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首页> 外文会议>AWRA's 2000 Summer Specialty Conference on Riparian Ecology and Management in Multi-Land USE Watersheds Aug 28-31, 2000 Portland, Oregon >EFFECTS OF RIPARIAN CORRIDORS AND HYDROLOGY ON AGRICULTURAL STREAM BIOTA
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EFFECTS OF RIPARIAN CORRIDORS AND HYDROLOGY ON AGRICULTURAL STREAM BIOTA

机译：里亚尔走廊和水文对农业流生物的影响

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摘要

The U.S. Geological Survey examined 25 agricultural streams in eastern Wisconsin to determine potential relations among stream biological quality, watershed and riparian land cover, and hydrologic characteristics. Fish, benthic invertebrate, and algal community data were collected in 1993 and 1995, along with aquatic habitat, land cover, geologic setting, geomorphic, and hydrologic data. Preliminary results from correlation analysis suggest that the response of aquatic communities and habitat to watershed agricultural land use is affected by riparian corridor, geologic, geomorphic, and hydrologic conditions, but the relations are aquatic community dependent. Fish communities were influenced by riparian and to a lesser degree watershed land cover/use and geologic setting. Invertebrate communities were influenced by baseflow and local habitat, and to a lesser extent riparian corridor width. Algal communities were related to watershed agricultural land use, riparian corridor width, and possibly hydrologic conditions. Habitat quality correlated with hydrologic and geomorphic features. Some metrics within the same community correlated with different environmental variables than others, indicating that care should be used when using only one or two metrics to assess water quality and the importance of one environmental factor over another.
机译：美国地质调查局调查了威斯康星州东部的25条农业河流，以确定河流生物质量，流域和河岸土地覆盖以及水文特征之间的潜在关系。在1993年和1995年收集了鱼类，底栖无脊椎动物和藻类群落数据，以及水生生境，土地覆盖，地质环境，地貌和水文数据。相关分析的初步结果表明，水生群落和生境对流域农业土地利用的反应受河岸走廊，地质，地貌和水文条件的影响，但这种关系取决于水生群落。鱼类群落受到河岸的影响，流域土地覆盖/使用和地质环境的影响较小。无脊椎动物群落受到基流和当地栖息地的影响，在较小程度上受河岸走廊宽度的影响。藻类群落与流域农业土地利用，河岸走廊宽度以及可能的水文条件有关。生境质量与水文和地貌特征有关。同一社区内的某些指标与其他指标相比具有不同的环境变量，这表明当仅使用一个或两个指标来评估水质以及一种环境因素对另一种环境因素的重要性时，应格外小心。

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