摘要

我们在塞浦路斯为log龟（Caretta caretta）和绿海龟（Chelonia mydas）采集了17个筑巢地点。在所有位置和深度都发现了微塑料（<5mm），在浅表砂中具有特别高的丰度。顶部2cm的砂呈现出平均±SD颗粒计数为45,497±11,456个颗粒m-3（范围637-131,939颗粒m-3）。受污染最严重的海滩是迄今为止记录的最差海滩之一，其水平接近先前在中国南方广东省记录的水平。微塑料随着沙子深度的增加而减少，但存在深度为60cm的龟巢深度（平均为5,325±3,663粒子-3）。海滩中的成分不同，但硬碎片（46.5±3.5％）和产前障碍（47.8±4.5％）大多数塑料可能来自东地中海盆地，微观弹性丰度可能导致人为改变的生活史参数，如孵化成功率和海龟性别比例。

We sampled 17 nesting sites for loggerhead (Caretta caretta) and green turtles (Chelonia mydas) in Cyprus. Microplastics (<5 mm) were found at all locations and depths, with particularly high abundance in superficial sand. The top 2 cm of sand presented grand mean ± SD particle counts of 45,497 ± 11,456 particles m-3 (range 637-131,939 particles m-3). The most polluted beaches were among the worst thus far recorded, presenting levels approaching those previously recorded in Guangdong, South China. Microplastics decreased with increasing sand depth but were present down to turtle nest depths of 60 cm (mean 5,325 ± 3,663 particles m-3. Composition varied among beaches but hard fragments (46.5 ± 3.5%) and pre-production nurdles (47.8 ± 4.5%) comprised most categorised pieces. Particle drifter analysis hindcast for 365 days indicated that most plastic likely originated from the eastern Mediterranean basin. Worsening microplastic abundance could result in anthropogenically altered life history parameters such as hatching success and sex ratios in marine turtles.

https://www.ncbi.nlm.nih.gov/pubmed/30509815