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Steven Voelker

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Plants, Soils, and Climate

Assistant Professor, Dendroclimatology

Assistant Professor

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    * Has not been peer reviewed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      * Has not been peer reviewed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        * Has not been peer reviewed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

        • Voelker, S., Wang, S., (2019). Tree-ring isotopes adjacent to Lake Superior reveal cold winter anomalies for the Great Lakes region of North America. Scientific Reports (Nature)
        • Voelker, S., (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., (2017). Evidence that higher CO2 increases tree growth sensitivity to temperature: a comparison of modern and paleo oaks. Oecologia, 183, 1183-1195.
        • Voelker, S., (2017). Where and when does stem cellulose δ18O reflect a leaf water enrichment signal?. Tree Physiology, 37, 551-553.
        • Voelker, S., (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., (2015). Deglacial hydroclimate of mid-continental North America. Quaternary Research, 83, 336-344.
        • Voelker, S., (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.
        • Voelker, S., (2014). Effect of hemlock dwarf mistletoe on the physiology of host western hemlock using tree ring 13C and 18O. Tree Physiology, 34, 595-607.
        • Voelker, S., (2014). Impact of Swiss needle cast infection on tree carbohydrate reserves. Tree Physiology, 34, 218-228.
        • Voelker, S., (2014). Isolating relative humidity: dual isotopes δ18O and δD as deuterium deviations from the global meteoric water line. Ecological Applications, 24, 960-975.
        • Voelker, S., (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.
        • Voelker, S., (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.
        • Voelker, S., (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., (2012). Spring temperature responses of oaks are synchronous with North Atlantic conditions during the last deglaciation. Ecological Monographs, 82, 169-187.
        • Voelker, S., (2011). Comparative hydraulic architecture of tropical tree species representing a range of successional status and wood density. Oecologia, 167, 27-37.
        • Voelker, S., (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., (2011). Transgenic poplars with reduced lignin show impaired xylem conductivity, growth efficiency and survival. Plant, Cell & Environment, 34, 655-668.
        • Voelker, S., (2010). Antisense down-regulation of 4CL expression alters lignification, tree growth and saccharification potential of field-grown poplar. Plant Physiology, 154, 887-898.
        • Voelker, S., (2010). Antisense down-regulation of 4CL expression alters lignification, tree growth and saccharification potential of field-grown poplar. Plant Physiology, 154, 874-876.
        • 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., (2008). Individual tree and stand level influences on the growth, vigor and decline of red oaks in the Ozarks. Forest Science, 54, 8-20.
        • Voelker, S., (2007). Correlation of carbon isotope ratios in the cellulose and wood extractives of Douglas-fir. Dendrochronologia, 26, 125-131.
        • Voelker, S., (2007). Phytopthora ramorum colonizes tanoak xylem and is associated with reduced stem water transport. Phytopathology, 97, 1558-1567.
        • Voelker, S., (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