生物扩散
生态学
空模式
栖息地
生物多样性
竞赛(生物学)
结构化
空间生态学
地理
物种丰富度
生物
财务
社会学
人口学
经济
人口
作者
Yifei Jia,Qing Zeng,Yuyu Wang,Neil Saintilan,Guangchun Lei,Lei Wen
标识
DOI:10.1016/j.ecolind.2020.106330
摘要
Better understanding of the mechanisms structuring ecological communities is not only a long-term theoretical pursuit in ecology but also critical for biodiversity conservation. Here, we used two complementary approaches (β-diversity partitioning, and phylogenetic and functional null models) to explore the processes structuring wintering waterbird communities in the floodplain lakes of middle-lower Yangtze River (MLYR), China. We found that 1) neutral assembly might be the predominant process shaping the composition of wintering waterbird communities in MLYR; 2) compared to environmental factors, spatial variables, in particular those describing the large scale spatial structure among lakes, contributed more in explaining the functional and phylogenetic composition variations across the region, indicating dispersal constraints might strongly mediate neutral processes. The dispersal constraint could be imposed by movement barriers caused by anthropogenic landscape modification, site fidelity, or both; and 3) strong dispersal constraints could lead to competitive exclusion superimposed over neutrally assembly isolated communities, a hypothesis confirmed by the α- and β-null models. These findings provide strong support for the importance of conserving and improving ecological connectivity at the regional scale as well as habitat quality enhancement at lake scale.
科研通智能强力驱动
Strongly Powered by AbleSci AI