1,753,021 research outputs found
The subzero microbiome: Microbial activity in frozen and thawing soils
No full textMost of the Earth's biosphere is characterized by low temperatures (<5 °C) and cold-adapted microorganisms are widespread. These psychrophiles have evolved a complex range of adaptations of all cellular constituents to counteract the potentially deleterious effects of low kinetic energy environments and the freezing of water. Microbial life continues into the subzero temperature range, and this activity contributes to carbon and nitrogen flux in and out of ecosystems, ultimately affecting global processes. Microbial responses to climate warming and in particular, thawing of frozen soils are not yet well understood although the threat of microbial contribution to positive feedback of carbon flux is substantial. To date, several studies have examined microbial community dynamics in frozen soils and permafrost due to changing environmental conditions, and some have undertaken the complicated task of characterizing microbial functional groups and how their activity changes with changing conditions, either in situ or by isolating and characterizing macromolecules. With increasing temperature and wetter conditions microbial activity of key microbes and subsequent efflux of greenhouse gases also increase. In this review, we aim to provide an overview of microbial activity in seasonally frozen soils and permafrost. With a more detailed understanding of the microbiological activities in these vulnerable soil ecosystems, we can begin to predict and model future expectations for carbon release and climate change.Peer reviewe
Lee, J (John), WX9214
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/398919Surname: LEE. Given Name(s) or Initials: J (JOHN). Military Service Number or Last Known Location: WX9214. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 38585.216271
Item: [2016.0049.31212] "Lee, J (John), WX9214
Lee, J S, 421602
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/398842Surname: LEE. Given Name(s) or Initials: J S. Military Service Number or Last Known Location: 421602. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 49835.216112
Item: [2016.0049.31135] "Lee, J S, 421602
Lee, J, NX7156
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/398886Surname: LEE. Given Name(s) or Initials: J. Military Service Number or Last Known Location: NX7156. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 5884.216203
Item: [2016.0049.31179] "Lee, J, NX7156
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