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Effects of nonylphenol on zooplankton in aquatic microcosms
Author(s) -
Severin Gabriele F.,
Welzl Gerhard,
Jüttner Ingrid,
Pfister Gerd,
Schramm KarlWerner
Publication year - 2003
Publication title -
environmental toxicology and chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.1
H-Index - 171
eISSN - 1552-8618
pISSN - 0730-7268
DOI - 10.1897/02-189
Subject(s) - cladocera , zooplankton , microcosm , biology , copepod , nonylphenol , branchiopoda , bosmina , ecology , crustacean , environmental chemistry , chemistry , genetics
Abstract We investigated the effects of the endocrine disruptor nonylphenol (NP) on the zooplankton assemblages of 230 L aquatic microcosms during a four‐week preapplication period, a six‐week NP treatment via controlled release, and a six‐week postapplication period. Zooplankton assemblage change, investigated by ordination principal response curves (PRC), was due to lower abundances of copepoda, rotifera, and cladocera. The most sensitive groups/taxa were copepoda larvae, followed by the rotifers Synchaeta spp., Polyarthra spp., and the cladocerans Daphnia longispina and Chydorus sphaericus. The mean no‐observedeffect concentrations for the community (NOEC Community ) was 30 μg/L. Cladocera densities recovered during the postapplication period at all but the highest NP concentrations (maximum 120 μg/L); copepod densities did not recover at the three highest concentrations (maximum 96‐120 μg/L).