Results 11 to 20 of about 2,851,212 (303)

Dark carbon fixation is a common process in the water column of stratified boreal lakes.

Science of The Total Environment
CO2 fixation (i.e. primary production) is a key function of all ecosystems, providing the carbon and energy that fuel the entire food web. It also plays an important role in mitigating climate change as CO2 is the most important greenhouse gas.
Gaëtan Martin, A. Rissanen, S. Garcia, Sari Peura   +3 more
semanticscholar   +7 more sources

The Underestimated Importance of Dark Carbon Fixation to Primary Productivity in Lake Kinneret

Water Science and Technology, 1993
The rates of light and dark 14CO2 fixation by natural phytoplankton communities in Lake Kinneret were studied in situ and in vivo in the laboratory. Dark fixation (DF) contributed an important part of the total primary productivity in Lake Kinneret.
Barbara Butow, Ronny Herzig
exaly   +3 more sources

Bacterioplankton dark CO₂ fixation in oligotrophic waters [PDF]

Biogeosciences, 2023
Dark CO2 fixation by bacteria is believed to be particularly important in oligotrophic ecosystems. However, only a few studies have characterized the role of bacterial dissolved inorganic carbon (DIC) fixation in global carbon dynamics.
A. Alothman, D. López-Sandoval, D. López-Sandoval, C. M. Duarte, S. Agustí   +4 more
doaj   +2 more sources

Abundant and metabolically flexible bacterial lineages underlie a vast potential for rubisco-mediated carbon fixation in the dark ocean

Genome Biology
Background Rubisco is among the most abundant enzymes on Earth and is a critical conduit for inorganic carbon into the biosphere. Despite this, the full extent of rubisco diversity and the biology of organisms that employ it for carbon fixation are still
Alexander L. Jaffe, Rebecca S. R. Salcedo, Anne E. Dekas   +2 more
doaj   +2 more sources

Major contribution of anaplerosis to inorganic carbon fixation in the dark ocean. [PDF]

Nat Geosci
Abstract While CO 2 fixation by photo- and chemolithoautotrophs is a central process of the global carbon cycle, many organisms also incorporate inorganic carbon into organic compounds through anaplerotic carbon fixation, a process that replenishes intermediates of central ...
Amano C, Willhelm U, Koch T, Reinthaler T, Hansman RL, Sintes E, Herndl GJ, González JM, Baltar F.   +8 more
europepmc   +2 more sources

Is dark carbon fixation relevant for oceanic primary production estimates? [PDF]

, 2019
. About half of the global primary production (PP) is generated in the euphotic layer of the ocean. The 14C method developed by Steemann-Nielsen (Nielsen, 1952) more than half a century ago has been the most frequently used method to determine PP in all ...
F. Baltar, G. Herndl
semanticscholar   +2 more sources

Tide-driven biogeochemical gradient shapes the vertical profile of dark carbon fixation in intertidal wetlands

Geoderma
Dark carbon fixation (DCF) is recognized as a vital carbon sink process in the biogeochemical cycle of coastal wetlands. Tidal hydrodynamic dynamics in intertidal wetlands significantly affect the physicochemical conditions, yet their impacts on DCF ...
Bin Wang, Yanling Zheng, Bolin Liu, Xinyu Wang, Lin Qi, Sai Yang, Jie Zhou, Zhirui An, Jiawei Zhang, Min Liu, Lijun Hou   +10 more
doaj   +3 more sources

Substantial dark carbon fixation contributes to carbon sink in human-impacted estuarine and coastal waters

Anthropocene Coasts
Dark carbon fixation (DCF) is an integral component of the global carbon sink. However, quantitative data on its contribution to total carbon fixation in estuaries are scarce, and factors driving DCF remain under exploration.
Hongpo Dong
exaly   +2 more sources

Anaplerotic processes are key contributors to dark carbon fixation in the ocean

Abstract Anaplerotic carbon fixation is ubiquitous in heterotrophic organisms including those inhabiting the ocean1. Despite its prevalence, the drivers of this process and its significance in ocean carbon cycling remain poorly understood2,3. Here we combined global ocean metatranscriptomic analysis, laboratory experiments on a bacterial model ...
Amano C, Willhelm U, Koch T, Reinthaler T, Hansman R, Sintes E, Herndl G, González J, Baltar F.   +8 more
europepmc   +2 more sources

Soil Microbes Transform Inorganic Carbon Into Organic Carbon by Dark Fixation Pathways in Desert Soil

Journal of Geophysical Research: Biogeosciences, 2020
Soil inorganic carbon (SIC) represents the main soil carbon pool in drylands with a high geologic residence time for carbon sequestration. Recent studies have shown that SIC is not stable as previously supposed, and can be employed by certain microbes ...
Zhen Liu, Yan-Fei Sun, Yu-Qing Zhang, W. Feng, Z. Lai, Shu-gao Qin   +5 more
semanticscholar   +2 more sources