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Effects of landscape modification on coastal sediment nitrogen availability, microbial functional gene abundances and N2O production potential across the tropical-subtropical gradient

Ping Yang Orcid Logo, Kam Tang Orcid Logo, Linhai Zhang, Xiao Lin, Hong Yang, Chuan Tong, Yan Hong, Lishan Tan, Derrick Y.F. Lai Orcid Logo, Yalan Tian, Wanyi Zhu, Manjing Ruan, Yongxin Lin Orcid Logo

Environmental Research, Volume: 227, Start page: 115829

Swansea University Author: Kam Tang Orcid Logo

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DOI (Published version): 10.1016/j.envres.2023.115829

Abstract

Wetland sediment is an important nitrogen pool and a source of the greenhouse gas nitrous oxide (N2O). Modification of coastal wetland landscape due to plant invasion and aquaculture activities may drastically change this N pool and the related dynamics of N2O. This study measured the sediment prope...

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Published in: Environmental Research
ISSN: 0013-9351
Published: Elsevier BV 2023
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URI: https://cronfa.swan.ac.uk/Record/cronfa63057
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This study measured the sediment properties, N2O production and relevant functional gene abundances in 21 coastal wetlands across five provinces along the tropical-subtropical gradient in China, which all had experienced the same sequence of habitat transformation from native mudflats (MFs) to invasive Spartina alterniflora marshes (SAs) and subsequently to aquaculture ponds (APs). Our results showed that change from MFs to SAs increased the availability of NH4+-N and NO3−-N and the abundance of functional genes related to N2O production (amoA, nirK, nosZ Ⅰ, and nosZ Ⅱ), whereas conversion of SAs to APs resulted in the opposite changes. Invasion of MFs by S. alterniflora increased N2O production potential by 127.9%, whereas converting SAs to APs decreased it by 30.4%. Based on structural equation modelling, nitrogen substrate availability and abundance of ammonia oxidizers were the key factors driving the change in sediment N2O production potential in these wetlands. This study revealed the main effect patterns of habitat modification on sediment biogeochemistry and N2O production across a broad geographical and climate gradient. 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spelling v2 63057 2023-04-03 Effects of landscape modification on coastal sediment nitrogen availability, microbial functional gene abundances and N2O production potential across the tropical-subtropical gradient 69af43a3b9da24aef65c5d3a44956fe3 0000-0001-9427-9564 Kam Tang Kam Tang true false 2023-04-03 BGPS Wetland sediment is an important nitrogen pool and a source of the greenhouse gas nitrous oxide (N2O). Modification of coastal wetland landscape due to plant invasion and aquaculture activities may drastically change this N pool and the related dynamics of N2O. This study measured the sediment properties, N2O production and relevant functional gene abundances in 21 coastal wetlands across five provinces along the tropical-subtropical gradient in China, which all had experienced the same sequence of habitat transformation from native mudflats (MFs) to invasive Spartina alterniflora marshes (SAs) and subsequently to aquaculture ponds (APs). Our results showed that change from MFs to SAs increased the availability of NH4+-N and NO3−-N and the abundance of functional genes related to N2O production (amoA, nirK, nosZ Ⅰ, and nosZ Ⅱ), whereas conversion of SAs to APs resulted in the opposite changes. Invasion of MFs by S. alterniflora increased N2O production potential by 127.9%, whereas converting SAs to APs decreased it by 30.4%. Based on structural equation modelling, nitrogen substrate availability and abundance of ammonia oxidizers were the key factors driving the change in sediment N2O production potential in these wetlands. This study revealed the main effect patterns of habitat modification on sediment biogeochemistry and N2O production across a broad geographical and climate gradient. These findings will help large-scale mapping and assessing landscape change effects on sediment properties and greenhouse gas emissions along the coast. Journal Article Environmental Research 227 115829 Elsevier BV 0013-9351 Coastal wetland, Habitat change, Nitrogen remineralization, Nitrogen substrates, N2O production Potential, Ammonia oxidation 1 6 2023 2023-06-01 10.1016/j.envres.2023.115829 COLLEGE NANME Biosciences Geography and Physics School COLLEGE CODE BGPS Swansea University Not Required This research was supported by the Natural Science Foundation of Fujian Province, China (Grant No. 2020J01136, and 2022R1002006), the National Natural Science Foundation of China (NSFC) (Grant No. 41801070, and No. 41671088), and the Research Grants Council of the Hong Kong Special Administrative Region, China (Project No. CUHK 14122521). 