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Inorganic and black carbon hotspots constrain blue carbon mitigation services across tropical seagrass and temperate tidal marshes [supplementary info]

Created 13/03/2025

Updated 13/03/2025

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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 their pristine counterparts did. 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.

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Title Inorganic and black carbon hotspots constrain blue carbon mitigation services across tropical seagrass and temperate tidal marshes [supplementary info]
Language eng
Licence notspecified
Landing Page https://devweb.dga.links.com.au/data/dataset/9bd28790-78c1-4fea-bdae-e0a70d141dc7
Contact Point
CSIRO Oceans & Atmosphere
JohnBarry.Gallagher@utas.edu.au
Reference Period 01/09/2018 - 01/10/2019
Geospatial Coverage {"type": "Polygon", "coordinates": [[[147.628338307, -43.0789573244], [147.952149332, -43.0789573244], [147.952149332, -42.7274444775], [147.628338307, -42.7274444775], [147.628338307, -43.0789573244]]]}
Data Portal data.gov.au

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This dataset was originally found on data.gov.au "Inorganic and black carbon hotspots constrain blue carbon mitigation services across tropical seagrass and temperate tidal marshes [supplementary info]". Please visit the source to access the original metadata of the dataset:
https://devweb.dga.links.com.au/data/dataset/inorganic-and-black-carbon-hotspots-constrain-blue-carbon-mitigation-services-across-tropical-s

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