Bodega Marine Laboratory, University of California at Davis, Bodega Bay, CA 94923, United States of America; Department of Evolution and Ecology, University of California at Davis, CA 95616, United States of America.
Bodega Marine Laboratory, University of California at Davis, Bodega Bay, CA 94923, United States of America; Department of Evolution and Ecology, University of California at Davis, CA 95616, United States of America.
Mar Pollut Bull. 2019 Sep;146:54-59. doi: 10.1016/j.marpolbul.2019.05.065. Epub 2019 Jun 6.
Toxic chemicals within and adsorbed to microplastics (0.05-5 mm) have the potential to biomagnify in food webs. However, microplastic concentrations in highly productive, coastal habitats are not well understood. Therefore, we quantified the presence of microplastics in a benthic community and surrounding environment of a remote marine reserve on the open coast of California, USA. Concentrations of microplastic particles in seawater were 36.59 plastics/L and in sediments were 0.227 ± 0.135 plastics/g. Densities of microplastics on the surfaces of two morphologically distinct species of macroalgae were 2.34 ± 2.19 plastics/g (Pelvetiopsis limitata) and 8.65 ± 6.44 plastics/g (Endocladia muricata). Densities were highest in the herbivorous snail, Tegula funebralis, at 9.91 ± 6.31 plastics/g, potentially due to bioaccumulation. This study highlights the need for further investigations of the prevalence and potential harm of microplastics in benthic communities at remote locations as well as human population centers.
微塑料（0.05-5 毫米）内及其吸附的有毒化学物质有可能在食物网中生物放大。然而，高生产力的沿海栖息地中的微塑料浓度还不太清楚。因此，我们定量分析了美国加利福尼亚州开阔海岸偏远海洋保护区的海底生物群落及其周围环境中微塑料的存在情况。海水中微塑料颗粒的浓度为 36.59 个/升，沉积物中的浓度为 0.227±0.135 个/克。两种形态不同的大型藻类表面的微塑料密度分别为 2.34±2.19 个/克（Pelvetiopsis limitata）和 8.65±6.44 个/克（Endocladia muricata）。草食性蜗牛 Tegula funebralis 的密度最高，为 9.91±6.31 个/克，这可能是由于生物积累。这项研究强调了需要进一步调查偏远地区以及人类人口中心的海底生物群落中微塑料的普遍性和潜在危害。
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