Results 1 to 10 of about 43,240 (245)

Dark carbon fixation: an important process in lake sediments. [PDF]

PLoS ONE, 2013
Close to redox boundaries, dark carbon fixation by chemoautotrophic bacteria may be a large contributor to overall carbon fixation. Still, little is known about the relative importance of this process in lake systems, in spite the potentially high ...
Ana Lúcia Santoro, David Bastviken, Cristian Gudasz, Lars Tranvik, Alex Enrich-Prast   +4 more
doaj   +8 more sources

Dark Carbon Fixation Measurements in the East Sea (Sea of Japan)

Journal of Marine Science and Engineering
The vertical distribution patterns of daily primary production and dark carbon fixation were investigated at three stations in the East/Japan Sea (hereafter East Sea), a semi-enclosed marginal sea in the northwest Pacific Ocean.
Hyo-Keun Jang, Seok-Hyun Youn, Huitae Joo, Jae-Joong Kang, Kwanwoo Kim, Sanghoon Park, Jaesoon Kim, Yejin Kim, Myeongseop Kim, Sungjun Kim, Sang-Heon Lee   +10 more
doaj   +4 more sources

A Cross-System Comparison of Dark Carbon Fixation in Coastal Sediments. [PDF]

Global Biogeochem Cycles, 2020
AbstractDark carbon fixation (DCF) by chemoautotrophic microorganisms can sustain food webs in the seafloor by local production of organic matter independent of photosynthesis. The process has received considerable attention in deep sea systems, such as hydrothermal vents, but the regulation, depth distribution, and global importance of coastal ...
Vasquez-Cardenas D, Meysman FJR, Boschker HTS.   +2 more
europepmc   +7 more sources

Ubiquitous Gammaproteobacteria dominate dark carbon fixation in coastal sediments. [PDF]

ISME J, 2016
Abstract Marine sediments are the largest carbon sink on earth. Nearly half of dark carbon fixation in the oceans occurs in coastal sediments, but the microorganisms responsible are largely unknown. By integrating the 16S rRNA approach, single-cell genomics, metagenomics and transcriptomics with 14C-carbon assimilation experiments, we ...
Dyksma S, Bischof K, Fuchs BM, Hoffmann K, Meier D, Meyerdierks A, Pjevac P, Probandt D, Richter M, Stepanauskas R, Mußmann M.   +10 more
europepmc   +7 more sources

Chemoautotrophic carbon fixation in thermokarst lakes on the Tibetan Plateau [PDF]

Nature Communications
Dissolved organic carbon (DOC) derived from thermokarst lakes is usually considered to be prone to microbial degradation and releases substantial carbon dioxide to the atmosphere, potentially enhancing the positive permafrost carbon (C)-climate feedback.
Futing Liu, Luyao Kang, Ziliang Li, Josep Peñuelas, Benjamin W. Abbott, Weijie Xu, Wei Zhou, Xuning Liu, Leiyi Chen, Shuqi Qin, Dianye Zhang, Yunfeng Peng, Yuanhe Yang   +12 more
doaj   +2 more sources

Morphological Plasticity in a Sulfur-Oxidizing Marine Bacterium from the SUP05 Clade Enhances Dark Carbon Fixation [PDF]

mBio, 2019
Sulfur-oxidizing bacteria from the SUP05 clade are abundant in anoxic and oxygenated marine waters that appear to lack reduced sources of sulfur for cell growth.
Vega Shah, Xiaowei Zhao, Rachel A. Lundeen, Anitra E. Ingalls, Daniela Nicastro, Robert M. Morris   +5 more
doaj   +2 more sources

Four years of climate warming reduced dark carbon fixation in coastal wetlands. [PDF]

ISME J
Abstract Dark carbon fixation (DCF), conducted mainly by chemoautotrophs, contributes greatly to primary production and the global carbon budget. Understanding the response of DCF process to climate warming in coastal wetlands is of great significance for model optimization and climate change prediction.
Liu B, Qi L, Zheng Y, Zhang C, Zhou J, An Z, Wang B, Lin Z, Yao C, Wang Y, Yin G, Dong H, Li X, Liang X, Han P, Liu M, Zhang G, Cui Y, Hou L.   +18 more
europepmc   +3 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

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

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   +2 more sources