Presentations at scientific meetings_______________________________________________________ B. Torbeyns, A. Thijs, R. Merckx. Release kinetics of PAH in coal tar and creosote contaminated soils. International workshop 'Prospects and limits of natural attenuation at tar oil contaminated sites', Dresden, Germany, 2001. A. Thijs, M.E. Litvak. Soil organic carbon changes due to woody encroachment by Juniperus ashei and Prosopis glandulosa in a Central Texas Savanna. Ecological Society of America, annual meeting, Montreal, Canada, 2005. J.F. Kjelgaard, J.L. Heilman, K.J. McInnes, M.K. Owens, M.E. Litvak, L. Dreiling, M. Bendivas, A. Thijs, N. Cramer. Carbon Dioxide and Energy Exchange Dynamics: the Interaction of Ashe Juniper Encroachment onto Grassland/Live Oak Savannas on the Edwards Plateau. American Geophysical Union, Fall Meeting, San Francisco, 2005. M.E. Litvak, A. Thijs. The impact of woody encroachment on carbon dynamics in a C3/C4 grassland in Texas. Ecological Society of America, annual meeting, Memphis, Tennessee, 2006. M.E. Litvak, A. Thijs. AmeriFlux Science Meeting, Boulder, Colorado, 2006. A. Thijs, M.E. Litvak Contributions of Different Ecosystem Components to the Carbon Balance of an Encroaching Savanna. American Geophysical Union, Fall Meeting, San Francisco, 2006. M.E. Litvak, J.L. Heilman, K.J. McInnes, M.K. Owens, A. Thijs. Changes in ecosystem structure related to the type and extent of woody cover alter carbon dynamics and surface energy exchange in central Texas ecosystems. American Geophysical Union, Fall Meeting, San Francisco, 2006. A.Thijs, M.E. Litvak, C-T. Lai. Insights from Tower-Flux, Physiological and Stable Isotope Measurements to Elucidate Climatic and Structural Controls on CO2 Exchange in an Encroaching Savanna. American Geophysical Union, Fall Meeting, San Francisco, 2007. M.E. Litvak, J.L. Heilman, K.J. McInnes, A. Thijs, J.F. Kjelgaard. Influence of Vegetation Cover on Rain Pulse Responses in Semi-Arid Savannas in Central Texas. American Geophysical Union, Fall Meeting, San Francisco, 2007. Peer-reviewed Publications:________________________________________________________ De Brouwere K., Thijs A., Hens M., and Merckx R. (2003) Forms and availability of soil phosphorus in temperate forests in southern Chile and Flanders. Gayana Botanica, 60, 17-23. Maertens E., Thijs A, Smolders E., Degryse F., Cong P.T., and Merckx R. (2004) An anion resin membrane technique to overcome detection limits of isotopically exchanged P in P-sorbing soils. European Journal of Soil Science, 55, 63-69. In revie Heilman J.L., Litvak M.E., McInnes K.J., Kjelgaard J.F., Thijs A., Owen M.K., Schwinning S. Submitted to Journal of Hydrology. Impact of woody cover on energy balance and water use in karst landscapes of the Edwards Plateau, Texas In preparation: Thijs A., Litvak M.E. (in prep) Patterns and models of soil and ecosystem respiration processes of an encroaching savanna. Thijs A., Litvak M.E. (in prep) Modeling the effect of drought on leaf level gas exchange in 4 functionally different species of an encroaching savanna. Thijs A., Litvak M.E. (in prep) Bottom-up approach to understanding the role of grasses and encroaching trees in the carbon dynamics of a semi-arid savanna. Litvak et al (in prep) Understanding woody encroachment as a carbon sink on the Edwards Plateau, Texas. Lai et al (in prep) Top-down approach to assess importance of C3 and C4 photosynthesis in respiratory and photosynthetic CO2 fluxes in an encroaching savanna.
