日益加剧的干旱改变了生物多样性与生态系统多功能性之间的关系。
Increasing drying changes the relationship between biodiversity and ecosystem multifunctionality.
作者信息
Li Chaoran, Hou Jun, Kong Ming, Yao Yu, Adyel Tanveer M, Wu Jun, You Guoxiang, Yu Yue, Liu Songqi, Yang Zijun, Miao Lingzhan
机构信息
Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, People's Republic of China.
Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing, 210042, People's Republic of China.
出版信息
NPJ Biofilms Microbiomes. 2025 May 6;11(1):72. doi: 10.1038/s41522-025-00711-z.
Increased drying of rivers under global climate change is leading to biodiversity loss. However, it is not clear whether biodiversity loss affects river functions. In this study, we investigated the changes in biofilm community diversity and functions in an artificial stream after different drying durations. A critical drying duration of around 60 days was found in the microbial composition and functions. Therefore, different drying durations can be divided into short-term drying (0-20 days) and long-term drying (60-130 days) to analyse the effect of biodiversity in terms of ecosystem functions. In summary, the dominant relationship of biodiversity on community stability got uncoupled after long-term drying. Community assembly became dominant in maintaining multifunctionality with increasing drying duration rather than biodiversity as traditionally perceived. This study reveals the importance of community assembly, extending theoretical knowledge of the relationship between biodiversity and ecosystem multifunctionality.
全球气候变化导致河流干涸加剧，正造成生物多样性丧失。然而，生物多样性丧失是否会影响河流功能尚不清楚。在本研究中，我们调查了不同干涸持续时间后人工溪流中生物膜群落多样性和功能的变化。在微生物组成和功能方面发现了约60天的关键干涸持续时间。因此，可将不同的干涸持续时间分为短期干涸（约0 - 20天）和长期干涸（约60 - 130天），以从生态系统功能角度分析生物多样性的影响。总之，长期干涸后生物多样性与群落稳定性之间的主导关系解耦。随着干涸持续时间增加，群落组装在维持多功能性方面变得占主导地位，而非传统认知中的生物多样性。本研究揭示了群落组装的重要性，扩展了生物多样性与生态系统多功能性之间关系的理论知识。
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