Valuing carbon stocks across a tropical lagoon after accounting for black and inorganic carbon: bulk density proxies for monitoring
Total organic carbon (TOC) stocks of seagrass and mangroves across a Southeast Asian lagoon were measured and valued after correcting for black carbon (BC) and calcareous carbon equivalents (PICequiv) in mitigating CO2 emissions, along with sediment dry bulk densities (DBDs), as a cost-effective mea...
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| Format: | Article |
| Language: | English |
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Coastal Education and Research Foundation, Inc.
2020
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| Online Access: | https://eprints.ums.edu.my/id/eprint/26698/1/Valuing%20Carbon%20Stocks%20across%20a%20Tropical%20Lagoon%20after%20Accounting%20for%20Black%20and%20Inorganic%20Carbon.pdf |
| _version_ | 1796910532405493760 |
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| author | John Barry Gallagher Swee, Theng Chew John Madin Anitra Thorhaug |
| author_facet | John Barry Gallagher Swee, Theng Chew John Madin Anitra Thorhaug |
| author_sort | John Barry Gallagher |
| collection | UMS |
| description | Total organic carbon (TOC) stocks of seagrass and mangroves across a Southeast Asian lagoon were measured and valued after correcting for black carbon (BC) and calcareous carbon equivalents (PICequiv) in mitigating CO2 emissions, along with sediment dry bulk densities (DBDs), as a cost-effective means of estimating carbon stock concepts. Overall, seagrass and mangrove TOC densities ranged from 15.3 ± 4.3 and 124.3 ± 21.1 Mg C ha–1, respectively, across the lower lagoon and 175.2 ± 46.9 and 103.2 ± 19.0 Mg C ha–1 for seagrass and 355.0 ± 24.8 and 350.3 ± 35.2 Mg C ha–1 for mangroves across the two upper lagoon branches. Only mangrove biomass made significant additional contributions, ranging from 178.5 ± 62.3 to 120.7 ± 94.8 Mg C ha–1 for lower and upper regions, respectively. The difference between the lagoon's seagrass and mangrove TOC total stock (5.98 ± 0.69 and 390 ± 33.22 Gg C, respectively) was further amplified by the larger mangrove area. When corrected for BC and PICequiv, the carbon stock mitigation service was reduced by a moderate 14.2%. Across the lagoon the sedimentary DBD showed strong (R2 = 0.85, p < 0.001) to moderate (R2 = 0.67, p < 0.001) linear correlations with seagrass and mangrove [TOC], respectively and moderate correlations with seagrass [PIC] (R2 = 0.6, p < 0.001). There was an invariant and relatively constant response to mangrove [PIC] (2.7 ± 0.07 kg m–3). Valuations were worth on average US$0.44 million y–1 over 20 years, and less than the total income of the indigenous custodians (US$1.8 and US$7.4 million y–1). |
| first_indexed | 2024-03-06T03:05:52Z |
| format | Article |
| id | ums.eprints-26698 |
| institution | Universiti Malaysia Sabah |
| language | English |
| last_indexed | 2024-03-06T03:05:52Z |
| publishDate | 2020 |
| publisher | Coastal Education and Research Foundation, Inc. |
| record_format | dspace |
| spelling | ums.eprints-266982021-04-12T02:43:20Z https://eprints.ums.edu.my/id/eprint/26698/ Valuing carbon stocks across a tropical lagoon after accounting for black and inorganic carbon: bulk density proxies for monitoring John Barry Gallagher Swee, Theng Chew John Madin Anitra Thorhaug SH Aquaculture. Fisheries. Angling Total organic carbon (TOC) stocks of seagrass and mangroves across a Southeast Asian lagoon were measured and valued after correcting for black carbon (BC) and calcareous carbon equivalents (PICequiv) in mitigating CO2 emissions, along with sediment dry bulk densities (DBDs), as a cost-effective means of estimating carbon stock concepts. Overall, seagrass and mangrove TOC densities ranged from 15.3 ± 4.3 and 124.3 ± 21.1 Mg C ha–1, respectively, across the lower lagoon and 175.2 ± 46.9 and 103.2 ± 19.0 Mg C ha–1 for seagrass and 355.0 ± 24.8 and 350.3 ± 35.2 Mg C ha–1 for mangroves across the two upper lagoon branches. Only mangrove biomass made significant additional contributions, ranging from 178.5 ± 62.3 to 120.7 ± 94.8 Mg C ha–1 for lower and upper regions, respectively. The difference between the lagoon's seagrass and mangrove TOC total stock (5.98 ± 0.69 and 390 ± 33.22 Gg C, respectively) was further amplified by the larger mangrove area. When corrected for BC and PICequiv, the carbon stock mitigation service was reduced by a moderate 14.2%. Across the lagoon the sedimentary DBD showed strong (R2 = 0.85, p < 0.001) to moderate (R2 = 0.67, p < 0.001) linear correlations with seagrass and mangrove [TOC], respectively and moderate correlations with seagrass [PIC] (R2 = 0.6, p < 0.001). There was an invariant and relatively constant response to mangrove [PIC] (2.7 ± 0.07 kg m–3). Valuations were worth on average US$0.44 million y–1 over 20 years, and less than the total income of the indigenous custodians (US$1.8 and US$7.4 million y–1). Coastal Education and Research Foundation, Inc. 2020 Article PeerReviewed text en https://eprints.ums.edu.my/id/eprint/26698/1/Valuing%20Carbon%20Stocks%20across%20a%20Tropical%20Lagoon%20after%20Accounting%20for%20Black%20and%20Inorganic%20Carbon.pdf John Barry Gallagher and Swee, Theng Chew and John Madin and Anitra Thorhaug (2020) Valuing carbon stocks across a tropical lagoon after accounting for black and inorganic carbon: bulk density proxies for monitoring. Journal of Coastal Research, 36 (5). pp. 1029-1039. ISSN 0749-0208. https://doi.org/10.2112/JCOASTRES-D-19-00127.1 |
| spellingShingle | SH Aquaculture. Fisheries. Angling John Barry Gallagher Swee, Theng Chew John Madin Anitra Thorhaug Valuing carbon stocks across a tropical lagoon after accounting for black and inorganic carbon: bulk density proxies for monitoring |
| title | Valuing carbon stocks across a tropical lagoon after accounting for black and inorganic carbon: bulk density proxies for monitoring |
| title_full | Valuing carbon stocks across a tropical lagoon after accounting for black and inorganic carbon: bulk density proxies for monitoring |
| title_fullStr | Valuing carbon stocks across a tropical lagoon after accounting for black and inorganic carbon: bulk density proxies for monitoring |
| title_full_unstemmed | Valuing carbon stocks across a tropical lagoon after accounting for black and inorganic carbon: bulk density proxies for monitoring |
| title_short | Valuing carbon stocks across a tropical lagoon after accounting for black and inorganic carbon: bulk density proxies for monitoring |
| title_sort | valuing carbon stocks across a tropical lagoon after accounting for black and inorganic carbon bulk density proxies for monitoring |
| topic | SH Aquaculture. Fisheries. Angling |
| url | https://eprints.ums.edu.my/id/eprint/26698/1/Valuing%20Carbon%20Stocks%20across%20a%20Tropical%20Lagoon%20after%20Accounting%20for%20Black%20and%20Inorganic%20Carbon.pdf |
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