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Cited by 10 publications
(2 citation statements)
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“…The mixing zone is often reported as a hotspot for microbial processes due to the mixing of microbial communities and river compounds, , creating opportunities for high rates of carbon assimilation via distinct processes, including chemosynthesis using the energetic yields of oxidation of reduced compounds . Although our survey represents all available measurements in the Amazon River, we found other studies in different aquatic systems where rates vary from nanograms of carbon per hour in lakes. High rates of DCF were observed in karstic systems, which could be related to the high concentration of inorganic carbon and reduced compounds in soil and groundwater, creating opportunities for microbial growth using the energetic yields of redox reactions to promote chemosynthesis since HBP was observed at lower rates in these systems. , In river estuaries, turbulent mixing promotes an increase in DCF ,, and HBP, which could also be associated with reduced compounds from bottom sediments meeting oxic surface waters.…”
Section: Resultsmentioning
confidence: 85%
“…The mixing zone is often reported as a hotspot for microbial processes due to the mixing of microbial communities and river compounds, , creating opportunities for high rates of carbon assimilation via distinct processes, including chemosynthesis using the energetic yields of oxidation of reduced compounds . Although our survey represents all available measurements in the Amazon River, we found other studies in different aquatic systems where rates vary from nanograms of carbon per hour in lakes. High rates of DCF were observed in karstic systems, which could be related to the high concentration of inorganic carbon and reduced compounds in soil and groundwater, creating opportunities for microbial growth using the energetic yields of redox reactions to promote chemosynthesis since HBP was observed at lower rates in these systems. , In river estuaries, turbulent mixing promotes an increase in DCF ,, and HBP, which could also be associated with reduced compounds from bottom sediments meeting oxic surface waters.…”
Section: Resultsmentioning
confidence: 85%
“…Only a few studies combining chemosynthetic production (herein referred to as dark carbon fixation, DCF) and heterotrophic microbial production (HMP) have been done in the SW Atlantic Ocean. However, these published studies are only related to tropical estuarine systems (Signori et al, 2018;Signori et al, 2020). Thus, there is a need to increase the efforts in studies on these metabolic processes to better understand their impact on biogeochemical cycles as a whole.…”
Section: Introductionmentioning
confidence: 99%