1990
DOI: 10.3133/cir1049
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Applicability of ambient toxicity testing to national or regional water-quality assessment

Abstract: Introduction 1 Need for Biological Methods in Water-Quality Assessment 1 Difficulties of Biological Methods in Water

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Cited by 8 publications
(12 citation statements)
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References 72 publications
(113 reference statements)
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“…Appropriate environmental samples for assessment may include field-collected water and sediments or contaminant fractions sequestered through sampling procedures, such as the previously described SPMDs. Toxicity testing has many benefits, but it also has some limitations that should be considered as a component of a national or regional waterquality assessment (Elder, 1990). The following descriptions address examples of whole-organism toxicity-testing techniques that have been shown to be useful in evaluating environmental contaminants.…”
Section: Whole-organism and Single-species Techniquesmentioning
confidence: 99%
“…Appropriate environmental samples for assessment may include field-collected water and sediments or contaminant fractions sequestered through sampling procedures, such as the previously described SPMDs. Toxicity testing has many benefits, but it also has some limitations that should be considered as a component of a national or regional waterquality assessment (Elder, 1990). The following descriptions address examples of whole-organism toxicity-testing techniques that have been shown to be useful in evaluating environmental contaminants.…”
Section: Whole-organism and Single-species Techniquesmentioning
confidence: 99%
“…Organisms may bioaccumulate pesticides and other SOC's from either water, food, or sediments, and their tissue may accumulate, in time, concentrations several orders of magnitude higher than the aqueous concentrations of the compounds. Many of the effects of bioaccumulation are complex and unknown (Elder, 1990).…”
Section: Overview Of Pesticides and Other Synthetic Organic Compoundsmentioning
confidence: 99%
“…Para Rand (1995) a seleção das espécies a serem utilizadas em testes de toxicidade devem seguir as seguintes premissas: os organismos devem ter significativa representação ecológica e econômica dentro das biocenoses, abundância e disponibilidade, bem como a importância comercial ou na cadeia alimentar; apresentar estabilidade genética e uniformidade de suas populações; ter baixo índice de sazonalidade; ter sensibilidade constante e apurada, e ainda, esses organismos-teste devem ser de fácil cultivo em laboratório, e para melhor representatividade dos ecossistemas, se possível, a espécie deve ser nativa. Elder (1989) acrescenta que, além dos organismos-teste responderem à variedade de contaminantes em concentrações naturalmente encontradas no ambiente, essas espécies devem ser representativas, ou seja, as respostas ao contaminante devem corresponder às respostas esperadas a uma comunidade, sugere ainda que, os procedimentos experimentais devem ser simples e rápidos, como também promover a reprodutibilidade dos resultados.…”
Section: Organismos-testeunclassified