Data on the growth rates and specific cellulase activities of 10 isolates of the fungus Pseudogymnoascus roseus from sub- and maritime Antarctica, exposed in vitro to fluctuating temperatures of 2-15 degrees Celsius, 2-18 degrees Celsius, 2-21 degrees Celsius and 2-24 degrees Celsius and their corresponding mean constant temperatures of 9.0 degrees Celsius, 10.7, 12.0 or 13.1 degrees Celsius, respectively, and constant temperatures of 2 degrees Celsius, 5.5 degrees Celsius, 8.5 degrees Celsius, 15.0 degrees Celsius, 18.0 degrees Celsius, 21.0 degrees Celsius and 24.0 degrees Celsius. Funding: UK Natural Environment Research Council (core funding to the British Antarctic Survey).

Data on the growth rates and specific cellulase activities of 10 isolates of the fungus Pseudogymnoascus roseus from sub- and maritime Antarctica, exposed in vitro to fluctuating temperatures of 2-15 degrees Celsius, 2-18 degrees Celsius, 2-21 degrees Celsius and 2-24 degrees Celsius and their constant mean temperatures of 9.0 degrees Celsius, 10.7, 12.0 or 13.1 degrees Celsius, respectively. The 10 isolates of P. roseus were obtained from soils at Lewis Pass on South Georgia, The Backslope on Signy Island, Walton Terraces on Leonie Island and Mars Oasis on Alexander Island. Funding: UK Natural Environment Research Council (core funding to the British Antarctic Survey). *** PLEASE BE ADVISED TO USE VERSION 2.0 OF THIS DATASET *** This dataset has been superseded by Version 2.0 (https://data.bas.ac.uk/full-record.php?id=GB/NERC/BAS/PDC/01807 - see ''Related Data Set Metadata'' link below). Version 2.0 has been updated to include additional data from a third experiment and to update the metadata accordingly

Data on CO2 and CH4 exchange rates between soil and atmosphere, soil temperatures, bacterial 16S ribosomal RNA genes, fungal internal transcribed spacer 2 (ITS2) copies and the relative abundances of the 40 most abundant bacterial taxa in the 48 plots of a soil warming and irrigation experiment on Svalbard in the High Arctic. On 2014-09-10, a soil warming and irrigation experiment was set up at Kongsfjordneset on the Brogger Peninsula, Svalbard. Warming was applied continuously with open top chambers and the irrigation treatment was applied in mid-late June and late August each year. Greenhouse gas exchange between the soil and atmosphere was measured on 2018-08-23 and 2018-08-26. At this time, soil samples were taken for DNA analyses and the amount of bacterial and fungal DNA present in soil was measured. The 40 most frequent bacterial operational taxonomic units were also determined. This project was funded by UK Natural Environment Research Council (core funding to the British Antarctic Survey), the Danish National Research Foundation (CENPERM DNRF100) and Seoul National University.