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功能维度揭示了非本地鱼类对本地鱼类的影响和生态系统功能
Zhice Liang1,2,3, Donald A Jackson3, Jiashou Liu1,2
1State Key Laboratory of Breeding Biotechnology and Sustainable Aquaculture, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, China.
Global change biology
|September 16, 2025
概括
埃尔海湖的非本地鱼类入侵导致本地鱼类多样性减少,但生态系统多功能性增加. 长期监测揭示了入侵物种和生态系统健康之间的复杂相互作用.
科学领域:
- 生态生态学 生态生态学
- 侵入性物种 生物学 生物学
- 保护科学 保护科学
背景情况:
- 人类活动推动了非本土物种的入侵,导致生物多样性丧失和影响生态系统功能.
- 非本地物种对本地生物多样性和生态系统多功能性的长期影响仍然不太清楚,特别是在功能和植物遗传多样性方面.
研究的目的:
- 评估非本地鱼类对中国埃尔海湖本地鱼类多维多样性的长期影响.
- 调查这些入侵对生态系统多功能性的级联影响,包括生产力和分解.
主要方法:
- 利用来自中国埃尔海湖的80年数据集,分析鱼群结构,功能多样性和植物遗传多样性.
- 非本地和本地鱼类多样性的相关变化与生态系统多功能性指标的趋势.
- 通过融合-分歧-融合框架检查了特征空间和社区模式.
主要成果:
- 随着时间的推移,非本地鱼类的多样性显著增加,而本地鱼类的多样性明显下降.
- 生态系统生产率和平均多功能性显示出显著的上升趋势,与非本地鱼类的功能多样性有积极的相关性.
- 本地鱼类的功能多样性和环境因素与生态系统的多功能性有负面关联.
结论:
- 长期的非本地鱼类入侵会对本地鱼类的多维多样性产生负面影响.
- 虽然非本地物种最初可以增加生态系统的多功能性,但在更高的入侵水平下,这种效应可能会减少.
- 将功能视角纳入生物多样性监测对于管理入侵物种对本地生态系统的影响至关重要.
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