Poster # 177. Halvorson, Jonathan ^*,1, ¹ USDA-ARS Appalachian Farming Systems Research Center, Beaver, WV, USA Silvopastoral thinning effects on rates of surface decomposition of leaf litter.

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Poster # 178. Maldonado, Vanessa¹, Alvarez-Sánchez, Javier^*,1, Moreno-Casasola, Patricia², ¹ Universidad Nacional Autónoma de México, Mexico, D.F., Mexico² Instituto de Ecología, A.C., Xalapa, Veracruz, Mexico Litter decomposition in a wetland of the Gulf Coast of Mexico.

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Poster # 179. Bell, Stephanie¹, Bairdsen, Randi¹, Lincoln, David^*,1, ¹ University of South Carolina, Columbia, SC, USA Collembolan population responses to Liquidambar styraciflua leaf litter produced under ambient and elevated carbon dioxide.

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Poster # 180. Bechtold, Heather^*,1, Inouye, Richard¹, ¹ Idaho State University, Pocatello, Idaho Loss of Artemisia tridentata affects resource island structure and nutrient cycling in Great Basin sagebrush steppe.

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Poster # 181. Jefts, Sultana^*,1, Orwig, David¹, ¹ Harvard Forest, Harvard University, Petersham, MA, USA Assessing N availability through multiple resin extractions following the onset of the hemlock woolly adelgid.

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Poster # 182. Bennett, Jennifer^*,1, Kelting, Daniel^{1, 2}, Allen, Howard¹, ¹ North Carolina State University, Raleigh, NC² Paul Smith's College, Paul Smiths, NY Nitrogen availability in Loblolly pine plantations in the southeast United States.

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Poster # 183. Anderson, Richard^*,1, Fuhlendorf, Sammual², Engle, David³, ¹ Oklahoma State University, Stillwater, OK, USA² Oklahoma State University, Stillwater, OK, USA³ Oklahoma State University, Stillwater, OK, USA N mineralization in tallgrass prairie under fire-grazing interaction.

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Poster # 184. Tedla, Asfaw^*,1, Su, Bo¹, Luo, Yiqi¹, Wallace, Linda¹, ¹ Department of Botany and Microbiology, Norman, OK, USA Carbon and nitrogen dynamics in experimentally warmed and clipped tallgrass prairie soil.

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Poster # 185. Boser, Christina^*,1, Fujinuma, Ryosuke¹, Read, Harry¹, Balser, Teri¹, ¹ University of Wisconsin - Madison, Madison, Wisconsin, USA Influence of extraction protocol and extent land-use on soil lipid profiles.

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Poster # 186. Bader, Nicholas^*,1, ¹ University of California, Santa Cruz, CA Assessing the influence of Populus fremontii roots on soil carbon stocks.

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Poster # 187. Gathany, Mark¹, Brown, Kim¹, ¹ Ohio University, Athens, Ohio Sources of varibility in soil carbon in adjacent young and old oak forests in Ohio.

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Poster # 188. Pagel, Alisha^*,1, Day, Frank¹, Stover, Daniel¹, ¹ Old Dominion University, Norfolk, VA, USA Comparison of root length and biomass as indicators of C accumulation in an elevated CO₂ study of Florida scrub-oak on Merritt Island, FL.

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Poster # 189. O'Brien, Sarah^{*,1, 2}, Jastrow, Julie¹, Matamala, Roser¹, Gonzalez Meler, Miquel², ¹ Argonne National Lab, Argonne, IL² University of Illinois at Chicago, Chicago, IL Soil carbon accrual from C3 and C4 plant sources in a restored tallgrass prairie chronosequence.

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Poster # 190. Mellor, Nathan^*,1, Paul, Eldor², Drijber, Rhae³, Hellerich, Jeff³, Morris, Sherri¹, ¹ Bradley University, Peoria, IL² Colorado St. University, Fort Collins, CO³ University of Nebraska, Lincoln, Nebraska Changes in ecosystem carbon following afforestation of native sand prairie.

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Poster # 191. McKinley, Duncan^*,1, Blair, John¹, Johnson, Loretta¹, ¹ Kansas State University, Manhattan Altered soil nitrogen cycling following Juniperus virginiana encroachment into tallgrass prairie.

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Poster # 192. Klironomos, John¹, Wolfe, Benjamin^*,1, Haydon, Daniel¹, ¹ University of Guelph, Guelph, Ontario, Canada Spatiotemporal patterns of arbuscular mycorrhizal fungal diversity.

