Introduced species that overcome life history tradeoffs can cause native extinctions

被引:84
作者
Catford, Jane A. [1 ,2 ,3 ,4 ]
Bode, Michael [2 ,5 ]
Tilman, David [4 ,6 ]
机构
[1] Univ Southampton, Biol Sci, Southampton SO17 1BJ, Hants, England
[2] Univ Melbourne, Sch BioSci, Melbourne, Vic 3010, Australia
[3] Australian Natl Univ, Fenner Sch Environm & Soc, Canberra, ACT 2601, Australia
[4] Univ Minnesota, Dept Ecol Evolut & Behav, St Paul, MN 55108 USA
[5] Queensland Univ Technol, Sch Math Sci, Brisbane, Qld 4001, Australia
[6] Univ Calif Santa Barbara, Bren Sch Environm, Santa Barbara, CA 93106 USA
基金
澳大利亚研究理事会; 美国国家科学基金会;
关键词
ENEMY RELEASE HYPOTHESIS; ACER-PLATANOIDES L; PLANT INVASIONS; COMPETITION; BIODIVERSITY; METAANALYSIS; COEXISTENCE; HERBIVORY; ESTABLISHMENT; DETERMINANTS;
D O I
10.1038/s41467-018-04491-3
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Introduced species threaten native biodiversity, but whether exotic species can competitively displace native species remains contested. Building on theory that predicts multi-species coexistence based on a competition-colonisation tradeoff, we derive a mechanistic basis by which human-mediated species invasions could cause extinctions through competitive displacement. In contrast to past invasions, humans principally introduce modern invaders, repeatedly and in large quantities, and in ways that can facilitate release from enemies and competitors. Associated increases in exotic species' propagule rain, survival and competitive ability could enable some introduced species to overcome the tradeoffs that constrain all other species. Using evidence from metacommunity models, we show how species introductions could disrupt species coexistence, generating extinction debts, especially when combined with other forms of anthropogenic environmental change. Even though competing species have typically coexisted following past biogeographic migrations, the multiplicity and interactive impacts of today's threats could change some exotic species into agents of extinction.
引用
收藏
页数:7
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