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Comparison of different toxic effect sub-models in ecosystem modelling used for ecological effect assessments and water quality standard setting
De Laender, F.; De Schamphelaere, K.A.C.; Vanrolleghem, P.A.; Janssen, C.R. (2008). Comparison of different toxic effect sub-models in ecosystem modelling used for ecological effect assessments and water quality standard setting. Ecotoxicol. Environ. Saf. 69(1): 13-23. dx.doi.org/10.1016/j.ecoenv.2007.08.020
In: Ecotoxicology and Environmental Safety. Academic Press/Elsevier: Amsterdam, Netherlands etc. ISSN 0147-6513; e-ISSN 1090-2414, meer
Peer reviewed article  

Beschikbaar in  Auteurs 
    VLIZ: Open Repository 280293 [ OMA ]

Trefwoorden
    Aquatic communities > Plankton > Phytoplankton
    Ecology
    Ecology > Synecology
    Ecosystems
    Environmental assessment
    Modelling
    Monitoring > Environmental monitoring
    Population characteristics > Biomass
    Population functions > Mortality
    Properties > Biological properties > Toxicity
    Toxicology > Ecotoxicology
    Water quality
    Marien/Kust; Zoet water
Author keywords
    ecological effect assessment; ecosystem modeling; toxic effect sub-model

Auteurs  Top 
  • De Laender, F., meer
  • De Schamphelaere, K.A.C., meer
  • Vanrolleghem, P.A., meer
  • Janssen, C.R., meer

Abstract
    Ecosystem models, combining a food web model with a toxic effect sub-model, have been proposed to incorporate ecological interactions in ecological effect assessments. Toxic effect sub-models in different studies tend to differ in (1) the used single-species toxicity data, (2) the effects they consider, (3) the concentration-effect function used. In this paper, we constructed four ecosystem models, each with a different toxic effect sub-model, and tested their capacity to predict biomass changes, and no observed effect concentrations (NOECs) established in an experimental microcosm. For most populations, these predictions depended heavily on the type of ecosystem model. The ecosystem model with a toxic effect sub-model incorporating mortality effects using a logistic concentration-effect function made accurate predictions for most populations. Additional incorporation of sub-lethal effects did not result in better predictions. Ecosystem models using linear concentration-effect functions predict biomass decreases at concentrations that are four times lower than the observed NOECs.

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