Coastal acidification and carbon sequestration driven by inorganic carbon export from tidal wetlands
peer reviewed Coastal ecosystems are under threat from ocean acidification. Coastal seawater pH is modified by both uptake of anthropogenic carbon dioxide and biogeochemical processes altering carbonate chemistry. Mangroves and saltmarshes are global biogeochemical hotspots sequestering large amount...
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ftorbi:oai:orbi.ulg.ac.be:2268/303938 2024-04-21T08:09:44+00:00 Coastal acidification and carbon sequestration driven by inorganic carbon export from tidal wetlands Reithmaier G, A Cabral, A Akhand, MJ Bogard, Borges, Alberto S Bouillon, DJ Burdige, M Call, N Chen, X Chen, LC Cotovicz Jr, MJ. Eagle, E Kristensen, KD Kroeger, Z Lu, DT. Maher, ZAWang, K Xiao, YYY Yau, IR Santos FOCUS - Freshwater and OCeanic science Unit of reSearch - ULiège 2023 https://orbi.uliege.be/handle/2268/303938 en eng https://aslo.secure-platform.com/2023/solicitations/12/sessiongallery/954/application/5689 https://orbi.uliege.be/handle/2268/303938 info:hdl:2268/303938 embargoed access http://purl.org/coar/access_right/c_f1cf info:eu-repo/semantics/embargoedAccess 2023 Aquatic Sciences Meeting – ASLO, Palma de Mallorca, Spain [ES], 4-9 June 2023 Life sciences Aquatic sciences & oceanology Sciences du vivant Sciences aquatiques & océanologie conference paper not in proceedings http://purl.org/coar/resource_type/c_18cp info:eu-repo/semantics/conferencePaper peer reviewed 2023 ftorbi 2024-03-27T14:58:15Z peer reviewed Coastal ecosystems are under threat from ocean acidification. Coastal seawater pH is modified by both uptake of anthropogenic carbon dioxide and biogeochemical processes altering carbonate chemistry. Mangroves and saltmarshes are global biogeochemical hotspots sequestering large amounts of carbon in sediments and in the ocean following lateral carbon export (outwelling). Here, we investigate whether mangroves and saltmarshes drive or buffer coastal waters against acidification and quantify the contribution of alkalinity and dissolved inorganic carbon (DIC) outwelling to carbon budgets. Observations from 45 mangroves and 16 saltmarshes worldwide revealed that >70% of tidal wetlands export more DIC than alkalinity, enhancing pH declines of coastal waters. Porewater-derived DIC outwelling (81 ± 47 mmol/m2/d in mangroves and 57 ± 104 mmol/m2/d in saltmarshes) was the major fate of plant production. However, substantial amounts of fixed carbon remain unaccounted for in budgets. Concurrently, alkalinity outwelling was similar or higher than sediment carbon burial and is therefore a significant carbon sequestration mechanism enhancing the overall value of tidal wetlands as a nature-based solution to climate change. Conference Object Ocean acidification University of Liège: ORBi (Open Repository and Bibliography) |
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Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Life sciences Aquatic sciences & oceanology Sciences du vivant Sciences aquatiques & océanologie |
spellingShingle |
Life sciences Aquatic sciences & oceanology Sciences du vivant Sciences aquatiques & océanologie Reithmaier G, A Cabral, A Akhand, MJ Bogard, Borges, Alberto S Bouillon, DJ Burdige, M Call, N Chen, X Chen, LC Cotovicz Jr, MJ. Eagle, E Kristensen, KD Kroeger, Z Lu, DT. Maher, ZAWang, K Xiao, YYY Yau, IR Santos Coastal acidification and carbon sequestration driven by inorganic carbon export from tidal wetlands |
topic_facet |
Life sciences Aquatic sciences & oceanology Sciences du vivant Sciences aquatiques & océanologie |
description |
peer reviewed Coastal ecosystems are under threat from ocean acidification. Coastal seawater pH is modified by both uptake of anthropogenic carbon dioxide and biogeochemical processes altering carbonate chemistry. Mangroves and saltmarshes are global biogeochemical hotspots sequestering large amounts of carbon in sediments and in the ocean following lateral carbon export (outwelling). Here, we investigate whether mangroves and saltmarshes drive or buffer coastal waters against acidification and quantify the contribution of alkalinity and dissolved inorganic carbon (DIC) outwelling to carbon budgets. Observations from 45 mangroves and 16 saltmarshes worldwide revealed that >70% of tidal wetlands export more DIC than alkalinity, enhancing pH declines of coastal waters. Porewater-derived DIC outwelling (81 ± 47 mmol/m2/d in mangroves and 57 ± 104 mmol/m2/d in saltmarshes) was the major fate of plant production. However, substantial amounts of fixed carbon remain unaccounted for in budgets. Concurrently, alkalinity outwelling was similar or higher than sediment carbon burial and is therefore a significant carbon sequestration mechanism enhancing the overall value of tidal wetlands as a nature-based solution to climate change. |
author2 |
FOCUS - Freshwater and OCeanic science Unit of reSearch - ULiège |
format |
Conference Object |
author |
Reithmaier G, A Cabral, A Akhand, MJ Bogard, Borges, Alberto S Bouillon, DJ Burdige, M Call, N Chen, X Chen, LC Cotovicz Jr, MJ. Eagle, E Kristensen, KD Kroeger, Z Lu, DT. Maher, ZAWang, K Xiao, YYY Yau, IR Santos |
author_facet |
Reithmaier G, A Cabral, A Akhand, MJ Bogard, Borges, Alberto S Bouillon, DJ Burdige, M Call, N Chen, X Chen, LC Cotovicz Jr, MJ. Eagle, E Kristensen, KD Kroeger, Z Lu, DT. Maher, ZAWang, K Xiao, YYY Yau, IR Santos |
author_sort |
Reithmaier G, |
title |
Coastal acidification and carbon sequestration driven by inorganic carbon export from tidal wetlands |
title_short |
Coastal acidification and carbon sequestration driven by inorganic carbon export from tidal wetlands |
title_full |
Coastal acidification and carbon sequestration driven by inorganic carbon export from tidal wetlands |
title_fullStr |
Coastal acidification and carbon sequestration driven by inorganic carbon export from tidal wetlands |
title_full_unstemmed |
Coastal acidification and carbon sequestration driven by inorganic carbon export from tidal wetlands |
title_sort |
coastal acidification and carbon sequestration driven by inorganic carbon export from tidal wetlands |
publishDate |
2023 |
url |
https://orbi.uliege.be/handle/2268/303938 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
2023 Aquatic Sciences Meeting – ASLO, Palma de Mallorca, Spain [ES], 4-9 June 2023 |
op_relation |
https://aslo.secure-platform.com/2023/solicitations/12/sessiongallery/954/application/5689 https://orbi.uliege.be/handle/2268/303938 info:hdl:2268/303938 |
op_rights |
embargoed access http://purl.org/coar/access_right/c_f1cf info:eu-repo/semantics/embargoedAccess |
_version_ |
1796950928334520320 |