Intercontinental biotic invasions: what can we learn from native populations and habitats? |
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Authors: | Qinfeng Guo |
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Institution: | (1) U.S. Geological Survey, Northern Prairie Wildlife Research Center, 8711 37th St. SE, Jamestown, 58401, ND, USA |
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Abstract: | The effectiveness of management strategies for invasive species is often hampered by a lack of clear understanding of the
factors that limit species distributions. The distribution of exotic species, especially those that are invasive, are often
so dynamic that limiting factors are difficult to identify. Comparisons of exotic species between their native ranges, where
they are presumably close to equilibrium with controlling factors, and their ranges in areas of introduction can circumvent
this difficulty. Such studies would help identify (1) limiting factors for distributions in native ranges, (2) factors associated
with a high degree of invasiveness, (3) changes in genetics and morphology since introduction, which also might contribute
to invasiveness, and (4) future directions and rates of invasion as a basis for developing detection/warning systems. Findings
from such comparative studies would be highly valuable for understanding the dynamics of biological invasions and for improving
the effectiveness of management to prevent or control invasives. |
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Keywords: | comparative methods invasive species native vs exotic populations and habitats neo-disjunctions trans-Pacific biotic invasions |
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