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首页> 外文期刊>Bulletin of the British Arachnological Society >The spider assemblages (Araneae) of exposed riverine sediments in Scotland and northern England
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The spider assemblages (Araneae) of exposed riverine sediments in Scotland and northern England

机译：苏格兰和英格兰北部裸露的河流沉积物的蜘蛛组合（Araneae）

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摘要

A survey of spiders using pitfall traps on exposed riverine sediments (ERS) by rivers and tributaries in four catchments in Scotland and northern England yielded 105 species and lists from 149 sites. These data were analysed using ordination and classification techniques to identify the species assemblages present within and between catchments and the factors affecting the distribution of these assemblages. There were major differences between assemblages on ERS in highland and lowland catchments, but the major factor within catchments was the amount and type of vegetation. The distribution of sites within habitat groups tended to be related to site location within catchments, but sediment composition also had a limited effect on assemblage distribution. Few specialist ERS species were recorded, whilst a variety of species found on other habitats such as unmanaged and agricultural grasslands, wetlands and bare ground, were found on sediments throughout the four catchments. Fewer spider assemblageswere identified on riverine sediments as compared with other invertebrate groups recorded from the same sites.
机译：在苏格兰和英格兰北部的四个流域，河流和支流使用陷阱诱捕器对裸露的河流沉积物（ERS）进行的蜘蛛调查产生了105种物种，并列出了149个站点。使用排序和分类技术对这些数据进行了分析，以确定流域内和流域之间存在的物种集合以及影响这些集合分布的因素。高地流域和低地流域的ERS组合之间存在主要差异，但集水区内的主要因素是植被的数量和类型。栖息地组内地点的分布往往与流域内地点的位置有关，但沉积物组成对组合分布的影响也有限。记录到的ERS专业物种很少，而在四个流域的沉积物中发现了其他栖息地（例如未管理和农业草地，湿地和裸地）上发现的各种物种。与从相同地点记录的其他无脊椎动物组相比，在河流沉积物上发现的蜘蛛组合较少。

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