极端降雨事件和风暴对亚热带沿海地区微生物社区动态的戏剧性影响
Madeline Olivia1, Clara Natalie Annabel2, Patrichka Wei-Yi Chen1
1Institute of Marine Environment and Ecology, National Taiwan Ocean University, Keelung 202-24, Taiwan; Doctoral Degree Program in Ocean Resource and Environmental Changes, National Taiwan Ocean University, Keelung 202-24, Taiwan.
The Science of the total environment
|January 21, 2025
概括
台风等极端天气事件显著改变沿海微生物食物网. 台风后,放牧成为对微生物种群的主要控制,影响碳循环.
科学领域:
- 海洋微生物生态学
- 气候变化影响气候变化的影响.
- 沿海生态系统的动态
背景情况:
- 极端天气事件,由气候变化加剧,越来越多地影响沿海环境.
- 微生物食物网是海洋生态系统的关键组成部分,影响生物地球化学循环.
- 台风Krathon提供了一个自然实验来研究短期微生物社区反应.
研究的目的:
- 调查台风克拉对台湾沿海微生物食物网的短期影响.
- 量化病毒,细菌,小ophytoplankton,纳米鞭毛虫,状动物和藻的丰度的变化.
- 为了确定台风后微生物死亡动态 (放牧与病毒溶解) 的转变.
主要方法:
- 每天在台湾沿海水域实地取样微生物种群.
- 修改稀释实验以评估放牧和病毒溶解率.
- 在台风Krathon之前和之后对微生物丰富度和死亡率的比较分析.
主要成果:
- 病毒,纳米鞭状体和Synechococcus spp. 的显著增加. 台风后的丰富度 (增加了4.2-160倍).
- 死亡率控制的转变:纳米鞭叶牧场成为细菌和Synechococcus spp.的主导. 在台风之后.
- 病毒溶解仍然是Synechococcus spp.的重要死亡因素. 台风前,但它的相对重要性在台风后下降.
结论:
- 台风等极端天气事件可以迅速改变微生物食物网的结构和功能.
- 在台风扰乱后,放牧成为沿海微生物社区的关键上下控制机制.
- 这些转变对碳循环和整体沿海生态系统健康有潜在的影响.
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