Results 51 to 60 of about 1,271,647 (216)

Hydroxylamine as an intermediate in ammonia oxidation by globally abundant marine archaea [PDF]

open access: yesProceedings of the National Academy of Sciences, 2012
The ammonia-oxidizing archaea have recently been recognized as a significant component of many microbial communities in the biosphere. Although the overall stoichiometry of archaeal chemoautotrophic growth via ammonia (NH 3 ) oxidation to nitrite (NO 2 −
Neeraja, Vajrala   +6 more
openaire   +2 more sources

Diel Patterns in the Composition and Activity of Planktonic Microbes in a Subtropical Bay

open access: yesOcean-Land-Atmosphere Research
Planktonic microbes play a crucial role in the matter transformation and energy transfer of marine ecosystems. Marine microbial communities are profoundly influenced by various environmental factors, and their variations are typically investigated in a ...
Songze Chen   +11 more
doaj   +1 more source

Marine Institute's Monitoring Programme for Contaminants in Fish and Shellfish [PDF]

open access: yes, 2006
The Marine Institute monitors the levels of priority hazardous substances in a range of commercial fish species landed at Irish ports and also in shellfish from selected sites around the Irish coast.Funder: Marine ...
Marine Institute
core   +1 more source

Bacteria and Archaea Regulate Particulate Organic Matter Export in Suspended and Sinking Marine Particle Fractions

open access: yesmSphere, 2023
The biological carbon pump (BCP) in the Southern Ocean is driven by phytoplankton productivity and is a significant organic matter sink. However, the role of particle-attached (PA) and free-living (FL) prokaryotes (bacteria and archaea) and their ...
Choaro D. Dithugoe   +5 more
doaj   +1 more source

Marine archaea take a short cut in the nitrogen cycle [PDF]

open access: yesProceedings of the National Academy of Sciences, 2012
Seeing “nitrification” and “Archaea” in the title of the paper in PNAS by Alonso-Saez et al. (1) will not surprise anyone following the story about the role of these microbes in an important pathway of the nitrogen cycle. What will puzzle, if not surprise, everyone is the other key word, “urea.” That nitrogenous compound never comes up in discussions ...
openaire   +2 more sources

Heterotrophic Thaumarchaea with Small Genomes Are Widespread in the Dark Ocean

open access: yesmSystems, 2020
The Thaumarchaeota is a diverse archaeal phylum comprising numerous lineages that play key roles in global biogeochemical cycling, particularly in the ocean.
Frank O. Aylward, Alyson E. Santoro
doaj   +3 more sources

Engineering Microbial Particles for Next‐Generation Biomedical Platforms

open access: yesAdvanced Science, EarlyView.
Microbe‐derived particles (MDPs), which include extracellular vesicles, outer membrane vesicles, inclusion bodies, polysaccharide particles, and virus‐like particles, represent a rapidly expanding category of bioinspired nanomaterials. With their natural origin, intrinsic biocompatibility, and highly programmable functionality, MDPs serve as a ...
Yuting Li   +7 more
wiley   +1 more source

Influences of soil properties on archaeal diversity and distribution in the McMurdo Dry Valleys, Antarctica [PDF]

open access: yes, 2011
The Antarctic Dry Valleys are characterized by extremely low temperatures, arid conditions, high salinity and virtual absence of plants. Therefore, food webs of these microbially dominated soils are among the simplest on earth making these mineral soils ...
Richter, Ingrid
core  

Two-hourly resolved microbial and viral dynamics in the subtropical Daya Bay

open access: yesScientific Data
Planktonic microbial and viral communities are fundamental drivers of biogeochemical cycling and energy flow in marine ecosystems. These communities display substantial variability in their composition at daily to sub-daily scales, which cannot be ...
Songze Chen   +9 more
doaj   +1 more source

Carrion ecology: concepts, interdisciplinary synthesis, and perspectives

open access: yesBiological Reviews, EarlyView.
ABSTRACT Carrion is a ubiquitous resource in both terrestrial and aquatic ecosystems, yet it has long been overlooked in ecological research. Over the past two decades, studies on carrion and the many organisms that exploit it have flourished, revealing not only wide‐ranging ecological functions but also significance far beyond ecology.
Marcos Moleón   +38 more
wiley   +1 more source

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