Seasonality and vertical structure of microbial communities in the alpine wetland

Author:

Wang Huiyuan1,Li Yue1,Yang Xiaoqin2,Niu Bin2,Jiao Hongzhe2,Yang Ya1,Huang Guoqiang1,Hou Weiguo1,Zhang Gengxin3

Affiliation:

1. China University of Geosciences

2. University of Chinese Academy of Sciences

3. Chinese Academy of Sciences

Abstract

Abstract The soil microbial community plays an important role in wetland ecosystem material transformation and energy flow. The temporal dynamics and spatial distribution of soil microbial communities have always been central questions in ecology. Numerous studies on wetland microbial community structure have focused on low altitudes, while patterns of microbial diversity across seasons and depths and their environmental determinants remain poorly studied. Here, we collected soil samples across four seasons at 0–5, 5–10, and 10–30 cm in the NamCo wetland on the Tibetan Plateau to study the seasonality and vertical patterns of soil microbial communities and their main drivers. We found clear seasonal variation in bacterial community composition, most pronounced in winter, but nonsignificant seasonal variation in archaea. In particular, Proteobacteria decreased by 11.5% in winter compared with other seasons (P < 0.05). The alpha diversity, indicated by the Chao1 index, showed hump-shaped seasonal patterns with a lower diversity in winter for bacteria but nonsignificant patterns in archaea across depths. PERMANOVA showed that the bacterial community structure had significant differences between winter and the other three seasons (P < 0.05). In addition, bacterial and archaeal community structures differed between surface (0–5 cm) and deeper (5–30 cm) soils (P < 0.01). Redundancy analysis demonstrated that soil total nitrogen, soil total phosphorus, and total soil organic carbon had significant effects on bacteria and archaea (P < 0.05). Furthermore, the bacterial community structure was strongly affected by soil moisture content and temperature (P < 0.001). Our findings highlighted the seasonal variation in the microbial community and the profound influence of soil moisture and temperature on microbial structure in alpine wetlands on the Tibetan Plateau.

Publisher

Research Square Platform LLC

Reference42 articles.

1. Review on the study of soil microorganisms in Wetland Ecosystems;Liu Y;Chin J Appl Environ Biology,2013

2. Response of soil microbial community structure and function to different altitudes in arid valley in Panzhihua, China;Zhang RJ;BMC Microbiol,2022

3. Progress and prospect of soil microorganisms and their influencing factors in coastal wetland ecosystem;Xie X;Acta Ecol Sin,2021

4. Seasonal variation characteristics of soil microbial community structure in Zhalong wetland;Wang L;Chin J Appl Environ Biology,2018

5. Changes in soil microbial community structure and function in an alpine dry meadow following spring snow melt;Lipson DA;Microb Ecol,2002

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3