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Journal Articles Submitted or In Preparation

Okin, G.S., P. D’Odorico, Submitted, Counterintuitive effect of climate fluctuations on grass invasions in fireproof desert shrublands, American Naturalist.

Stewart, J., A.J. Parsons, J. Wainwright, G.S. Okin, B.T. Bestelmeyer, E.L. Fredrickson, W.H. Schlesinger, Submitted, Modelling emergent patterns of dynamic desert ecosystems as a function of changing landscape connectivity: Part one – theoretical framework, Ecological Modelling.

Alvarez, L.J., H.E. Epstein, J. Li, G.S. Okin, submitted, The effects of grass reduction and increased wind erosion on photosynthesis rates of desert grassland plants. Oecologia.

Shreve, C.M., G.S. Okin, T.H. Painter, submitted, Spatial and temporal trends in fractional snow covered area and daytime land surface temperature in the Tibetan Plateau 2000-2007 using MODIS data. Environmental Science Letters.

Alvarez, L.J., G.S. Okin, H.E. Epstein, in preparation, Evaluation of current shear stress partitioning models in a sparsely vegetated ecosystem, Journal of Geophysical Research-Earth Surfaces.

Alvarez, L.J., G.S. Okin, H.E. Epstein, J. Li, in preparation, Spatial distribution of vegetation in a desert environment.

Alvarez, L.J., G.S. Okin, H.E. Epstein, J. Li, in preparation, Community responses to wind erosion.

Peer-Reviewed Journal Articles and Articles in Press

Estes, L.D., P.R. Reillo, A.G. Mwangi, G.S. Okin, H.H. Shugart, In Press, Remote sensing of forest structural complexity indices or habitat and species distribution modeling, Remote Sensing of Environment.

Field, J.P., J. Belnap, D.D. Breshears, J.C. Neff, G.S. Okin, J.J. Whicker, T.H Painter, S. Ravi, M.C. Reheis, R.L. Reynolds, In Press, The ecology of dust: local- to global-scale terrestrial perspectives, Frontiers in Ecology and the Environment.

Okin, G.S., In Press. The contribution of brown vegetation to vegetation dynamics. Ecology.

Myint, S.W., A. Brazel, G.S. Okin, A. Buyantuyev, In Press. Combined effects of impervious surface and vegetation cover on the urban heat island effect in a rapidly expanding desert city, IEEE Journal of Selected Topics in Earth Observations and Remote Sensing.

Li, J.R., Okin, G.S., Alvarez, L.J. and Epstein, H.E., 2009. Sediment deposition and soil nutrient heterogeneity in two desert grassland ecosystems, southern New Mexico, southern New Mexico. Plant and Soil, 319(1-2): 67-84.

Shreve, C.M., Okin, G.S. and Painter, T.H., 2009. Indices for estimating fractional snow cover in the western Tibetan Plateau. Journal of Glaciology, 55(192): 737-745.

Li, J.R., Okin, G.S. and Epstein, H.E., 2009. Effects of enhanced wind erosion on surface soil texture and characteristics of windblown sediments. Journal of Geophysical Research-Biogeosciences, 114.

Wang, L., D'Odorico, P., Okin, G.S. and Macko, S.A., 2009. Isotope composition and anion chemistry of soil profiles along the Kalahari Transect. Journal of Arid Environments, 73(4-5): 480-486.

Wang, L., Okin, G.S., Macko, S.A., 2009, Satellite prediction of soil δ13C distributions in a southern African savanna, Journal of Geochemical Exploration 102: 137-141.

Ravi, Sujith, P. D'Odorico, L. Wang, C. White, G.S. Okin, S.A. Macko, S. Collins, 2009, Post-fire resource redistribution in desert grasslands: A possible negative feedback on land degradation, Ecosystems 12(3) 434-444. Wang, L., Okin, G.S., Macko, S.A., 2009, Satellite prediction of soil δ13C distributions in a southern African savanna, Journal of Geochemical Exploration, 102, 137-141.

Gu, J., X. Li, C. Huang, G.S. Okin, 2009, A simplified data assimilation method for reconstructing time-series MODIS NDVI data, Advances in Space Research, 44, 501-509.

Wang, L., G.S. Okin, K. K. Caylor, S. Macko, 2009, Spatial heterogeneity and sources of soil carbon in southern African savannas, Geoderma, 149, 402-408.

Okin, G. S., P. D'Odorico, and S. R. Archer, 2009, Impact of feedbacks on Chihuahuan desert grasslands: Transience and metastability, Journal Geophysical Research - Biogeosciences, 114, G01004, doi:10.1029/2008JG000833

Okin, G.S. A.J. Parsons, J. Wainwright, J.E. Herrick, B.T. Bestelmeyer, D.P.C. Peters, and E.L. Fredrickson, 2009, Do changes in connectivity explain desertification? BioScience, 59 (3): 237-244.

