Journal article
Mangrove microbiome reveals importance of sulfur metabolism in tropical coastal waters
The Science of the Total Environment, Vol.813, pp.1-9
20/03/2022
PMID: 34826491
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Source: InCites
Abstract
Mangroves under macro-tidal regimes are global carbon sequestration hotspots but the microbial drivers of biogeochemical cycles remain poorly understood. Here, we investigate the drivers of mangrove microbial community composition across a porewater-creek-estuary-ocean continuum. Observations were performed on the Amazon region in one of the largest mangrove systems worldwide with effective sequestration of organic carbon buried in soils and dissolved carbon via outwelling to the ocean. The potential export to the adjacent oceanic region ranged from 57 to 380 kg of dissolved and particulate organic carbon per second (up to 1368 tons C per hour). Macro tides modulated microbial communities and their metabolic processes, e.g., anoxygenic phototrophy, sulfur, and nitrogen cycling. Respiration, sulfur metabolism and dissolved organic carbon (DOC) levels were linked to functional groups and microbial cell counts. Total microbial counts decreased and cyanobacteria counts peaked in the spring tide. The microbial groups driving carbon, nitrogen, sulfur and methane cycles were consistent across all spatial scales. Taxonomic groups engaged in sulfur cycling (Allochromatium, Desulfovibrio, and Thibacillus) within mangroves were abundant at all scales. Tidally-driven porewater exchange within mangroves drove a progressive increase of sulfur cycle taxonomic groups and their functional genes both temporally (tidal cycles) and spatially (from mangrove porewater to continental shelf). Overall, we revealed a unified and consistent response of microbiomes at different spatial and temporal scales to tidally-driven mangrove porewater exchange.
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•Unified response of microbiomes (m to km)•Tide increase led to reduced microbial abundance and DOC.•Tide increase led to Allochromatium, Nitrosococcus, Methylococcus, SRB increase.•Tide increase led to a cyanobacteria, sulfur metabolism, respiration increase.•Possible carbon export of up to 1368 tons C per hour to the ocean
Details
- Title
- Mangrove microbiome reveals importance of sulfur metabolism in tropical coastal waters
- Creators
- Maria S Nóbrega - Universidade Federal do Rio de JaneiroBruno S Silva - Universidade Federal do Rio de JaneiroDiogo A Tschoeke - Universidade Federal do Rio de JaneiroLuciana R Appolinario - Universidade Federal do Rio de JaneiroGabriela Calegario - Universidade Federal do Rio de JaneiroTaina M Venas - Universidade Federal do Rio de JaneiroLarissa Macedo - Universidade Federal do Rio de JaneiroNils Asp - Universidade Federal do ParáBraulio Cherene - Universidade Estadual do Norte FluminenseJomar S.J Marques - Universidade Estadual do Norte FluminenseMichael Seidel - University of OldenburgThorsten Dittmar - University of OldenburgIsaac R Santos - University of GothenburgCarlos Eduardo de Rezende - Universidade Estadual do Norte FluminenseCristiane C Thompson - Universidade Federal do Rio de JaneiroFabiano L Thompson - Universidade Federal do Rio de Janeiro
- Publication Details
- The Science of the Total Environment, Vol.813, pp.1-9
- Publisher
- Elsevier BV
- Grant note
- This work was funded by CNPq, FAPERJ, CAPES, and DFG-FAPERJ cooperative project (DI 842/6-1) to FT, MS, TD, and CER.
- Identifiers
- 991012982980202368
- Copyright
- © 2021 Published by Elsevier B.V.
- Academic Unit
- Faculty of Science and Engineering; National Marine Science Centre; Science
- Language
- English
- Resource Type
- Journal article