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Valuing the carbon sequestration regulation service by seagrass ecosystems of Palk Bay and Chilika, India
Ganguly, D.; Singh, G.; Purvaja, R.; Bhatta, R.; Paneer Selvam, A.; Banerjee, K.; Ramesh, R. (2018). Valuing the carbon sequestration regulation service by seagrass ecosystems of Palk Bay and Chilika, India. Ocean Coast. Manag. 159: 26-33. https://dx.doi.org/10.1016/j.ocecoaman.2017.11.009
In: Ocean & Coastal Management. Elsevier Science: Barking. ISSN 0964-5691; e-ISSN 1873-524X, meer
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| Trefwoorden |
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| Author keywords |
Seagrass; Carbon sequestration; Carbon storage; Climate mitigation; Social cost of carbon |
| Auteurs | | Top |
- Ganguly, D.
- Singh, G.
- Purvaja, R.
- Bhatta, R.
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- Paneer Selvam, A.
- Banerjee, K.
- Ramesh, R.
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| Abstract |
The regulatory ecosystem services in terms of carbon sequestration and storage by Indian seagrass ecosystems were coupled with their monetary values in the context of climate change mitigation in the seagrass meadows of Palk Bay and Chilika Lagoon, two major seagrass ecosystems of India. The results showed that the meadows acted as a net sink of atmospheric CO2; however, they may also act as a minor source of CO2 to the atmosphere depending on the degree of anthropogenic influence. The mean ecosystem productivity ranged between 6.31 and 11.9 kg C ha−1d−1, which is equivalent to the capture of 8.44 and 15.9 Mg CO2 ha−1 year−1. This captured carbon was apportioned primarily in sediments (129 Mg Corg ha−1 in top 1 m soil), which was much higher than the carbon stored as above and below ground biomass (0.20–0.96 Mg Corg ha−1 and 0.30–2.90 Mg Corg ha−1, respectively). The economic valuation of regulatory ecosystem services in the form of C sequestration by an estimated 51,700 ha of total seagrass cover in India was largely dependent on the sequestration rates and the average social cost of carbon. The estimated values ranged between $ 1.02 million and $ 3.65 million per year. In addition, monetary values of the stored carbon in live biomass of Indian seagrass systems ranged between $ 0.45 million and $ 3.89 million, whereas, in the top 1 m soil it ranged between $ 109 million and $ 146 million. Detailed evaluations of various ecosystem functions considering the importance of the local variables may provide a better monetary estimate of these regulatory services. |
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