Presentations

CONFERENCE PRESENTATIONS/ABSTRACTS

  1. Ravi, S., D. J. Law,  G. A. Barron-Gafford, D. D. Breshears, T. E. Huxman and J. Caplan, Desertification pathways induced by grass invasion into shrublands: The ecophysiological context,  American Geophysical Union Fall meeting, New Orleans, LA, Washington DC, December 2018.
  2. Burger*, W., G. Wang*, D. Grandstaff,  S. Ravi, J. Li, J. B. Sankey, and S. van Pelt, Spatial analysis of post-fire sediment redistribution using rare earth element tracers, American Geophysical Union Fall Meeting, Washington DC, December 2018. (accepted)
  3. Choi*, C.,  S. Ravi,  I. Serigar, F. Dwiyanti and J. Macknick, Combined land use of solar infrastructure and agriculture for socioeconomic and environmental co-benefits in Indonesia, American Geophysical Union Fall meeting, Washington DC, December 2018.
  4. Wang*, G., J. Li and  S. Ravi, The Reversibility of shrub encroached grasslands under projected long-term droughts, American Geophysical Union Fall meeting, New Orleans, LA, Washington DC, December 2018.
  5. Wang*, G., J. Li, S. Ravi, and  J. Sankey, Fire changes micro-scale stable isotopes of soil nitrogen (N) spatial heterogeneity in a grassand-shrubland transition system, American Geophysical Union Fall meeting, Washington DC, December 2018.
  6. Buynevich, I., A. M. Jaskot, S. I. Bolysov, S. T. Hasiotis, C. S. Sparacio, A.  A. Derkach , K. A. Kopcznski, and S. Ravi, Zoogeomorphic structures as water-level indicators in coastal settings, American Geophysical Union Fall meeting, Washington DC, December 2018.
  7. Cagle*, A., C. S. Choi*, S. Ravi , J. Macknick, and R. Bickhart, Impacts of Solar PV Arrays on Physicochemical Properties of Soil, American Geophysical Union Fall meeting, New Orleans, LA, December 2017.
  8. Choi*, C., J. Macknick and S. Ravi, Opportunities for co-location of solar PV with agriculture for cost reductions and carbon, water, and energy footprint mitigation in the tropics, American Geophysical Union Fall meeting, New Orleans, LA, December 2017.
  9. Wang*, G., J. Li, S. Ravi, D. Dukes*, H. Gonzales*, J. Sankey and S. van Pelt, Effects of Fire on the Plant-Soil Interactions in Northern Chihuahuan Desert, American Geophysical Union Fall meeting, New Orleans, LA, December 2017.
  10. Ivgi*, S. I. and S. Ravi , Quantifying changes in connecting along a shrub-grass ecotone using LiDAR: Implications for desertification control, Drylands, Deserts and Desertification 2017, Combating Desertification and Dryland Management-Theory and Practice. Sde Boker, Israel, November, 2017.
  11. S. Ravi , On the ecohydrologic interactions within “fairy circles” in the Namib Desert, Drylands, Deserts and Desertification 2017, Combating Desertification and Dryland Management-Theory and Practice, Sde Boker, Israel, November, 2017 (INVITED Speaker).
  12. Ravi, S. Solar-Agriculture colocation: Synergies and Tradeoffs, The 6th IPB talks on Complexity and Sustainability Sciences: Renewable Energy and Agriculture , Bogor, Indonesia, August 2017. (INVITED Speaker and panelist).
  13. Ravi, S., Quantifying post-disturbance dust emissions in changing landscapes, Association of American Geographers 17th Annual Meeting, Boston, MA, April 2017.
  14. Ravi, S. Quantifying post-disturbance dust emissions in changing landscapes, Propagation of climate and tectonic signals through landscapes (6th Annual Amtrak Club Meeting), State College, PA, May 2017. (INVITED Keynote speaker).
  15. Ravi, S., L. Wang, Kaseke, K., and I. Buynevich, Ecohydrologic interactions within “fairy circles” in the Namib Desert, American Geophysical Union Fall meeting, San Francisco, CA, December 2016.
  16. Trifunovic*, B., Gonzales*, H., and S. Ravi, Impact of biochar amendment on soil hydrological properties, American Geophysical Union Fall meeting, San Francisco, CA, December 2016.
