Positive Effects of Agricultural Land Use Changes on Coldwater Fish Communities in Southwest Wisconsin Streams
| Autor: | James Baumann, Joseph M. Hennessy, David W. Marshall, Andrew H. Fayram, John C. Panuska |
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| Rok vydání: | 2008 |
| Předmět: |
Ecology
ved/biology ved/biology.organism_classification_rank.species Community structure STREAMS Management Monitoring Policy and Law Aquatic Science Land area Index of biological integrity Coldwater fish Geography Agricultural land Species richness Conservation Reserve Program Ecology Evolution Behavior and Systematics |
| Zdroj: | North American Journal of Fisheries Management. 28:944-953 |
| ISSN: | 1548-8675 0275-5947 |
| DOI: | 10.1577/m06-139.1 |
| Popis: | The Conservation Reserve Program (CRP) is a federal program that encourages the planting of cool- or warm-season grass cover on highly erodible croplands and along stream corridors. We sought to determine whether fish community structure in coldwater streams was associated with CRP and other agricultural land use changes in southwestern Wisconsin. We compared coldwater fish index of biotic integrity (IBI) scores and species richness in streams located in areas of relatively high (21.3% of land area; high-CRP area) versus relatively low (12.1% of land area; low-CRP area) CRP participation. All of the streams were sampled in the 1970s before implementation of the CRP and again at the same locations after implementation, from 2000 to 2005. Pre-CRP fish communities were characterized by a relatively high diversity of eurythermal species and low coldwater IBI scores. We found significant increases in coldwater IBI scores over time in streams within the high-CRP area relative to streams within the low-... |
| Databáze: | OpenAIRE |
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