COS 20
Biogeochemistry: Biogeo Patterns Along Environmental Gradients

Tuesday, August 12, 2014: 8:00 AM-11:30 AM
302/303, Sacramento Convention Center
8:00 AM
 Role of fire, herbivory and forest clearing in 15N/14N balances across diverse terrestrial ecosystems
Meagan E. Mnich, University of California, Davis; Benjamin Z. Houlton, University of California, Davis
8:20 AM Cancelled
 Examining relationships between canopy characteristics and terrace geomorphology in the Peruvian Amazon
K. Dana Chadwick, Stanford University; Gregory P. Asner, Carnegie Institution for Science
8:40 AM Cancelled
 Aridity and plant functional type control soil carbon pools across an Australian aridity gradient
Heather L. Throop, New Mexico State University; David J. Eldridge, University of New South Wales; Michaela Buenemann, New Mexico State University; Keska Kemper, Cleveland High School
9:00 AM
 Assessing the relative importance of microbial versus abiotic factors for an ecosystem function: An evaluation of soil respiration rates from three grassland soils reciprocally transplanted with microbial communities
Charlotte J. Alster, Colorado State University; Akihiro Koyama, Algoma University; Nels G. Johnson, Colorado State University; Joe C. von Fischer, Colorado State University
9:20 AM
 Heat stress disruption and contrasting avoidance-tolerance strategies from thermally contrasting climates in Arabidopsis thaliana
Nana Zhang, University of Pittsburgh; Stephen J. Tonsor, Carnegie Museum of Natural History
9:40 AM
9:50 AM
 Biogeochemical signals in the outflow of glaciers and rock glaciers in the American West
Timothy Fegel, Colorado State University; Jill Baron, Natural Resource Ecology Laboratory, United States Geological Survey; Ed K. Hall, Colorado State University; Claudia M. Boot, Colorado State University; Andrew Fountain, Portland State University; Gunnar Johnson, Portland State University
10:10 AM
 Biogeochemical controls on nitrogen fixation vary between rock types in a lowland tropical rainforest
Joy B. Cookingham, University of California, Davis; Steven W. Brewer, Copperhead Environmental Consulting, Inc.; Benjamin Z. Houlton, University of California, Davis
10:30 AM Cancelled
 What drives consumer trophic structure across high Andean soil chronosequences?
Fernando D. Alfaro, Pontificia Universidad Catolica de Chile, Instituto de Ecología y Biodiversidad; Sebastian R. Abades, Pontificia Universidad Catolica de Chile, Instituto de Ecología y Biodiversidad; Angelica Gonzalez, University of British Columbia; Aurora Gaxiola, Universidad Católica de Chile, Instituto de Ecologia y Biodiversidad; Pablo A. Marquet, Santa Fe Institute
10:50 AM
 Alpine moist meadow response to regional gradients of nitrogen deposition in the Rocky Mountains
Amber C. Churchill, University of Colorado Boulder; William D. Bowman, University of Colorado
11:10 AM
 From the coast to the desert in southern California: Atmospheric deposition and ecological effects
Mark Fenn, USDA Forest Service; Sarah Jovan, US Forest Service; Andrzej Bytnerowicz, USDA Forest Service; Edith Allen, University of California, Riverside; Leela E. Rao, University of California, Riverside; Justin Valliere, University of California, Riverside
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