  17. Wang, L., S. Daryanto, Kaseke, K., and S. Ravi, Integrating teaching and authentic research in the field and laboratory settings, American Geophysical Union Fall meeting, San Francisco, CA, December 2016.
  18. Wang*, G., J. Li, S. Ravi, J. Sankey, D. Dukes, H. Gonzales, and S. van Pelt, Post-fire soil nutrient redistribution in northern Chihuahuan Desert, American Geophysical Union Fall meeting, San Francisco, CA, December 2016.
  19. Dukes*, D., S. Ravi, D. Grandstaff, H. Gonzales*, J. Li, J. Sankey, G. Wang, and S. Van Pelt, Quantifying post-fire aeolian sediment transport using rare earth element tracers, American Geophysical Union Fall meeting, San Francisco, CA, December 2016.
  20. Li, J., and S. Ravi, Soil texture in a coppice dune system: The relative role of aeolian and hydrologic processes, American Geophysical Union Fall meeting, San Francisco, CA, December 2016.
  21. Gonzales*, H., S. Ravi. J, Li and J. Sankey, Aeolian sediment trapping efficiencies of sparse vegetation and its ecohydrological consequences in drylands, American Geophysical Union Fall meeting, San Francisco, CA, December 2016.
  22. Ravi, S., B. Sharratt, J. Li, S. Olshevski*, Z. Meng, and J. Zhang, Aerosol emissions from biochar-amended agricultural soils, American Geophysical Union Fall meeting, San Francisco, CA, December 2015.
  23. Wang, L., S. Manzoni, S. Ravi, D. Riveros-Iregui, and K. Caylor, Dynamic interactions of ecohydrology and biogeochemical processes in water-stressed environments, American Geophysical Union Fall meeting, San Francisco, CA, December 2015.
  24. Wang, L., Kaseke, K., S. Daryanto, and S. Ravi,  Integrating teaching and research in field and laboratory settings, American Geophysical Union Fall meeting, San Francisco, CA, December 2015.
  25. Li, J., and S. Ravi, Shifting from grassland to shrubland: New insights from recent experimental studies in the Chihuahuan Desert, American Geophysical Union Fall meeting, San Francisco, December 2015.
  26. Olshevski*, S., S.  Ravi, J. Li and B. Sharratt, Particulate matter emissions from biochar-amended soils: A potential health hazard? Geological Socisty of America Annual Meeting, Baltimore, MA, November 2015.
  27. Ravi, S., J. Macknick, D. Lobell, C. Field, K. Ganesan and R. Jain, Colocation opportunities for renewable energy and agriculture in northwestern India, American Geophysical Union Fall Meeting, San Francisco, CA, December 2014.
  28. Ravi, S., J. Macknick, D. Lobell, C. Field, M. Elchinger, and B. Stoltenberg, European Geoscience Union General Assembly 2015, Vienna, Austria, April 2015.
  29. Ravi, S. G. Okin and T. Huxman, Land degradation patterns induced by biological invasions: Untangling the climate-soil-vegetation feedback, European Geoscience Union General Assembly 2015, Vienna, Austria, April 2015.
  30. Ratajczak, Z., P. D’Odorico, J. B. Nippert, N. Brunsell, S.  Ravi, Collins, Leading- and misleading-indicators of grassland to shrubland regime shifts, Ecological Society of America Annual Convention, Minneapolis, MN, August 2013.
  31. Ravi, S., M. Dale, D. Lobell and C. Field, Impacts of large solar installations on water resources and food security, American Geophysical Union Fall Meeting December 2013.
  32. Ravi, S., M. Dale, D. Lobell and C. Field, Impacts of large soalr installations on water resources and food security, American Geophysical Union Fall Meeting December 2013.
  33. Ravi, S., D. Lobell and C. Field, Tradeoffs and synergies between biofuel production and large-scale solar infrastructure in deserts, American Geophysical Union Fall Meeting December 2012.
  34. Ravi, S., Dust and ecosystem processes: Integrating dust, ecology and human dimensions, Ecological Society of America Annual Meeting, Portland, August 2012. [INVITED]
  35. Law, D., S. Ravi, D. D. Breshears, G. A. Barron-Gafford, and T. E. Huxman. Evapotranspiration partitioning: Competition between abiotic & biotic components of the water budget, AGU Chapman Conference, Tucson, AZ, 2011.
