中文版 | English
Title

Integrated effects of bioturbation, warming and sea-level rise on mobility of sulfide and metalloids in sediment porewater of mangrove wetlands

Author
Corresponding AuthorXiao,Kai
Publication Years
2023-04-15
DOI
Source Title
ISSN
0043-1354
EISSN
1879-2448
Volume233
Abstract
Global warming and sea-level rise exert profound impacts on coastal mangrove ecosystems, where widespread benthic crabs change sediment properties and regulate material cycles. How crab bioturbation perturbs the mobilities of bioavailable arsenic (As), antimony (Sb) and sulfide in sediment-water systems and their variability in response to temperature and sea-level rise is still unknown. By combining field monitoring and laboratory experiments, we found that As was mobilized under sulfidic conditions while Sb was mobilized under oxic conditions in mangrove sediments. Crab burrowing greatly enhanced oxidizing conditions, resulting in enhanced Sb mobilization and release but As sequestration by iron/manganese oxides. In control experiments with non-bioturbation, the more sulfidic conditions triggered the contrasting situation of As remobilization and release but Sb precipitation and burial. Moreover, the bioturbated sediments were highly heterogeneous for spatial distributions of labile sulfide, As and Sb as presented by 2-D high-resolution imaging and Moran's Index (patchy at the <1 cm scale). Warming stimulated stronger burrowing activities, which led to more oxic conditions and further Sb mobilization and As sequestration, whilst sea-level rise did the opposite via suppressing crab burrowing activity. This work highlights that global climate changes have the potential to significantly alter element cycles in coastal mangrove wetlands by regulating benthic bioturbation and redox chemistry.
Keywords
URL[Source Record]
Indexed By
Language
English
Important Publications
NI Journal Papers
SUSTech Authorship
Corresponding
Funding Project
National Natural Science Foundation of China["42106038","42177046"] ; China Post- doctoral Science Foundation[2020M682085]
WOS Research Area
Engineering ; Environmental Sciences & Ecology ; Water Resources
WOS Subject
Engineering, Environmental ; Environmental Sciences ; Water Resources
WOS Accession No
WOS:000953074000001
Publisher
ESI Research Field
ENVIRONMENT/ECOLOGY
Scopus EID
2-s2.0-85149223556
Data Source
Scopus
Citation statistics
Cited Times [WOS]:1
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/513374
DepartmentSchool of Environmental Science and Engineering
Affiliation
1.State Key Laboratory of Marine Environmental Science,College of the Environment & Ecology,Xiamen University,Xiamen,361102,China
2.School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
3.College of Ocean and Earth Sciences,Xiamen University,Xiamen,361102,China
4.Lamont-Doherty Earth Observatory,Columbia University,Palisades,10964,United States
5.Department of Geological Sciences,University of Delaware,Newark,United States
Corresponding Author AffilicationSchool of Environmental Science and Engineering
Recommended Citation
GB/T 7714
Pan,Feng,Xiao,Kai,Cai,Yu,et al. Integrated effects of bioturbation, warming and sea-level rise on mobility of sulfide and metalloids in sediment porewater of mangrove wetlands[J]. WATER RESEARCH,2023,233.
APA
Pan,Feng.,Xiao,Kai.,Cai,Yu.,Li,Hailong.,Guo,Zhanrong.,...&Michael,Holly A..(2023).Integrated effects of bioturbation, warming and sea-level rise on mobility of sulfide and metalloids in sediment porewater of mangrove wetlands.WATER RESEARCH,233.
MLA
Pan,Feng,et al."Integrated effects of bioturbation, warming and sea-level rise on mobility of sulfide and metalloids in sediment porewater of mangrove wetlands".WATER RESEARCH 233(2023).
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