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Authors Behera, P; Mohapatra, M; Kim, JY; Rastogi, G
Author Full Name Behera, Pratiksha; Mohapatra, Madhusmita; Kim, Ji Yoon; Rastogi, Gurdeep
Title Benthic archaeal community structure and carbon metabolic profiling of heterotrophic microbial communities in brackish sediments
Source SCIENCE OF THE TOTAL ENVIRONMENT
Language English
Document Type Article
Author Keywords BIOLOG; Salinity; Macrophyte; Chilika; Brackish water
Keywords Plus SOUTH CHINA SEA; PHRAGMITES-AUSTRALIS; PEARL RIVER; BACTERIAL COMMUNITIES; AMMONIA OXIDIZERS; WATER LAGOON; COASTAL; DIVERSITY; SALINITY; ESTUARY
Abstract Benthic Archaea play a crucial role in the biogeochemical cycles and food webs, however, their spatiotemporal distribution and environmental drivers are not well investigated in brackish sediments. The composition and abundances of benthic archaeal communities were examined from a coastal lagoon; Chilika (India) which is experiencing an intense pressure from anthropogenic and natural factors. High-throughput sequencing of 16S rRNA genes revealed that sediment (n = 96) archaeal communities were largely composed of Crenarchaeota (18.76%), Euryarchaeota (18.34%), Thaumarchaeota (13.45%), Woesearchaeota (10.05%), and Pacearchaeota (4.21%). Archaeal Laxa affiliated to methanogens, sulfate-reducers, and ammonia-oxidizers were detected suggesting that carbon, sulfur, and nitrogen cycles might be prominent in benthic sediments. Salinity, total organic carbon, available nitrogen, available phosphorus, macrophyte (Phragmites karka) and inter-taxa relationships between community members and with bacterial communities played steering roles in structuring the archaeal communities. Marine sites with mesohaline-polyhaline regime were dominated by Nitrosopumilus and Thaumarchaeota. In contrast, riverine sites with oligohaline regime demonstrated a higher abundance of Thermoprotei. Macrophyte dominated zones were enriched in Methanomicrobia and Methanobacteria in their rhizosphere sediments, whereas, bulk (un-vegetated) sediments were dominated by Nitrosopurmilus. Spatial patterns in archaeal communities demonstrated 'distance-decay' patterns which were correlated with changes in physicochemical factors over geographical distances. Heterotrophic microbial communities showed much higher metabolic diversity and activity in their carbon utilization profiles in rhizosphere sediments than the bulk sediments. This baseline information on benthic archaea and their environmental drivers would be useful to assess the impact of anthropogenic and natural pressures on these communities and associated biogeochemical cycles. (C) 2019 Elsevier B.V. All rights reserved.
Author Address [Behera, Pratiksha; Mohapatra, Madhusmita; Rastogi, Gurdeep] Chilika Dev Author, Wetland Res & Training Ctr, Balugaon 752030, Odisha, India; [Kim, Ji Yoon] Natl Inst Environm Studies, Ctr Climate Change Adaptat, Tsukuba, Ibaraki 3058506, Japan
Reprint Address Rastogi, G (corresponding author), Chilika Dev Author, Wetland Res & Training Ctr, Balugaon 752030, Odisha, India.
E-mail Address rastogigurdeep@gmail.com
Funding Agency and Grant Number World BankThe World Bank India [4765-IN]
Funding Text Authors acknowledge the financial support received from World Bank (Credit No. 4765-IN) given to Chilika Development Authority under the Integrated Coastal Zone Management Project (ICZMP) of Odisha. The authors would like to sincerely acknowledge Dr. Pradipta R. Muduli for sharing the water quality data. Mr. Bibhuti Bhusan Dora is acknowledged for the preparation of Chilika GIS map. Dr. Deepak Mishra, University of Georgia, USA is acknowledged for editing of this manuscript. Authors appreciate reviewers for their critical and constructive comments for improving the manuscript.
Publisher ELSEVIER
Publisher City AMSTERDAM
Publisher Address RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS
ISSN 0048-9697
29-Character Source Abbreviation SCI TOTAL ENVIRON
ISO Source Abbreviation Sci. Total Environ.
Publication Date MAR 1
Year Published 2020
Volume 706
Article Number 135709
Digital Object Identifier (DOI) 10.1016/j.scitotenv.2019.135709
Page Count 15
Web of Science Category Environmental Sciences
Subject Category Environmental Sciences & Ecology
Document Delivery Number KB3CF
Unique Article Identifier WOS:000506376300025
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