  36. Ravi, S., D. J. Law, A. Wiede, G. A. Barron-Gafford, D. D. Breshears, K. Dontsova and T. E. Huxman, Ecophysiological responses of native and invasive grasses to simulated warming and drought, American Geophysical Union Fall Meeting, San Francisco, CA, December 2011.
  37. Sankey, J., S.  Ravi and S. L. Collins, Resilience of the spatial patterning of soil resources in creosote-encroached grassland, American Geophysical Union Fall Meeting, San Francisco, CA, December 2011.
  38. Sankey, J. B., Germino, M.J., Glenn, N.F., S.  Ravi,, Wallace, C.S.A., 2011, Quantifying biogeomorphic response to fire at micro-biome scales. Fire Ecology Conference, Snowbird, UT, November 2011.
  39. Law, D., S. Ravi, D. D. Breshears, G. A. Barron-Gafford, and T. E. Huxman. Evapotranspiration partitioning in a warmer world: Natives lose out to invasives in a shift to evaporation dominance? Ecological Society of America Annual Meeting, Austin, TX, August 2011.
  40. Gallas, G., K. Dontsova, J. Chorover, E. Hunt and S.  Ravi, University of Arizona. Nutrient uptake and carbon release by exotic and native Arizona grass species under different temperature conditions, Ecological society of America Annual Meeting, Austin, TX, August 2011.
  41. Dontsova, K., G. Gallas, E. Hunt, J. Chorover, and S. Ravi, Plant-mediated weathering of granular basalt, European Geosciences Union, Vienna, July 2011.
  42. Ravi, S., Interactions between hydrologic and aeolian processes, Duke University, Department of Civil and Environmental Engineering, Durham, NC, April, 2011. [INVITED]
  43. Ravi, S., Soil erosion-vegetation interactions in deserts, Stanford University, CA, October 2011. [INVITED]
  44. Ravi, S., Interactions among fires, vegetation and soil erosion processes at the desert margins, University of Kentucky, Department of Geography, Lexington, 2011. [INVITED]
  45. Ravi, S., Addressing Global warming challenges in drylands: Integrating ecophysiological mechanisms with ecohydrological feedbacks, Ecological Society of America Annual Meeting, Pittsburgh, August 2010. [INVITED]
  46. Ravi, S., Interactions among fires, water, vegetation and soil erosion: Implications for land degradation, Duke University, Nicholas School of the Environment and Earth sciences, Durham, NC, March 2010 [INVITED]
  47. Ravi, S., Interactions between geomorphic processes and vegetation at desert margins, 40thBinghamton Geomorphology Symposium 2009 – Geomorphology and Vegetation: Interactions, Dependencies, and Feedback Loops, Blacksburg, VA, October 2009. [INVITED]
  48. Ravi, S., Indiana University – Purdue University, Department of Earth sciences. [INVITED]
  49. Ravi, S., and P. D’Odorico, Aeolian processes at the plant-interspace scale: Implications on patch dynamics, Ecological Society of America Annual Meeting, Milwaukee, August 2008. [INVITED]
  50. Ravi, S., Aeolian processes and ecosystem structure/function in warm deserts, 18th Annual Wildland Shrub Symposium, Logan, May 2010. [INVITED]
  51. Ravi, S., T. M. Zobeck, P. D’Odorico and M. Baddock, Effect of vegetation type on post-fire enhancement of wind erosion in semi arid landscapes, American Geophysical Union Fall Meeting, San Francisco, CA, December 2010.
  52. Baddock, B., T. M. Zobeck, P. D’Odorico, S. van Pelt, S. Ravi, T. M. Over and A. Bhattachan, Responses of wind erosion to disturbances in a desert scrub grassland: grass vs bush cover and a snap shot in to recovery, American Geophysical Union Fall Meeting, San Francisco, CA, December 2010.
  53. Quade, W., S.  Ravi, A. Weide, G. Barron-Gafford, K. Dontsova and T. E. Huxman, Ecophysiological responses of invasive and native grasses with simulated warming, American Geophysical Union Fall Meeting, San Francisco, CA, December 2010.
  54. Wilcox, B. P., L. Turnbull, M. H. Young, J. Williams, S.  Ravi, M. S. Seyfried, D. R. Bowling, R. S. Scott, T. Caldwell, J. Wainwright and M. Germino, Ecohydrological consequences of grasses invading shrublands: Comparing cold and warm deserts, American Geophysical Union Fall Meeting, San Francisco, CA, December 2010.
