Intra-generic species richness and dispersal ability interact to determine geographic ranges of birds
Intra-generic species richness and dispersal ability interact to determine geographic ranges of birds
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DOI：
10.1111/j.1466-8238.2012.00796.x
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发表时间：
2013-02-01
影响因子：
6.4
通讯作者：
Boehning-Gaese, Katrin
中科院分区：
文献类型：
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作者：
Laube, Irina;Graham, Catherine H.;Boehning-Gaese, Katrin
目的了解影响物种地理分布的因素仍然是生态学和进化生物学的一个挑战。特别是，对于物种的地理范围是否由生物相互作用（如种间竞争）决定，几乎没有共识。我们评估了属内物种丰富度，这可以作为替代生物相互作用，扩散能力，分类群年龄和栖息地的变化，因为末次冰期最大影响的程度，在何种程度上发生在鸟类属西尔维娅（旧大陆典型的莺）在所有地区预测是环境适宜的（即范围填充）。位置古北、非洲热带和印度-马来亚。方法采用提升回归树和岭回归方法，对鸟属Sylvia的范围填充进行量化。我们测试了属内物种丰富度，扩散能力，类群年龄和栖息地的变化，因为最后一次冰期最大范围填充的影响，使用多元回归。为了评估不同的假设如何本地规模的竞争可能会影响大规模的范围动态，我们探索不同的适合性栖息地的属内物种丰富度的模式。结果扩散能力强的林莺表现出更高的范围填充率，但前提是在潜在范围内不适宜生境的同类物种丰富度较低。分类群年龄和栖息地的转变，因为末次盛冰期没有一致的效果。主要结论我们表明，西尔维娅范围的形状的同时，同源物种丰富度和扩散能力的相互作用。我们认为，这种相互作用可能反映了潜在的影响范围填充的竞争。如果生物相互作用一般影响物种在大陆范围内定居和占据生境的能力，那么预测气候变化对生物多样性的影响将是一项挑战。
Aim Understanding the factors that influence the geographic ranges of species remains a challenge in ecology and evolutionary biology. In particular, little consensus exists as to whether geographic ranges of species are determined by biotic interactions such as inter-specific competition. We evaluated how intra-generic species richness, which could act as a surrogate for biotic interactions, dispersal ability, taxon age and habitat shift since the Last Glacial Maximum influenced the extent to which species in the bird genus Sylvia (Old World typical warblers) occur in all areas predicted to be environmentally suitable (i.e. range filling). Location Palaearctic, Afrotropics and Indo-Malaya. Methods We quantified range filling in the bird genus Sylvia using boosted regression trees and ridge regression. We tested for effects of intra-generic species richness, dispersal ability, taxon age and habitat shift since the Last Glacial Maximum on range filling using multiple regression. To evaluate different hypotheses about how local-scale competition might influence large-scale range dynamics we explore patterns of intra-generic species richness in habitats of varying suitability. Results Sylvia warblers with higher dispersal ability showed higher range filling, but only if congeneric species richness in less suitable habitats within their potential range was low. Taxon age and habitat shift since the Last Glacial Maximum had no consistent effect. Main conclusions We show that Sylvia ranges are shaped by the simultaneous, interactive effect of both congeneric species richness and dispersal ability. We suggest that this interaction could reflect a potential effect of competition on range filling. If biotic interactions generally influence the ability of species to colonize and occupy habitat at the continental scale, predicting the impact of climate change on biodiversity will be challenging.