Porewater microbiomes in buried wetland soils: Synergic effects of water chemistry and redox gradients associated with hydrological processes

湿地 生物地球化学循环 漫滩 环境科学 生态学 微生物种群生物学 土壤水分 环境化学 生物地球化学 酸杆菌 低流变区 水文学(农业) 蛋白质细菌 地表水 生物 地质学 化学 细菌 环境工程 遗传学 16S核糖体RNA 岩土工程
作者
Jinjun Kan,Olesya Lazareva,Diana Oviedo‐Vargas,Sean M. McAllister,Clara S. Chan
出处
期刊:Freshwater Biology [Wiley]
卷期号:69 (6): 894-906 被引量:1
标识
DOI:10.1111/fwb.14253
摘要

Abstract Interstitial water or pore water occupies the space between soil particles and provides “hotspots” and “fluvial networks” for microbial activities in floodplain soil. However, to date, we know very little about the microorganisms living in pore water and how they respond to environmental changes. This study aimed to understand microbial distribution and assemblage in riparian pore waters, and how they respond to water chemistry and redox gradients associated with hydrological processes. We analysed the annual changes of porewater microbial communities from the east and west banks of the White Clay Creek, a site at the Christina River Basin – Critical Zone Observatory, Pennsylvania, USA. Microbial abundances were quantified by epifluorescence microscopy and detailed community structures were characterised by high‐throughput sequencing. Water chemistry and redox gradients were also monitored and recorded, and their interactions with porewater microbiomes were analysed using correlations and multivariate analyses. Abundance of microbial cells increased during summer and late autumn. Wetland porewater microbiomes mainly contained Acidobacteria, Bacteroidetes, Nitrospirae and Proteobacteria, and microbiome structures were easily distinguishable from those in the underlying hyporheic gravel layer. Seasonal dynamics of bacterial community structure in the east and west wetlands were distinct, responding to floodplain topography and associated hydrological/geochemical processes. Iron (Fe)‐cycling bacteria (mainly Gallionellaceae and Rhodoferax spp.) dominated the porewater microbiome, and their relative abundance was significantly higher in the east than the west wetland. Furthermore, Fe‐oxidising bacteria (Gallionellaceae) were negatively correlated with Fe‐reducing bacteria ( Rhodoferax spp.) at the east wetland. Microbial abundances (cell density) in pore waters showed similar seasonal patterns across stream banks, but microbial community structure did not. Microbiome assembly in pore water is correlated with water chemistry and redox gradients primarily associated with local hydrological processes. As a consequence of their significance for carbon (C) mineralisation and Fe reduction at terrestrial–aquatic interfaces, microbiomes in riparian pore waters and associated microbial activity play an essential role in C and mineral dynamics. These findings will inform future studies of the response of freshwater ecosystems to hydrological dynamics influenced by global climate change.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
zoeyyy完成签到,获得积分10
1秒前
Lucas应助WANG采纳,获得10
1秒前
1秒前
1秒前
Xltox完成签到,获得积分10
2秒前
XylonYu完成签到,获得积分10
3秒前
华仔应助碧蓝碧凡采纳,获得10
4秒前
5秒前
超勍发布了新的文献求助10
9秒前
小马甲应助yuanshl1985采纳,获得10
9秒前
zhuxiaonian完成签到,获得积分10
12秒前
田様应助淘气科研采纳,获得10
12秒前
chenyi完成签到,获得积分10
13秒前
zyyyy完成签到,获得积分10
13秒前
奶黄包完成签到 ,获得积分10
13秒前
SYLH应助海阔天空采纳,获得10
13秒前
13秒前
机灵又蓝完成签到,获得积分10
14秒前
张土豆完成签到 ,获得积分10
14秒前
善学以致用应助小王采纳,获得10
14秒前
orang完成签到,获得积分10
15秒前
巧巧艾完成签到,获得积分10
15秒前
16秒前
邵洋完成签到,获得积分10
16秒前
sl发布了新的文献求助10
16秒前
17秒前
小迪迦奥特曼完成签到,获得积分10
17秒前
17秒前
cckk发布了新的文献求助10
18秒前
夏目由美完成签到 ,获得积分10
18秒前
Jasper应助哦哦哦采纳,获得10
19秒前
YYD完成签到,获得积分10
19秒前
超勍完成签到,获得积分10
19秒前
碧蓝碧凡发布了新的文献求助10
20秒前
Popeye应助鹤鸣采纳,获得30
20秒前
YYD发布了新的文献求助10
21秒前
yuanshl1985发布了新的文献求助10
21秒前
积极的黑猫完成签到,获得积分10
22秒前
GB完成签到 ,获得积分10
22秒前
Metx完成签到 ,获得积分10
23秒前
高分求助中
【提示信息,请勿应助】关于scihub 10000
Les Mantodea de Guyane: Insecta, Polyneoptera [The Mantids of French Guiana] 3000
徐淮辽南地区新元古代叠层石及生物地层 3000
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
Global Eyelash Assessment scale (GEA) 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 550
Research on Disturbance Rejection Control Algorithm for Aerial Operation Robots 500
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 4038426
求助须知:如何正确求助?哪些是违规求助? 3576119
关于积分的说明 11374556
捐赠科研通 3305834
什么是DOI,文献DOI怎么找? 1819339
邀请新用户注册赠送积分活动 892678
科研通“疑难数据库(出版商)”最低求助积分说明 815029