Assessing abundance and composition of juvenile corals in marine national parks in the Eastern Gulf of Thailand

Authors

  • Makamas - Sutthacheep Ramkhamhaeng Univerity

Keywords:

abundance, coral recruitment, Gulf of Thailand, management

Abstract

Coral recruitment is an important factor influencing the natural recovery of degraded reefs. This study aimed to quantitatively examine the abundance and composition of juvenile corals from major reef groups in the Eastern Gulf of Thailand. The field studies were carried out at 15 reef sites in Khao Leam Ya - Mu Ko Samet Nation Park, Rayong Province, and Mu Ko Chang Nation Park, Trat Province. The highest density of juvenile corals was found at Ao Lungdum in Mu Ko Samet (37.5 juvenile corals /m2). High densities of juvenile corals were recorded at Ao Lungdum and Ao Kiu Na Nok in Mu Ko Samet and Hin Gurk Ma, Ko Bai Dang, and Ko Yak Yai in Mu Ko Chang, and high dissimilarities were found between and within sites. The dominant juvenile corals were Pocillopora, Porites, Favites, Fungia and Turbinaria. Juvenile corals densities in the study sites are higher than those found in the Andaman Sea, indicating a high recovery potential in the Eastern Gulf of Thailand. In addition, substrate availability and type, coupled with the high sediment load, are important factors controlling juvenile coral density in the Gulf of Thailand. This study provides necessary information for coral reef management plans and coral restoration projects.

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Published

2021-08-31

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Original Articles