滤食性双壳贝的物种特征和多样性对绿色和棕色食物网的影响

IF 2.8 2区生物学 Q2 ECOLOGY

Freshwater Biology Pub Date : 2024-06-30 DOI:10.1111/fwb.14293

Megan E. Kubala, Garrett W. Hopper, Irene Sánchez González, Colin R. Jackson, Kevin A. Kuehn, Halvor M. Halvorson, Carla L. Atkinson

引用次数: 0

摘要

在淡水生态系统中，消费者可以通过改变自养和异养微生物的营养供应，在营养循环中发挥巨大作用。消费者释放的营养物质直接支持以初级生产为基础的绿色食物网和以分解为基础的棕色食物网。虽然许多研究都集中在消费者驱动的营养动态对绿色食物网的影响上，但对这些动态对褐色食物网的影响的研究关注较少。淡水贻贝（双壳类：Unionidae）可以主导水生系统中的底栖生物量，因为它们经常密集聚集在一起，形成生物地球化学热点，通过释放营养物质控制生态系统结构和功能。然而，尽管作为滤食者，贻贝在功能上具有相似性，但它们在营养物质排泄和组织化学计量方面却表现出差异，部分原因在于它们的系统发育起源。在这里，我们进行了一个中观宇宙实验，以评估三种系统发育不同的贻贝群落如何单独或共同影响绿色和棕色食物网的组成部分。我们预测，贻贝的存在将通过排泄和生物沉积为自养和异养微生物提供营养和能量，从而在棕色和绿色食物网中引起积极的反应。我们还预测，由于物种组合的化学计量学差异，自下而上的养分供应在不同处理中会有所不同，物种丰富度的增加将通过更高的性状多样性所产生的互补性提高生态系统的功能。我们的研究结果表明，贻贝通过改变自养和异养微生物的营养供应，影响了绿色和棕色食物网的功能。这些影响很可能是由组织养分配比和相应排泄物配比的系统发育限制所驱动的，而系统发育限制会对生态系统过程产生功能性影响。我们的研究强调了测量生态上相似的消费者多样性梯度的多种功能反应的重要性，以获得对水生食物网更全面的认识。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Species identity and diversity of filter-feeding bivalves impact green and brown food webs

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来源期刊

Freshwater Biology 生物-海洋与淡水生物学

CiteScore

5.90

自引率

3.70%

发文量

162

审稿时长

2 months

期刊介绍： Freshwater Biology publishes papers on all aspects of the ecology of inland waters, including rivers and lakes, ground waters, flood plains and other freshwater wetlands. We include studies of micro-organisms, algae, macrophytes, invertebrates, fish and other vertebrates, as well as those concerning whole systems and related physical and chemical aspects of the environment, provided that they have clear biological relevance. Studies may focus at any level in the ecological hierarchy from physiological ecology and animal behaviour, through population dynamics and evolutionary genetics, to community interactions, biogeography and ecosystem functioning. They may also be at any scale: from microhabitat to landscape, and continental to global. Preference is given to research, whether meta-analytical, experimental, theoretical or descriptive, highlighting causal (ecological) mechanisms from which clearly stated hypotheses are derived. Manuscripts with an experimental or conceptual flavour are particularly welcome, as are those or which integrate laboratory and field work, and studies from less well researched areas of the world. Priority is given to submissions that are likely to interest a wide range of readers. We encourage submission of papers well grounded in ecological theory that deal with issues related to the conservation and management of inland waters. Papers interpreting fundamental research in a way that makes clear its applied, strategic or socio-economic relevance are also welcome. Review articles (FRESHWATER BIOLOGY REVIEWS) and discussion papers (OPINION) are also invited: these enable authors to publish high-quality material outside the constraints of standard research papers.