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Developing standards for environmental toxicants: the need to consider abiotic environmental factors and microbe-mediated ecologic processes.

This article suggests and discusses two novel aspects for the formulation of standards for environmental toxicants. First, uniform national standards for each pollutant will be underprotective for some ecosystems and overprotective for others, inasmuch as the toxicity of a pollutant to the indigenou...

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Detalles Bibliográficos
Autores principales: Babich, H, Stotzky, G
Formato: Texto
Lenguaje:English
Publicado: 1983
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1569120/
https://www.ncbi.nlm.nih.gov/pubmed/6339225
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author Babich, H
Stotzky, G
author_facet Babich, H
Stotzky, G
author_sort Babich, H
collection PubMed
description This article suggests and discusses two novel aspects for the formulation of standards for environmental toxicants. First, uniform national standards for each pollutant will be underprotective for some ecosystems and overprotective for others, inasmuch as the toxicity of a pollutant to the indigenous biota is dependent on the physicochemical properties of the recipient environment. As the number of chemicals that need regulation is immense and as microbes appear to respond similarly to pollutant-abiotic factor interactions as do plants and animals, it is suggested that microbial assays be used initially to identify those abiotic factors that most influence the toxicity of specific pollutants. Thereafter, additional studies using plants and animals can focus on these pollutant-abiotic factor interactions, and more meaningful standards can then be formulated more rapidly and inexpensively. Second, it is suggested that the response to pollutants of microbe-mediated ecologic processes be used to quantitate the sensitivity of different ecosystems to various toxicants. Such a quantification, expressed in terms of an "ecological dose 50%" (EcD50), could be easily incorporated into the methodologies currently used to set water quality criteria and would also be applicable to setting criteria for terrestrial ecosystems.
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spelling pubmed-15691202006-09-18 Developing standards for environmental toxicants: the need to consider abiotic environmental factors and microbe-mediated ecologic processes. Babich, H Stotzky, G Environ Health Perspect Research Article This article suggests and discusses two novel aspects for the formulation of standards for environmental toxicants. First, uniform national standards for each pollutant will be underprotective for some ecosystems and overprotective for others, inasmuch as the toxicity of a pollutant to the indigenous biota is dependent on the physicochemical properties of the recipient environment. As the number of chemicals that need regulation is immense and as microbes appear to respond similarly to pollutant-abiotic factor interactions as do plants and animals, it is suggested that microbial assays be used initially to identify those abiotic factors that most influence the toxicity of specific pollutants. Thereafter, additional studies using plants and animals can focus on these pollutant-abiotic factor interactions, and more meaningful standards can then be formulated more rapidly and inexpensively. Second, it is suggested that the response to pollutants of microbe-mediated ecologic processes be used to quantitate the sensitivity of different ecosystems to various toxicants. Such a quantification, expressed in terms of an "ecological dose 50%" (EcD50), could be easily incorporated into the methodologies currently used to set water quality criteria and would also be applicable to setting criteria for terrestrial ecosystems. 1983-03 /pmc/articles/PMC1569120/ /pubmed/6339225 Text en
spellingShingle Research Article
Babich, H
Stotzky, G
Developing standards for environmental toxicants: the need to consider abiotic environmental factors and microbe-mediated ecologic processes.
title Developing standards for environmental toxicants: the need to consider abiotic environmental factors and microbe-mediated ecologic processes.
title_full Developing standards for environmental toxicants: the need to consider abiotic environmental factors and microbe-mediated ecologic processes.
title_fullStr Developing standards for environmental toxicants: the need to consider abiotic environmental factors and microbe-mediated ecologic processes.
title_full_unstemmed Developing standards for environmental toxicants: the need to consider abiotic environmental factors and microbe-mediated ecologic processes.
title_short Developing standards for environmental toxicants: the need to consider abiotic environmental factors and microbe-mediated ecologic processes.
title_sort developing standards for environmental toxicants: the need to consider abiotic environmental factors and microbe-mediated ecologic processes.
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1569120/
https://www.ncbi.nlm.nih.gov/pubmed/6339225
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