Data and scripts from: Replacement drives native β-diversity of British avifauna, while richness differences shape alien β-diversity

Aim: We explored the range shifts of alien and native birds, the responses of alien and native β-diversity to abiotic factors, and the effect of native diversity on alien β-diversity in two time periods. Location: Great Britain. Time period: 1968–1972, 2007–2011. Taxa studied: Breeding birds. Methods: We estimated range shifts of alien and native species between the periods 1968–1972 and 2007–2011. Following, β-diversity of alien and native communities was estimated by Jaccard pairwise index (βtot) and partitioned into richness difference and replacement component for each period. We built abiotic Generalized Dissimilarity Models including abiotic factors for alien and native βtot and their components and a biotic model for aliens including native taxonomic and functional diversity as predictors. Results: Most alien and half native species expanded into new regions during the 40-year period. The native species range shifts did not exhibit a clear pattern along the longitudinal or latitu...研究目的：本研究探讨了两个时段内外来与本土鸟类的分布范围变化、外来及本土β多样性（β-diversity）对非生物因子的响应，以及本土多样性对外来β多样性的影响。 研究区域：大不列颠（Great Britain）。 研究时段：1968–1972年、2007–2011年。 研究类群：繁殖鸟类。 研究方法：本研究估算了1968–1972年与2007–2011年两个时段内外来与本土物种的分布范围变化。随后，采用雅卡尔（Jaccard）成对相似性指数（βtot）对外来与本土群落的β多样性进行估算，并将各时段的β多样性拆分为物种丰富度差异组分与物种更替组分。针对外来与本土β多样性及其组分，构建了纳入非生物因子的非生物广义相异性模型（Generalized Dissimilarity Models）；同时构建了以本土分类多样性与功能多样性为预测变量的外来群落生物模型。 研究结果：在40年的研究周期内，多数外来鸟类物种与半数本土鸟类物种实现了分布范围扩张。本土鸟类的分布范围变化未呈现出沿经度或纬度的清晰模式……