Modelling blue carbon farming opportunities at different spatial scales
| Autor: | Evan C. Thomas, Nathan J. Waltham, Monica M. Moritsch, Trent Power, Catherine E. Lovelock, Don W. Butler, M D P Costa, Peter I. Macreadie |
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| Rok vydání: | 2022 |
| Předmět: |
0106 biological sciences
Carbon Sequestration Environmental Engineering Marsh 010504 meteorology & atmospheric sciences Management Monitoring Policy and Law Carbon sequestration 010603 evolutionary biology 01 natural sciences Blue carbon Additionality Carbon price Environmental protection 11. Sustainability Ecosystem 14. Life underwater Waste Management and Disposal 0105 earth and related environmental sciences geography geography.geographical_feature_category Carbon offset Agriculture General Medicine 15. Life on land Carbon 13. Climate action Wetlands Spatial ecology Environmental science |
| Zdroj: | Journal of Environmental Management. 301:113813 |
| ISSN: | 0301-4797 |
| Popis: | There is a growing interest in including blue carbon ecosystems (i.e., mangroves, tidal marshes and seagrasses) in climate mitigation programs in national and sub-national policies, with restoration and conservation of these ecosystems identified as potential activities to increase carbon accumulation through time. However, there is still a gap on the spatial scales needed to produce carbon offsets comparable with terrestrial or agricultural ecosystems. Here, we used the Coastal Blue Carbon InVEST 3.7.0 model to estimate future net carbon sequestration in blue carbon ecosystems along Australia's Great Barrier Reef (hereafter GBR) catchments, considering different management scenarios (i.e., reintroduction of tidal exchange through the removal of barriers, sea level rise, restoring low lying land) at three different spatial scales: whole GBR coastline, regional (14,000-16,300 ha), and local (335-370 ha) scales. The focus of the restoration (i.e., tidal marshes and/or mangroves) was dependent on data availability for each scenario. Furthermore, we also estimated the monetary value of carbon sequestration under each management scenario and spatial scale assessed in the study. We found that large scale restoration of tidal marshes could potentially sequester an additional ∼800,000 tonnes of CO2e by 2045 (potentially generating AU$12 million based on the average Australia carbon price), with greater opportunities when sea level rise is accounted for in the modelling. Also, we found that regional and local projects would generate up to 23 tonnes CO2e ha-1 by the end of the crediting period. Our results can guide future decisions in the blue carbon market and financing schemes, however, the return on investment is dependent on the carbon price and funding scheme available for project implementation. |
| Databáze: | OpenAIRE |
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