Scholarlink

<p>Microplastics (MPs) are emerging contaminants in freshwater ecosystems, yet their distribution patterns and drivers remain poorly understood. This study tested four hypotheses: (H1) that MP abundance in crayfish (<i>Astacus leptodactylus</i>) differs significantly among lakes with varying anthropogenic pressures; (H2) that MP morphology and polymer types are indicative of localized pollution sources; (H3) that fiber-shaped MPs dominate due to wastewater and textile inputs; and (H4) that spatial variation exists in MP color and polymer diversity. A total of 200 crayfish were collected from eight lakes in Türkiye. MPs were detected in 62% of individuals. Significant spatial variations in MP abundance were observed. Keban Dam Lake had 5 × higher MP concentrations in crayfish than Mamasin Dam Lake. Fibers (48%) and fragments (45%) were the most prevalent shapes; polyethylene (35%) and PET (29%) were the most common polymers. The results support all four hypotheses, highlighting the influence of land use, wastewater inputs, and atmospheric deposition on MP pollution. This study positions crayfish as effective bioindicators for monitoring freshwater microplastic contamination and underlines the need for targeted mitigation strategies.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Spatial distribution and characterization of microplastics in crayfish from inland waters of Türkiye

  • 期刊论文

  • 发表日期：

    2025年10月7日

查看全文
  • Ahmet Raif Eryaşar,
  • Tanju Mutlu,
  • Erdinç Veske,
  • Kenan Gedik

摘要

Microplastics (MPs) are emerging contaminants in freshwater ecosystems, yet their distribution patterns and drivers remain poorly understood. This study tested four hypotheses: (H1) that MP abundance in crayfish (Astacus leptodactylus) differs significantly among lakes with varying anthropogenic pressures; (H2) that MP morphology and polymer types are indicative of localized pollution sources; (H3) that fiber-shaped MPs dominate due to wastewater and textile inputs; and (H4) that spatial variation exists in MP color and polymer diversity. A total of 200 crayfish were collected from eight lakes in Türkiye. MPs were detected in 62% of individuals. Significant spatial variations in MP abundance were observed. Keban Dam Lake had 5 × higher MP concentrations in crayfish than Mamasin Dam Lake. Fibers (48%) and fragments (45%) were the most prevalent shapes; polyethylene (35%) and PET (29%) were the most common polymers. The results support all four hypotheses, highlighting the influence of land use, wastewater inputs, and atmospheric deposition on MP pollution. This study positions crayfish as effective bioindicators for monitoring freshwater microplastic contamination and underlines the need for targeted mitigation strategies.