An Accumulation of Microplastics in Sediment and Benthic Fauna at Koh Yo, Songkhla Province

Authors

  • Sakarat Pat-iam Prince of Songkla University
  • Bongkot Wichachucherd Kasetsart University
  • Eknarin Rodcharoen Prince of Songkla University

Abstract

Microplastics are recognized as a growing environmental hazard especially in the marine ecosystem. The aims of this study is to quantify and identify microplastics accumulated in the sediment and benthic fauna at Koh Yo, Songkhla, Sediment and benthic fauna samples were collected from 6 stations (3 stations along the shoreline and 3 stations from offshore) around Koh Yo in February 2019. Microscope and Fourier-transform infrared (FTIR) were used for quantity and identification on microplastics from samples. There were totally 6 types of polymer, Polypropylene (PP), Low density polyethylene (LDPE), Alkyd, Polyvinylchloride (PVC), Cotton Polyester blend and Polyester, accumulated around Koh Yo. Cotton Polyester blend was the highest type of microplastic that found in this study. The cluster analysis revealed that similarity percentage of microplastics in sediment between stations was in range of 71.43% – 82.40% and benthic fauna was in range of 71.10% – 99.71%. Canonical correspondent analysis (CCA) showed that a distribution of dominant microplastic types were not directly affected by environmental factors. Songkhla Lagoon especially at Koh Yo is an important fishing and aquaculture area in Thailand. According to this study, there was contamination of microplastics, especially the fiber from laundry process and fishing gears in the benthic fauna and also sediment around               Koh Yo. Keywords : pollution ; Songkhla lagoon ; microplastics ; sediment ; benthic fauna

Author Biographies

Sakarat Pat-iam, Prince of Songkla University

สาขาวิชาวาริชศาตร์และนวัตกรรมการจัดการ คณะทรัพยากรธรรมชาติ และ สาขาความเป็นเลิศการเพาะเลี้ยงสัตว์น้ำอย่างยั่งยืน

Bongkot Wichachucherd, Kasetsart University

Department of Science, Faculty of Liberal Arts and Science 

Eknarin Rodcharoen, Prince of Songkla University

สาขาวิชาวาริชศาตร์และนวัตกรรมการจัดการ คณะทรัพยากรธรรมชาติ และ สาขาความเป็นเลิศการเพาะเลี้ยงสัตว์น้ำอย่างยั่งยืน

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Published

2022-01-18