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Composition and assembly of soil bacterial communities between tidal saltwater and freshwater marshes in China

Pengfei Zhan, Hang Wang, Kam Tang Orcid Logo, Josep Penuelas, Jiafang Huang, Na Liu, Chuan Tong

Applied Soil Ecology, Volume: 201, Start page: 105508

Swansea University Author: Kam Tang Orcid Logo

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DOI (Published version): 10.1016/j.apsoil.2024.105508

Abstract

With the increasing salinization of coastal lowlands due to sea level rise, a comprehensive assessment of salinity effects on soil microbial community is crucial for understanding and predicting the corresponding shifts in ecological processes. We compared topsoil bacterial samples from tidal saltwa...

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Published in: Applied Soil Ecology
ISSN: 0929-1393
Published: Elsevier BV 2024
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URI: https://cronfa.swan.ac.uk/Record/cronfa66969
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spelling v2 66969 2024-07-05 Composition and assembly of soil bacterial communities between tidal saltwater and freshwater marshes in China 69af43a3b9da24aef65c5d3a44956fe3 0000-0001-9427-9564 Kam Tang Kam Tang true false 2024-07-05 BGPS With the increasing salinization of coastal lowlands due to sea level rise, a comprehensive assessment of salinity effects on soil microbial community is crucial for understanding and predicting the corresponding shifts in ecological processes. We compared topsoil bacterial samples from tidal saltwater and freshwater marshes, both dominated by Phragmites australis, in six main estuaries along the tropical-subtropical gradient in China. The bacterial communities in both saltwater and freshwater marshes had similar niche breadths, suggesting similar ability to exploit resources. Salinity difference limited the exchange of bacteria between the two habitats, with only 8.9 % of operational taxonomic units shared between the two communities. Network analysis suggested that the average path length was shorter in the saltwater marshes than the freshwater marshes, and the higher negative cohesion in saltwater marsh networks would enhance the network stability. The assembly of both communities was mostly stochastic, but freshwater marsh communities demonstrated a stronger diffusion restriction than saltwater counterparts. These results suggest that increasing salinization of coastal lowlands will alter the taxonomic and network characteristics of soil microbes, especially in the tidal freshwater marsh, but the stochastic nature of the assembly suggests that the changes may be irreversible. Journal Article Applied Soil Ecology 201 105508 Elsevier BV 0929-1393 Salinity, Tidal marshes, Community assembly, Network analysis 1 9 2024 2024-09-01 10.1016/j.apsoil.2024.105508 COLLEGE NANME Biosciences Geography and Physics School COLLEGE CODE BGPS Swansea University This work was financially supported by grants from the National Natural Science Foundation of China (No. 41877335 and 42177213 ) and the National Key Research and Development Program of China (No. 2022YFC3105401 ). JP was funded by the Spanish Government Grant PID2019-110521GB-I00 , the Catalan government grant SGR2017-1005 and the Fundación Ramón Areces grant CIVP20A6621. 2024-09-12T14:30:53.7616796 2024-07-05T15:11:16.1028446 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Pengfei Zhan 1 Hang Wang 2 Kam Tang 0000-0001-9427-9564 3 Josep Penuelas 4 Jiafang Huang 5 Na Liu 6 Chuan Tong 7
title Composition and assembly of soil bacterial communities between tidal saltwater and freshwater marshes in China
spellingShingle Composition and assembly of soil bacterial communities between tidal saltwater and freshwater marshes in China
Kam Tang
title_short Composition and assembly of soil bacterial communities between tidal saltwater and freshwater marshes in China
title_full Composition and assembly of soil bacterial communities between tidal saltwater and freshwater marshes in China
title_fullStr Composition and assembly of soil bacterial communities between tidal saltwater and freshwater marshes in China
title_full_unstemmed Composition and assembly of soil bacterial communities between tidal saltwater and freshwater marshes in China
title_sort Composition and assembly of soil bacterial communities between tidal saltwater and freshwater marshes in China
author_id_str_mv 69af43a3b9da24aef65c5d3a44956fe3
author_id_fullname_str_mv 69af43a3b9da24aef65c5d3a44956fe3_***_Kam Tang
author Kam Tang
author2 Pengfei Zhan
Hang Wang
Kam Tang
Josep Penuelas
Jiafang Huang
Na Liu
Chuan Tong
format Journal article
container_title Applied Soil Ecology
container_volume 201
container_start_page 105508
publishDate 2024
institution Swansea University
issn 0929-1393
doi_str_mv 10.1016/j.apsoil.2024.105508
publisher Elsevier BV
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences
document_store_str 0
active_str 0
description With the increasing salinization of coastal lowlands due to sea level rise, a comprehensive assessment of salinity effects on soil microbial community is crucial for understanding and predicting the corresponding shifts in ecological processes. We compared topsoil bacterial samples from tidal saltwater and freshwater marshes, both dominated by Phragmites australis, in six main estuaries along the tropical-subtropical gradient in China. The bacterial communities in both saltwater and freshwater marshes had similar niche breadths, suggesting similar ability to exploit resources. Salinity difference limited the exchange of bacteria between the two habitats, with only 8.9 % of operational taxonomic units shared between the two communities. Network analysis suggested that the average path length was shorter in the saltwater marshes than the freshwater marshes, and the higher negative cohesion in saltwater marsh networks would enhance the network stability. The assembly of both communities was mostly stochastic, but freshwater marsh communities demonstrated a stronger diffusion restriction than saltwater counterparts. These results suggest that increasing salinization of coastal lowlands will alter the taxonomic and network characteristics of soil microbes, especially in the tidal freshwater marsh, but the stochastic nature of the assembly suggests that the changes may be irreversible.
published_date 2024-09-01T14:30:53Z
_version_ 1809997211780513792
score 11.036116

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