Improving extinction projections across scales and habitats using the countryside species-area relationship
Improving extinction projections across scales and habitats using the countryside species-area relationship
复制标题
利用乡村物种-区域关系改进跨尺度和栖息地的灭绝预测
作者：
Inês S. Martins;H. Pereira
种-面积关系（SAR）常被用来预测由于栖息地丧失而引起的物种灭绝。然而，最近的研究表明，SAR可能高估了物种的保护，至少在短期内。我们认为，这种高估的主要原因是，经典的SAR忽略了物种在人类改造的栖息地的持久性。我们使用在全球范围内收集的数据来分析在完全栖息地转换后，在当地规模上，鸟类和植物物种在不同人类改造栖息地中的比例。我们观察到，这两个类群对不同的土地利用类型有一致的反应，在地球仪的农田和热带地区的牧场中，物种丰富度的减少最多。我们表明，这些研究的结果不能线性缩放从地块到大区域，因为这再次高估了土地利用变化对生物多样性的影响。农村特区提供了一个统一的框架，将景观矩阵中的物种持久性的影响和采样面积的物种灭绝的比例的非线性响应，产生更现实的生物多样性损失的预测。
The species-area relationship (SAR) has been often used to project species extinctions as a consequence of habitat loss. However, recent studies have suggested that the SAR may overestimate species extinctions, at least in the short-term. We argue that the main reason for this overestimation is that the classic SAR ignores the persistence of species in human-modified habitats. We use data collected worldwide to analyse what is the fraction of bird and plant species that remain in different human-modified habitats at the local scale after full habitat conversion. We observe that both taxa have consistent responses to the different land-use types, with strongest reductions in species richness in cropland across the globe, and in pasture in the tropics. We show that the results from these studies cannot be linearly scaled from plots to large regions, as this again overestimates the impacts of land-use change on biodiversity. The countryside SAR provides a unifying framework to incorporate both the effect of species persistence in the landscape matrix and the non-linear response of the proportion of species extinctions to sampling area, generating more realistic projections of biodiversity loss.
影响因子：
8.5
作者：
Hill, Samantha L. L.;Harfoot, Mike;Mace, Georgina M.
通讯作者：
Mace, Georgina M.