期刊
ECOLOGY AND EVOLUTION
卷 7, 期 13, 页码 4982-4990出版社
WILEY
DOI: 10.1002/ece3.3072
关键词
climate change; ecological niche models; genetic lineage; Hydrilla verticillata; invasive species; niche shift
资金
- National Natural Science Foundation of China [31270265]
- Major Science and Technology Program for Water Pollution Control and Treatment [2015ZX07503-005]
Ecological niche modeling is an effective tool to characterize the spatial distribution of suitable areas for species, and it is especially useful for predicting the potential distribution of invasive species. The widespread submerged plant Hydrilla verticillata (hydrilla) has an obvious phylogeographical pattern: Four genetic lineages occupy distinct regions in native range, and only one lineage invades the Americas. Here, we aimed to evaluate climatic niche conservatism of hydrilla in North America at the intraspecific level and explore its invasion potential in the Americas by comparing climatic niches in a phylogenetic context. Niche shift was found in the invasion process of hydrilla in North America, which is probably mainly attributed to high levels of somatic mutation. Dramatic changes in range expansion in the Americas were predicted in the situation of all four genetic lineages invading the Americas or future climatic changes, especially in South America; this suggests that there is a high invasion potential of hydrilla in the Americas. Our findings provide useful information for the management of hydrilla in the Americas and give an example of exploring intraspecific climatic niche to better understand species invasion.
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