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Mangrove microbiome reveals importance of sulfur metabolism in tropical coastal waters

Nobrega, M. S. (author)
Silva, B. S. (author)
Tschoeke, D. A. (author)
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Appolinario, L. R. (author)
Calegario, G. (author)
Venas, T. M. (author)
Macedo, L. (author)
Asp, N. (author)
Cherene, B. (author)
Marques, J. S. J. (author)
Seidel, M. (author)
Dittmar, T. (author)
Santos, Isaac R. (author)
Gothenburg University,Göteborgs universitet,Institutionen för marina vetenskaper,Department of marine sciences
de Rezende, C. E. (author)
Thompson, C. C. (author)
Thompson, F. L. (author)
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 (creator_code:org_t)
Elsevier BV, 2022
2022
English.
In: Science of the Total Environment. - : Elsevier BV. - 0048-9697. ; 813
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • 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 33 thousand tons C per day). 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.

Subject headings

NATURVETENSKAP  -- Biologi -- Ekologi (hsv//swe)
NATURAL SCIENCES  -- Biological Sciences -- Ecology (hsv//eng)
NATURVETENSKAP  -- Biologi -- Mikrobiologi (hsv//swe)
NATURAL SCIENCES  -- Biological Sciences -- Microbiology (hsv//eng)

Keyword

Biogeochemical cycles
Metagenomics
Estuary
Amazon
Mangrove
anoxygenic phototrophic bacteria
community structure
sepetiba bay
amazon river
tidal creek
insights
rather
growth
Environmental Sciences & Ecology

Publication and Content Type

ref (subject category)
art (subject category)

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