| Impacts of Rotational Grazing and Riparian Buffers on Physicochemical and Biological Characteristicsof Southeastern Minnesota, USA, Streams. | |
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MedLine Citation:
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PMID: 11029114 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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We assessed the relationship between riparian management and stream quality along five southeastern Minnesota streams in 1995 and 1996. Specifically, we examined the effect of rotationally and continuously grazed pastures and different types of riparian buffer strips on water chemistry, physical habitat, benthic macroinvertebrates, and fish as indicators of stream quality. We collected data at 17 sites under different combinations of grazing and riparian management, using a longitudinal design on three streams and a paired watershed design on two others. Continuous and rotational grazing were compared along one longitudinal study stream and at the paired watershed. Riparian buffer management, fenced trees (wood buffer), fenced grass, and unfenced rotationally grazed areas were the focus along the two remaining longitudinal streams. Principal components analysis (PCA) of water chemistry, physical habitat, and biotic data indicated a local management effect. The ordinations separated continuous grazing from sites with rotational grazing and sites with wood buffers from those with grass buffers or rotationally grazed areas. Fecal coliform and turbidity were consistently higher at continuously grazed than rotationally grazed sites. Percent fines in the streambed were significantly higher at sites with wood buffers than grass and rotationally grazed areas, and canopy cover was similar at sites with wood and grass buffers. Benthic macroinvertebrate metrics were significant but were not consistent across grazing and riparian buffer management types. Fish density and abundance were related to riparian buffer type, rather than grazing practices. Our study has potentially important implications for stream restoration programs in the midwestern United States. Our comparisons suggest further consideration and study of a combination of grass and wood riparian buffer strips as midwestern stream management options, rather than universally installing wood buffers in every instance. |
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Authors:
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Sovell; Vondracek; Frost; Mumford |
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Publication Detail:
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Type: JOURNAL ARTICLE |
Journal Detail:
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Title: Environmental management Volume: 26 ISSN: 1432-1009 ISO Abbreviation: Environ Manage Publication Date: 2000 Dec |
Date Detail:
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Created Date: 2000-10-11 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7703893 Medline TA: Environ Manage Country: - |
Other Details:
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Languages: ENG Pagination: 629-641 Citation Subset: - |
Affiliation:
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Minnesota Cooperative Fish and Wildlife Research Unit, Department of Fisheries and Wildlife, University of Minnesota, 1980 Folwell Avenue, St. Paul, Minnesota 55108, USA |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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