  55. Gallas, G., K. Dontsova, J. Chorover, E. Hunt and S.  Ravi, Soil weathering, nutrient uptake and carbon release by exotic and native grass species under different temperature conditions, American Geophysical Union Fall Meeting, San Francisco, CA, December 2010.
  56. Ravi, S., P. D’Odorico, S. C. Collins and T. M. Zobeck, Fire- aeolian erosion feedbacks, International Conference on Aeolian Research (ICAR VII), Santa Rosa, Argentina, July 2010.
  57. Baddock, B., T. M. Zobeck, P. D’Odorico, S. van Pelt, S.  Ravi, T. M. Over and A. Bhattachan, Hoof, teeth and fire: The effects of disturbances on wind erosion in a desert scrub grassland, International Conference on Aeolian Research (ICAR VII), Santa Rosa, Argentina, July 2010.
  58. Ravi, S., and T. E. Huxman, Desertification patterns induced by coupled geomorphic and vegetation interactions: the case of biological invasions, American Geophysical Union Fall Meeting, San Francisco, CA, December 2009.
  59. Ravi, S., T. E. Huxman, J. Espeleta, P. D’Odorico and S. L. Collins, Resource redistribution patterns induced by rapid vegetation shifts and their impact on desertification, AGU Chapman Conference on Examining Ecohydrological Feedbacks of Landscape Change Along Elevation Gradients in Semiarid Regions, Sun Valley, ID, October 2009.
  60. Breshears, D. D., J. P. Field, J. J. Whicker, S.  Ravi, T. E. Huxman and P. D’Odorico, AGU Chapman Conference on Examining Ecohydrological Feedbacks of Landscape Change Along Elevation Gradients in Semiarid Regions, Sun Valley, ID, October 2009.
  61. Huxman, T. E. and S. Ravi, Ecohydrology of vegetation conversion and ecosystem consequence, Society of Range Management Annual meeting, Albuquerque, NM, February 2009.
  62. Ravi, S., Feedbacks between fires and soil erosion processes in desert grasslands, University of Arizona, School of Natural Resources, University of Arizona Tucson, March 2009. [INVITED]
  63. Ravi, S., Interactions among fires, vegetation and soil erosion processes at the desert margins: Implications for land degradation, Department of Geography, University of Kentucky, Lexington, February 2009. [INVITED]
  64. Ravi, S., Fire-erosion feedbacks, AIMES-YSN Workshop: Cultural Uses and Impacts of Landscape Fires: Past, Present and Future (Analysis, Integration and Modeling of Earth systems-Young Scientists Network), Boulder, Colorado, July 2008. (limited to 25 selected participants worldwide). [INVITED]
  65. Ravi, S., and P. D’Odorico, Fire-Vegetation-Soil erosion Interactions: Implications on Land Degradation at Desert Margins, MYRES 2008: “Dynamic Interactions of Life and its Landscape”, Meeting of young researchers in earth sciences, New Orleans, May, 2008 (limited to 40 delegates worldwide). [INVITED]
  66. Ravi, S., T. E. Huxman, P. D’Odorico and S. L. Collins, Resource redistribution patterns induced by rapid vegetation shifts and their impacts on land degradation, American Geophysical Union Fall meeting, San Francisco, December 2008.
  67. Ravi, S., P. D’Odorico L. Wang, S. L. Collins, C. S. White and G. S. Okin, Resource homogenization in degraded arid landscapes induced by fire-erosion interactions, American Geophysical Union Fall meeting, San Francisco, December 2007.
  68. Ravi, S., P. D’Odorico, L. Wang, S. L. Collins, C. White and G.S. Okin, Hydrological and aeolian controls on the dynamics of “resource islands” in fire-prone arid landscapes, International Workshop on Environmental Changes and Sustainable Development in Arid and Semi-arid Regions, Alashan Left Banner, China, September 2007.
  69. Ravi, S., P. D’Odorico and G. S. Okin, Hydrologic and aeolian controls on vegetation patterns in arid landscapes, ESA/SER Joint Meeting in San Jose, California. August 2007.
