Record nummer 1935863
Titel artikel Modelling long-term ecotoxicological effects on an algal population under dynamic nutrient stress
Auteur(s) Bontje, D. ; Kooi, B.W. ; Liebig, M. ; Kooijman, S.A.L.M.
Tijdschrifttitel Water research : the journal of the International Association on Water Quality
Deel(Jaar)Nummer 43(2009)13
Paginering 3292 - 3300
Online full text
Trefwoorden (cab) micro-organismen / algen / groei / biomassa / toxische stoffen / concentratie / modellen / voedingsstoffenbeschikbaarheid / kringlopen / aquatische ecologie
Rubrieken Aquatische ecologie
Publicatie type Artikel
Taal Engels
Toelichting (Engels) We study the effects of toxicants on the functioning of phototrophic unicellular organism (an algae) in a simple aquatic microcosm by applying a parameter-sparse model. The model allows us to study the interaction between ecological and toxicological effects. Nutrient stress and toxicant stress, together or alone, can cause extinction of the algal population. The modelled algae consume dissolved inorganic nitrogen (DIN) under surplus light and use it for growth and maintenance. Dead algal biomass is mineralized by bacterial activity, leading to nutrient recycling. The ecological model is coupled with a toxicity-module that describes the dependency of the algal growth and death rate on the toxicant concentration.
Betrokken instanties Vrije Universiteit Amsterdam, Vakgroep Oecologie en Oecotoxicologie
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