R
Roland Psenner
Researcher at University of Innsbruck
Publications - 139
Citations - 9218
Roland Psenner is an academic researcher from University of Innsbruck. The author has contributed to research in topics: Phytoplankton & Climate change. The author has an hindex of 52, co-authored 138 publications receiving 8604 citations.
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Determination of Bacterial Cell Dry Mass by Transmission Electron Microscopy and Densitometric Image Analysis
TL;DR: Transmission electron microscopy and densitometric image analysis was applied to measure the cell volume and dry weight of single bacterial cells to suggest that bacterial biomass in aquatic environments is higher and more variable than previously assumed from volume-based measurements.
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Bacterial growth in supercooled cloud droplets
TL;DR: In this paper, it is shown that bacteria in cloud droplets collected at high altitudes are actively growing and reproducing at temperatures at or below 0°C, and that since ∼60% of the earth surface is covered by clouds, cloud water should be considered as a microbial habitat.
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An in situ hybridization protocol for detection and identification of planktonic bacteria
Frank Oliver Glöckner,Rudolf Amann,Albin Alfreider,Jakob Pernthaler,Roland Psenner,Karl-Heinz Trebesius,Karl-Heinz Schleifer +6 more
TL;DR: In this article, the fraction of planktonic bacteria in oligo- and mesotrophic lakes that can be classified by in situ hybridization has been significantly increased with an optimized protocol.
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Seasonal Community and Population Dynamics of Pelagic Bacteria and Archaea in a High Mountain Lake
Jakob Pernthaler,Frank Oliver Glöckner,Stefanie Unterholzner,Albin Alfreider,Roland Psenner,Rudolf Amann +5 more
TL;DR: The bacterial populations studied were annually recurrent, seasonally variable, and vertically stratified, except during the periods of lake overturn, suggesting that the apparent stability of total bacterioplankton abundances may mask highly dynamic community fluctuations.
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High microbial activity on glaciers: importance to the global carbon cycle
TL;DR: The results suggest that glaciers, which contain 75% of the freshwater of the planet, are largely autotrophic systems, but most lakes and rivers are generally considered as heterotrophic Systems.