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Steven Voelker

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Plants, Soils, and Climate

Assistant Professor, Dendroclimatology

Contact Information

Go toOffice Location: AGRS 333
DialPhone: 435-797-2233
SendEmail: steve.voelker@usu.edu


Educational Background

PhD, Forest Science and Wood Science, Oregon State University, 2009
MS, Forest Ecology, University of Missouri, 2004
BS, Forest Management, University of Wisconsin-Stevens Point, 2001

Publications - Abstracts

    Publications - Books & Book Chapters

      Book Chapters

    * Has not been peer reviewed

    Publications - Fact Sheets

      * Has not been peer reviewed

      Publications - Curriculum

        * Has not been peer reviewed

        Publications - Journal Articles

          Academic Journal

        • Cornejo-Oviedo, E., Voelker, S., Mainwaring, D.B, Maguire, D.A, Meinzer, F.C, Brooks, J.R, (2017). Basal area growth, carbon isotope discrimination, and intrinsic water use efficiency after fertilization of Douglas-fir in the Oregon Coast Range. Forest Ecology and Management, 389, 1183-1195.
        • Voelker, S., Stambaugh, M.C, Brooks, J.R, Meinzer, F.C, Lachenbruch, B., Guyette, R.P, (2017). Evidence that higher CO2 increases tree growth sensitivity to temperature: a comparison of modern and paleo oaks. Oecologia, 183, 1183-1195.
        • Voelker, S., Meinzer, F.C, (2017). Where and when does stem cellulose δ18O reflect a leaf water enrichment signal?. Tree Physiology, 37, 551-553.
        • Voelker, S., Brooks, J.R, Meinzer, F.C, Anderson, R., Bader, M.K, Battipaglia, G., Becklin, K.M, Beerling, D., Bert, D., Betancourt, J.L, Dawson, T.E, Domec, J.C, Korner, K., Leavitt, S.W, Linder, S., Marshall, J.D, Mildner, M., Ogee, J., Panyushkina, I., Plumpton, H.J, Pregitzer, K.S, Saurer, M., Smith, A.R, Siegwolf, R., Stambaugh, M.C, Talhelm, A.F, Tardif, J.C, Van de Water, P.K, Ward, J.K, Wingate, L., (2016). A dynamic leaf gas exchange strategy is conserved in woody plants under changing ambient CO2: evidence from carbon isotope discrimination in paleo and CO2 enrichment studies. Global Change Biology22, 899-902.
        • Voelker, S., Stambaugh, M.C, Guyette, R.P, Feng, X., Grimley, D.A, Leavitt, S.W, Panyushkina, I.P, Grimm, D., Marsicek, J.P, Shuman, B., Curry, B.B, (2015). Deglacial hydroclimate of mid-continental North America. Quaternary Research, 83, 336-344.
        • Voelker, S., Meinzer, F.C, Lachenbruch, B., Brooks, J.R, Guyette, R.P, (2014). Drivers of radial growth and carbon isotope discrimination of bur oak (Quercus macrocarpa Michx.) across continental gradients in precipitation, vapor pressure deficit and irradiance. Plant, Cell & Environment, 37, 766-779.
        • Marias, D.E, Meinzer, F.C, Shaw, D.C, Woodruff, D.R, Voelker, S., Lachenbruch, B., (2014). Effect of hemlock dwarf mistletoe on the physiology of host western hemlock using tree ring 13C and 18O. Tree Physiology, 34, 595-607.
        • Saffell, B.J, Meinzer, F.C, Woodruff, D.R, Shaw, D.C, Voelker, S., Lachenbruch, B., (2014). Impact of Swiss needle cast infection on tree carbohydrate reserves. Tree Physiology, 34, 218-228.
        • Voelker, S., Brooks, J.R, Meinzer, F.C, Roden, J.S, Pazdur, A., Pawelczyk, S., Hartsough, P., Snyder, K., Plavcova, L., Santrucek, J., (2014). Isolating relative humidity: dual isotopes δ18O and δD as deuterium deviations from the global meteoric water line. Ecological Applications, 24, 960-975.
        • Lee, C., Voelker, S., Holdo, R.M, Muzika, R., (2014). Tree architecture as a predictor of growth and mortality after an episode of red oak decline in the Ozark Highlands of Missouri, U.S.A. Canadian Journal of Forest Research, 44, 1005-1012.
        • Saffell, B.J, Meinzer, F.C, Voelker, S., Shaw, D.C, Brooks, J.R, Lachenbruch, B., McKay, J., (2014). Tree-ring isotopes record the impact of a foliar fungal pathogen on CO2 assimilation and growth in Douglas-fir. Plant, Cell & Environment, 37, 1536-1547.
