Managing Global Resources for a Secure Future

2017 Annual Meeting | Oct. 22-25 | Tampa, FL

93 Symposium--Marginal Lands: Biotic Forces Impacting Ecosystem Resilience

Oral Session
SSSA Division: Soil Biology and Biochemistry
Extreme weather events pose an increasing threat to land productivity and the long-term resiliency of ecosystems. The threat is far greater for marginal lands characterized by poor soil quality and low ecosystem capacity as a result of aridity, cold, fire or anthropogenic disturbances. Managing Global Land-Resources For a Secure Future requires an interdisciplinary approach for identifying forces that interact to sustain or degrade marginal systems; i.e. biodiversity, microbe-mediated processes, plant-soil-microbe interactions, nutrient cycling, trophic dynamics, and organism interactions. This symposium will integrate plant and microbial ecologists with soil scientists to debate integrated strategies to sustain or reclaim marginal lands.
Monday, October 23, 2017: 1:30 PM-3:30 PM
Tampa Convention Center, Room 37

Aditi Sengupta and Julia Neilson
Aditi Sengupta and Julia Neilson
1:30 PM
Introductory Remarks
1:35 PM
Cross-Scale Interactions and Ecosystem Resilience in Drylands.
Debra Peters, USDA-ARS; Jeffrey E. Herrick, USDA-ARS; Greg Okin, UCLA; Brandon Bestelmeyer, USDA-ARS Jornada Experimental Range
2:25 PM
Characterization of Growing Microbial Populations in Mcmurdo Dry Valley Soils through Stable Isotope Probing with 18O-Water.
Egbert Schwartz, Northern Arizona University; Dave van Horn, University of New Mexico; Cristina Takacs-Vesbach, University of New Mexico
2:50 PM
Increasing Aridity Impacts the Network Cohesion of the Arid Soil Microbiome.
Julia Neilson, University of Arizona Soil Water & Environmental Science; Cesar Cardona, University of Chicago; Jack Gilbert, University of Chicago; J. Gregory Caporaso, Northern Arizona University; Raina M Maier, University of Arizona
3:05 PM
Heterogeneity of Microbial Community Dynamics in Incipient Soils.
Aditi Sengupta, University of Arizona; James Stegen, Pacific Northwest National Laboratory; Julia Neilson, University of Arizona Soil Water & Environmental Science; Raina M Maier, University of Arizona
3:20 PM
3:30 PM