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Microplastics contamination in natural sea turtle nests at Redang Island, Malaysia

Marine Pollution Bulletin 2024 6 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Aina Arifah Khalid, Nur Izzati Abd Razak, Sabiqah Tuan Anuar, Yusof Shuaib Ibrahim, Mohd Uzair Rusli, Maisarah Jaafar

Summary

This study measured microplastic contamination in natural sea turtle nesting beach sediments at Redang Island, Malaysia, finding microplastics present in all sampled nests. The presence of microplastics raises concerns about potential effects on nest temperature, hatching success, and hatchling development.

Polymers

This study presents the first evidence of microplastics in natural sea turtle nests at Chagar Hutang Turtle Sanctuary (CHTS) on Redang Island, a crucial habitat for green turtles. Microplastics were detected in all studied turtle nests (0-70 cm depth), with a total abundance of 12,270 microplastic items per kg dry weight of sand. Fibers (80.7 %) were the most prevalent shape, primarily black (37.9 %), with a high proportion of small-sized particles (<300-1000 μm), indicating prolonged accumulation and environmental degradation. These microplastics, primarily polyethylene terephthalate (PET) and polyethylene (PE), are likely from fishing nets, food packaging, and textiles. Despite the sanctuary's remote location, it is heavily impacted by microplastics carried by tides and wind, raising concerns about their potential effects on turtle egg incubation. The findings offer critical insights into the impact of microplastics on turtle habitats and underscore the urgent need for conservation efforts to protect green sea turtles in Malaysia.

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