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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
La criosfera offre l'accesso a organismi conservati che persiste in condizioni ambientali del passato. Un protocollo è presentato per raccogliere e decontaminare nuclei permafrost di suoli e ghiaccio. L'assenza di colonie esogeni e del DNA suggeriscono che i microrganismi rilevate rappresentano il materiale, piuttosto che la contaminazione da perforazione o di trasformazione.
