Effects of Unsaturated Microtopography on Nitrate Concentrations in Tundra Ecosystems: Examples from Polygonal Terrain and Degraded Peat Plateaus

Jeffrey M Heikoop1, Carli A Arendt1, Brent D Newman2, Lauren Charsley-Groffman3, George Perkins4, Cathy J Wilson3 and Stan Wullschleger5, (1)Los Alamos National Laboratory, Earth and Environmental Sciences, Los Alamos, NM, United States, (2)LANL, Los Alamos, NM, United States, (3)Los Alamos National Laboratory, Los Alamos, NM, United States, (4)Los Alamos National Laboratory, Earth and Environmental Sciences Division, MS D469, Los Alamos, NM, United States, (5)Oak Ridge National Laboratory, Environmental Sciences Division, Oak Ridge, TN, United States