Large-Scale Variation in Biodiversity–Ecosystem Functioning (BEF) Relationships in Aquatic Metacommunities on Terrestrial Islands

IF 6 1区环境科学与生态学 Q1 ECOLOGY

Global Ecology and Biogeography Pub Date : 2025-08-05 DOI:10.1111/geb.70100

Joren M. Snoeks, Aranya Pathak-Broome, James G. Hagan, Bram Vanschoenwinkel

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引用次数: 0

Abstract

Aim

Recent work has shown that the biodiversity of potential colonists in a landscape (the local species pool) may be more important for ecosystem functioning than the biodiversity in local habitat patches. However, it is unknown how such biodiversity–ecosystem functioning (BEF) relationships may change across different biomes. To explore such patterns, nested insular ecosystems where variation in local biodiversity and local species pool biodiversity can be reliably quantified can provide important insights.

Location

Rock pool metacommunities on isolated rocky outcrops (i.e., inselbergs) in Africa, Australia, Europe, and North America.

Time Period

Sampling: 2011–2019.

Major Taxa Studied

Freshwater invertebrates.

Methods

We assembled a large-scale dataset of invertebrate metacommunities from replicated rock pool clusters on inselbergs as a model system to test the ability of local biodiversity and local species pool biodiversity to explain community biomass in organisms with different survival strategies (active or passive dispersers). To test our hypotheses, we used a combination of directed acrylic graph-based path analyses and general linear mixed-effects models.

Results

The biodiversity of the local species pool was influenced by climate but did not significantly impact community biomass. Instead, local environmental gradients seem to override any species pool effects on community biomass. However, in line with expectations, the relationship between local biodiversity and biomass varied across inselbergs. Contrary to expectations, inselberg prominence did not influence the BEF slope. However, in drier conditions, the BEF relationship weakened for active dispersers, likely reflecting environmental limits on recolonisation. Thus, climate and dispersal strategy jointly shaped how biodiversity influenced community biomass.

Main Conclusion

This study illustrates that even in a simple ecosystem there can be substantial geographical variation in the relationship between biodiversity and ecosystem functioning that may be partially explained by environmental conditions and by the survival strategy of the organisms considered.

查看原文本刊更多论文

陆地岛屿水生元群落生物多样性-生态系统功能（BEF）关系的大尺度变化

最近的研究表明，景观中潜在殖民者（当地物种池）的生物多样性可能比当地栖息地斑块的生物多样性对生态系统功能更重要。然而，目前尚不清楚这种生物多样性-生态系统功能（BEF）关系如何在不同的生物群系中发生变化。为了探索这种模式，可以可靠地量化当地生物多样性和当地物种池生物多样性变化的巢状岛屿生态系统可以提供重要的见解。在非洲，澳大利亚，欧洲和北美的孤立的岩石露头（即，inselberg）上定位岩石池元群落。采样时间：2011-2019年。主要分类群研究淡水无脊椎动物。方法利用大型无脊椎动物元群落数据集作为模型系统，测试本地生物多样性和本地物种池生物多样性对不同生存策略（主动或被动分散器）生物群落生物量的解释能力。为了验证我们的假设，我们结合了定向丙烯酸图路径分析和一般线性混合效应模型。结果当地物种库的生物多样性受气候的影响，但对群落生物量影响不显著。相反，局部环境梯度似乎超越了任何物种池对群落生物量的影响。然而，与预期一致的是，当地生物多样性和生物量之间的关系在不同的群落中有所不同。与预期相反，inselberg的显著性并没有影响BEF斜率。然而，在干燥条件下，主动分散剂的BEF关系减弱，可能反映了环境对再定居的限制。因此，气候和扩散策略共同决定了生物多样性对群落生物量的影响。本研究表明，即使在一个简单的生态系统中，生物多样性与生态系统功能之间的关系也可能存在实质性的地理差异，这可能部分地由环境条件和所考虑的生物的生存策略来解释。

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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来源期刊

Global Ecology and Biogeography 环境科学-生态学

CiteScore

12.10

自引率

3.10%

发文量

170

审稿时长

3 months

期刊介绍： Global Ecology and Biogeography (GEB) welcomes papers that investigate broad-scale (in space, time and/or taxonomy), general patterns in the organization of ecological systems and assemblages, and the processes that underlie them. In particular, GEB welcomes studies that use macroecological methods, comparative analyses, meta-analyses, reviews, spatial analyses and modelling to arrive at general, conceptual conclusions. Studies in GEB need not be global in spatial extent, but the conclusions and implications of the study must be relevant to ecologists and biogeographers globally, rather than being limited to local areas, or specific taxa. Similarly, GEB is not limited to spatial studies; we are equally interested in the general patterns of nature through time, among taxa (e.g., body sizes, dispersal abilities), through the course of evolution, etc. Further, GEB welcomes papers that investigate general impacts of human activities on ecological systems in accordance with the above criteria.