[UNKNOWN: PRESTIME] DEFOREST, JARED^*,1, ZAK, DONALD¹, PREGITZER, KURT², ¹ University of Michigan, Ann Arbor, MI² Michigan Technological University, Houghton, MI. Chronic N additions alters microbial community function in forest soils.

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[UNKNOWN: PRESTIME] Crawford, Jeffrey^*,1, Pregitzer, Kurt¹, Burton, Andrew¹, Zak, Donald², ¹ Michigan Technological University, Houghton, MI² University of Michigan, Ann Arbor, MI. Effect of experimental N-additions on soil and root respiration in northern hardwood stands.

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[UNKNOWN: PRESTIME] Eikenberry, Jennifer^*,1, Pregitzer, Kurt¹, Burton, Andrew¹, Zak, Donald², ¹ Michigan Technological University, Houghton, MI² University of Michigan, Ann Arbor, MI. Chronic N effects on root and leaf litter chemistry on northern hardwood forests.

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[UNKNOWN: PRESTIME] Winsome, Thais^*,1, Horwath, William, Scow, Kate¹, Powers, Robert², ¹ University of California, Davis, CA² USDA Forest Service Pacific Southwest Research Station, Redding, CA. The influence of a N-fixing shrub on soil C dynamics in a California forest soil.

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[UNKNOWN: PRESTIME] Magrini, Kimberly^*,1, Evans, Robert¹, Hoover, Coeli², Looker, Michael¹, ¹ National Renewable Energy Laboratory, Golden, CO² USDA Forest Service Northeastern Research Station, Irvine, PA. Soil carbon character and content in three old growth forests.

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[UNKNOWN: PRESTIME] Klopatek, Jeffrey^*,1, ¹ Arizona State University, Tempe. Controls on belowground carbon storage and flux in Douglas-fir forests.

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[UNKNOWN: PRESTIME] Randolph, J. C.^*,1, Wayson, C. A.¹, Schmid, H. P.², ¹ School of Public and Environmental Affairs, Bloomington, IN² Atmospheric Sciences Program, Bloomington, IN. Significance of soil respiration in determining seasonal and annual net carbon dioxide fluxes from a mid-latitude deciduous forest .

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[UNKNOWN: PRESTIME] Brown, Kim^*,1, Schuster, William², Tissue, David³, Turnbull, Matthew⁴, Whitehead, David⁵, Griffin, Kevin⁶, ¹ Ohio University, Athens, OH² Black Rock Forest, Cornwall, NY³ Texas Tech University, Lubbock, TX⁴ University of Canterbury, Christchurch, New Zealand⁵ Landcare Research, Lincoln, New Zealand⁶ Columbia University - LDEO, Palisades, NY. Spatial and temporal variability of soil CO₂efflux from xeric and mesic sites within Black Rock Forest, New York.

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[UNKNOWN: PRESTIME] Hui, Dafeng^*,1, Luo, Yiqi¹, ¹ Department of Botany and Microbiology, Norman, OK. Evaluation of CO₂ production and transport in the soil: case study in Duke Forest .

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[UNKNOWN: PRESTIME] PALMROTH, SARI^*,1, BUTNOR, JOHN², MCCARTHY, HEATHER¹, MAIER, CHRISTOPHER², STOY, PAUL¹, KATUL, GABRIEL¹, OREN, RAM¹, ¹ Duke University, Durham, NC² US Forest Service, Research Triangle Park, NC. Forest floor CO₂ efflux - a comparison of instantaneous and seasonal flux between a pine and an oak-hickory forest.

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[UNKNOWN: PRESTIME] Scott-Denton, Laura^*,1, Monson, Russell¹, ¹ University of Colorado, Boulder, Colorado. Spatial and temporal controls over soil respiration rates at a high-elevation Colorado forest.

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