Simultaneous measurements of dark carbon fixation and bacterial production in lake sediment [PDF]
Limnology and Oceanography: Methods, 2013 Carbon fixation by chemoautotrophic bacteria represents an autochthonous source of organic matter, and may be of particular importance close to redox boundaries. Despite the known sediment chemoautotrophic potential, the quantitative role and the importance of dark carbon fixation (DCF) in lake sediments are still unknown.
A. Santoro +3 more
semanticscholar +2 more sources
Significant dark inorganic carbon fixation in the euphotic zone of an oligotrophic sea
Limnology and OceanographyEstimates of primary productivity have traditionally disregarded dark inorganic carbon fixation by marine microorganisms. Currently, only limited data are available from different systems on this potentially ecologically important process.
T. Reich +4 more
semanticscholar +2 more sources
Contribution of ammonia oxidizers to inorganic carbon fixation in the dark ocean
bioRxivAmmonia-oxidizing archaea are the most abundant chemolithoautotrophs in the ocean, comprising up to 40% of microbial cells in deep waters, and are assumed to dominate dissolved inorganic carbon (DIC) fixation below the sunlit surface layer.
Barbara Bayer +7 more
semanticscholar +2 more sources
Sulfur oxidizers dominate carbon fixation at a biogeochemical hot spot in the dark ocean [PDF]
The ISME Journal, 2013 Abstract Bacteria and archaea in the dark ocean (>200 m) comprise 0.3–1.3 billion tons of actively cycled marine carbon. Many of these microorganisms have the genetic potential to fix inorganic carbon (autotrophs) or assimilate single-carbon compounds (methylotrophs).
Timothy E, Mattes +8 more
openaire +3 more sources
Contribution of Carbon Fixation Toward Carbon Sink in the Ocean Twilight Zone
Geophysical Research Letters, 2022 Dark carbon (C) fixation in the ocean twilight zone plays a crucial role toward C sink, but its potential has not been tested sufficiently in experiments.
Himanshu Saxena +7 more
doaj +1 more source
Malate Synthesis by Dark Carbon Dioxide Fixation in Leaves [PDF]
Plant Physiology, 1978 The rates of dark CO(2) fixation and the label distribution in malate following dark (14)CO(2) fixation in a C-4 plant (maize), a C-3 plant (sunflower), and two Crassulacean acid metabolism plants (Bryophyllum calycinum and Kalanchoë diagremontianum leaves and plantlets) are compared.
C, Levi, J T, Perchorowicz, M, Gibbs
openaire +2 more sources
A source of isotopically light organic carbon in a low-pH anoxic marine zone
Nature Communications, 2021 Anoxic marine zones are expanding and intensifying with climate change. Here the authors show that microbial dark carbon fixation influences the carbonate system and the stable isotope composition in waters off Chile, contributing up to 35% of the ...
Cristian A. Vargas +11 more
doaj +1 more source
Dark Diazotrophy during the Late Summer in Surface Waters of Chile Bay, West Antarctic Peninsula
Microorganisms, 2022 Although crucial for the addition of new nitrogen in marine ecosystems, dinitrogen (N2) fixation remains an understudied process, especially under dark conditions and in polar coastal areas, such as the West Antarctic Peninsula (WAP). New measurements of
María E. Alcamán-Arias +10 more
doaj +1 more source
Temperature sensitivity of dark CO2 fixation in temperate forest soils [PDF]
Biogeosciences, 2022 Globally, soil temperature to 1 m depth is predicted to be up to 4 ∘C warmer by the end of this century, with pronounced effects expected in temperate forest regions.
R. Akinyede +6 more
doaj +1 more source
Under Ice Photosynthetic Primary Production and Dark Carbon Fixation in a Temperate Freshwater System [PDF]
, 2023 Ice-covered lakes are vulnerable to environmental change, especially those in the Northern Hemisphere where ice cover is rapidly declining due to global warming.
Cubillos Tellez, Vanessa
core +1 more source