Soil nematode metacommunities in different land covers: Assessment at the local and regional scales

Author:

Niu Ximei1ORCID,Wang Ping12ORCID,Xie Zhijing12ORCID,Gao Meixiang3ORCID,Qian Siru1ORCID,Saifutdinov Ruslan4ORCID,Aspe Nonillon M.5ORCID,Wu Donghui126ORCID,Guan Pingting12ORCID

Affiliation:

1. State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment Northeast Normal University Changchun China

2. Key Laboratory of Vegetation Ecology, Ministry of Education Northeast Normal University Changchun China

3. Department of Geography and Spatial Information Techniques Ningbo University Ningbo China

4. Laboratory for Soil Ecological Functions A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences Moscow Russia

5. College of Marine and Allied Sciences Mindanao State University at Naawan Naawan Philippines

6. Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology Chinese Academy of Sciences Changchun China

Abstract

AbstractThe metacommunity theory enhances our understanding of how ecological processes regulate community structure. Yet, unraveling the complexities of soil nematode metacommunity structures across various spatial scales and determining the factors influencing these patterns remains challenging. Therefore, we conducted an investigation on soil nematode metacommunities spanning from north to south in the Northeastern China. Our aim was to test whether nematode metacommunities were structured by different drivers under three land covers (i.e., farmland, grassland and woodland) at the local and regional scales. The results revealed that the Clementsian, Gleasonian and their quasi‐structures of soil nematodes collectively accounted for 93% of the variation across the three land covers at the local and regional scales. These structures suggest that the soil nematode metacommunities in the Northeast China responded to fluctuations in environmental gradients. At the local scale, metacommunities were primarily shaped by biological interactions. At the regional scale, environmental heterogeneity, dispersal limitation and biological interactions all contributed to nematode metacommunities. Meanwhile, biological interactions under three land covers were represented within different trophic groups, with plant parasites predominant in farmlands and bacterivores in grasslands and woodlands. In conclusion, the metacommunity structures of soil nematodes remain stable at different spatial scales and land covers. Biological interactions are widespread among nematodes regardless of changes in spatial scales and land covers. This study reveals the importance of nematode sensitivity to the environment and biological interactions in shaping the nematode metacommunities, potentially enhancing our understanding of the spatial patterns of nematode metacommunities.

Funder

National Key Research and Development Program of China

Publisher

Wiley

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