Soil fungal diversity and community assembly: Affected by island size or type?

This is a Preprint and has not been peer reviewed. The published version of this Preprint is available: https://doi.org/10.1093/femsec/fiab062. This is version 2 of this Preprint.

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Authors

Yong Zheng, Pulak Maitra, Hui-Yun Gan, Liang Chen, Shengchun Li, Tieyao Tu, Lei Chen, Xiangcheng Mi, Cheng Gao, Dianxiang Zhang

Abstract

Fungi have huge biodiversity and play important roles in soil biogeochemical cycling and ecosystem services in island ecosystems. Although island biogeography has been widely studied in macroorganisms, the relationship between soil fungal diversity and area in islands is less documented. Here, we examine soil fungal communities of 18 oceanic islands belonged to two types of islands (8 general islands in Wanshan and 10 coral islands in Xisha) in South China Sea through Illumina Miseq sequencing techniques. Our results showed that soil fungal α-diversity (species richness) was significantly different among the oceanic islands, with a higher value in Wanshan than in Xisha islands. Soil fungal α-diversity was significantly affected by soil potassium and magnesium (Mg) and plant community in Wanshan islands but by soil Mg in Xisha islands. Soil fungal community composition was significantly different in Wanshan and Xisha islands and influenced by soil, plant community and spatial distance. Ecological stochasticity model showed that the fungal community assembly was mainly structured by deterministic process regardless of island types. The fungal β-diversity (community turnover), but not α-diversity was significantly increased with increasing island area. Our findings may have implications for better predicting soil fungal community dynamics in island systems and for enhancing insight into microbial biodiversity conservation.

DOI

https://doi.org/10.32942/osf.io/xk57q

Subjects

Biodiversity, Ecology and Evolutionary Biology, Environmental Microbiology and Microbial Ecology Life Sciences, Life Sciences, Microbiology, Terrestrial and Aquatic Ecology

Keywords

community assembly, community composition, deterministic process, island, soil fungi, species-area relationship, α-diversity, β-diversity

Dates

Published: 2021-01-27 00:15

Last Updated: 2021-03-02 02:53

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License

CC-By Attribution-ShareAlike 4.0 International

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Data and Code Availability Statement:
Please contact with the corresponding author.

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