POTENTIAL IMPACTS OF MARINE DEBRIS ON NESTING GREEN SEA TURTLES AT THAMEEHLA ISLAND, MYANMAR*

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Abstract
  • This study conducted on Thameehla Island, a protected and historically significant sea turtle nesting ground during 2023 to January 2024. The study aims to investigate the impact of increasing marine debris pollution on Green Sea Turtle (Chelonia mydas) nesting behaviors and site selection. The island, located in Ngaputaw Township, Ayeyarwady Region and no human settlement on the island, resulting in less human disturbance to sea turtle nesting compared to surrounding regions. However, the island faces challenges such as beach erosion, and reduced nesting success due to the increasing marine debris issue. The research involved collecting marine debris samples along turtle tracks and on the nesting, area using a quadrat sampling method. Statistical analysis, employing the R software package was conducted. A total of 327 debris pieces across two nesting beaches including all study tracks with and without nests, were gathered. The five most abundant categories were piece of plastic (25%), foam (16%), bottles (15%), net fragments (9%), and rope pieces (8%). Remarkably, marine debris was more abundant in areas with turtle nests compared to those without nests. Statistical tests (p-values of 0.008 and 0.004) indicated a significant correlation between marine debris and nesting success or behavior. The findings strongly support the rejection of the null hypothesis, suggesting that increased marine debris adversely affects Green Sea Turtle nesting. The study concludes that removing marine debris from nesting beaches could potentially enhance nesting habitats, nesting success and contribute to the conservation of sea turtle populations.
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  • 21. Ko Myint((205-215).pdf
Year
  • 2025
Author
  • Ko Myint1and Phone Maw2
Subject
  • Zoology, Marine Science, Environment of Water Studies
Publisher
  • Myanmar Academy of Arts and Science (MAAS)

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