Successful establishment of a coral nursery for active reef restoration in Kavaratti Island, Lakshadweep archipelago

Authors

  • C.A. Riyas Research and Environmental Education Foundation, Agatti Island, UT of Lakshadweep 682553, India. https://orcid.org/0009-0009-3755-1221
  • K.K. Idreesbabu Department of Science and Technology, Kavaratti Island, UT of Lakshadweep 682555, India. https://orcid.org/0000-0002-5070-2401
  • Rajeev Raghavan Department of Fisheries Resource Management, Kerala University of Fisheries and Ocean Studies, Panangad, Kochi, Kerala 682506, India.
  • S. Sureshkumar Faculty of Ocean Science and Technology, Kerala University of Fisheries and Ocean Studies, Panangad, Kochi, Kerala 682506, India.

DOI:

https://doi.org/10.11609/jott.9078.16.9.25831-25842

Keywords:

Acropora, Arabian sea, artificial substrate, atoll, coral fragments, coral nursery, coral reef, Indian Ocean, lagoon, transplantation

Abstract

The achievements in successfully establishing coral nurseries using asexually reproduced transplants in Kavaratti Island, Lakshadweep archipelago are presented. During the present study, the survival and growth of 180 fragments of corals fixed on concrete blocks with iron frames laid over a 40 m2 area near reefs inside the lagoon of Kavaratti atoll were assessed. Significant differences in growth were observed between acroporid and non-acroporid corals after two years of transplantation. Acropora muricata (31.1 ± 0.4 cm) and Isopora palifera (15.9 ± 3.4 cm) displayed the highest and lowest growth rates among acroporid corals and Pocillopora damicornis (481.9 ± 68.4 cm3) and Hydnophora microconos (33.4 ± 15.7 cm3) had the highest and lowest rates, among non-acroporid corals. A diverse fish assemblage comprising 21 species belonging to 10 families was observed at the transplantation site, with Chromis viridis and Dascyllus aruanus being the dominant species. The success achieved in this study makes it an ideal approach to be used elsewhere in the Lakshadweep archipelago and the wider Indian Ocean region to develop underwater tourism and promote science-based management and restoration of coral reefs.

Author Biographies

C.A. Riyas, Research and Environmental Education Foundation, Agatti Island, UT of Lakshadweep 682553, India.

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K.K. Idreesbabu, Department of Science and Technology, Kavaratti Island, UT of Lakshadweep 682555, India.

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Rajeev Raghavan, Department of Fisheries Resource Management, Kerala University of Fisheries and Ocean Studies, Panangad, Kochi, Kerala 682506, India.

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S. Sureshkumar, Faculty of Ocean Science and Technology, Kerala University of Fisheries and Ocean Studies, Panangad, Kochi, Kerala 682506, India.

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26-09-2024

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