Mahowald, N., T.D. Jickells, A.R. Baker, P. Artaxo, C.R. Benitez-Nelson, G. Bergametti, T.C. Bond, Y. Chen, D.D. Cohen, B. Herut, N. Kubilay, R. Losno, C. Luo, W. Maenhaut, K.A. McGee, G.S. Okin, R.L. Siefert, S. Tsukuda, 2008. The global distribution of atmospheric phosphorus deposition and anthropogenic impacts, Global Biogeochemical Cycles. 22, GB4026, 10.1029/2008GB003240.

Myint, S., G.S. Okin, In Press, Modeling urban land covers using multiple endmember spectral mixture analysis, International Journal of Remote Sensing.

Elmore, A.J., J.M. Kaste, G.S. Okin, M.S. Fantle, 2008. Groundwater influences on atmospheric dust generation in deserts, Journal of Arid Environments, 72(10), 1753-1756.

Marshall, J.D., J.M Blair, D.P.C. Peters, G.S. Okin, A. Rango, M. Williams, 2008, Predicting and understanding ecosystem responses to climate change at continental scales, Frontiers in Ecology and the Environment, 6(5) pp 273-280. doi: 10.1890/070165

Li, J., G.S. Okin, L.J. Alvarez, and H.E. Epstein, 2008, Effects of wind erosion on the spatial heterogeneity of soil nutrients in two desert grassland communities, Biogeochemistry, 8(1) pp. 73-88, 10.1007/s10533-008-9195-6.

Okin, G.S., N. Mladenov, L. Wang, D. Cassel, K. K. Caylor, and S. Ringrose, 2008, Spatial patterns of soil nutrients in two southern African savannas, JGR-Biogeosciences, 113:G02011.

Estes, L.D., G.S. Okin, A.G. Mwangi, H.H. Shugart, 2008, Identifying a large forest herbivore’s habitat: a multi-scale approach combining field data and imagery from four sensors, Remote Sensing of Environment, 112: 2033-2050.

Okin, G. S., 2008, A new model of wind erosion in the presence of vegetation, Journal of Geophysical Research-Earth Surface, 113, F02S10, doi:10.1029/2007JF000758.

Ravi, S., D’Odorico, P., and G.S. Okin, 2007, Hydrologic and aeolian controls on vegetation patterns in arid landscapes, Geophysical Research Letters, 34, L24S23, doi:10.1029/2007GL031023.

D’Odorico, P., K.K. Caylor, G.S. Okin, T.M. Scanlon, 2007, On soil moisture-vegetation feedbacks in dryland plant ecosystems, JGR-Biogeosciences, 112, G04010, DOI: 10.1029/2006JG000379

Li, J., G.S. Okin, L.J. Alvarez, and H.E. Epstein, 2007, Quantitative assessment of wind erosion and soil nutrient loss in desert grasslands of the southwestern United States, Biogeochemistry, 10.1007/s10533-007-9142-y, 85(3) 317-332.

Diekmann, L., D. Lawrence, and G.S. Okin, 2007. Changes in the spatial variation of soil properties following shifting cultivation in a Mexican dry tropical forest, Biogeochemistry, 10.1007/s10533-007-9107-1.

Okin, G.S., 2007, Relative Spectral Mixture Analysis - a multitemporal index of total vegetation cover, Remote Sensing of Environment, 106(4), 467-479.

Wang, L., G.S. Okin, J. Wang, H.E. Epstein, and S. Macko, 2007, Predicting 15N concentration from Reflectance Spectra (400-2500 nm) at Leaf and Canopy Scales, Geophysical Research Letters, 35, L02401, doi:10.1029/2006GL028506

Scull, P. and G.S. Okin, 2007, Sampling challenges posed by continental scale soil landscape modeling, Science of the Total Environment, 372, 645-656.

McGlynn, I.O., and G.S. Okin, 2006, Characterization of shrub distribution using high spatial resolution remote sensing: ecosystem implication for a former Chihuahuan Desert grassland. Remote Sensing of Environment, 101, 554-566.

Ravi, S., T.M. Zobeck, T.M. Over, G.S. Okin, and P. D’Odorico, 2006, On the effect of wet bonding forces in air-dry soils on threshold friction velocity of wind erosion, Sedimentology, doi: 10.1111/j.1365-3091.2006.00775.x,

Okin, G.S., D.A. Gillettte, and J.E. Herrick, 2006, Multi-scale controls on and consequences of aeolian processes in landscape change in arid and semiarid environments, Journal of Arid Environments, 65, 253-275.

Mahowald N.M, P.E. Artaxo, A.R. Baker, D. Jickells, G.S. Okin, J.T. Randerson, and A.R. Townsend, 2005. Impacts of biomass burning emissions and land use on Amazonian atmospheric phosphorus cycling and deposition, Global Biogeochemical Cycles, 19, No. 4, GB4030, 10.1029/2005GB002541.

Scull, P., G. Okin, O.A. Chadwick, and J. Franklin, 2005. A comparison of methods to predict soil surface texture in an alluvial basin, Professional Geographer, 57(3), 423-437.

Ballantine, J.A.C., G. S. Okin, D.E. Prentiss, and D.A. Roberts, 2005. Mapping North African landforms using continental-scale unmixing of MODIS imagery, Remote Sensing of Environment, 47(4) 470-483.

