CURRICULUM VITA

                                                                             of

                                                                Steven W. Leavitt

                                                                      June 2008

 

TITLE-           Professor of Dendrochronology, Laboratory of Tree-Ring Research, University of Arizona, Tucson, AZ  85721

                        (Phone 602-621-6468; FAX 602-621-8229)

 

EDUCATION-

            May 1982                    Ph.D. Geosciences.  University of Arizona, Tucson

(Dissertation title: Inference of past atmospheric d13C and PCO2 from 13C/12C measurements in tree rings)

            Aug 1977                     M.S. Environmental Sciences.  University of Virginia, Charlottesville

(Thesis title: Soil-plant relationships of nutrient and non-nutrient metals in Louisa Co., Virginia)

            June 1971                    B.S. Geology.  University of Illinois, Urbana

(Thesis title: The geology and genesis of magmatic iron deposits at Kiruna and Gellivare, Sweden, and Iron Mountain, Missouri)

 

PROFESSIONAL BACKGROUND-

            Jan 2008 to                  Assoc. Director, Laboratory of Tree-Ring Research

              present

            Jul 1996 to                   Professor, University of Arizona

              present

            Jul 1992 to                   Acting Director, Laboratory of Tree-Ring Research

              Jul 1993

            Aug 1990 to                 Associate Professor of Dendrochronology, University of Arizona

              Jun 1996       

            Jul 1989 to                   Associate Professor of Geology, University of Wisconsin-Parkside

              Aug 1990                       

            Aug 1984 to                 Assistant Professor of Geology, University of Wisconsin-Parkside

              Jul 1989        

            Jun 1982 to                  Post-doc Research Associate, University of Arizona, Dept. of

              Jul 1984                     Geosciences

 

TEACHING EXPERIENCE-

            Graduate teaching assistant - Environmental Geology, Physical Geology, Mineralogy, Optical Mineralogy, Geology Summer Field Camp.

            As Professor - The Weather, Earth & Man, Environmental Earth Science, Geochemistry, Environmental Geology, Hydrogeology, Dendrochronology, Senior Seminar, Mineralogy, Petrology, Introduction to Global Change, Tree Rings as Chronometers, Dendrochronology: Biological Applications, Global Biogeochemical Cycles, Introduction to Global Change (Nats101)

 

RESEARCH INTERESTS-

            Light stable-isotope geochemistry applied to geological and environmental problems; the global carbon cycle in geologic time and the recent imbalance from anthropogenic effects; environmental and climate reconstructions; dendrochronology; carbon storage in soils under high CO2 conditions.

 

PROFESSIONAL SOCIETIES- The Geochemical Society, American Geophysical Union, The Tree-Ring Society, American Quaternary Association, Ecological Society of America

 

 

PUBLICATIONS-

 

1979

Holle, R.R., Simpson, J. and Leavitt, S.W., 1979.  GATE B-scale cloudiness from whole-sky cameras on four U.S. ships.  Monthly Weather Rev. 107:874-895.

Leavitt, S.W. and Goodell, H.G., 1979.  Evaluation of biogeochemical prospecting methods in the search for sulfide deposits in the Appalachian, Piedmont, Virginia, USA.  J. Geochem. Expl. 11:89-100.

Leavitt, S.W., Dueser, R.D. and Goodell, H.G., 1979.  Plant regulation of essential and non-essential heavy metals.  J. Appl. Ecol. 16:203-212.

 

1982

Leavitt, S.W. and Long, A., 1982.  Evidence for 13C/12C fractionation between tree leaves and wood.  Nature 298:742-744.

Leavitt, S.W. and Long, A., 1982.  Stable carbon isotopes as a potential supplemental tool in dendrochronology.  Tree-Ring Bulletin 42:49-55.

Leavitt, S.W., 1982.  Annual volcanic CO2 emission: an estimate from eruption chronologies.  Environmental Geology 4:15-21.

Leavitt, S.W., Donahue, D.J. and Long, A., 1982.  Charcoal production from wood and cellulose: implications to radiocarbon dates and accelerator target production.  Radiocarbon 24:27-35.

 

1983

Leavitt, S.W. and Long, A., 1983.  An atmospheric 13C/12C reconstruction generated through removal of climate effects from tree-ring 13C/12C measurements.  Tellus 35B:92-102.

Leavitt, S.W. and Long, A., 1983.  Possible climatic response of d13C (cellulose) in leaves of pinyon pine in Arizona, USA.  Isotope Geos. 1:169-180. (pdf)

Leavitt, S.W. and Long, A., 1983.  On a 50-year "climate-free" d13C record from juniper tree rings.  Radiocarbon 25:267-268.

 

1984

Leavitt, S.W. and Long, A., 1984.  Sampling strategy for stable carbon isotope analysis of tree rings in pine.  Nature 301:145-147.

 

1985

Leavitt, S.W. and Long A., 1985.  Stable-carbon isotopic composition of maple sap and foliage.  Plant Physiology 78:427-429.

