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1Biogeochemical Sciences Branch, Cold Regions Research and Engineering Laboratory,US Army Engineer Research & Development Center, Hanover, NH, 2Environmental Processes Branch, Environmental Laboratory,US Army Engineer Research & Development Center, Vicksburg, MS, 3Terrestrial and Cryospheric Scienes Branch, Cold Regions Research and Engineering Laboratory,US Army Engineer Research & Development Center, Hanover, NH, 4Biogeochemical Sciences Branch, Cold Regions Research and Engineering Laboratory,US Army Engineer Research & Development Center, Fairbanks, AK
Chapters
- 00:05Title
- 01:06Material Preparation
- 03:24Permafrost and Ice Core Processing in a Cold Room Facility
- 05:33Check for Growth of S. marcescens Colonies
- 07:25Results: Permafrost Tunnel Samples, Fox, AK
- 08:15Conclusion
Kryosfæren giver adgang til bevarede organismer, der varede under tidligere miljøforhold. En protokol præsenteres til at indsamle og rense permafrost kerner af jord og is. Fravær af exogene kolonier og DNA tyder på, at mikroorganismer detekteret repræsenterer materialet, snarere end forurening fra boring eller forarbejdning.
