在佛得角的博阿维斯塔岛上绘制海洋垃圾热点的地图
Diana Sousa-Guedes1, Neftalí Sillero2, Mara Abu-Raya3
1Centro de Investigação em Ciências Geo-Espaciais (CICGE), Faculdade de Ciências da Universidade do Porto, Alameda do Monte da Virgem, 4430-146 Vila Nova de Gaia, Portugal; BIOS.CV - Conservation of the Environment and Sustainable Development, CP 52111 Sal Rei, Boa Vista Island, Cabo Verde; Estación Biológica de Doñana, CSIC, C/ Américo Vespucio, s/n, 41092 Sevilla, Spain.
Marine pollution bulletin
|March 19, 2025
概括
海洋垃圾,主要是塑料,积聚在博阿维斯塔岛上.
科学领域:
- 海洋生物学 海洋生物学
- 环境科学环境科学
- 生态生态学 生态生态学
背景情况:
- 沿海生态系统面临着来自海洋垃圾的日益严重的威胁.
- 海洋岛屿特别容易受到海流造成的碎片积累的影响.
- 塑料污染带来了重大的生态风险.
研究的目的:
- 为了对波阿维斯塔岛沙上的海洋垃圾进行首次评估.
- 使用新的方法量化微型,中型和宏型碎片的密度.
- 确定海洋垃圾积累的热点和来源.
主要方法:
- 利用基于无人机的空中图像进行大规模的碎片评估.
- 采用了沙子采样来量化微,中,和宏观碎片.
- 分析了碎片的组成,重点关注塑料类型和与渔业有关的物品.
主要成果:
- 北面和东面的海呈现出最多的碎片积累 (>85%的塑料).
- 基于无人机的平均宏观碎片密度在5到2371个项目/100m之间.
- 庞塔德罗克海的碎片密度非常高 (占总体的31%).
结论:
- 无人机调查有效地确定了海洋垃圾热点,并与地面数据相关联.
- 结果为监测岛屿系统中的塑料污染提供了关键的基线数据.
- 该方法可用于评估类似环境中的海洋垃圾.
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