Local vs. landscape controls on diversity:: a test using surface-dwelling soil macroinvertebrates of differing mobility
Local vs. landscape controls on diversity:: a test using surface-dwelling soil macroinvertebrates of differing mobility
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DOI：
10.1111/j.1466-822x.2005.00150.x
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发表时间：
2005-05-01
影响因子：
6.4
通讯作者：
Wolters, V
中科院分区：
文献类型：
--
作者：
Dauber, J;Purtauf, T;Wolters, V
目标 更好地了解推动当地物种丰富度的过程及其运作规模对于保护耕地生物多样性至关重要。当地物种丰富度可能受到更大空间尺度上作用的生态过程的控制。关于景观变量对土壤生物群的影响知之甚少。我们研究的目的是通过将地表大型节肢动物物种丰富度的局部变化与栖息地规模（即土地利用和栖息地特征）和景观规模（即周围基质的组成）相关的因素联系起来，部分填补这一空白。地点德国黑森州中部的低投入农业系统的农业景观。方法我们重点关注五个在 流动性和生态要求：蚂蚁、地甲虫、行甲虫、潮虫和千足虫。在不同土地利用（耕地、草地、休耕地）和不同栖息地条件（日照、土壤湿度）的田野中用陷阱捕捉动物。对田地周围250 m半径范围内的景观组成进行了分析。结果两个尺度的因子共同解释了物种丰富度的大量局部变化，但不同类群之间这些因子的解释强度存在显着差异。土地利用特别影响地面甲虫和潮虫，而蚂蚁和行甲虫则更强烈地受到栖息地特征（即日照和土壤特征）的影响。当地梁足类物种的丰富度几乎完全取决于周围的景观。一般来说，邻近景观的组成对大多数土壤大型节肢动物类群的物种丰富度的影响低于土地利用和栖息地特征。主要结论我们得出的结论是，保护耕地景观生物多样性的农业环境计划必须确保对栖息地质量和异质景观镶嵌的管理。
Aim A better understanding of the processes driving local species richness and of the scales at which they operate is crucial for conserving biodiversity in cultivated landscapes. Local species richness may be controlled by ecological processes acting at larger spatial scales. Very little is known about the effect of landscape variables on soil biota. The aim of our study was to partly fill this gap by relating the local variation of surface-dwelling macroarthropod species richness to factors operating at the habitat scale (i.e. land use and habitat characteristics) and the landscape scale (i.e. composition of the surrounding matrix).Location An agricultural landscape with a low-input farming system in Central Hesse, Germany.Methods We focused on five taxa significantly differing in mobility and ecological requirements: ants, ground beetles, rove beetles, woodlice, and millipedes. Animals were caught with pitfall traps in fields of different land use (arable land, grassland, fallow land) and different habitat conditions (insolation, soil humidity). Composition of the surrounding landscape was analysed within a radius of 250 m around the fields.Results Factors from both scales together explained a large amount of the local variation in species richness, but the explanatory strength of the factors differed significantly among taxa. Land use particularly affected ground beetles and woodlice, whereas ants and rove beetles were more strongly affected by habitat characteristics, namely by insolation and soil characteristics. Local species richness of diplopods depended almost entirely on the surrounding landscape. In general, the composition of the neighbouring landscape had a lower impact on the species richness of most soil macroarthropod taxa than did land use and habitat characteristics.Main conclusions We conclude that agri-environment schemes for the conservation of biodiversity in cultivated landscapes have to secure management for both habitat quality and heterogeneous landscape mosaics.