Bottom-up and top-down approaches to assess multiple stressors over large geographic areas
The relationship of multiple factors, such as instream habitat, drainage area, gradient, cumulative effluent, conventional pollutants, and chemical mixtures, to fish communities was explored at the subbasin, basin, and state level within the state of Ohio, USA. Two approaches were used: bottom‐up, w...
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Published in | Environmental toxicology and chemistry Vol. 19; no. 4; pp. 1066 - 1075 |
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Main Authors | , , , , |
Format | Journal Article Conference Proceeding |
Language | English |
Published |
Hoboken
Wiley Periodicals, Inc
01.04.2000
SETAC |
Subjects | |
Online Access | Get full text |
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Summary: | The relationship of multiple factors, such as instream habitat, drainage area, gradient, cumulative effluent, conventional pollutants, and chemical mixtures, to fish communities was explored at the subbasin, basin, and state level within the state of Ohio, USA. Two approaches were used: bottom‐up, which focused on subbasin‐ and basin‐level relationships within the Great Miami River, Ohio, and top‐down, focusing on relationships across the entire state. Data were provided by the Ohio Environmental Protection Agency and the U.S. Environmental Protection Agency. These data were integrated via a geographical information system. Multiple linear regression was used to determine the strength of stressor–response relationships. The greatest amount of variation of the index of biotic integrity (IBI) and selected metrics was addressed at the subbasin level, followed by the basin and state level, respectively. Overall, habitat factors were the best predictors and positively related to the IBI and number of fish species. Chemical factors, such as cumulative effluent, metals, ammonia, and biochemical oxygen demand, were consistently observed as negative, moderating factors for IBI and fish taxa richness and were the best predictors of the percent of fish observed with deformities, fin erosions, lesions, and tumors. |
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Bibliography: | ark:/67375/WNG-MG9TQ9T2-H ArticleID:ETC5620190437 Presented at the American Society for Testing and Materials-U.S. Environmental Protection Agency-Society of Environmental Toxicology and Chemistry Symposium on Ecosystem Vulnerability, Seattle, Washington, USA, August 17-20, 1998. istex:6277D7E0C4361304DF333E2BDF6DC547C2F7D1DD Presented at the American Society for Testing and Materials–U.S. Environmental Protection Agency–Society of Environmental Toxicology and Chemistry Symposium on Ecosystem Vulnerability, Seattle, Washington, USA, August 17–20, 1998. ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0730-7268 1552-8618 |
DOI: | 10.1002/etc.5620190437 |