Riparian forests shape trophic interactions in detrital stream food webs

IF 4.6 1区环境科学与生态学 Q1 ECOLOGY Functional Ecology Pub Date : 2024-08-30 DOI:10.1111/1365-2435.14639

Rebecca Oester, Florian Altermatt, Andreas Bruder

引用次数: 0

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河岸林塑造了溪流食物网中的营养相互作用

淡水和陆地生物多样性通过空间资源流联系在一起。主要的例子是河岸植被提供的碎屑补贴，这些碎屑补贴构成了小溪流食物网的基础。尽管食腐动物在这些食物网中扮演着核心角色，但人们对改变河岸植被类型和资源可用性对其营养策略的影响知之甚少。因此，我们通过实验测试了河岸植被类型（即有河岸林与无河岸林）对水生食腐动物营养相互作用和食物不平衡的直接和间接影响。为了描述营养策略的特征，我们使用了消费者和资源之间的化学计量和同位素差异，作为溪流分解者和食腐动物自然定殖的落叶袋中营养联系强度的功能测量指标。我们的研究结果表明，河岸森林的缺失影响了溪流碎屑食物网的化学计量和同位素特性。在没有河岸林的地方，叶屑的 C:N 比率较低，只有毛翅目分解者反映了这一点，而褶翅目和甲壳类分解者的同位素特征则有所不同。资源与消费者之间的模式差异可能会导致能量流路径的重构，并削弱水生食腐动物与陆生食腐动物之间的耦合。因此，我们的研究结果表明，河岸森林对水生食物网至关重要，它不仅影响生物本身，还影响其营养相互作用和能量流动路径。依赖陆地补贴的水生食腐动物对其资源环境的局部变化非常敏感。因此，受体系统中资源与消费者之间的功能差异模式凸显了供体系统的生境特性如何影响跨生态系统边界连接的食物网。在期刊博客上免费阅读本文的通俗摘要。

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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.