COS 52 - Biogeochemistry: Biogeo Patterns Along Environmental Gradients I

Wednesday, August 5, 2009: 8:00 AM-11:30 AM
La Cienega, Albuquerque Convention Center
Presider:
Amitava Chatterjee
8:00 AM
 Soil biochar between upper and lower treeline (2200 – 3500 m) in Colorado Front Range forests
Christopher W. Licata, University of Denver; Robert L. Sanford Jr., University of Denver
8:20 AM
 Temperature sensitivity of soil CO2 fluxes across a 3000 m elevation gradient in southern California
Amitava Chatterjee, University of California, Riverside; G. Darrel Jenerette, University of California
8:40 AM
 Elevation driven dynamics of organic nitrogen cycling and uptake in the White Mountains, NH, USA
Colin Averill, University of Texas at Austin; Adrien C. Finzi, Boston University
9:00 AM
 Determining the sensitivity of New Mexico biomes to predicted climate change scenarios of the Southwest
Marcy E. Litvak, University of New Mexico; Krista Anderson Teixera, University of Illinois at Urbana-Champaign; John DeLong, University of New Mexico; Alek Chakroff, University of New Mexico
9:20 AM
 Patterns of DIN export in the Central Valley of California: Increasing the resolution of a global nutrient export model
Kara E. Goodwin, Independent contractor based at US EPA; John A. Harrison, Washington State University Vancouver; Daniel J. Sobota, National Research Council Postdoctoral Fellow
9:40 AM
9:50 AM
 Continental-scale dissolved inorganic phosphorus export by rivers: Results from a regional-global modeling approach
John A. Harrison, Washington State University Vancouver; A.F. Bouwman, Netherlands Environmental Institute; Sybil Seitzinger, The Royal Swedish Academy of Sciences; Emilio Mayorga, Rutgers University
10:10 AM
 From Forests to Fens: Linking the Nitrogen Cycle to Microorganisms in Multiple Boreal Ecosystems
Dorthe Petersen, University of California, Berekely; Mark P. Waldrop, United States Geological Survey; Donald J. Herman, University of California, Berkeley
10:50 AM
 Nitrogen removal and greenhouse gas production during spring stratification in a small eutrophic reservoir
Bridget R. Deemer, Washington State University Vancouver; John A. Harrison, Washington State University Vancouver
11:10 AM
 Homeostasis of tree leaf temperatures:  Evidence isotopic and otherwise
Brent Helliker, University of Pennsylvania; Suzanna Richter, Franklin and Marshall
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