在全球跨年事件下的海洋养殖中,叶绿素a的时间和空间变化模式
Shike Gao1, Yixi Shi2, Shuo Zhang3
1College of Marine Living Resource Sciences and Management, Shanghai Ocean University, Shanghai, 201306, China.
Marine environmental research
|October 11, 2024
概括
海洋牧场增强生态系统,其中叶绿素a (Chla) 表示健康. 盐度,深度和温度是影响Chla的关键因素,即使是在厄尔尼诺现象期间,也有助于未来的生态评估.
科学领域:
- 海洋生态学和海洋学
- 环境监测和评估环境监测和评估
- 气候变化对海洋生态系统的影响
背景情况:
- 海洋生态系统面临着全球气候变化带来的重大挑战.
- 海洋牧场是生态恢复和可持续发展的关键战略.
- 甲度 (Chla) 作为评估海洋养殖生态健康的关键指标.
研究的目的:
- 为了分析海州湾海洋养殖区中Chla的时空分布.
- 从2003年到2022年,调查Chla对环境因素的反应.
- 了解Chla在不同气候条件下的变化,包括厄尔尼诺现象.
主要方法:
- 利用了海州湾海洋养殖区的20年 (2003-2022) 数据集.
- 分析了季节性和跨年Chla分布模式.
- 采用了通用添加模型 (GAM) 来识别Chl.的主要环境驱动因素.
主要成果:
- 克拉表现出一个季节性模式:夏季>春季>秋季,在中央牧场地区分布均.
- 年间Chla分布从中部 (2014-2016) 转移到东部 (2018-2019) 和西部 (2020-2021).
- 盐度,深度,温度,BOD5和SiO3-Si是春季,夏季和秋季的主要驱动因素;盐度,深度,温度,BOD5和透明度在厄尔尼诺期间.
结论:
- 盐度,深度和温度对整个气候条件的Chla调节始终至关重要.
- 在所有条件下,SiO3--Si和透明度可能不是Chla的限制因素.
- 年间的变化影响了上游和垂直混合,改变了Chla的空间模式,并有助于对海洋养殖的未来预测.
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