2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/24/2018 | 9:45 AM - 10:00 AM | COMPARING AGRICULTURAL AND URBAN LAND USE IMPACTS ON THE COMPONENTS OF ECOLOGICAL INTEGRITY: AN EMPIRICAL ANALYSIS | 330 A
COMPARING AGRICULTURAL AND URBAN LAND USE IMPACTS ON THE COMPONENTS OF ECOLOGICAL INTEGRITY: AN EMPIRICAL ANALYSIS
Both agricultural and urban land use have long been linked to nutrient enrichment, habitat degradation, hydrologic alteration, and loss of biotic integrity in U.S. streams. Less understood, but critical to on-the-ground land planning efforts, are questions about the relative impact of differing human land uses and the role of their spatial proximity to channel systems. In this study we explored USGS datasets from across the U.S. using structural equation modeling to investigate the relative effects of urban and agricultural land use on different aspects of stream ecological integrity. In a national scale model agriculture had twice the negative effect on physical habitat as did urban land use while both had similar magnitude effects on water quality. However, urban land use had a significantly stronger direct effect on the biological community. The relative and absolute effects of both types of land use varied by ecoregion; e.g. urban land use had stronger effects on water quality in the Eastern Temperate Forest and Western Mountain regions than in Great Plains. Across these models, riparian land use effects were almost always stronger and more statistically significant the basin-wide land use effects.
- Assessment
- Biological Criteria
- Habitat
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Presenters/Authors
Catherine Riseng
(), University of Michigan, criseng@umich.edu;
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Mike Wiley
(), University of Michigan, mjwiley@umich.edu;
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Ian Waite
(), U.S. Geological Survey, Portland, OR, iwaite@usgs.gov;
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Mark Munn
(), U.S. Geological Survey, Tacoma, WA, mdmunn@usgs.gov;
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