Data from : Historical legacies and ecological determinants of grass naturalizations worldwide

The global distribution of exotic species is the result of abiotic, biotic and dispersal filtering processes that shape the movement and success of species outside their native range. In this study we aim to understand how these filtering processes drive the fluxes of grass species among regions, the factors that influence which species establish outside of their native range, and where they do so. We used national and subnational checklists of native and introduced grass species to determine the extent to which each region was a source or recipient of exotic grass species. We asked how species traits may distinguish those grass species that have naturalized outside their native range from those that have not, and how environmental conditions are related to the distribution of exotic grass species. We found that exotic grass establishment is shaped by an array of factors including characteristics of regions, traits of species and their interactions. Regions with a lon...外来物种的全球分布格局，由非生物过滤、生物过滤与扩散过滤三类过程共同塑造——这些过程决定了物种在原生分布范围之外的扩散过程与定居成功率。本研究旨在阐明上述三类过滤过程如何驱动禾本科物种在各区域间的流通，明确哪些因素会影响物种在原生分布区之外成功定居，以及这些外来禾草的具体分布区域。 本研究通过收集国家级与次国家级的原生禾草与引种禾草名录，用以判定各区域作为外来禾草物种源区或接收区的程度。我们探究了物种性状如何区分已在原生分布区外成功归化的禾草物种与未归化者，同时分析环境条件与外来禾草物种分布之间的关联。 研究发现，外来禾草的定居过程受多重因素共同调控，包括区域自身特征、物种性状及其交互作用。具备更长...