Dramatic effect of extreme rainfall event and storm on microbial community dynamics in a subtropical coastal region

IF 8.2 1区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES
Madeline Olivia , Clara Natalie Annabel , Patrichka Wei-Yi Chen , Chih-hao Hsieh , Feng-Hsun Chang , Pei-Chi Ho , Chia-Te Chien , Chien-Fu Chao , Vladimir Mukhanov , An-Yi Tsai
{"title":"Dramatic effect of extreme rainfall event and storm on microbial community dynamics in a subtropical coastal region","authors":"Madeline Olivia ,&nbsp;Clara Natalie Annabel ,&nbsp;Patrichka Wei-Yi Chen ,&nbsp;Chih-hao Hsieh ,&nbsp;Feng-Hsun Chang ,&nbsp;Pei-Chi Ho ,&nbsp;Chia-Te Chien ,&nbsp;Chien-Fu Chao ,&nbsp;Vladimir Mukhanov ,&nbsp;An-Yi Tsai","doi":"10.1016/j.scitotenv.2025.178560","DOIUrl":null,"url":null,"abstract":"<div><div>Extreme weather events, such as heavy rainfall and typhoons, are becoming more frequent due to climate change and can significantly impact coastal microbial communities. This study examines the short-term alterations in microbial food webs—viruses, bacteria, picophytoplankton, nanoflagellates, ciliates, and diatom—following Typhoon Krathon in Taiwan's coastal waters in October 2024. Daily in situ sampling revealed a significant post-typhoon increased in viral, nanoflagellate, and <em>Synechococcus</em> spp. abundance. Furthermore, viral, <em>Synechococcus</em> spp., and nanoflagellate abundance increased by approximately 4.2 to 12.8-fold, 33.3 to 160 fold, and 0.5 to 9.4 fold in response to these weather events, compared to periods pre-typhoon, respectively. Modified dilution experiments showed that, before the typhoon, nanoflagellate grazing was the major cause of bacterial mortality, while viral lysis was the main cause of <em>Synechococcus</em> spp. mortality. Post-typhoon, there was a notable shift, with nanoflagellate grazing increasing mortality rates of bacteria and <em>Synechococcus</em> spp., suggesting that grazing became the dominant top-down control mechanism after the disturbance. Our findings suggest that extreme weather events shift microbial mortality dynamics, increasing the role of grazing in controlling microbial populations, with potential implications for carbon cycling in coastal ecosystems.</div></div>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":"964 ","pages":"Article 178560"},"PeriodicalIF":8.2000,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Science of the Total Environment","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0048969725001949","RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
引用次数: 0

Abstract

Extreme weather events, such as heavy rainfall and typhoons, are becoming more frequent due to climate change and can significantly impact coastal microbial communities. This study examines the short-term alterations in microbial food webs—viruses, bacteria, picophytoplankton, nanoflagellates, ciliates, and diatom—following Typhoon Krathon in Taiwan's coastal waters in October 2024. Daily in situ sampling revealed a significant post-typhoon increased in viral, nanoflagellate, and Synechococcus spp. abundance. Furthermore, viral, Synechococcus spp., and nanoflagellate abundance increased by approximately 4.2 to 12.8-fold, 33.3 to 160 fold, and 0.5 to 9.4 fold in response to these weather events, compared to periods pre-typhoon, respectively. Modified dilution experiments showed that, before the typhoon, nanoflagellate grazing was the major cause of bacterial mortality, while viral lysis was the main cause of Synechococcus spp. mortality. Post-typhoon, there was a notable shift, with nanoflagellate grazing increasing mortality rates of bacteria and Synechococcus spp., suggesting that grazing became the dominant top-down control mechanism after the disturbance. Our findings suggest that extreme weather events shift microbial mortality dynamics, increasing the role of grazing in controlling microbial populations, with potential implications for carbon cycling in coastal ecosystems.

Abstract Image

极端降雨事件和风暴对亚热带沿海地区微生物群落动态的剧烈影响。
由于气候变化,暴雨和台风等极端天气事件变得越来越频繁,并可能对沿海微生物群落产生重大影响。摘要本研究探讨2024年10月台风“克拉顿”过后,台湾沿海地区微生物食物网(病毒、细菌、浮游植物、纳米鞭毛虫、纤毛虫及硅藻)的短期变化。每日原位取样显示台风后病毒、纳米鞭毛虫和聚球菌丰度显著增加。此外,与台风前相比,病毒、聚血球菌和纳米鞭毛虫的丰度分别增加了约4.2至12.8倍、33.3至160倍和0.5至9.4倍。改良稀释实验表明,台风前,纳米鞭毛草放牧是导致细菌死亡的主要原因,而病毒裂解是导致聚藻球菌死亡的主要原因。台风过后,这一现象发生了显著的变化,纳米鞭毛草放牧增加了细菌和聚球菌的死亡率,表明放牧成为台风过后自上而下的主要控制机制。我们的研究结果表明,极端天气事件改变了微生物死亡动态,增加了放牧在控制微生物种群中的作用,对沿海生态系统的碳循环有潜在的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Science of the Total Environment
Science of the Total Environment 环境科学-环境科学
CiteScore
17.60
自引率
10.20%
发文量
8726
审稿时长
2.4 months
期刊介绍: The Science of the Total Environment is an international journal dedicated to scientific research on the environment and its interaction with humanity. It covers a wide range of disciplines and seeks to publish innovative, hypothesis-driven, and impactful research that explores the entire environment, including the atmosphere, lithosphere, hydrosphere, biosphere, and anthroposphere. The journal's updated Aims & Scope emphasizes the importance of interdisciplinary environmental research with broad impact. Priority is given to studies that advance fundamental understanding and explore the interconnectedness of multiple environmental spheres. Field studies are preferred, while laboratory experiments must demonstrate significant methodological advancements or mechanistic insights with direct relevance to the environment.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信