从海底火山排放的对内湾生态系统的影响
Takashi Tomiyasu1, Hideaki Matsuki1, Masanori Oda1
1Graduate School of Science and Engineering, Kagoshima University, 1-21-35 Korimoto, Kagoshima, 890-0065, Japan.
Chemosphere
|August 7, 2023
概括
鹿岛湾的海底火山活动释放,显著增加了当地的浮游生物中的水平. 这些高度,特别是有机,在较大的动物浮游生物中表现出季节性变化和生物积累.
科学领域:
- 海洋生物学 海洋生物学
- 环境化学环境化学
- 地质化学 地质化学
背景情况:
- 鹿岛湾在200米深处经历了持续的海底火山活动.
- 来自火山等自然来源的污染对海洋生态系统构成风险.
研究的目的:
- 测量海底火山附近植物浮游生物和动物浮游生物中的度.
- 评估火山排放对海洋食物网的影响.
- 了解浮游生物中的季节性变化和生物积累.
主要方法:
- 通过垂直拖运 (0-200米) 收集的植物性浮游生物 (<0.1毫米) 和动物性浮游生物 (>0.1毫米).
- 使用已确定的分析技术测量有机,无机和总度.
- 从内湾 (火山附近) 和中央湾的浮游生物中比较含量.
主要成果:
- 火山附近的浮游生物中的总度比中央海湾高出一个数量级.
- 内湾浮游生物中的有机度呈现季节性波动,在夏季达到峰值.
- 在较大的动物浮游生物中发现了更高的有机含量,这表明生物放大.
结论:
- 海底火山活动是鹿岛湾污染的重要来源.
- 水银在海洋食物网中生物积累,在较大的动物浮游生物中观察到的度更高.
- 水平的季节性变化与火山活动和海洋学条件有关.
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