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    25. A Permafrost Regionalization Map for Studying Vulnerability of Permafrost Carbon, Vulnerability of Permaforst Reseach Coordination Network (RCN) Annual Meeting, San Francisco, CA, Dec 2, 2012 

    24. A pan-Arctic regionalization for mapping vulnerability of permafrost carbon to climate change, CCSI 3x5 seminar series, ORNL, Oak Ridge, TN, Dec 17, 2012. 

    23. The Permafrost Regionalization Map (PeRM) for studying the vulnerability of permafrost carbon, 4th North American Carbon Program All Investigators Meeting, Albuquerque, New Mexico, Feb 5, 2013

    22. “Thawtrendr: Characterizing spatial and temporal patterns of thermokarst and carbon dynamics from regional to pan-Arctic scale using remote sensing and ecosystem modeling” abstract, NASA Terrestrial Ecology Science meeting, La Jolla, California, April 30, 2013

    21. scaling approaches to understanding landscape change in Arctic-Boreal Regions, Terrestrial Ecosystem Model Research & Development workshop, Fairbanks, AK, June 18, 2013 

    20. Studying Ecosystem Dynamics in a Large-Scale Hydrological Manipulation Experiment in the Arctic Using Hyperspectral Remote Sensing and a Robotic Tram System, Dept. of Geography, Indiana University, Bloomington, Indiana, USA, October 11, 2011 (Invited).

    19.  Monitoring Ecosystem Dynamics Using Hyperspectral Reflectance and a Robotic Tram System in an Arctic Landscape, Center for Environment, Oak Ridge National Laboratory, Oak Ridge, TN, USA, September 21, 2011 (Invited).

    19. Monitoring Ecosystem Dynamics Using Hyperspectral Reflectance and a Robotic Tram System in an Arctic Landscape, Center for Environment, Indian Institute of Technology, Guwahati, Assam, India, August 23, 2010 (Invited).

    18. Studying the Impact of Climate Change in an Arctic Landscpae, Department of Environmental Science, Tezpur University, Tezpur, Assam, India, August 24, 2010 (Invited).

    17. Five Years of Near-Surface Land Cover Reflectance in a Large Scale Hydrological Manipulation in an Arctic Tundra Landscape. March 17, 2010, State of the Arctic Meeting, Miami, Florida.

    16. Hyperspectral reflectance measurements from a robotic tram system over arctic tundra. Inter-American Institute for Global Change Research International Summer School on Environmental Applications of Wireless Sensing Networks (WSN). Edmonton, Canada. 17 July, 2009

    15. Hyperspectral reflectance as an indicator of marine-terrestrial nutrient exchange in the Antarctic. UTEP SACNAS Research Expo, El Paso. 17th April, 2008.

    14. Robotic Tram System for Monitoring Arctic Tundra Ecosystem Dynamics, Cybershare Center for Excellence, University of Texas at El Paso, November 18, 2008.

    13.  Monitoring Ecosystem Dynamics of in a Large Scale Hydrological Manipulation Experiment in Barrow Alaska, Cybershare Center for Excellence, University of Texas at El Paso, April 17, 2009.  

    12.  Global connections: How UTEP students, teachers and faculty became Antarctic explorers, Centennial Museum, University of Texas at El Paso, Feb 16, 2009, presented as an IPY participant.

    11.  Advancing the Use of a Robotic Tram System for Monitoring Hyperspectral Reflectance and Ecosystem Dynamics of Arctic Tundra, Cybershare Center for Excellence, University of Texas at El Paso, September 18, 2008. 

    10.  Assessment of Surface Water Depth using Hyperspectral Reflectance: Case study from a Large-scale Hydrological Manipulation Experiment in the Arctic. San Francisco, California. 15-19 December, Annual American Geophysical Union meeting.2008

    9.    SpecNet North 2007. Spectral Measurements from the Barrow Biocomplexity Experiment. 2007, Edmonton, Canada. 10-14 September, SpecNet North 2007 Meeting.

    8.  Hyperspectral Studies of Arctic Tundra Ecosystems Using an Automated Robotic Cart System.2007, San Francisco, California. 10-14 December, American Geophysical Union Annual Meeting.

    7. Field sampling methods in the Tramline Project in biolcomplexity experimental basin in the Arctic; Presentation to the IARC(International Arctic Research Consortium) summer school students in Barrow, Alaska, June3, 2008.

    6.  The Tramline Project in The Barrow Biocomplexity; UIC Science Center; Presentation to the cohort of first Summer Science Internship in Ilisagvik College in Barrow Alaska; July 16, 2007.

    5.  Barrow Tramline Project; Inupiat Heritage Center, Barrow, Alaska; July 23, 2007.

    4.  Can an Automated Tram System be Optimized to Scale Structural Ecosystem Across Multiple Temporal and Spatial Scale, Presented at the Barrow Arctic Science Consortium, Barrow, Alaska; July 17, 2007. 

    3.  Remote Sensing of the Arctic Tundra; Jefferson High School; El Paso, TX; Presentation to the senior students of the Jefferson High School; March 22, 2007.

    2.  Measuring Ground Reflectance in Barrow, Alaska, Summer 2006, Presented at the Working Group meeting of SpecNet (Spectral Network, an International Network of Remote Sensing Experts) at NCEAS, University of California at Santa Barbara, Santa Barbara, California.

    1.  An Interdisciplinary Approach to Hyperspectral Studies of Arctic Tundra Vegetation; Presented at the Working Group meeting of the SpecNet (www.specnet.info) North at University of Alberta in Edmonton; Edmonton, Canada; September 14, 2007.