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Poster # 193. JI, BAOMING^*,1, TRESEDER, KATHLEEN², ¹ UNIVERSITY OF PENNSYLVANIA, PHILADELPHIA, PA² UNIVERSITY OF CALIFORNIA, IRVINE, IRVINE, CA Arbuscular mycorrhizal fungal community compositions along a fire chronosequence in Alaskan boreal forest.

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Poster # 194. Núñez-Castillo, Oswaldo^*,1, Alvarez-Sánchez, Javier^*,, ¹ Universidad Nacional Autónoma de México, Mexico Edge effect in a tropical rain forest: Implications on arbuscular mycorrhizal fungi communities.

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Poster # 195. Redman, Andrea^*,1, Johnson, Nancy ¹, Rowland, Diane², ¹ Northern Arizona University, Flagstaff, AZ² USDA-ARS, Dawson, GA Host species, temperature, and clipping interact to influence the species composition of arbuscular mycorrhizal fungal communities.

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Poster # 196. Hersh, Michelle^*,1, Vilgalys, Rytas¹, Clark, James¹, ¹ Duke University, Durham, NC, USA Host specificity of arbuscular mycorrhizal fungi inhabiting two forest tree species.

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Poster # 197. Piotrowski, Jeff^*,1, Denich, Tanya ², Klironomos, John², Graham, John¹, Rillig, Matthias¹, ¹ University of Montana, Missoula, MT, USA² University of Guelph, Guelph, ON, Canada The effect of arbuscular mycorrhizae on soil aggregation depends on the interaction between plant and fungal species.

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Poster # 198. Ronsheim, Margaret^*,1, Green, Ellen¹, ¹ Vassar College, Poughkeepsie, NY Mycorrhizae-pathogen interactions influenced by host genotype and type of pathogen.

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Poster # 199. Rosier, Carl^*,1, Driver, James¹, Hamilton , Melinda ², Rillig, Matthias ¹, ¹ University of Montana, Missoula, Montana² Idaho National Environmental Engineering Laboratory, Idaho Falls, Idaho Differential production of glomalin by co-occurring species of arbuscular mycorrhizal fungi.

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Poster # 200. Egerton-Warburton, Louise^{*,1, 3}, Dang, Minh², Miranda, Edmund³, Allen, Edith³, Ghisalberti, Emilio⁴, ¹ Chicago Botanic Garden, Glencoe³ University of California, Riverside² San Francisco State University, San Francisco⁴ University of Western Australia, Perth Monoterpene production in California coastal sage shrubs in response to mycorrhizae and nitrogen availability.

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Poster # 201. Moser, Amanda^*,1, Petersen, Carolyn¹, D'Allura, Jad¹, Berninghausen, Harold¹, Southworth, Darlene¹, ¹ Southern Oregon University, Ashland, OR Ectomycorrhizas of Quercus garryana on serpentine and non-serpentine soils in southwestern Oregon.

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Poster # 202. Stacy, Irvin^*,1, Zimpfer, Jeff¹, Smith, Stanley¹, ¹ University of Nevada-Las Vegas, Las Vegas, NV Effects of global change on Mojave Desert annual plant communities.

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Poster # 203. Stevens, Glen^*,1, Jones, Robert¹, ¹ Virginia Polytechnic Institute and State University, Blacksburg, VA, USA Root herbivores, resource heterogeneity and root foraging behaviors interact to influence plant communities.

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Poster # 204. Stover, Daniel^*,1, Day, Frank¹, Bacalan, Vincent¹, Drake, Bert², Pagel, Alisha¹, ¹ Old Dominion University, Norfolk, VA, USA² Smithsonian Environmental Research Center, Edgewater, MD, USA The influence of elevated CO₂ and soil depth on fine root dynamics in a Florida oak-scrub ecosystem.

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Poster # 205. Park, Byung Bae¹, Yanai, Ruth¹, Fahey, Timothy², ¹ SUNY College of Environmental Science and Forestry, Syracuse, NY, USA² Cornell University, Itacha, NY, USA Biomass and distribution of fine roots in hardwoods and softwoods across a calcium gradient in northeastern America.

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Poster # 206. Gershenson, Alexander^*,1, Cheng, Weixin ¹, ¹ University of California, Santa Cruz, Santa Cruz, CA, US Seasonal dynamics of fine roots in a ponderosa pine (Pinus ponderosa) dominated ecosystem in the Sierra Nevada, California.

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Poster # 207. Coleman, Mark^*,1, ¹ USDA Forest Service, Southern Research Station, New Ellenton, SC, USA Edaphic effects on fine-root turnover differ between pine and poplar.

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Poster # 208. Brant, Justin^*,1, Myrold, David ¹, Sulzman, Elizabeth¹, ¹ Oregon State University, Corvallis Root influences on microbial community composition in forest soils.

