小微塑料在挪威沿海流中的空间分布
Fangzhu Wu1, Lina Reding1, Marrit Starkenburg1
1Shelf Sea System Ecology, Alfred Wegener Institute Helmholtz Center for Polar and Marine Research, Kurpromenade 201, 27498 Helgoland, Germany.
The Science of the total environment
|June 7, 2024
概括
小微塑料 (SMPs) 在北极表面水域丰富,其度明显高于深水域. 它们的水平分布似乎是均的,这表明从欧洲水域广泛运输.
科学领域:
- 环境科学 环境科学
- 海洋学 海洋学 海洋学
- 海洋污染 海洋污染
背景情况:
- 微塑料 (MP) 污染在北冰洋越来越令人担忧.
- 关于从欧洲水域到北极的国会议员高分辨率运输的数据有限.
研究的目的:
- 调查MP的度,组成和分布在挪威沿海流沿线的各种水深.
- 了解国会议员从欧洲水域到北极的横向和垂直运输路径.
主要方法:
- 使用Neuston Catamaran,COMPASS系统和现场,对地表,地底和深水进行采样.
- 使用FTIR显微镜和光谱分析MP度,聚合物组成和尺寸分布.
- 使用拉格朗的粒子分散模拟模型来评估大规模的MP传输.
主要成果:
- 小微塑料 (SMPs,<300μm) 显示出高变性 (0-1240 MP m−3),与较深水 (16 MP m−3) 相比,在表面 (189 MP m−3) 和地下 (38 MP m−3) 水中度明显更高.
- 微型塑料<50微米占所有检测到的MP的80%以上,其表面度比大型微塑料 (LMP,>300微米) 高四个数量级.
- 在表面/地下水中没有发现SMP度的显著地理模式,这表明在挪威沿海电流/挪威大西洋电流界面内均的水平分布.
结论:
- 挪威沿海流是微塑料运输到北极的重要途径.
- 小微塑料在上层水柱中主导MP负载,水平分布均.
- 使用分散模型进行进一步的研究对于了解微塑料在北极生态系统中的大规模运输至关重要.
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