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Ecological risk assessment of current-use pesticides in the Sixaola Watershed, Costa Rica

by Polidoro, Beth A; University of Idaho, Moscow, ID (EUA); CATIE, Turrialba (Costa Rica).
Publisher: Turrialba (Costa Rica) 2007Description: 188 p.Subject(s): PLAGUICIDAS | USOS TRADICIONALES | RIESGO | EVALUACION DE RIESGOS | TOXICIDAD | IMPACTO AMBIENTAL | POLUCION | PROPIEDADES FISICO - QUIMICAS SUELO | EXPERIMENTACION EN CAMPO | AMBIENTE ACUATICO | CUENCAS HIDROGRAFICAS | ORDENACION DE CUENCAS | COSTA RICA | PESTICIDES | TRADITIONAL USES | RISK | RISK ASSESSMENT | TOXICITY | ENVIRONMENTAL IMPACT | POLLUTION | SOIL CHEMICOPHYSICAL PROPERTIES | FIELD EXPERIMENTATION | AQUATIC ENVIRONMENT | WATERSHEDS | WATERSHED MANAGEMENT | COSTA RICA | PESTICIDE | UTILISATION TRADITIONNELLE | RISQUE | EVALUATION DU RISQUE | TOXICITE | IMPACT SUR L'ENVIRONNEMENT | POLLUTION | PROPRIETE PHYSICOCHIMIQUE DU SOL | EXPERIMENTATION AU CHAMP | MILIEU AQUATIQUE | BASSIN VERSANT | AMENAGEMENT DE BASSIN VERSANT | COSTA RICA | POBLACION INDIGENA;TERRITORIOS ETNICOS;RIO SIXAOLAOnline Resources: Texto completo (En) | En Summary: Among the most important research priorities identified in tropical ecotoxicology is the need for risk assessment models specific to pesticide fate and toxicity in tropical watersheds. A number de different pesticides are applied in the Sixaola watershed, Costa Rica to produce export-quality plantains and bananas. A number of different pesticides were measured in regional aquatic resources using both water grab samples and passive samplers (SPMDs). Field experiments to calibrate SPMD pesticide uptake rates showed that biofouling was not an important factor in SPMD pesticide sequestration over time, although several different stream characteristics may be important in the interpretation os SPMD-derived stream pesticide concentrations.
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53 ilus. 24 tab. Bib.

Tesis (Ph. D.) -- CATIE. Escuela de Posgrado, Turrialba (Costa Rica), University of Idaho, 2007

Among the most important research priorities identified in tropical ecotoxicology is the need for risk assessment models specific to pesticide fate and toxicity in tropical watersheds. A number de different pesticides are applied in the Sixaola watershed, Costa Rica to produce export-quality plantains and bananas. A number of different pesticides were measured in regional aquatic resources using both water grab samples and passive samplers (SPMDs). Field experiments to calibrate SPMD pesticide uptake rates showed that biofouling was not an important factor in SPMD pesticide sequestration over time, although several different stream characteristics may be important in the interpretation os SPMD-derived stream pesticide concentrations.

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