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dc.contributor.authorTraas TPen_US
dc.contributor.authorKramer PRGen_US
dc.contributor.authorAldenberg Ten_US
dc.contributor.authorHart MJ 'ten_US
dc.date.accessioned2007-03-09T17:18:16Z
dc.date.available2007-03-09T17:18:16Z
dc.date.issued1994-06-30en_US
dc.identifier719102032en_US
dc.identifier.urihttp://hdl.handle.net/10029/10415
dc.description.abstractCATS is an acronym for Contaminants in Aquatic and Terrestrial ecoSystems. CATS models have been developed for the prediction of fate and risks of toxicants. The aim of these models is to predict future risk levels of toxic substances for food webs. CATS-2 describes the behaviour of toxicants in sedimentation areas of main rivers in the Netherlands, such as Hollands Diep, Haringvliet and Ketelmeer. Bio-availability of toxicants to aquatic organisms is influenced by many biotic and abiotic characteristics of an ecosystem. Therefore, we integrated fate of toxicants in the abiotic environment with a food web model based on biomass cycling. Cycling of organic matter is the backbone of the model, acting as carrier for the toxicant. The food web consists of algae, zooplankton, bivalves, chironomid larvae, tubificid worms, whitefish, predatory fish, benthivorous fish, diving ducks and fish eating birds (Fig. 1). Cadmium and lindane (gamma-HCH) were selected to predict future risk levels in an example ecosystem, the Hollands Diep/Haringvliet area. Risk levels were calculated for two situations. First for the year 2000, with no additional clean-up of the river Rhine, and second for the year 2000 with additional clean-up according to the Rhine Action Programme. Model calculations predict that risks for both cadmium and lindane decrease, caused by the improvement of water quality in the River Rhine that feeds the area. The high cadmium load of the river Rhine in the past is responsible for high cadmium concentrations in the sediment. Even with additional clean up, sediment quality does not meet the Dutch quality objective of 2 mg/kg d.w. in the year 2000. Except for benthivorous fish, risks for the food web are low in the year 2000 indicating that in general the Rhine Action Plan is successful if its original emission-reduction goals can be achieved.
dc.format.extent3170000 bytesen_US
dc.format.extent3245250 bytes
dc.format.mimetypeapplication/pdf
dc.language.isonlen_US
dc.publisherRijksinstituut voor Volksgezondheid en Milieu RIVMen_US
dc.relation.ispartofseriesRIVM Rapport 719102032en_US
dc.relation.urlhttp://www.rivm.nl/bibliotheek/rapporten/719102032.htmlen_US
dc.subject.otherriversen
dc.subject.otherwaterflooren
dc.subject.otherriver sedimenten
dc.subject.othermodellingen
dc.subject.othercadmiumen
dc.subject.othermacen
dc.subject.othersimulationen
dc.subject.otherbioaccumulationen
dc.subject.otherfood chainsen
dc.subject.otherecosystemsen
dc.subject.otherrisksen
dc.subject.otherecotoxicologyen
dc.subject.otherscenarioen
dc.subject.otherlindaneen
dc.subject.otherlindaneen
dc.subject.otherriviernl
dc.subject.otherrivierslibnl
dc.subject.otherwaterbodemnl
dc.subject.othermodelnl
dc.subject.othercadmiumnl
dc.subject.othermacnl
dc.subject.othersimulatienl
dc.subject.otherbio-accumulatienl
dc.subject.othervoedselketennl
dc.subject.otherecosysteemnl
dc.subject.otherrisiconl
dc.subject.otherecotoxicologienl
dc.subject.otherscenarionl
dc.subject.otherlindaannl
dc.subject.otherlindaannl
dc.titleCATS-2: een model ter voorspelling van accumulatie van microverontreinigingen in sedimentatiegebieden van rivierenen_US
dc.title.alternative[CATS-2: a model to predict accumulation of contaminants in sediment areas.]en_US
dc.contributor.departmentLWDen_US
refterms.dateFOA2018-12-18T09:15:30Z
html.description.abstractCATS is an acronym for Contaminants in Aquatic and Terrestrial ecoSystems. CATS models have been developed for the prediction of fate and risks of toxicants. The aim of these models is to predict future risk levels of toxic substances for food webs. CATS-2 describes the behaviour of toxicants in sedimentation areas of main rivers in the Netherlands, such as Hollands Diep, Haringvliet and Ketelmeer. Bio-availability of toxicants to aquatic organisms is influenced by many biotic and abiotic characteristics of an ecosystem. Therefore, we integrated fate of toxicants in the abiotic environment with a food web model based on biomass cycling. Cycling of organic matter is the backbone of the model, acting as carrier for the toxicant. The food web consists of algae, zooplankton, bivalves, chironomid larvae, tubificid worms, whitefish, predatory fish, benthivorous fish, diving ducks and fish eating birds (Fig. 1). Cadmium and lindane (gamma-HCH) were selected to predict future risk levels in an example ecosystem, the Hollands Diep/Haringvliet area. Risk levels were calculated for two situations. First for the year 2000, with no additional clean-up of the river Rhine, and second for the year 2000 with additional clean-up according to the Rhine Action Programme. Model calculations predict that risks for both cadmium and lindane decrease, caused by the improvement of water quality in the River Rhine that feeds the area. The high cadmium load of the river Rhine in the past is responsible for high cadmium concentrations in the sediment. Even with additional clean up, sediment quality does not meet the Dutch quality objective of 2 mg/kg d.w. in the year 2000. Except for benthivorous fish, risks for the food web are low in the year 2000 indicating that in general the Rhine Action Plan is successful if its original emission-reduction goals can be achieved.


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