外来物种和本地物种的竞争效应和反应可以预测入侵结果吗?
Tingting Wu1, Yuanzhi Li2, Marc W Cadotte3
1State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China.
Fundamental research
|December 30, 2025
概括
竞争效应 (CE) 和响应 (CR) 框架部分预测了入侵成功,但现代物种共存理论 (MCT) 为了解物种相互作用和入侵结果提供了更全面的定量方法.
科学领域:
- 生态生态学 生态生态学
- 侵袭生物学 侵袭生物学
- 理论生态学理论生态学
背景情况:
- 竞争能力,包括竞争效应 (CE) 和竞争反应 (CR),是决定入侵物种成功的关键因素.
- 以前的研究表明,具有高CE和/或低CR的外来物种更有可能入侵本地生态系统.
- 在预测入侵结果方面,CE-CR框架与现代物种共存理论 (MCT) 之间的一致性仍然未经经验证.
研究的目的:
- 实证地测试CE-CR框架与现代物种共存理论 (MCT) 对入侵结果的预测一致性.
- 调查CE和CR近似是否足够预测跨物种竞争和入侵动态.
- 在预测生物相互作用和入侵成功时,比较定性 (CE-CR) 和定量 (MCT) 方法.
主要方法:
- 进行了5种外来物种和5种本地物种的双对竞争实验.
- 量化竞争效应 (CE) 和竞争响应 (CR) 基于生物质测量,在存在或没有竞争对手的情况下.
- 使用CE-CR框架和现代物种共存理论 (MCT) 预测入侵结果.
主要成果:
- 从理论上证明,通常测量的CE和CR是近似值,不能完全预测入侵结果.
- 在CE-CR和MCT预测之间发现了部分一致性:低CR/高CE外星人倾向于排除本地人,而高CR/低CE外星人通常被排除在外.
- 对稳定的共存和优先效应的预测中观察到的差异,表明CE-CR框架中的局限性.
结论:
- 该CE-CR框架为入侵结果提供了一些预测价值,特别是在没有详细的人口参数的情况下.
- 现代物种共存理论 (MCT) 为理解和预测物种相互作用和入侵动态提供了更强大的和定量化的方法.
- 未来的研究应该优先考虑像MCT这样的定量方法,以全面了解物种相互作用和入侵中的生物结果.
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