三十年来,大西洋东北部棕藻中潜在有毒元素的变化
Carme Pacín1,2, J Ángel Fernández1, Mercedes Conde-Amboage3
1CRETUS Centre, Department of Functional Biology, Ecology Unit, Universidade de Santiago de Compostela, Santiago de Compostela 15782, Spain.
Environmental science & technology
|May 22, 2025
概括
西北西班牙的潜在有毒元素 (PTEs) 造成的海洋污染已经减少,铜,,和的含量有显著减少. 然而,含量正在上升,需要持续的环境监测.
科学领域:
- 环境化学环境化学
- 海洋生物学 海洋生物学
- 生态毒理学 生态毒理学
背景情况:
- 潜在有毒元素 (PTEs) 造成的海洋污染对沿海生态系统构成重大威胁.
- 长期监测对于理解和减轻这些影响至关重要.
研究的目的:
- 评估棕藻 (Fucus spp.) 中PTE的长期趋势. 沿西北西班牙海岸.
- 评估污染减缓战略的有效性,并确定新出现的污染问题.
主要方法:
- 446 Fucus spp. 的分析. 这些样本是在1990年至2021年间从173个沿海地点收集的.
- 一致的重新采样方法来追踪PTE度 (Al,Cr,Fe,Ni,Cu,Zn,As,Cd,Hg) 的时间变化.
主要成果:
- 观察到人为PTE的显著下降:铜 (-84.7%), (-84.6%), (-49.6%) 和 (-36.7%).
- (As) 显著增加了36.1%,原因不明.
- 在内部河口地区发现了更高的PTE度,没有一致的度趋势.
结论:
- 有效的沿海污染缓解导致通过Fucus spp.在海洋食物网中减少生物可用PTE.
- 水平的上升和复杂的污染动态凸显了持续环境监测的必要性.
- 本研究提供了对棕藻长期PTE趋势的全面标准化评估,为环境政策和海岸管理提供了信息.
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