Results 11 to 20 of about 363 (122)
Chemoautotrophy at Deep-Sea Vents: Past, Present, and Future [PDF]
Oceanography, 2012 Chemolithoautotrophic microorganisms are at the nexus of hydrothermal systems by effectively transferring the energy from the geothermal source to the higher trophic levels.
Stefan M. Sievert, Costantino Vetriani
doaj +6 more sources
Bacterial chemoautotrophy in coastal sediments [PDF]
, 2016 A key process in the biogeochemistry of coastal sediments is the reoxidation of reduced intermediates formed during anaerobic mineralization which in part is performed by chemoautotrophic bacteria. These bacteria fix inorganic carbon using the energy derived from reoxidation reactions.
Vasquez Cardenas, D.
core +12 more sources
Discovery of symbiotic nitrogen fixation and chemoautotrophy in cold-water corals [PDF]
Scientific Reports, 2015 AbstractCold-water corals (CWC) are widely distributed around the world forming extensive reefs at par with tropical coral reefs. They are hotspots of biodiversity and organic matter processing in the world’s deep oceans. Living in the dark they lack photosynthetic symbionts and are therefore considered to depend entirely on the limited flux of organic
Middelburg, Jack J. +5 more
core +11 more sources
Ocean and Coastal Research, 2022 Dark carbon fixation (DCF) is a source of new and labile carbon in the deep ocean, while heterotrophic microbial production (HMP) promotes organic matter transfer through the microbial loop. Despite their ecological relevance, there is a scientific gap regarding the estimates of DCF and HMP in the Southwestern Atlantic Ocean.
Julia Gasparini Passos +6 more
openaire +5 more sources
Chemoautotrophic growth of ammonia-oxidizing Thaumarchaeota enriched from a pelagic redox gradient in the Baltic Sea [PDF]
Frontiers in Microbiology, 2015 Ammonia-oxidizing archaea (AOA) are an important component of the planktonic community in aquatic habitats, linking nitrogen and carbon cycles through nitrification and carbon fixation.
Carlo eBerg +5 more
doaj +2 more sources
Life, 2019 Terrestrial hot springs have provided a niche space for microbial communities throughout much of Earth’s history, and evidence for hydrothermal deposits on the Martian surface suggest this could have also been the case for the red planet.
Jeff R. Havig, Trinity L. Hamilton
doaj +2 more sources
Chemoautotrophic carbon fixation rates and active bacterial communities in intertidal marine sediments. [PDF]
PLoS ONE, 2014 Chemoautotrophy has been little studied in typical coastal marine sediments, but may be an important component of carbon recycling as intense anaerobic mineralization processes in these sediments lead to accumulation of high amounts of reduced compounds,
Henricus T S Boschker +4 more
doaj +3 more sources
Scientific Reports, 2022 The molluscs Lucinoma capensis, Lembulus bicuspidatus and Nassarius vinctus are highly abundant in Namibian oxygen minimum zone sediments. To understand which nutritional strategies allow them to reach such impressive abundances in this extreme habitat ...
K. Amorim +9 more
doaj +4 more sources
Anomalous δ13C in Particulate Organic Carbon at the Chemoautotrophy Maximum in the Cariaco Basin [PDF]
Journal of Geophysical Research: Biogeosciences, 2020 AbstractA chemoautotrophy maximum is present in many anoxic basins at the sulfidic layer's upper boundary, but the factors controlling this feature are poorly understood. In 13 of 31 cruises to the Cariaco Basin, particulate organic carbon (POC) was enriched in 13C (δ13CPOC as high as −16‰) within the oxic/sulfidic transition compared to photic zone ...
Mary I. Scranton +7 more
openaire +3 more sources
Sulfur (34S/32S) isotope composition of gypsum and implications for deep cave formation on the Nullarbor Plain, Australia [PDF]
International Journal of Speleology, 2019 Large deep caves with little relation to surface topography are distinctive karst features on the Nullarbor Plain of Australia. The presence of gypsum deposits and chemoautotrophic bacteria within the caves have been suggested as evidence for cave ...
Matej Lipar +3 more
doaj +2 more sources