Results 51 to 60 of about 2,851,212 (303)

Direct and indirect costs of dinitrogen fixation in Crocosphaera watsonii WH8501 and possible implications for the nitrogen cycle

Frontiers in Microbiology, 2012
The recent detection of heterotrophic nitrogen (N2) fixation in deep waters of the southern Californian and Peruvian OMZ questions our current understanding of marine N2 fixation as a process confined to oligotrophic surface waters of the oceans.
Tobias eGroßkopf, Julie eLaRoche
doaj   +1 more source

Major role of microbes in carbon fluxes during Austral winter in the Southern Drake Passage. [PDF]

PLoS ONE, 2009
Carbon cycling in Southern Ocean is a major issue in climate change, hence the need to understand the role of biota in the regulation of carbon fixation and cycling.
Maura Manganelli, Francesca Malfatti, Ty J Samo, B Greg Mitchell, Haili Wang, Farooq Azam   +5 more
doaj   +1 more source

Critical Role of Light in the Growth and Activity of the Marine N2-Fixing UCYN-A Symbiosis

Frontiers in Microbiology, 2021
The unicellular N2-fixing cyanobacteria UCYN-A live in symbiosis with haptophytes in the Braarudosphaera bigelowii lineage. Maintaining N2-fixing symbioses between two unicellular partners requires tight coordination of multiple biological processes ...
Marine Landa, Kendra A. Turk-Kubo, Francisco M. Cornejo-Castillo, Britt A. Henke, Jonathan P. Zehr   +4 more
doaj   +1 more source

An ATP-sensitive phosphoketolase regulates carbon fixation in cyanobacteria

Nature Metabolism, 2023
Regulation of CO2 fixation in cyanobacteria is important both for the organism and global carbon balance. Here we show that phosphoketolase in Synechococcus elongatus PCC7942 (SeXPK) possesses a distinct ATP-sensing mechanism, where a drop in ATP level ...
Kuan-Jen Lu, Chiung-Wen Chang, Chun-Hsiung Wang, Frederic Y.-H. Chen, Irene Y. Huang, Pin-Hsuan Huang, Cheng-Han Yang, Hsiang-Yi Wu, Wen-Jin Wu, Kai-Cheng Hsu, M. Ho, M. Tsai, James C. Liao   +12 more
semanticscholar   +1 more source

Nitrogen fixation in the western English Channel (NE Atlantic Ocean) [PDF]

, 2009
In temperate Atlantic waters (18.8 to 20.1°C), biological nitrogen fixation has beendemonstrated by 2 independent measurements: 15N-N2 incorporation and nifH identification in theDNA and expressed messenger RNA (mRNA).
Kelly-Gerreyn, BA, Kelly-Gerreyn, Boris A., Gilbert, JA, Gilbert, Jack A., Rees, AP, Rees, Andrew P.   +5 more
core   +1 more source

Prokaryotic responses to ammonium and organic carbon reveal alternative CO2 fixation pathways and importance of alkaline phosphatase in the mesopelagic North Atlantic

Frontiers in Microbiology, 2016
To decipher the response of mesopelagic prokaryotic communities to input of nutrients, we tracked changes in prokaryotic abundance, extracellular enzymatic activities, heterotrophic production, dark dissolved inorganic carbon (DIC) fixation, community ...
Federico Baltar, Federico Baltar, Daniel Lundin, Joakim Palovaara, Itziar Lekunberri, Thomas Reinthaler, Gerhard Josef Herndl, Jarone Pinhassi   +7 more
doaj   +1 more source

Offsetting of CO₂ emissions by air capture in mine tailings at the Mount Keith Nickel Mine, Western Australia: Rates, controls and prospects for carbon neutral mining [PDF]

, 2014
The hydrated Mg-carbonate mineral, hydromagnesite [Mg₅(CO₃)₄(OH)₂•4H₂O], precipitates within mine tailings at the Mount Keith Nickel Mine, Western Australia as a direct result of mining operations.
K. Ulrich Mayer, Stewart J. Fallon, Fallon, Stewart J., Harrison, Anna L, Barker, Shaun L.L., Mati Raudsepp, Barker, Shaun L L, Ian M. Power, Gordon Southam, Shaun L.L. Barker, Gregory M. Dipple, Power, Ian M., Wilson, Siobhan A., Power, Ian M, Fallon, Stewart, Wilson, Siobhan A, Dipple, Greg, Raudsepp, Mati, Ulrich Mayer, K., Southam, Gordon, Mayer, K Ulrich, Sasha Wilson, Anna L. Harrison, Barker, Shaun L. L., Harrison, Anna L., Dipple, Gregory M.   +25 more
core   +2 more sources

Dark carbon fixation in the Arabian Sea oxygen minimum zone contributes to sedimentary organic carbon (SOM)

Global Biogeochemical Cycles, 2019
In response to rising CO2 concentrations and increasing global sea surface temperatures, oxygen minimum zones (OMZ), or “dead zones”, are expected to expand.
S. Lengger, D. Rush, J. Mayser, J. Blewett, R. Schwartz-Narbonne, H. Talbot, J. Middelburg, M. Jetten, S. Schouten, J. S. Sinninghe Damsté, R. Pancost   +10 more
semanticscholar   +1 more source

The production of dissolved organic carbon by macroalgae and its consumption by marine bacteria: Implications for coastal ecosystems

Frontiers in Marine Science, 2022
Through the fixation of large quantities of dissolved inorganic carbon (DIC), macroalgae facilitate the energetic foundation of highly productive coastal ecosystems.
Jack R. Hall, Gerli Albert, Isla M. Twigg, Federico Baltar, Christopher D. Hepburn, Christopher D. Hepburn, Georg Martin   +6 more
doaj   +1 more source

Optimization and Process Effect for Microalgae Carbon Dioxide Fixation Technology Applications Based on Carbon Capture: A Comprehensive Review [PDF]

, 2023
Microalgae carbon dioxide (CO2) fixation technology is among the effective ways of environmental protection and resource utilization, which can be combined with treatment of wastewater and flue gas, preparation of biofuels and other technologies, with ...
Tenglun Yang, Li, Gang, Gang Li, Tao Lyu, Lyu, Tao, Yang, Tenglun, Wenbo Xiao, Xiao, Wenbo   +7 more
core   +1 more source