Microplastic pollution at Qilianyu, the largest green sea turtle nesting grounds in the northern South China Sea

PeerJ

article

Ting Zhang¹  Liu Lin¹  Deqin Li¹  Jichao Wang¹  Yunteng Liu²  Rui Li¹  Shannan Wu¹  Haitao Shi¹ 

[1] Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University;Marine Protected Area Administration of Sansha City

关键词: Beach sediment;    Chelonia mydas;    Fourier transform infrared spectrometer;    Qilianyu;    Microplastics;    Nesting grounds;   

DOI  :  10.7717/peerj.13536

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

Microplastics, new persistent pollutants, have recently attracted considerable attention. When present in beach sediments, microplastics may adversely affect the nesting and hatching of sea turtles on beaches. In this study, we investigate microplastic pollution at Qilianyu (northeastern Xisha Islands), the largest known nesting ground for green sea turtles (Chelonia mydas) in China. We found that the average abundance of microplastics in the beach surface sediments was 338.44 ± 315.69 thousand pieces·m−3 or 1,353.78 ± 853.68 pieces·m−2, with foam and fragments as the main microplastic type identified. The microplastic particles were categorised as small and were predominantly within the 0.05–1 mm size category. Most microplastic particles were white (71.31%). Polystyrene and polyethylene were found to be the most common forms of plastic present. Microplastic pollution was not only observed on the beach surface but also at the bottom of nests approximately 60 cm may be harmful to the incubation of sea turtle eggs. We suggest removing plastic litter, especially small pieces of plastic, on beaches to reduce the threat of microplastic pollution to marine life, including sea turtles. Furthermore, the foam used in aquaculture should be recovered and replaced before it becomes fragmented due to age. In addition, regional cooperation between stakeholders in the South China Sea should be strengthened to collectively promote the reduction and cleanup of marine litter.

【 授权许可】

CC BY