Quantification of the relative abundance of the toxic dinoflagellate, Karenia brevis (Dinophyta), using unique photopigments

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dc.acquisition-srcDownloaded from-Web of Scienceen_US
dc.call-noen_US
dc.contract-noen_US
dc.contributor.authorOrnolfsdottir EBen_US
dc.contributor.authorPinckney JLen_US
dc.contributor.authorTester PAen_US
dc.contributor.otherJournal of Phycologyen_US
dc.date.accessioned2010-02-15T17:16:59Z
dc.date.available2010-02-15T17:16:59Z
dc.date.issued2003 Apren_US
dc.degreeen_US
dc.description449-457en_US
dc.description-otheren_US
dc.description.abstractDiagnostic photopigment analysis is a useful tool for determining the presence and relative abundance of algal groups in natural phytoplankton assemblages. This approach is especially useful when a genus has a unique photopigment composition. The toxic dinoflagellate Karenia brevis (Davis) G. Hansen & Moestrup comb. nov. shares the diagnostic pigment gyroxanthin-diester with only a few other dinoflagellates and lacks peridinin, one of the major diagnostic pigments of most dinoflagellate species. In this study, measurements of gyroxanthin-diester and other diagnostic pigments of K. brevis were incorporated into the initial pigment ratio matrix of the chemical taxonomy program (CHEMTAX) to resolve the relative contribution of K. brevis biomass in mixed estuarine phytoplankton assemblages from Florida and Galveston Bay, Texas. The phytoplankton community composition of the bloom in Galveston Bay was calculated based on cell enumerations and biovolumetric measurements in addition to chl a -specific photopigment estimates of biomass (HPLC and CHEMTAX). The CHEMTAX and biovolume estimates of the phytoplankton community structure were not significantly different and suggest that the HPLC-CHEMTAX approach provides reasonable estimates of K. brevis biomass in natural assemblages. The gyroxanthin-diester content per cell of K. brevis from Galveston Bay was significantly higher than in K. brevis collected from the west coast of Florida. This pigment-based approach provides a useful tool for resolving spatiotemporal distributions of phytoplankton in the presence of K. brevis blooms, when an appropriate initial ratio matrix is applieden_US
dc.description.urihttp://gbic.tamug.edu/request.htmen_US
dc.historyen_US
dc.identifier.urihttp://hdl.handle.net/1969.3/23427
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dc.locationen_US
dc.longitudeen_US
dc.notesTimes Cited: 2ArticleEnglishOrnolfsdottir, E. BInst Freshwater Fisheries, Vagnhofda 7, IS-110 Reykjavik, IcelandCited References Count: 44660YB350 MAIN ST, MALDEN, MA 02148 USAMALDENen_US
dc.placeen_US
dc.publisheren_US
dc.relation.ispartofseries51074.00en_US
dc.relation.urien_US
dc.scaleen_US
dc.seriesen_US
dc.subjectCHEMTAXen_US
dc.subjectGALVESTON BAYen_US
dc.subjectHPLCen_US
dc.subjectKarenia brevisen_US
dc.subjectphotopigment biomarkersen_US
dc.subjectred tideen_US
dc.subjectRED-TIDE DINOFLAGELLATEen_US
dc.subjectPERFORMANCE LIQUID-CHROMATOGRAPHYen_US
dc.subjectPHYTOPLANKTON COMMUNITY-STRUCTUREen_US
dc.subjectWESTERN EQUATORIAL PACIFICen_US
dc.subjectALGAL CLASS ABUNDANCESen_US
dc.subjectGYMNODINIUM-BREVEen_US
dc.subjectPIGMENT ANALYSISen_US
dc.subjectPHOTOSYNTHETIC PIGMENTSen_US
dc.subjectGYRODINIUM-AUREOLUMen_US
dc.subjectCAROTENOID-PIGMENTSen_US
dc.titleQuantification of the relative abundance of the toxic dinoflagellate, Karenia brevis (Dinophyta), using unique photopigmentsen_US
dc.typeJournalen_US
dc.universityen_US
dc.vol-issue39(2)en_US

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