Studies on the distribution and flux of pesticides in waterways associated with a ricefield - marshland ecosystem.

dc.acquisition-srcen_US
dc.call-noAcc# 1112en_US
dc.contract-noen_US
dc.contributor.authorGinn, T.M.en_US
dc.contributor.authorFisher, F.M., Jr.en_US
dc.contributor.otherPesticides Monitoring Journalen_US
dc.date.accessioned2010-02-15T16:48:07Z
dc.date.available2010-02-15T16:48:07Z
dc.date.issued1974en_US
dc.degreeen_US
dc.descriptionp. 23-32.en_US
dc.description-otheren_US
dc.description.abstractOn coastal prairie and marshland in Chambers County, Texas (USA), the distribution and flux of chlorinated hydrocarbon pesticides in waterways associate with a ricefield - marsh land ecosystem were studied. Aldrin applied with seed rice entered the aquatic ecosystem through drainage of flooded ricefields. Chemical alteration of the pesticide was observed; dieldrin was the primary breakdown product. All insecticides were distributed unevenly, exhibiting a predilection for biotic components of the ecosystem. Residue analyses of representative species of the aquatic biota indicated significant biological accumulation and passage of these refractory compounds along the food chain. Rapid localization and concentration of pesticides in living organisms was observed. Reproductive tissues exhibited a marked affinity for the pesticides. Decline of assimilated residues in both biotic and abiotic components appeared to follow a 1st-order reaction curve. Contamination of the aquatic environment with toxaphene during the study period resulted in a massive kill of aquatic organisms. Neither long-term effects nor significant biological magnification of toxaphene was observed. Other chlorinated hydrocarbon pesticides of unknown origin were detected, including DDE, DDD and DDT.en_US
dc.description.urihttp://gbic.tamug.edu/request.htmen_US
dc.geo-codeChambers Countyen_US
dc.historyen_US
dc.identifier.urihttp://hdl.handle.net/1969.3/18841
dc.latitudeen_US
dc.locationGBIC Collection file roomen_US
dc.longitudeen_US
dc.notesen_US
dc.placeen_US
dc.publisheren_US
dc.relation.ispartofseries1112.00en_US
dc.relation.urien_US
dc.scaleen_US
dc.seriesen_US
dc.subjectpesticidesen_US
dc.subjectinsecticidesen_US
dc.subjectchlorinated hydrocarbonsen_US
dc.subjectdichlorodiphenyltrichloroethane (DDT)en_US
dc.subjectdichlorodiphenylethylene (DDE)en_US
dc.subjectagricultural pollutionen_US
dc.subjectbioaccumulationen_US
dc.titleStudies on the distribution and flux of pesticides in waterways associated with a ricefield - marshland ecosystem.en_US
dc.typeArticleen_US
dc.universityen_US
dc.vol-issue8(1)en_US

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