Long-term changes in multi-trophic diversity alter the functioning of river food webs

IF 4.6 1区环境科学与生态学 Q1 ECOLOGY Functional Ecology Pub Date : 2024-05-21 DOI:10.1111/1365-2435.14593

Dieison A. Moi, Alejandro D'Anatro, Ivan González-Bergonzoni, Nicolás Vidal, Ivana Silva, Benoit Gauzens, Gustavo Q. Romero, Bradley J. Cardinale, Claudia C. Bonecker, Vítor Carvalho-Rocha, Franco Teixeira de Mello

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多营养级多样性的长期变化改变了河流食物网的功能

人类日益增长的压力威胁着鱼类的多样性，可能对河流食物网的功能造成严重但未知的后果。我们利用多营养鱼类群落 17 年的数据集，研究了人类压力对鱼类多样性和食物网功能的长期影响。结合新陈代谢比例和生态网络原理，我们计算了每年通过营养区（顶级食肉动物、中级食肉动物、食腐动物和杂食动物）的能量通量。能量通量将各营养区系联系起来，从而代表了食物网的功能，如肉食、杂食、草食和吸附。然而，随着时间的推移，物种丰富度下降，整个网络水平的能量通量也下降了75%。人类压力对物种丰富度和能量通量都产生了负面影响。我们的研究结果说明了人类压力是如何降低多样性并侵蚀食物网的能量通量，从而对生态系统功能产生负面影响的。

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来源期刊

Functional Ecology 环境科学-生态学

CiteScore

9.00

自引率

1.90%

发文量

243

审稿时长

4 months

期刊介绍： Functional Ecology publishes high-impact papers that enable a mechanistic understanding of ecological pattern and process from the organismic to the ecosystem scale. Because of the multifaceted nature of this challenge, papers can be based on a wide range of approaches. Thus, manuscripts may vary from physiological, genetics, life-history, and behavioural perspectives for organismal studies to community and biogeochemical studies when the goal is to understand ecosystem and larger scale ecological phenomena. We believe that the diverse nature of our journal is a strength, not a weakness, and we are open-minded about the variety of data, research approaches and types of studies that we publish. Certain key areas will continue to be emphasized: studies that integrate genomics with ecology, studies that examine how key aspects of physiology (e.g., stress) impact the ecology of animals and plants, or vice versa, and how evolution shapes interactions among function and ecological traits. Ecology has increasingly moved towards the realization that organismal traits and activities are vital for understanding community dynamics and ecosystem processes, particularly in response to the rapid global changes occurring in earth’s environment, and Functional Ecology aims to publish such integrative papers.