Okin, G.S., 2005. Dependence of wind erosion on surface heterogeneity, Journal of Geophysical Research, 110, D11208.

Okin, G.S., and T.H. Painter, 2004, Effect of grain size on spectral reflectance of sandy desert surfaces, Remote Sensing of Environment, 89(3) pp 272-280.

Okin, G.S., N. M. Mahowald, O.A. Chadwick, P.E. Artaxo, 2004, The impact of desert dust on the biogeochemistry of phosphorus in terrestrial ecosystems, Global Biogeochemical Cycles, 18(2), 10.1029/2003GB002145.

Okin, G.S., and M.C. Reheis, 2002, An ENSO predictor of wind erosion and dust emission in the southwest United States: Geophysical Research Letters. V 29, no. 9. 10.1029/2001GL014494.

Okin, G.S., W.J. Okin, B. Murray, and D.A. Roberts, 2001, Practical limits on hyperspectral vegetation discrimination in arid and semiarid environments: Remote Sensing of Environment, v. 77, 212-225.

Okin, G.S., and D.A. Gillette, 2001, Distribution of vegetation in wind-dominated landscapes: Implications for wind erosion modeling and landscape processes: Journal of Geophysical Research, v. 106, 9673-9683.

Okin, G.S., W.H. Schlesinger, and B. Murray, 2001, Degradation of Sandy Arid Shrubland Environments: Observations, process modeling and management implications: Journal of Arid Environments, v. 47, 123-144.

Gilbert, J.V., and G.S. Okin, 1995, Laser-induced emission from NFCl radicals isolated in low-temperature argon matrices, Journal of Physical Chemistry, v. 99, p. 11365-11369.

Larrabee, J.A., C.M. Alessi, E.T. Asiedu, J.O. Cook, K.R. Hoerning, L.J. Klingler, G.S. Okin, S.G. Santee, and T.L. Volkert, 1997, Magnetic circular dichroism spectroscopy as a probe of geometric and electronic structure of Cobalt(II)- substituted proteins: Ground-state zero-field splitting as a coordination number indicator, Journal of the American Chemical Society, v. 119, p. 4182-4196.

Mulinax, R.L., G.S. Okin, and R.D. Coombe, 1995, Gas-Phase synthesis, structure, and dissociation of boron triazide, Journal of Physical Chemistry, v. 99, p. 6294-6300.

Refereed Book Chapters

Wang, L., G.S. Okin, S.A. Macko, In Press, Remote sensing of nitrogen and carbon isotopic composition in terrestrial ecosystems in Isoscapes, Springer Netherlands.

Okin, G.S., 2002, Toward a Unified View of Biophysical Land Degradation Processes in Arid and Semi-arid Lands, in Global Desertification: Do Humans Cause Deserts? J.F. Reynolds & D.M. Stafford Smith, eds. Dahlem University Press, Berlin, pp. 95-109.

Robbins, P.F., N. Abel, H. Jiang, M. Mortimore, M. Mulligan, G.S. Okin, D.M. Stafford Smith, B.L. Turner II, 2002, Desertification at the community scale: sustaining dynamic human-environment systems in Global Desertification: Do Humans Cause Deserts? J.F. Reynolds & D.M. Stafford Smith, eds. Dahlem University Press, Berlin, pp. 326-355.

Okin, G.S., B. Murray, and W.H. Schlesinger, 2001, Desertification in an arid shrubland in the southwestern United States: Process modeling and validation, in Land Degradation: Papers Selected from Contributions to the Sixth meeting of the International Geographical Union's Commission on Land Degradation and Desertification, Perth, Western Australia, 20-28 September 1999, pp. 53-70, edited by A. Conacher, Kluwer Academic Publishers, Dordrecht.

Unrefereed Book Chapters

Li, J. and G.S. Okin, in press, Carbon and nitrogen dynamics with enhanced wind erosion-Model evaluation and prediction in Title TBD, Nova Publishers.

Hartley A.E., N. Barger, J. Belnap, G.S. Okin. 2007. Nutrient Cycling in Dryland Ecosystems. In: Marschner P, Rengel Z (eds) Nutrient Cycling in Terrestrial Ecosystems. Soil Biology Series. Springer Verlag.

Okin, G.S., and D.A. Gillette, 2004, Modelling wind erosion and dust emission on vegetated surfaces in Spatial Modelling of the Terrestrial Environment R. Kelly, N. Drake, and S. Barr, eds, John Wiley and Sons, pp. 137-156.

Okin, G.S. and D. A. Roberts, 2004, Remote Sensing in Arid Environments: Challenges and Opportunities, in Manual of Remote Sensing, Remote Sensing for Natural Resource Management and Environmental Monitoring, Volume 5, S. Ustin, ed., John Wiley and Sons, New York.

Other Publications

Epstein, H.E., G.S. Okin, J. Li, L.J. Alvarez, 2009 Wind erosion and ecosystem consequences following vegetation removal in a Chihuahuan Desert grassland, Newsletter of the Global Land Project International Project Office, n. 5, June 2009, pp. 3 – 4.