Estuarine phytoplankton group-specific responses to sublethal concentrations of the agricultural herbicide, atrazine

dc.acquisition-srcDownloaded from-Web of Scienceen_US
dc.call-noen_US
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dc.contributor.authorPinckney JLen_US
dc.contributor.authorOrnolfsdottir EBen_US
dc.contributor.authorLumsden SEen_US
dc.contributor.otherMarine Pollution Bulletinen_US
dc.date.accessioned2010-02-15T17:17:00Z
dc.date.available2010-02-15T17:17:00Z
dc.date.issued2002 Octen_US
dc.degreeen_US
dc.description1109-1116en_US
dc.description-otheren_US
dc.description.abstractAtrazine is a common agricultural herbicide that is readily transported into estuaries through surface water runoff. In this study, we determined the short-term (24-48 h) sublethal effects of atrazine on estuarine phytoplankton biomass and community composition. Phytoplankton group-specific responses to atrazine exposure (25 mug l(-1)) were measured using natural water samples collected from two locations in Galveston Bay, Texas. Addition bioassays, coupled with HPLC pigment analysis, were used to quantify changes in the relative abundances of algal groups. For all algal groups except prasinophytes, the addition of atrazine in combination with nitrate was not significantly different from nitrate additions alone. These results suggest no significant negative effect of atrazine on phytoplankton under the specified environmental conditions for the bioassays. Although low concentrations of atrazine may have minimal impacts on phytoplankton, herbicide loadings need to be further characterized before generalizations can be applied to estuarine and coastal ecosystems. (C) 2002 Elsevier Science Ltd. All rights reserveden_US
dc.description.urihttp://gbic.tamug.edu/request.htmen_US
dc.historyen_US
dc.identifier.urihttp://hdl.handle.net/1969.3/23430
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dc.notesTimes Cited: 1ArticleEnglishPinckney, J. LTexas A&M Univ, Dept Oceanog, 3146 TAMU, College Stn, TX 77843 USACited References Count: 51616GWTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDOXFORDen_US
dc.placeen_US
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dc.relation.ispartofseries51077.00en_US
dc.relation.urien_US
dc.scaleen_US
dc.seriesen_US
dc.subjectatrazineen_US
dc.subjectTEXASen_US
dc.subjectPHYTOPLANKTONen_US
dc.subjectESTUARYen_US
dc.subjectGulf of Mexicoen_US
dc.subjectnutrienten_US
dc.subjectagricultureen_US
dc.subjectherbicideen_US
dc.subjectPOTAMOGETON-PERFOLIATUS Len_US
dc.subjectMARINE-PHYTOPLANKTONen_US
dc.subjectMississippi Riveren_US
dc.subjectRISK ASSESSMENTen_US
dc.subjectGALVESTON-BAYen_US
dc.subjectcommunityen_US
dc.subjectPIGMENTSen_US
dc.subjectALGAEen_US
dc.subjectMACROPHYTESen_US
dc.subjectENVIRONMENTen_US
dc.titleEstuarine phytoplankton group-specific responses to sublethal concentrations of the agricultural herbicide, atrazineen_US
dc.typeJournalen_US
dc.universityen_US
dc.vol-issue44(10)en_US

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