Leavitt, S.W. and Long, A., 1985.  The global biosphere as net CO2 source or sink:  evidence from carbon isotopes in tree rings.  In Planetary Ecology, Caldwell, D.E., Brierly, J.A. and Brierly, C.L., eds.  Van Nostrand Reinhold Company, New York, p. 89-99.

Leavitt, S.W., Long, A. and Dean, J.S., 1985.  Tree-ring dating through pattern-matching of stable-carbon isotope time series.  Tree-Ring Bulletin 45:1-9.  (Published in 1986).

 

1986

Leavitt, S.W. and Long, A., 1986.  Trends of 13C/12C ratios in pinyon pine tree rings of the American southwest and the global carbon cycle.  Radiocarbon 28:376-382.

Leavitt, S.W. and Long, A., 1986.  Stable-carbon isotope variability in tree foliage and wood.  Ecology 67:1002-1010.

 

1987

Leavitt, S.W. and Long, A., 1987.  Influence of site disturbance on d13C isotopic time series from tree rings.  In Proceedings of the International Symposium on Ecological Aspects of Tree-Ring Analysis, U.S. Dept. of Energy/U.S. Environ. Protection Agency/U.S. Dept. of Agriculture, Publ. CONF-8608144, p. 119-129.  Available through Natl. Technical Information Service, U.S. Dept. of Commerce.

Long, A., Leavitt, S.W. and Cheng, S., 1987.  Carbon-13/Carbon-12 variations in bristlecone pine over the past 600 years and their relation to climate and global atmospheric CO2. In Proceedings of the International Symposium on Ecological Aspects of Tree-Ring Analysis, U.S. Dept. of Energy/ U.S. Environ. Protection Agency/U.S. Dept. of Agriculture, Publ. CONF-8608144, p. 485-493. Available through Natl. Technical Information Service, U.S. Dept. of Commerce.

Leavitt, S.W. and Long, A., 1987.  Stable-carbon isotopic composition of plants near an Arizona smelter.  In The Practical Applications of Trace Elements and Isotopes to Environmental Biogeochemistry and Mineral Resources Evaluation, Hurst, R.W., Davis, T.E. and Augustithis, S.S., eds. Theophrastus Publications, S.A., Athens, p. 47-57.

Leavitt, S.W., 1987.  Stable-carbon isotopes in tree rings as environmental indicators.  In The Practical Applications of Trace Elements and Isotopes to Environmental Biogeochemistry and Mineral Resources Evaluation, Hurst, R.W., Davis, T.E. and Augustithis, S.S., eds. Theophrastus Publications, S.A., Athens, p. 61-73.

 

1988

Leavitt, S.W. and Long, A., 1988.  Intertree variability of d13C in tree rings.  In Stable Isotopes in Ecological Research, Rundel, P.W., Ehleringer, J.R., and Nagy, K.A., eds.  Springer-Verlag, New York, Chapter 7.

Leavitt, S.W. and Long, A., 1988.  Stable carbon isotope chronologies from trees in the southwestern United States.  Global Biogeochemical Cycles 2:189-198.

 

1989

Leavitt, S.W. and Long, A., 1989.  Drought indicated in carbon-13/carbon-12 ratios of southwestern tree rings.  Water Resources Bulletin 25:341-347.

Leavitt, S.W. and Long, A., 1989.  Accelerator-measured 14C activity in tree rings from the vicinity of the first atomic bomb test.  Radiocarbon 31:762-765.

Leavitt, S.W. and Long, A., 1989.  The atmospheric d13C record as derived from 56 pinyon trees at 14 sites in the southwestern U.S.  Radiocarbon 31:469-474.

Leavitt, S.W. and Long, A., 1989.  Variation of concentration, 14C activity and 13C/12C ratios of CO2 in air samples from Kitt Peak, Arizona.  Radiocarbon 31:464-468.

 

1990

Leavitt, S.W. and Parkhurst, G.P., 1990.  Radon concentrations in water from private wells in southeastern Wisconsin.  Wisconsin Geological and Natural History Survey Open-File Report WOFR1990-02, 17 p.

 

1991

Leavitt, S.W., 1991,  The Great Lakes forest fires of 8-10 October 1871.  In Global Biomass Burning, Levine, J.S., ed., MIT Press, Cambridge, Massachusetts, p. 519-522.

Leavitt, S.W. and Danzer, S.R., 1991.  Chronology from plant matter.  Nature 352: 671.

 

Leavitt, S.W. and Long, A., 1991.  Seasonal stable-carbon isotope variability in tree rings: possible paleoenvironmental signals.  Chemical Geology (Isotope Geoscience Section) 87:59-70.

 

1992

Leavitt, S.W., 1992.  Isotopes and trace elements in tree rings.  Lundqua Report 34: 182-190.

Leavitt, S.W., 1992.  Stable-carbon isotope time series from tree rings of Two Creeks wood (ca. 11,800 yr BP). Lundqua Report 34: 191-192.

Hughes, M.K. and Leavitt, S.W., 1992.  Report of the workshop, Prospects for temporal extension of the radiocarbon calibration, 19 May 1991.  Radiocarbon 34: 941.

