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Beta diversity and nature reserve system design in the Yukon, Canada

机译：加拿大育空地区的贝塔多样性和自然保护区系统设计

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Design of protected areas has focused on setting targets for representation of biodiversity, but often these targets do not include prescriptions as to how large protected areas should be or where they should be located. Principles of island biogeography theory have been applied with some success, but they have limitations. The so-called SLOSS (single large or several small reserves) debate hinged on applications of island biogeography theory to protected areas but wets resolved only to the point that parties agreed there might be different approaches in different situations. Although proponents on both sides of the SLOSS debate generally agree that replicating protected areas is desirable, it is difficult to determine how to replicate reserves in terms of number and spatial arrangement. More important, many targets for representation often do not address issues of species persistence. Here, we used a geographic information system in a study of disturbance-sensitive mammals of the Yukon Territory, Canada, to design a protected-areas network that maintains a historical assemblage of species goals for component ecoregions. We simultaneously determined patterns of diversity as Whittaker's beta and compositional turnover and examined how these two measures can give further insights into reserve location and spatial arrangement. Both regional heterogeneity and compositional turnover between nonadjacent sites were significant predictors of the number of protected areas necessary to represent mammals within each ecoregion. Thus, protected-area planners can use diversity measures to identify number and spacing of protected areas within ecologically bounded regions.
机译：保护区的设计侧重于设定代表生物多样性的目标，但这些目标通常不包括关于保护区应有多大或应位于何处的规定。岛屿生物地理学理论的原理已获得成功应用，但存在局限性。所谓的SLOSS（单个或几个小保护区）的争论取决于将岛屿生物地理学理论应用于保护区，但湿地的解决只是各方同意在不同情况下可能采用不同的方法。尽管SLOSS辩论的双方都普遍认为，复制保护区是可取的，但很难确定如何在数量和空间安排上复制保护区。更重要的是，许多代表性代表往往没有解决物种持久性的问题。在这里，我们在加拿大育空地区对干扰敏感的哺乳动物的研究中使用了地理信息系统，设计了一个保护区网络，该区域网对组成生态区域的物种目标进行了历史性组合。我们同时确定了多样性模式，如Whittaker的beta和成分周转率，并研究了这两种措施如何能够进一步洞察保护区的位置和空间布局。区域异质性和不相邻站点之间的成分转换都是代表每个生态区域内的哺乳动物所必需的保护区数量的重要预测指标。因此，保护​​区规划者可以使用多样性措施来确定生态受限区域内保护区的数量和间隔。

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