PMID: 16519323Mar 8, 2006Paper

From organisms to populations: modeling aquatic toxicity data across two levels of biological organization

Environmental Toxicology and Chemistry
Sandy Raimondo, Charles L McKenney

Abstract

A critical step in estimating the ecological effects of a toxicant is extrapolating organism-level response data across higher levels of biological organization. In the present study, the organism-to-population link is made for the mysid, Americamysis bahia, exposed to a range of concentrations of six toxicants. Organism-level responses observed were categorized as no effect, delayed reproduction, reduced overall reproduction, or both reduced overall reproduction and survival. Population multiplication rates of each toxicant concentration were obtained from matrix models developed from organism-level endpoints and placed into the four categories of organism-level responses. Rates within each category were compared with growth rates modeled for control populations. Population multiplication rates were significantly less than control growth rates only for concentrations at which overall reproduction and both reproduction and survival were significantly less than the control values on the organism level. Decomposition analysis of the significant population-level effects identified reduced reproduction as the primary contributor to a reduced population multiplication rate at all sublethal concentrations and most lethal concentratio...Continue Reading

Citations

Jul 28, 2007·Archives of Environmental Contamination and Toxicology·Erin B McGregorM L Hanson
Dec 3, 2014·Aquatic Toxicology·Elin Lundström BellezaMagnus Breitholtz
Apr 30, 2013·Integrated Environmental Assessment and Management·Paul J Van den BrinkAndreas Focks
May 9, 2014·Environmental Science & Technology·Romain CoulaudArnaud Chaumot

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