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首页> 外文会议>Symposium on Influences of Landscape on Stream Habitat and Biological Communities >Land-Use Effects on Catchment- and Patch-Scale Habitat and Macroinvertebrate Responses in the Adirondack Uplands
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Land-Use Effects on Catchment- and Patch-Scale Habitat and Macroinvertebrate Responses in the Adirondack Uplands

机译：在Adirondack Uplands中对集水区和补丁规模栖息地和大型脊椎动物反应的土地利用影响

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Catchment characteristics and land-use practices can affect stream habitats at a variety of spatial scales. A suite of variables describing catchment geomorphology (area, circularity, slope, elevation, soil depth, surficial geology), surface water hydrology (drainage density, water velocity, Froude number), and patch (channel) habitat (slope, bank-full width, water depth, substrate particle size, stored and transported organic matter, transported inorganic sediment) were determined using a geographicinformation systems and field surveys in 19 upland Adirondack catchments (New York, USA) with differing land uses (New York Forest Preserve [Preserve] versus logging). Surber samples of macroinvertebrate assemblages and stored organic matter were collected in July 2003. Catchment geomorphology was similar between land-use types. However, Preserve streams tended to have deeper and wider channels, despite steeper channel slopes, while logged streams had more stored organic matter and finer substrate particles. We collected 177 macroinvertebrate taxa from the streams, and taxa richness was significantly reduced in logged catchments (p = 0.006). Twenty-seven taxa occurred more frequently in Preserve sites, while nine taxa occurred more commonly in loggedstreams (chi-square,p < 0.10). Distributions of these taxa were related to water quantity, channel geomorphology, and particle size at the patch scale and circularity, drainage patterns, and sediment load at the reach scale. The presence and absence of invertebrate taxa across the Adirondack landscape was controlled mainly by a combination of catchment-scale geomorphic and anthropogenic (forest management) factors. Patch-scale factors, although influenced by their catchments, had less effect on distributions.
机译：集水区特征和土地利用实践可以影响各种空间尺度的流栖息地。描述集水区的变量套件（面积，圆形，坡度，海拔，土壤深度，表格地质），表面水水文（排水密度，水速，FRoude号）和贴片（频道）栖息地（斜坡，银行全宽，使用与19个Upland Adirondack集水区（纽约，美国）的地理信息系统和田间调查（纽约森林保护区）（纽约森林保护区）（纽约森林保护区）（纽约森林保留[保留]）测定水深，储存的有机物质，运输的有机物质，输送的无机沉积物。与日志记录）。 2003年7月收集了大型脊椎动物组合和储存物质的垃圾样本。土地使用类型之间的流域地貌相似。然而，尽管往复斜坡倾斜，但是往复为具有更深更宽的通道，并且记录的流具有更储存的有机物质和更细的衬底颗粒，因此保持更宽的沟道。从溪流中收集了177个大型近似的分类群，标志表中的素数富裕程度明显减少（P = 0.006）。在保存网站中，27个分类群更频繁地发生，而九株纳税群更常见于核心（Chi-Square，P <0.10）。这些分类的分布与水量，通道地貌和颗粒尺寸在达尺寸下的脉冲量和圆形度，排水模式和沉积物负荷有关。在阿迪朗达克景观中的存在和缺失是由集水量大地貌和人为（森林管理）因素的组合来控制的。斑纹尺度因子虽然受到它们的流域的影响，但对分布效果较小。

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