Greetings Colleagues, =20
We are hosting a session entitled "Biogeochemistry in Polar Environments" that will provide a forum for researchers investigating the interactions of microbes with geology and chemistry in polar and general cryosphere environments. We invite you to submit an abstract for presentation at the 2007 Fall AGU meeting in San Francisco. The deadline for submission in September 7. To submit an abstract, visit the AGU Fall Meeting website at http://www.agu.org/meetings/fm07/ . The session title and description are listed below. =20 Biogeochemistry in Polar Environments =20 The polar regions are unique in many ways, containing ecosystems that are subject to extended periods of annual light and dark cycles as well as extreme temperatures. These environments have proven to be much more dynamic than expected, given the cold, dark conditions for significant periods of time. Polar ecosystems, though extreme, can serve as ideal systems to study the relationship between the microbial world, geology, and chemistry because of limited direct human impacts and the lower complexity of trophic structure. In fact, 14% of our planet is polar, yet we know little about it. As the climate continues to change, polar regions are affected quickly and dramatically, with potential feedbacks to the rest of the globe. Understanding polar biogeochemical cycles is essential for better prediction of impacts of increased temperatures and other climate change effects. Polar biogeochemical research reveals the workings of unique ecosystems, documents a baseline of material transformation for more "complex" temperate regions and highlights ecosystem functions sensitive to climate change. =20 We propose a session to bring together an array of researchers investigating biogeochemical processes and cycling in marine, terrestrial, atmospheric, and freshwater polar environments, as well as those that cross over these systems. Studies investigating a range of biogeochemistry, from trace metals to nutrient cycling are encouraged, with special emphasis on studies integrating field, lab, molecular and/or computational techniques. =20 Hope to see you in December. If you have any questions or would like more information, please contact any one of us. =20 Sincerely, =20 Jenny Baeseman Arctic Research Consortium of the US [EMAIL PROTECTED] =20 Lydia Zeglin University of New Mexico [EMAIL PROTECTED] =20 Michael Gooseff Pennsylvania State University [EMAIL PROTECTED] =20 =20 =20