K
Karen Junge
Researcher at University of Washington
Publications - 23
Citations - 1791
Karen Junge is an academic researcher from University of Washington. The author has contributed to research in topics: Sea ice & Psychrophile. The author has an hindex of 15, co-authored 23 publications receiving 1654 citations. Previous affiliations of Karen Junge include Johns Hopkins University Applied Physics Laboratory.
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Bacterial Activity at −2 to −20°C in Arctic Wintertime Sea Ice
TL;DR: Measuring activity down to −20°C adds to the concept that liquid inclusions in frozen environments provide an adequate habitat for active microbial populations on Earth and possibly elsewhere.
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High concentrations of exopolymeric substances in Arctic winter sea ice: implications for the polar ocean carbon cycle and cryoprotection of diatoms
TL;DR: In this article, the authors used macroscopic and microscopic approaches to study the content and possible ecological role of exopolymeric substances (EPSs) produced by microorganisms in various aquatic, porous, and extreme environments.
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Phylogenetic diversity of numerically important Arctic sea-ice bacteria cultured at subzero temperature.
TL;DR: Overall, these findings suggest limited, heterotrophic bacterial diversity at cold temperatures and may provide insight into the recent evolution of psychrophilic bacteria.
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Molecular and biogeochemical evidence for methane cycling beneath the western margin of the Greenland Ice Sheet
Markus Dieser,Erik L J E Broemsen,Karen A. Cameron,Gary M. King,Amanda M. Achberger,Kyla Choquette,Birgit Hagedorn,R. S. Sletten,Karen Junge,Brent C. Christner +9 more
TL;DR: The results support the occurrence of active methane cycling beneath this region of the Greenland Ice Sheet, where microbial communities poised in oxygenated subglacial drainage channels could serve as significant methane sinks.
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A microscopic approach to investigate bacteria under in situ conditions in sea-ice samples
TL;DR: A new method allowing for microscopic observations of bacteria localized within the three-dimensional network of brine inclusions in sea ice under in situ conditions is described, which may ultimately aid in discerning constraints on microbial life at extremely low temperatures.