016/j.chemosphere.2015.03.084. Epub 2015 Apr 24.