Organic carbon storage in sediments of seagrass habitats in the lagoons of Lakshadweep Archipelago, west coast of India

Kaladharan, P and Zacharia, P U and Mohammed Koya, K and Lavanya, R and Anasu Koya, A (2022) Organic carbon storage in sediments of seagrass habitats in the lagoons of Lakshadweep Archipelago, west coast of India. Journal of the Marine Biological Association of India, 64 (1). pp. 61-64.

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    Abstract

    Vegetated habitats like mangroves, seagrasses and saltmarshes capture and store carbon and act as carbon sinks. The carbon captured and stored in these habitats, especially in the below-ground sediments, is called blue carbon. We report the blue carbon storage potential of seagrass habitats from the lagoons of Agathi, Bangaram, Kavaratti, Kalpitti, Thinnakara and Parli Islands of the U.T. of Lakshadweep. Sediment core samples were collected in triplicate from 30 cm deep from six stations located in the lagoons and estimated the organic carbon content in the sediment samples. The mean Corg ranged from 0.1863 (Bangaram) to 0.3453% (Thinnakara); while the dry bulk density was 0.9115 (Kalpitti) to 1.1174 g/cm3 (Kavarathi). Of the six Islands studied for blue carbon storage, the Thinnakara lagoon registered the highest level of 0.9795 mgC/ha and the Bangarum lagoon showed the lowest rate of 0.3796 mgC/ ha. Very low organic carbon stock in these lagoons indicated an urgent need for restoring and reviving the seagrass meadows, which are shrinking rapidly.

    Item Type: Article
    Uncontrolled Keywords: Blue carbon stock; carbon sequestration; dry bulk density; island ecosystem; organic carbon
    Subjects: Marine Botany > Seagrass
    Marine Biodiversity
    Divisions: CMFRI-Kochi > Biodiversity
    Subject Area > CMFRI > CMFRI-Kochi > Biodiversity
    CMFRI-Kochi > Biodiversity
    Subject Area > CMFRI-Kochi > Biodiversity
    Depositing User: Arun Surendran
    Date Deposited: 29 Jun 2022 09:27
    Last Modified: 29 Jun 2022 09:27
    URI: http://eprints.cmfri.org.in/id/eprint/16012

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