Document Detail


Ranking ecological risks of multiple chemical stressors on amphibians.
MedLine Citation:
PMID:  22488839     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Populations of amphibians have been declining worldwide since the late 1960 s. Despite global concern, no studies have quantitatively assessed the major causes of this decline. In the present study, species sensitivity distributions (SSDs) were developed to analyze the sensitivity of anurans for ammonium, nitrate, heavy metals (cadmium, copper), pesticides (18 compounds), and acidification (pH) based on laboratory toxicity data. Ecological risk (ER) was calculated as the probability that a measured environmental concentration of a particular stressor in habitats where anurans were observed would exceed the toxic effect concentrations derived from the SSDs. The assessment of ER was used to rank the stressors according to their potential risk to anurans based on a case study of Dutch freshwater bodies. The derived ERs revealed that threats to populations of anurans decreased in the sequence of pH, copper, diazinon, ammonium, and endosulfan. Other stressors studied were of minor importance. The method of deriving ER by combining field observation data and laboratory data provides insight into potential threats to species in their habitats and can be used to prioritize stressors, which is necessary to achieve effective management in amphibian conservation. Environ. Toxicol. Chem. © 2012 SETAC.
Authors:
Anastasia Fedorenkova; J Arie Vonk; H J Rob Lenders; Raymond C M Creemers; Anton M Breure; A Jan Hendriks
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-4-5
Journal Detail:
Title:  Environmental toxicology and chemistry / SETAC     Volume:  -     ISSN:  1552-8618     ISO Abbreviation:  -     Publication Date:  2012 Apr 
Date Detail:
Created Date:  2012-4-10     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8308958     Medline TA:  Environ Toxicol Chem     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 SETAC.
Affiliation:
Institute for Water and Wetland Research, Department of Environmental Science, Radboud University, Nijmegen, The Netherlands.
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