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红树林生态系统中重金属的热带转移:水鸟的生物积累模式和生态风险

Jeganathan Pandiyan¹, Tirumurugan Sumathi¹, Radjassegarin Arumugam²

¹Department of Zoology and Wildlife Biology, A.V.C. College, Mannampandal, 609 305, Mayiladuthurai, Tamil Nadu, India.

Marine pollution bulletin

|July 12, 2025

概括

重金属污染了红树林生态系统,积聚在沉积物,水和水生生物中. 水鸟面临着高的生态风险,突出了污染控制和生物监测的必要性.

科学领域:

环境科学环境科学
生态毒理学生态毒理学
海洋生物学海洋生物学

背景情况:

红树林生态系统是重要的生物多样性热点,受到人类造成的污染,特别是重金属的威胁.
了解重金属热带转移对于评估这些敏感环境中的生态风险至关重要.

研究的目的:

为了研究人类影响的红树林系统中的重金属 trofhic 转移.
为了将非生物体 (沉积物,水) 中的金属污染与猎物 (无脊椎动物,鱼类) 中的生物积累以及水禽中的生态风险联系起来.

主要方法:

使用ICP-MS.量化了八种金属 (As,Cd,Co,Cr,Cu,Ni,Pb,Zn) 的含量.
使用度因子 (CF) 和鸟类潜在风险指数 (PRI) 评估污染.
采用主要组件分析 (PCA) 来识别金属转移途径.

主要成果:

沉积物充当金属水槽 (CF<1),而水则表现出严重的Cd,Cr,Ni,Pb污染 (CF≥6).
聚合物 (Arenicola marina) 积累了Cd,Cr,Ni,Pb; 软体动物/甲动物积累了Cu,Zn; 鱼类 (Sardinella fimbriata) 显示出高的As.
水鸟,特别是Ardea alba,表现出高度的羽毛金属 (As,Cr,Ni,Pb) 和高生态风险 (PRI≥3).

结论:

水鸟作为有效的哨兵,用于生物监测红树林中的重金属污染.
紧急的污染控制措施是必要的,以保护红树林生态系统的完整性.
确定了不同的金属转移途径,将环境污染与鸟类生物积累联系起来.

关键词:

水生动物的食物网.鸟类的生物指标生物放大生物放大生态毒理学生态毒理学微量元素中的微量元素.

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