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<p>Sampling and analysis of microplastics (MPs) were conducted along five transects in the Boka Kotorska Bay (southern Adriatic Sea) in October 2023. The transects were strategically selected to capture the influence of one of the most significant cruise ship ports in the Adriatic (the Port of Kotor), an area with substantial freshwater inflows, and the impact of open sea waters. Surface water samples were collected using a Manta trawl. The number and types of polymers were identified using optical microscopy and FTIR spectroscopy. MPs were present in all samples. There was statistical significant difference in the distribution of plastic polymers between the transects (<i>χ</i><sup>2</sup> = 16.87, <i>p</i> &lt; 0.05). Higher MP concentrations were observed near municipal wastewater outlets and in the vicinity of the port. Floating MP abundance ranged from 0.03291 to 0.25126 items/m<sup>2</sup>, with an average value of 0.116847 items/m<sup>2</sup>. The collected MPs were predominantly filaments and fragments, primarily composed of polyethylene and polypropylene. The data obtained in this study are crucial for evaluating the extent of MPs pollution and assessing the environmental risks posed by plastic particles. The results indicate substantial MPs contamination, ranging from 0.7 to 5.6 times above baseline values and between 38 to 210 times higher than the threshold levels recommended for the Mediterranean Sea.</p>

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Floating microplastics in semi-enclosed Boka Kotorska Bay (southern Adriatic Sea)

  • 期刊论文

  • 发表日期：

    2026年7月2日

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  • Milica Mandić,
  • Ines Kokić,
  • Slađana Nikolić,
  • Nataša Stipanelov Vradenčić,
  • Ana Pešić,
  • Mirko Đurović

摘要

Sampling and analysis of microplastics (MPs) were conducted along five transects in the Boka Kotorska Bay (southern Adriatic Sea) in October 2023. The transects were strategically selected to capture the influence of one of the most significant cruise ship ports in the Adriatic (the Port of Kotor), an area with substantial freshwater inflows, and the impact of open sea waters. Surface water samples were collected using a Manta trawl. The number and types of polymers were identified using optical microscopy and FTIR spectroscopy. MPs were present in all samples. There was statistical significant difference in the distribution of plastic polymers between the transects (χ2 = 16.87, p < 0.05). Higher MP concentrations were observed near municipal wastewater outlets and in the vicinity of the port. Floating MP abundance ranged from 0.03291 to 0.25126 items/m2, with an average value of 0.116847 items/m2. The collected MPs were predominantly filaments and fragments, primarily composed of polyethylene and polypropylene. The data obtained in this study are crucial for evaluating the extent of MPs pollution and assessing the environmental risks posed by plastic particles. The results indicate substantial MPs contamination, ranging from 0.7 to 5.6 times above baseline values and between 38 to 210 times higher than the threshold levels recommended for the Mediterranean Sea.