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Open Access item Bifurcation Analysis of a Marine Food Chain

Authors:Souza Bacelar, Flora
Hernández-García, Emilio
Issue Date:9-Sep-2008
Publisher:Universidad de las Islas Baleares
CSIC-UIB - Instituto de Física Interdisciplinar y Sistemas Complejos (IFISIC)
Abstract:Bifurcation theory and dynamical systems techniques were used to analyze the joint effect of contaminants and nutrient loading on population dynamics of marine food chains. Contaminant toxicity is assumed to alter mortality of some species with a sigmoidal dose-response relationship. A generic effect of pollutants is to delay transitions to complex dynamical states towards higher nutrient load values, but more counterintuitive consequences arising from indirect effects are described. In particular, the top predator seems to be the species more affected by pollutants, even when contaminant is toxic only to lower trophic levels
Description:Master Thesis
Appears in Collections:(IFISC) Tesis

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