Differences in Surface Orientations and Coverage of Epifauna on the Surface of Artificial Reefs in Sirinat National Park, Phuket

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Thanongsak Chanmethakul


After installing an artificial reef is in the process of ecological succession of epifauna organisms that colonize the structure's surface as time increases. The objective of this study was to assess the composition of epifauna organisms on the surface of artificial reefs in Sirinat National Park, Phuket. Two artificial reef stations were selected to assess, which are no. 8 and no. 11. The artificial reef is eight years old. The photo quadrat method has been applied to photograph epifauna on artificial reef surfaces. The data were then analyzed and presented regarding the percentage cover of the epifauna in each group. The results of artificial reef no. 8 and no. 11 found that the epifauna covering the surface of the artificial reef were 32.50±3.05 and 31.25±2.46. There was no difference in the coverage of the epifaunas found at both stations (P=0.846). The dominant groups of epifauna in the study areas are bryozoa, bivalves, and sponges. Other less dominant groups are hydroids, hard corals, barnacles, gorgonians, and barnacles, respectively. The majority covering the vertical rather than the horizontal surface (P<0.001). Most of the surface characteristics of artificial reefs in no. 8 and no. 11 had relatively high sediment coverage, with a mean of 67.50±3.02 and 64.75±2.60. In conclusion, the artificial reefs in this study had low levels of epifauna cover. That may be due to the relatively high sediment on the artificial reef surface.

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Chanmethakul, T. (2022). Differences in Surface Orientations and Coverage of Epifauna on the Surface of Artificial Reefs in Sirinat National Park, Phuket. PKRU SciTech Journal, 6(1), 13–23. Retrieved from https://ph01.tci-thaijo.org/index.php/pkruscitech/article/view/246886
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