Results 81 to 90 of about 363 (122)

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   +1 more source

Linking microbial community structure to biogeochemical function in coastal marine sediments: Stable isotope probing combined with magnetic bead capture [PDF]

, 2011
Microbial community structure and its biogeochemical functions in marine sediments can be successfully linked by using the improved Mag-SIP method in combination with other approaches.
Miyatake, T.
core   +1 more source

Chemolithoautotrophic production mediating the cycling of the greenhouse gases N₂O and CH₄ in an upwelling ecosystem

, 2009
International audienceThe high availability of electron donors occurring in coastal upwelling ecosystems with marked oxyclines favours chemoautotrophy, in turn leading to high N 2 O and CH 4 cycling associated with aerobic NH + 4 (AAO) and CH 4 oxidation
Fernandez, Camila I., Farías, L., Cornejo, M., Alcaman, M., Faúndez, J.   +4 more
core   +1 more source

Array of metabolic pathways in a kleptoplastidic foraminiferan protist supports chemoautotrophy in dark, euxinic seafloor sediments

The ISME Journal
Abstract Investigations of the metabolic capabilities of anaerobic protists advances our understanding of the evolution of eukaryotic life on Earth and for uncovering analogous extraterrestrial complex microbial life. Certain species of foraminiferan protists live in environments analogous to early Earth conditions when eukaryotes ...
Gomaa, Fatma, Rogers, Daniel R, Utter, Daniel R, Powers, Christopher, Huang, I-ting, Beaudoin, David J, Zhang, Ying, Cavanaugh, Colleen, Edgcomb, Virginia P, Bernhard, Joan M   +9 more
openaire   +2 more sources

A novel symbiosis between chemoautotrophic bacteria and a freshwater cave amphipod

, 2009
Symbioses involving animals and chemoautotrophic bacteria form the foundation of entire ecosystems at deep-sea hydrothermal vents and cold seeps, but have so far not been reported in terrestrial or freshwater environments. A rare example of a terrestrial
Sharmishtha Dattagupta, Macalady, Jennifer L., Schaperdoth, Irene, Noriko Kita, Montanari, Alessandro, Mariani, Sandro, Valley, John W., Sandro Mariani, Jennifer L Macalady, Kita, Noriko, Alessandro Montanari, Irene Schaperdoth, Dattagupta, Sharmishtha, John W Valley   +13 more
core   +1 more source

Inorganic carbon assimilation by planktonic community in Santos Basin, Southwestern Atlantic Ocean

Ocean and Coastal Research
Primary production is essential in shaping biogeochemical cycles and microbial and ecosystem dynamics. The distribution of chemosynthetic rates in pelagic zones and their participation in the carbon cycle, especially when compared to photosynthetic ...
Deborah S. Kutner, Jeff S. Bowman, Flávia M. P. Saldanha-Corrêa, Mateus G. Chuqui, Pedro M. Tura, Daniel L. Moreira, Frederico P. Brandini, Camila N. Signori   +7 more
doaj   +2 more sources

Electrochemical potential and membrane properties of methanogenic bacteria

, 1984
NRC publication ...
Jarrell, K., Sprott, G.
core   +1 more source

The biogeochemistry of the suboxic and anoxic zones in the cariaco basin Biogeoquímica de las zonas subóxica y anóxica en la fosa de cariaco

Gayana, 2006
A decade-long study of the Cariaco Basin has demonstrated that the suboxic interface in this system is temporally and spatially variable and that it is the home for a diverse and active microbial community. The thickness and structure of the suboxic zone
Mary I Scranton, Yrene Astor, Dane Percy, Li Xiaona, Lin Xueju, Gordon T Taylor   +5 more
doaj  

Substantial genetic potential for deep-sea chemoautotrophy extends beyond nitrifiers

I. Abstract Microbial chemoautotrophy in the deep sea has the potential to sustain ecosystems at depth, contribute to global carbon sequestration, and ameliorate the currently unbalanced deep-sea carbon budget. However, an understanding of its mechanisms and feasibility is still emerging, particularly beyond that fueled ...
Rebecca S. R. Salcedo, Alexander L. Jaffe, Anne E. Dekas   +2 more
openaire   +1 more source

Characterize the Growth and Metabolism of Acidithiobacillus ferrooxidans under Electroautotrophic and Chemoautotrophic Conditions

Microorganisms
Acidophiles are capable of surviving in extreme environments with low pH. Acidithiobacillus ferrooxidans is a typical acidophilic bacterium that has been extensively studied when grown chemoautotrophically, i.e., when it derives energy from oxidation of ...
Quansheng Wang, Haijun Long, Huiqi Wang, Maggie C. Y. Lau Vetter   +3 more
doaj   +1 more source