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Inorganic and black carbon hotspots constrain blue carbon mitigation services across tropical seagrass and temperate tidal marshes
Citation
Gallagher, JB and Prahalad, V and Aalders, J, Inorganic and black carbon hotspots constrain blue carbon mitigation services across tropical seagrass and temperate tidal marshes, Wetlands, 41 Article 65. ISSN 0277-5212 (2021) [Refereed Article]
Copyright Statement
Copyright Society of Wetland Scientists 2021
DOI: doi:10.1007/s13157-021-01460-3
Abstract
Total organic carbon (TOC) sediment stocks as a CO2 mitigation service require exclusion of allochthonous black (BC) and particulate inorganic carbon corrected for water–atmospheric equilibrium (PICeq). For the first time, we address this bias for a temperate salt marsh and a coastal tropical seagrass in BC hotspots that represent two different blue carbon ecosystems of Malaysia and Australia. Seagrass TOC stocks were similar to the salt marshes with soil depths < 1 m (59.3 ± 11.3 and 74.9 ± 18.9 MgC ha− 1, CI 95 % respectively). Both ecosystems showed larger BC constraints than did their pristine counterparts. However, the seagrass meadows’ mitigation services were largely constrained by both higher BC/TOC and PICeq/TOC fractions (38.0 % ± 6.6 and 43.4 % ± 5.9 %, CI 95 %) and salt marshes around a third (22 % ± 10.2 and 6.0 % ± 3.1 % CI 95 %). The results provide useful data from underrepresented regions, and, reiterates the need to consider both BC and PIC for more reliable blue carbon mitigation assessments to ensure that greenhouse gas emitters do not exceed the ecosystems’ capacity.
Item Details
Item Type: | Refereed Article |
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Keywords: | seagrass, saltmarsh, blue carbon, black carbon, inorganic carbon, pyrogenic carbon, particulate inorganic carbon, carbon sequestration, Tasmania, Southeast Asia |
Research Division: | Environmental Sciences |
Research Group: | Climate change impacts and adaptation |
Research Field: | Carbon sequestration science |
Objective Division: | Environmental Policy, Climate Change and Natural Hazards |
Objective Group: | Mitigation of climate change |
Objective Field: | Climate change mitigation strategies |
UTAS Author: | Gallagher, JB (Dr John Barry Gallagher) |
UTAS Author: | Prahalad, V (Dr Vishnu Prahalad) |
UTAS Author: | Aalders, J (Mr John Aalders) |
ID Code: | 144654 |
Year Published: | 2021 |
Web of Science® Times Cited: | 1 |
Deposited By: | Oceans and Cryosphere |
Deposited On: | 2021-06-02 |
Last Modified: | 2021-10-14 |
Downloads: | 0 |
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