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Poster # 209. Whitbeck, Julie^*,1, ¹ University of New Orleans, New Orleans, LA, USA Setting bounds on belowground NPP: Evaluating three approaches in a bottomland hardwood forest.

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Poster # 210. Ascarrunz, Nataly^{*,1, 2}, Seastedt, Timothy^{1, 2}, ¹ University of Colorado, Boulder, CO² Institute of Arctic and Alpine Research, Boulder, CO Impacts of sequential land use changes in the Integrated Management Area, Parque Nacional Amboro, Santa Cruz, Bolivia.

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Poster # 211. Holmes, Chris^*,1, Nowak, Robert¹, Hartle, R. Todd², ¹ University of Nevada, Reno, Reno, NV, USA² Idaho State University, Pocatello, ID, USA Response of soil water balance to predicted global climate change treatments in the Mojave Desert.

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Poster # 212. Simmons, Breana^*,1, Coleman, David¹, ¹ University of Georgia, Athens, GA, USA Combining conservation tillage techniques with compost application to accelerate the accumulation of soil organic matter in dryland cotton production.

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Poster # 213. Huang, Jianjun^*,1, Brinkman, Jennifer ¹, Skinner, Carl², Boerner, Ralph¹, ¹ Department of Evolution, Ecology, & Organismal Biology, Columbus, OH, USA² USDA Forest Service, Redding, CA, USA Effects of ecosystem restoration treatments on soil resources, and their implications for restoration success.

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Poster # 214. Albarracín, María ^*,1, Garland, Jay², Weishampel, John¹, ¹ University of Central Florida., Orlando, Florida, USA² Dynamac Corporation, Titusville, Florida, USA Post-fire structural and functional dynamics of soil microbial communities in Florida scrub.

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Poster # 215. Carney, Karen^*,1, Matson, Pamela², ¹ Smithsonian Environmental Research Center, Edgewater, MD² Stanford University, Stanford, CA The effect of disturbance frequency and season on tropical soil microbial communities.

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Poster # 216. Dane, Laura ^*,1, Lipson, David¹, ¹ San Diego State University, San Diego, CA, USA Heterotrophic activity in cryptobiotic soil crusts of varying successional stages.

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Poster # 217. Fujinuma, Ryosuke^*,1, Balser, Teri¹, ¹ University of Wisconsin - Madison, Madison, Wisconsin, USA Canopy tree species and soil microbial community composition in an upper Michigan old growth forest.

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Poster # 218. Grayston, Sue^*,1, Addison, Jan², Berch, Shannon³, deMontigny, Louise³, Durall, Dan⁴, Egger, Keith⁵, Jones, Melanie⁴, Modesto, Robin⁶, Mohn, William ¹, Panesar, Tochi ², Prescott, Cindy¹, Simard, Suzanne¹, Srivastava, Diane¹, ¹ University of British Columbia, Vancouver, B.C., Canada² Royal Roads University, Victoria, B.C., Canada³ B.C. Ministry of Forests, Victoria, B.C., Canada⁴ Okanagan University College, Kelowna, B.C., Canada⁵ University of Northern British Columbia, Prince George, B.C., Canada⁶ International Forest Products Ltd, Campbell River, B.C., Canada Does green tree retention maintain soil function after harvest?

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Poster # 219. Momen, Bahram^*,1, Weil, Ray¹, ¹ Department of Natural Resource Sciences and LA, College Park, MD, USA Microcalorimetric quantification of microbial activity in soils with contrasting management histories.

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Poster # 220. Zorba, Gypsi ^*,1, Vourlitis, George¹, ¹ California State University, San Marcos, San Marcos, CA, USA Soil nutrient storageand cycling in semi-arid ecosystem shrublands of southern California exposed to high atmospheric N pollution.

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Poster # 221. Smith, Heather^*,1, Frey, Serita¹, Knorr, Melissa¹, Lux, Heidi², Melillo, Jerry², ¹ University of New Hampshire, Durham, NH, USA² The Ecosystem Center of Marine Bilological Laboratory, Woods Hole, MA, USA Microbial responses to soil warming.

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Poster # 222. McPeek, Tamara^*,1, Wang, Xianzhong¹, Filippelli, Gabriel¹, ¹ Indiana University Purdue University Indianapolis, Indianapolis, Indiana, United States The weathering of Icelandic basalts by plants and soil microbes.

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Poster # 223. Maul, Jude^*,1, Drinkwater, Laurie¹, ¹ Cornell University, Ithaca, NY Plant legacy effects on rhizosphere microbial community structure.

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