2024-07-29T13:58:16.8584314 2023-04-03T08:12:11.8112005 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Ping Yang 0000-0002-5212-6065 1 Kam Tang 0000-0001-9427-9564 2 Linhai Zhang 3 Xiao Lin 4 Hong Yang 5 Chuan Tong 6 Yan Hong 7 Lishan Tan 8 Derrick Y.F. Lai 0000-0002-1225-9904 9 Yalan Tian 10 Wanyi Zhu 11 Manjing Ruan 12 Yongxin Lin 0000-0002-0305-5766 13 63057__26961__110173261d1b4f3ea4c6a12b5f5f3a3f.pdf EnvRes_authorsfinal.pdf 2023-04-03T08:14:18.0688564 Output 13503991 application/pdf Accepted Manuscript true 2024-04-01T00:00:00.0000000 false eng
title Effects of landscape modification on coastal sediment nitrogen availability, microbial functional gene abundances and N2O production potential across the tropical-subtropical gradient
spellingShingle Effects of landscape modification on coastal sediment nitrogen availability, microbial functional gene abundances and N2O production potential across the tropical-subtropical gradient
Kam Tang
title_short Effects of landscape modification on coastal sediment nitrogen availability, microbial functional gene abundances and N2O production potential across the tropical-subtropical gradient
title_full Effects of landscape modification on coastal sediment nitrogen availability, microbial functional gene abundances and N2O production potential across the tropical-subtropical gradient
title_fullStr Effects of landscape modification on coastal sediment nitrogen availability, microbial functional gene abundances and N2O production potential across the tropical-subtropical gradient
title_full_unstemmed Effects of landscape modification on coastal sediment nitrogen availability, microbial functional gene abundances and N2O production potential across the tropical-subtropical gradient
title_sort Effects of landscape modification on coastal sediment nitrogen availability, microbial functional gene abundances and N2O production potential across the tropical-subtropical gradient
author_id_str_mv 69af43a3b9da24aef65c5d3a44956fe3
author_id_fullname_str_mv 69af43a3b9da24aef65c5d3a44956fe3_***_Kam Tang
author Kam Tang
author2 Ping Yang
Kam Tang
Linhai Zhang
Xiao Lin
Hong Yang
Chuan Tong
Yan Hong
Lishan Tan
Derrick Y.F. Lai
Yalan Tian
Wanyi Zhu
Manjing Ruan
Yongxin Lin
format Journal article
container_title Environmental Research
container_volume 227
container_start_page 115829
publishDate 2023
institution Swansea University
issn 0013-9351
doi_str_mv 10.1016/j.envres.2023.115829
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 1
active_str 0
description Wetland sediment is an important nitrogen pool and a source of the greenhouse gas nitrous oxide (N2O). Modification of coastal wetland landscape due to plant invasion and aquaculture activities may drastically change this N pool and the related dynamics of N2O. This study measured the sediment properties, N2O production and relevant functional gene abundances in 21 coastal wetlands across five provinces along the tropical-subtropical gradient in China, which all had experienced the same sequence of habitat transformation from native mudflats (MFs) to invasive Spartina alterniflora marshes (SAs) and subsequently to aquaculture ponds (APs). Our results showed that change from MFs to SAs increased the availability of NH4+-N and NO3−-N and the abundance of functional genes related to N2O production (amoA, nirK, nosZ Ⅰ, and nosZ Ⅱ), whereas conversion of SAs to APs resulted in the opposite changes. Invasion of MFs by S. alterniflora increased N2O production potential by 127.9%, whereas converting SAs to APs decreased it by 30.4%. Based on structural equation modelling, nitrogen substrate availability and abundance of ammonia oxidizers were the key factors driving the change in sediment N2O production potential in these wetlands. This study revealed the main effect patterns of habitat modification on sediment biogeochemistry and N2O production across a broad geographical and climate gradient. These findings will help large-scale mapping and assessing landscape change effects on sediment properties and greenhouse gas emissions along the coast.
published_date 2023-06-01T13:58:15Z
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