在中国周围的藻类繁殖从微藻转变为宏藻,随着越来越多的优化和气候变化,藻类繁殖的转变
Yuan Feng1, Yonglong Xiong1, Jason M Hall-Spencer2,3
1State Key Laboratory of Marine Environmental Science & College of Ocean and Earth Sciences, Xiamen University, Xiamen, China.
Global change biology
|November 8, 2023
概括
沿海中国的中国.
科学领域:
- 海洋生态海洋生态学
- 有害的藻类开花 有害的藻类开花
- 气候变化影响 气候变化影响
背景情况:
- 微藻红潮和大藻繁殖 (绿色/金色潮) 是中国重要的环境问题.
- 这些花之间的触发因素和相互作用仍然不清楚.
- 以前的研究集中在个别的花型上,缺乏比较分析.
研究的目的:
- 研究微藻红潮和中国大藻繁殖的长期趋势和相互作用.
- 确定影响花型转变的关键环境驱动因素.
- 了解这些转变对沿海生态系统的影响.
主要方法:
- 对中国30年 (1991-2020年) 的藻类繁殖监测数据进行分析.
- 对开花频率,覆盖面和环境因素 (营养素,CO2,SST,放牧) 的统计分析.
- 专注于四种主要的微藻类 (Prorocentrum donghaiense,Karenia mikimotoi,Noctiluca scintillans,Skeletonema costatum) 和大藻类 (Ulva,Sargassum) 的研究.
主要成果:
- 从1991年到2003年,红潮的频率增加,然后下降; 骨虫 (Skeletonema costatum) 呈现出最大的下降.
- 绿色和金色潮的频率分别从1999年和2012年开始增加.
- 宏观藻类的开花与营养负载,二氧化碳和SST正相关,与红潮频率负相关.
- 增加的微动物浮游生物放牧也导致了红潮的下降.
结论:
- 在过去的30年里,中国从微藻红潮到大藻繁殖发生了显著的转变.
- 温和化,气候变化 (增加CO2,SST) 和放牧压力是这种转变的主要驱动因素.
- 这些变化表明,中国沿海生态系统动态发生了根本性的变化.
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