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28 -- Microbial life in Terrestrial Arid Environments
TUESDAY, April 15, 2008: MORNING
Elaine Bryant
San Jose State University
San Jose, CA, USA
Monika Kress
San Jose State University
San Jose, CA, USA
Description
Earth's deserts provide extreme conditions under which organisms manage to survive. Such environments, particularly the Atacama and Antarctic Dry Valleys, serve as useful analogs to the environment of Mars and allow the investigation of organism that might have existed or may currently exist on Mars. This session will focus on studies of the different types of microorganisms associated with arid environments and the physics of the environment allowing the existence of these microbes. Topics will include methods for community analysis, identification of organisms, adaptive mechanisms for survival under varying conditions of desiccation, radiation exposure and dramatic temperature fluctuation, and the relationship between microbial communities and soil moisture content.
ORAL SESSION
9:45 28-12-O. Diversity and Desiccation Resistance of Bacteria from Arid Lands
[invited] F.A. Rainey
10:15 28-11-O. Germinable Endospores in the Hyperarid Atacama Desert Soils
A. Ponce, P.T. Yung, S. Connon, E. Lester, W. Yang, M. Cable, D. Levine
10:30 28-01-O. A First Glance at the Microenvironmental Conditions Allowing the
Colonization of Quartzes by Hypolythic Microorganisms on the Atacama Desert,
Chile A. Azua-Bustos, C. Gonzales, B. Gomez-Silva, C.P. McKay
10:45 BREAK
11:00 28-04-O. Molecular Methods for Microbial Community Analysis in Hyper-Arid
Mars-like Soils L. Fletcher, C. Conley, C. McKay
11:15 28-14-O. "Pompeii" in the Mojave Desert: Looking for Microbial Survivors in
Paleosols Below Old Lava Flows H. Sun, J. Kan, K. Nealson, R. Bhartia, S. Wells,
L. Beagle
11:30 28-02-O. The Effect of Moisture on Soil Microbial Communities in the Mojave
Desert E. Bryant, S. Rech
11:45 28-06-O. Production of Dissolved Organic Carbon by Desert Biological Soil Crusts
During Simulated Rainfall Experiments H. Hartnett, K. Alexander, F. Garcia-Pichel,
A. Anbar
POSTERS
28-09-P. Identification of Cultivable and Uncultivable Antarctic Soil Bacteria
Y.K. Lee, S.G. Hong, H.K. Lee
28-10-P. Substantial Bacterial Diversity in Surface Soil from the Atacama Desert
D. Moser, J.C. Plata, S. Qian, J. Bruckner, C.P. McKay, H. Sun
28-05-P. Halite Deliquescence Facilitates Endolithic Microbial Survival in the Hyper-arid
Core of the Atacama Desert B. Gomez-Silva, A.F. Davila, A. de los Rio, C. Ascas,
H. Olivares, C. McKay, J. Wierzchos
28-13-P. A Review of Biological and Chemical Analytical Techniques for Determining Soil
Bioload H. Smith
28-08-P. Oxidation State of Manganese in Rock Varnish K. Kuhlman, M. Abrecht
28-03-P. Spectral Characterization of Atacama Desert Soils for Remote-Sensing
Applications J. Dalton, M.C. Turnbull, C.P. McKay
28-07-P. Radiogenic Isotope Tracking of Cation Sources in the Arid Soils of the Atacama
Desert, Chile J. Hynicka, B. Stewart, S. Ewing, R. Amundson