113 Ecosystem N and P Dynamics

Oral Session
S07 Forest, Range & Wildland Soils
This session will explore the complex relationships between ecosystem N and P dynamics, including stochiometry, limitation, co-limitation , and saturation.
Monday, November 2, 2009: 9:55 AM-12:30 PM
Convention Center, Room 308, Third Floor

Presiding:
Ruth Yanai
9:55 AM
Introductory Remarks
10:00 AM
Fate of Nitrogen Inputs to Terrestrial Ecosystems.
Pamela Templer, Boston Univ.; Michelle C. Mack, Univ. of Florida
10:15 AM
The Effect of Nutrient Availability On Soil Extracellular Enzyme Activity and CNP Dynamics.
Farrah Fatemi, Univ. of Maine; Ivan Fernandez, Univ. of Maine; Kevin Simon, Univ. of Maine; David Dail, Univ. of Maine
10:30 AM
Leaf Litter Leachate Reduces Soil Phosphate Sorption in Lowland Tropical Forest Soils.
Laura Schreeg, Univ. of Florida; Benjamin Turner, Smithsonian Tropical Res. Inst.; Michelle C. Mack, Univ. of Florida; Jan Jansa, ETH Z├╝rich; Edmund V.J. Tanner, Univ. of Cambridge; Emma Sayer, Univ. of Cambridge
10:45 AM
Trichloroacetic Acid Extractable N and P as Indicators of Site Quality Changes in Pine Plantations in the South.
Larry Kiser, Virginia Polytechnic Inst. & State Univ. (Virginia Tech); Thomas Fox, Virginia Polytechnic Inst. & State Univ. (Virginia Tech)
11:00 AM
Biophysical Controls On Ecosystem Nitrogen Cycling along a Soil Texture Gradient.
Michael Castellano, Pennsylvania State Univ.; Jason Kaye, Pennsylvania State Univ.; Henry Lin, Pennsylvania State Univ.; John Schmidt, USDA-ARS
11:15 AM
Break
11:30 AM
Evidence for Bedrock Nitrogen Fertility in Temperate Conifer Forests of Northern California.
Scott Morford, Univ. of California, Davis; Benjamin Z. Houlton, Univ. of California, Davis; Randy Dahlgren, Univ. of California, Davis
11:45 AM
The Effect of Soil Freezing On Nitrogen Dynamics: A Snow Manipulation Study in a Forested Watershed in the Snow Belt of Western New York, USA.
Sheila Christopher, Virginia Polytechnic Inst. & State Univ. (Virginia Tech); Myron Mitchell, SUNY, Environ. Sci. & Forestry; Shreeram Inamdar, Univ. of Delaware
12:00 PM
Linking Nitrate Production to Chemical and Biotic Controls in Soils Developed Beneath Hardwood and Conifers.
Charlene Kelly, Virginia Polytechnic Inst. & State Univ. (Virginia Tech); Stephen Schoenholtz, Virginia Polytechnic Inst. & State Univ. (Virginia Tech); Mary Beth Adams, USDA-Forest Service
12:15 PM
Discussion
12:30 PM
Adjourn