海鸟运输的污染物分散在岛屿生态系统中
Megan L Grant1, Alexander L Bond2, Suzie M Reichman3
1Institute for Marine and Antarctic Studies, University of Tasmania, School Road, Newnham, Tasmania, 7248, Australia.
Chemosphere
|June 2, 2024
概括
肉脚的切水鸟通过它们的瓜诺将海洋污染物运送到陆地上. 这些污染物积聚在岛屿土壤中,对陆地生态系统构成风险.
科学领域:
- 环境科学 环境科学
- 生态生态学 生态生态学
- 海洋生物学 海洋生物学
背景情况:
- 海鸟对于将海洋营养物质和污染物通过瓜诺沉积转移到陆地生态系统至关重要.
- 海洋污染导致受污染的海鸟瓜诺,引发了对陆地生态系统健康的担忧.
- 肉脚切割水 (Ardenna carneipes) 在运输污染物的作用方面受到研究.
研究的目的:
- 量化金属和金属化物度 肉脚 切割水 瓜诺,土壤,植物和动物.
- 评估这些微量元素的生物积累和环境污染潜力.
- 了解海鸟污染物对陆地环境的生态影响.
主要方法:
- 在瓜诺,土壤,植物和初级消费者中分析金属和金属化物度 (As,Cd,Cr,Cu,Hg,Pb).
- 污染地点与对照区域和以前被占用区域的比较.
- 污染物运输和生物积累途径的生态评估.
主要成果:
- 肉脚切割水瓜诺的金属度高于其他Procellariiformes,可能与塑料摄入有关.
- 与对照地点相比,剪水殖民地的土壤显示大多数测试金属的含量显著增加.
- 陆地植物和主要消费者表现出较少的污染,在不同级别的瓜输入量之间没有显著差异.
结论:
- 肉脚剪水作为海洋污染物的重要载体,将它们转移到Lord Howe岛的陆地环境中.
- 虽然陆地食物网的直接生物积累是有限的,但土壤污染是一个显著的后果.
- 该研究强调了海鸟在受污染的海洋生态系统中寻找食物和筑巢行为的生态影响.
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