Climatic Niche Shifts During Biological Invasions Decrease With Genetic Diversity Loss

doi:10.1111/gcb.71122

2026-09-24

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DOI：10.1111/gcb.71122

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气候生态位保守性是预测生物入侵风险和物种在气候变化下范围扩张的基本假设。然而，不同物种的越来越多证据表明，在新分布区内存在气候生态位转移。尽管已投入大量努力来识别气候生态位转移的生态预测因子，但物种适应新气候生态位的遗传过程在很大程度上尚不清楚。本研究基于全球38种外来陆生脊椎动物84次具有特定原生生境范围的引种事件，发现尽管入侵物种在入侵后倾向于表现出遗传多样性降低，但当物种在外来生境内的遗传多样性降幅相对较小时，气候生态位转移更容易发生。有趣的是，遗传多样性变化对生态位转移的影响并非通过传播体压力或定居时间产生，而这两者传统上被认为会影响生态位转移。本研究强调了在持续全球变化背景下，将生态适应因素纳入预测模型以评估生物入侵和物种范围扩张风险的重要性。

Keyword:

adaptation

biological invasion

climate change

genetic diversity

niche expansion

terrestrial vertebrates

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Global Change Biology

IF:

论文数:

8.9K

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