        • McCulloh, K.A, Johnson, D.M, Meinzer, F.C, Voelker, S., Lachenbruch, B., Domec, J., (2012). Hydraulic architecture of two species differing in wood density: opposing strategies in co-occurring tropical pioneer trees. Plant, Cell & Environment, 35, 116-125.
        • Voelker, S., Noirot-Cosson, P., Stambaugh, M.C, McMurry, E.R, Meinzer, F.C, Lachenbruch, B., Guyette, R.P, (2012). Spring temperature responses of oaks are synchronous with North Atlantic conditions during the last deglaciation. Ecological Monographs, 82, 169-187.
        • McCulloh, K.A, Meinzer, F.C, Sperry, J.S, Lachenbruch, B., Voelker, S., Woodruff, D.R, Domec, J., (2011). Comparative hydraulic architecture of tropical tree species representing a range of successional status and wood density. Oecologia, 167, 27-37.
        • Voelker, S., Lachenbruch, B., Meinzer, F.C, Strauss, S.H, (2011). Reduced wood stiffness and strength, and altered stem form, in young antisense 4CL transgenic poplar with reduced lignin contents. New Phytologist, 189, 1096-1109.
        • Voelker, S., Lachenbruch, B., Meinzer, F.C, Kitin, P., Strauss, S.H, (2011). Transgenic poplars with reduced lignin show impaired xylem conductivity, growth efficiency and survival. Plant, Cell & Environment, 34, 655-668.
        • Voelker, S., Lachenbruch, B., Meinzer, F.C, Jourdes, M., Ki, C., Patten, A.M, Davin, L.B, Lewis, N.G, Tuskan, G.A, Gunter, L., Decker, S.R, Selig, M.J, Sykes, R., Himmel, M.E, Kitin, P., Shevchencko, O., Strauss, S.H, (2010). Antisense down-regulation of 4CL expression alters lignification, tree growth and saccharification potential of field-grown poplar. Plant Physiology, 154, 874-876.
        • Kitin, P., Voelker, S., Lachenbruch, B., Meinzer, F.C, Strauss, S.H, (2010). Antisense down-regulation of 4CL expression alters lignification, tree growth and saccharification potential of field-grown poplar. Plant Physiology, 154, 887-898.
        • McCulloh, K.A, Sperry, J.S, Lachenbruch, B., Meinzer, F.C, Reich, P.B, Voelker, S., (2010). Comparative hydraulic architecture of tropical tree species representing a range of successional status and wood density. New Phytologist, 186, 439-450.
        • Voelker, S., Muzika, R., Guyette, R.P, (2008). Individual tree and stand level influences on the growth, vigor and decline of red oaks in the Ozarks. Forest Science, 54, 8-20.
        • Taylor, A.M, Brooks, J.R, Lachenbruch, B., Morrell, J.J, Voelker, S., (2007). Correlation of carbon isotope ratios in the cellulose and wood extractives of Douglas-fir. Dendrochronologia, 26, 125-131.
        • Parke, J.L, Oh, E., Voelker, S., Hansen, E.M, Buckles, G., Lachenbruch, B., (2007). Phytopthora ramorum colonizes tanoak xylem and is associated with reduced stem water transport. Phytopathology, 97, 1558-1567.
        • Voelker, S., Muzika, R., Guyette, R.P, Stambaugh, M.C, (2006). Historical CO2 growth enhancement declines with age in Quercus and Pinus. Ecological Monographs, 76, 549-564.

        * Has not been peer reviewed

        Publications - Literary Journal

          Nonfiction Prose

        * Has not been peer reviewed

        Publications - MultiMedia

          * Has not been peer reviewed

          Publications - Technical Reports

            * Has not been peer reviewed

            Publications - Translations & Transcripts

              Publications - Other

                * Has not been peer reviewed

                Scheduled Teaching

                PSC 6890, 7890 - Plants, Soils, and Climate Graduate Seminar, Spring 2018

                PSC 6890 - Plants, Soils, and Climate Graduate Seminar, Fall 2017

                PSC 7890 - Plants, Soils, and Climate Graduate Seminar, Fall 2017

                PSC 6900 - Special Problems in Plants, Soils, and/or Climate, Spring 2017


                Graduate Students Mentored