Browsing Oceanography by Subject "Microbiology"
Now showing items 1-9 of 9
-
Acquisition, degradation, and cycling of organic matter within sea-ice brines by bacteria and their viruses
Marine dissolved organic carbon (DOC) is a major component of the global carbon pool, and thus can have significant effects on global carbon cycling. Within the oceans, DOC is largely regulated by microbial communities, ... -
Ecological and evolutionary strategies of archaeal, bacterial, and viral communities in deep-sea hydrothermal vents
(2014-02-24)The deep-sea hydrothermal vent habitat, formed by subsurface water-rock reactions that create high-temperature hydrothermal fluid, is dominated by physical, chemical, and mineralogical gradients. The mixing of cold, oxidized ... -
Elucidating the metabolic activities of SUP05, an abundant group of marine sulfur oxidizing gamma-proteobacteria
Chemoautotrophic bacteria that oxidize sulfur and reduce nitrogen in low oxygen zones carry out chemical transformations of molecules containing the key elements: carbon, nitrogen and sulfur. Members of the SUP05 clade of ... -
Life in the cold biosphere: The ecology of psychrophile communities, genomes, and genes
The prevalence of low temperature habitats on Earth makes the ecology of organisms adapted to low temperature environments (psychrophiles) an important area of research. Studies of low temperature ecosystems including the ... -
Microbial Challenges and Solutions to Inhabiting the Dynamic Architecture of Saline Ice Formations
(2013-11-14)Sea ice contains a microscopic network of brine inclusions effectively colonized by organisms from the three major clades of life. The architecture of this brine channel network is dynamic, with surface area, brine volume ... -
Microbial evolution and ecology in subzero hypersaline environments
Microbial life, particularly prokaryotic life, is prevalent in the extreme polar settings of cryopeg and sea ice brines. Cryopegs are unfrozen layers, found in Arctic permafrost below the active layer, that are composed ... -
Quantifying the response of diatom nitrogen metabolism to environmental changes
(2013-11-14)Diatoms are microscopic unicellular organisms that fix as much carbon annually as all terrestrial rainforests combined and, through nitrogen uptake and carbon drawdown, link global carbon and nitrogen cycles. As the most ... -
Shifting role of chemoautotrophic SUP05 bacteria in nitrogen, sulfur and carbon cycles across oxygen gradients in marine environments
Microbes make up a large percentage of the biomass within marine environments and play a key role in cycling of biogeochemical cycles. Despite this, majority of important species of bacteria and archaea remain poorly ... -
Untangling Genomes from Metagenomes
Abundant and evolutionarily diverse populations of microbes dramatically shape the ecology of every marine environment on Earth. While it is straightforward to detect and classify members of these natural communities using ...