  70. Ravi, S., L. Wang and P. D’Odorico, Form and function of grass ring patterns in arid grasslands: the effect of abiotic controls, COMLAND- International Workshop on Environmental Changes and Sustainable Development in Arid and Semi-arid Regions, Inner Mongolia, China, September 2007.
  71. Ravi, S., P. D’Odorico, S. L. Collins, C. White, L.Wang and G. S. Okin, Effect of fire-erosion interactions on resource island dynamics in arid landscapes, Joint Symposium on Long-term Ecological Research Programs (17thAnnual Jornada Symposium), Las Cruces, New Mexico July, 2007.
  72. D’Odorico, P., and S. Ravi, Fire induced spatial redistribution of soil resources in desert grasslands, Joint Symposium on Long-term Ecological Research Programs (17thAnnual Jornada Symposium), Las Cruces, New Mexico July 28, 2007.
  73. Over, T. M., S. Ravi, P. D’Odorico, T.M. Zobeck and B.E. Herbert, On the water repellency, humidity, fire and wind erosion in arid landscapes, Bouyoucos Conference on Water Repellency, Florida, USA, May 2007.
  74. Ravi, S., P. D’Odorico, T. M. Zobeck and T.M. Over, Feedbacks between fires and wind erosion in heterogeneous arid landscapes, American Geophysical Union Fall meeting, San Francisco, December 2006.
  75. Ravi, S.,D’Odorico, B. Herbert, T. M. Zobeck, T.M. Over, Effect of fire induced soil hydrophobicity of the entrainment of soil particles by wind, International Conference on Aeolian Research (ICAR6), Guelph, Canada, August 2006.
  76. Ravi, S., P. D’Odorico, B. Herbert, T. M. Zobeck and T. M. Over, Enhancement of wind erosion by fire-induced water repellency: a wind tunnel study, American Geophysical Union Fall meeting, San Francisco, December 2005.
  77. Ravi, S., T. M. Zobeck, T.M. Over, P. D’Odorico, The wet bonding forces in soils and their effect on threshold friction velocity of wind erosion, General Assembly of the European Geosciences Union, Vienna, Austria, May 2005.
  78. Ravi, S., P. D’Odorico, T. M. Zobeck and T.M. Over, Effect of Air Humidity on Soil Susceptibility to Wind Erosion, Joint Assembly of the American Geophysical Union, Montreal, Canada, May 2004.

INVITED SEMINARS/LECTURES

Lehigh University (PA), Villanova University (PA), Rutgers University (NJ),  University of Kansas (KS), Georgia Tech (GA), University of Arizona (AZ), University of Kentucky (KY), Duke University (NC), Stanford University (CA), Indiana University- Purdue University (IN),Kutztown University (PA), Temple University (PA), CEEW (New Delhi, India), Inner Mongolia University (Huhhot, China), Institut Pertanian Bogor IPB (Bogor, Indonesia).

OUTREACH/MENTORING

  1. Ravi, S., Linking climate change, biological invasions and desertification, Lets talk science! Science for public – Biosphere 2 Spring lecture series, Oracle, AZ, March 2011.
  2. Ravi, S., Climate change and grass invasions, Buffel grass working group, Tucson, AZ, August 2011.
  3. Ravi, S., Climate change and land degradation, STEM Teacher training Workshop, Biosphere 2, Oracle, AZ, March 2009.
  4. Ravi, S., Climate change, biological invasions and desertification, Lets talk science! Science for public – Biosphere 2 Fall lecture series, Oracle, AZ, March 2011.
  5. Ravi, S., Global desertification, Rillito River Project’s Border Biosphere Art Lab at Biosphere 2, Oracle, AZ, October 2011.
  6. Quade, W., and S.  Ravi, Ecophysiological Responses of Invasive and Native Grass with Simulated Warming, Annual graduate college summer research conference, University of Arizona, Tucson, AZ, August 2011.
  7. Hui, J., S. Ravi and P. D’Odorico, Dust sources across the Sahel Region: Regional and Global implications, Environday, Undergraduate research symposium (best poster award), University of Virginia, Charlottesville, VA, 2007.
  8. Quade, W., and S. Ravi, Ecophysiological responses of native and invasive grasses with simulated warming, National Conference on undergraduate research, Ithaca, NY, 2010.
  9. Ravi, Connecting the dots –“The Water –Energy Nexus” Stanford University lectures for public, Stanford, CA, April, 2013.