B34C:
Life on the Fringe: The Starving Majority II Posters

Submit an Abstract to this Session

Session ID#: 6244

Session Description:
Microbial communities survive in extreme environments despite low energy and nutrient fluxes, thereby placing severe physiological and thermodynamic limits on life. Survival comes at the expense of growth and consequently generation times are long and growth rates exceedingly slow.  However, the majority of our information about physiology and metabolism used to model microbial activity in energy-starved environments is derived from studies of laboratory cultures characterized by rapid growth and high metabolic rates.

This session will focus on the responses of modern and ancient microorganisms to low fluxes of energy and nutrients and the implications for bioenergetic theory, reactive transport modeling, and field studies.  An important goal of this session is to advance the understanding of microbial survival in extreme environments, such as the deep biosphere and the cryosphere.

OSPA Liaison:  Christina Marie Smeaton, University of Waterloo, Ecohydrology Research Group, Waterloo, ON, Canada
Chairs:  Philippe Van Cappellen, Ecohydrology Research Group, University of Waterloo, Earth and Environmental Sciences, Waterloo, ON, Canada, Christina Marie Smeaton, University of Waterloo, Ecohydrology Research Group, Waterloo, ON, Canada and Sean Crowe, University of British Columbia, Department of Microbiology and Immunology, Vancouver, BC, Canada
Primary Convener:  Philippe Van Cappellen, Ecohydrology Research Group, University of Waterloo, Earth and Environmental Sciences, Waterloo, ON, Canada
Conveners:  Christina Marie Smeaton, University of Waterloo, Department of Earth and Environmental Sciences, Waterloo, ON, Canada, Sean Crowe, University of British Columbia, Department of Microbiology and Immunology, Vancouver, BC, Canada and Doug LaRowe, University of Southern California, Los Angeles, CA, United States
Index Terms:

0412 Biogeochemical kinetics and reaction modeling [BIOGEOSCIENCES]
0448 Geomicrobiology [BIOGEOSCIENCES]
0456 Life in extreme environments [BIOGEOSCIENCES]
0465 Microbiology: ecology, physiology and genomics [BIOGEOSCIENCES]

Abstracts Submitted to this Session:

 
B34C-0062
Modelling optimized allocation of energy by microbes and their physiological state (34832)
Bijendra Man Bajracharya1,2, Christina Marie Smeaton1, Olaf A. Cirpka3, Chuanhe Lu2, Igor Markelov1, Ekaterina Markelova4 and Philippe Van Cappellen5, (1)University of Waterloo, Ecohydrology Research Group, Waterloo, ON, Canada, (2)University of Tübingen, Center for Applied Geosciences, Tübingen, Germany, (3)University of Tübingen, Center for Applied Geoscience, Tübingen, Germany, (4)University of Waterloo, Earth and Environmental Sciences, Waterloo, ON, Canada, (5)Ecohydrology Research Group, Water Institute and Global Water Futures Program, University of Waterloo, Waterloo, ON, Canada
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