Taxonomic identity, biodiversity, and antecedent disturbances shape the dimensional stability of stream invertebrates

Taxonomic identity, biodiversity, and antecedent disturbances shape the dimensional stability of stream invertebrates
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分类学特征、生物多样性和先行干扰塑造了河流无脊椎动物的尺寸稳定性

DOI:
10.1002/lol2.10303
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发表时间:
2023
影响因子:
7.8
通讯作者:
Grimm, Nancy B.
Grimm, Nancy B.
中科院分区:
环境科学与生态学2区
文献类型:
--
作者:
Allen, Daniel C.;Gill, Brian A.;Metcalfe, Anya;Bonjour, Sophia;Starr, Scott;Wang, Junna;Valentin, Diana;Grimm, Nancy B.

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“维度稳定性”方法衡量生态稳定性的不同组成部分,以调查它们之间的关系。然而,大多数经验性工作都使用了小规模和短期的实验操作。在这里,我们将这个框架应用于在冬季洪涝和夏季季风季之间采样的溪流大型无脊椎动物的长期观测数据集。我们检验了不同类群之间稳定性指标之间的差异、前期(季风)和即时(冬季)洪水的大小与稳定性指标之间的差异,以及干扰程度和分类丰富度对群落维度稳定性的相对重要性的假设。聚类分析显示了四种不同的稳定性类型,我们发现,前季风期间的洪水强度对稳定性的影响比冬季洪水本身更重要。对于群落水平的维度稳定性,分类丰富度比干扰大小更重要。这项工作表明,非生物和生物因素决定了自然生态系统的维度稳定性。
The “dimensional stability” approach measures different components of ecological stability to investigate how they are related. Yet, most empirical work has used small‐scale and short‐term experimental manipulations. Here, we apply this framework to a long‐term observational dataset of stream macroinvertebrates sampled between the winter flooding and summer monsoon seasons. We test hypotheses that relate variation among stability metrics across different taxa, the magnitude of antecedent (monsoon) and immediate (winter) floods to stability metrics, and the relative importance of disturbance magnitude and taxonomic richness on community dimensional stability. Cluster analysis revealed four distinct stability types, and we found that the magnitude of floods during the prior monsoon was more important in influencing stability than the winter flood itself. For dimensional stability at the community level, taxonomic richness was more important than disturbance magnitude. This work demonstrates that abiotic and biotic factors determine dimensional stability in a natural ecosystem.
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