Leavitt, S.W. and Kalin, R.M., 1992.  A new tree-ring width, d13C and 14C investigation of the Two Creeks site.  Radiocarbon 34:792-797.

Leavitt, S.W. and Danzer, S.R., 1992. d13C variations in C3 plants over the past 50,000 years.  Radiocarbon 34:783-791.

Leavitt, S.W. and Long, A., 1992.  Altitudinal differences in d13C of bristlecone pine. Naturwissenschaften 79:178-180.

Leavitt, S.W., Paul, E.A., Kimball, B.A. and Hendrey, G.R., 1992.  Isotopic estimation of inputs of carbon to cotton soils under FACE CO2 enrichment. DOE Research Summary, No. 22, December, 4 pp.

Leavitt, S.W. and Newberry, T., 1992.  Systematics of stable-carbon isotopic differences between gymnosperm and angiosperm trees.  Plant Physiol. (Life Sci. Adv.) 11:257-262.

 

1993

Leavitt S.W. and Danzer, S.R., 1993. Method for batch processing small wood samples to holocellulose for stable-carbon isotope analysis. Analytical Chemistry 65:87-89.

Leavitt, S.W., 1993.  Seasonal 13C/12C changes in tree rings:  species and site coherence, and a possible drought influence. Canadian Journal of Forest Research 23:210-218.

Leavitt, S.W., 1993.  Environmental Information from 13C/12C ratios of wood.  Geophysical Monograph 78:325-331 (Amer. Geophys. Union).

Schimmelmann, A., Miller, R.F. and Leavitt, S.W., 1993.  Hydrogen isotopic exchange and stable isotope ratios in cellulose, wood, chitin, and amino acids.  Geophysical Monograph 78:367-374 (Amer. Geophys. Union).

Dupouey, J.-L., Leavitt, S., Choisnel, E. and Jourdain, S., 1993.  Modelling carbon isotope fractionation in tree rings based on effective evapotranspiration and soil water status. Plant, Cell and Environ. 16:939-947.

Leavitt, S.W., 1993.  Review of Geomorphic Responses to Climatic Change by William B. Bull, Bull. Am. Meteorol. Soc. 74:105.

 

1994

Van de Water, P.K., Leavitt, S.W. and Betancourt, J.B., 1994.  Trends in stomatal density and 13C/12C leaves during the last glacial-interglacial cycle.  Science 264: 239-243.

Leavitt, S.W., 1994.  Major wet interval in White Mountains Medieval Warm Period evidenced in d13C of bristlecone pine tree rings.  Climatic Change 26:299-307.

Leavitt, S.W. and Lara, A., 1994.  South American tree rings show declining δ13C trend.  Tellus 46B: 152-157.

Leavitt, S.W., Paul, E.A., Kimball, B.A., Hendrey, G.R., Mauney, J.R., Rauschkolb, R., Rogers, Jr., H., Lewin, K.F., Nagy, J., Pinter, Jr., P.J. and Johnson, H.B., 1994. Carbon isotope dynamics of CO2-enriched FACE cotton and soils.  Agricultural and Forest Meteorolology 70: 87-101.

Leavitt, S.W., 1994.  Review of Climate Change and Human Impact on the Landscape by F.M. Chambers (ed.), Bull. Am. Meteorol. Soc. 75: 640-641.

 

1995

Leavitt, S.W., Liu, Y., Hughes, M.K., Liu, R., An, Z., Gutierrez, G.M., Danzer, S.R. and Shao, X., 1995. A single-year d13C chronology from Pinus tabulaeformis (Chinese pine) tree rings at Huangling, China.  Radiocarbon 37: 605-610.

Leavitt, S.W., Hughes, M.K., Liu, Y., and An, Z., 1995.  Stable-carbon isotope tree-ring chronologies from Xian, China.  In Tree Rings from the Past to the Future, Proceedings of the International Workshop on Asian and Pacific Dendrochronology, Tsukuba, Japan, March 4-9, Forestry and Forest Products Research Institute Scientific Meeting Report 1 (ISSN 1341-1969), Tsukuba, Japan, pp. 182-186.

Paul, E.A., Horwath, W.R., Harris, D., Follett, R., Leavitt, S.W., Kimball, B.A. and Pregitzer, K., 1995.  Establishing the pool sizes and fluxes in CO2 emissions from soil organic matter turnover.  In Advances in Soil Science: Soils and Global Change, Lal, R., Kimble, J., Levine, E. and Stewart, B.A., eds., Lewis Publishers, Boca Raton, Florida, p. 297-305.

 

1996

Liu, Y., Leavitt, S.W., Hughes, M.K., and Wu, X., 1996.  Stable carbon isotopes in tree rings from Huangling, China, and climate variation.  Science in China (Series D) 39: 152-161.

Leavitt, S.W., Follett, R.F. and Paul, E.A., 1996.  Estimation of slow and fast-cycling organic carbon pools from 6N HCl hydrolysis.  Radiocarbon 38: 231-239.

Leavitt, S.W., Paul, E.A., Pendall, E., Pinter, P.J. and Kimball, B.A., 1996.  Field variability of carbon isotopes in soil organic carbon.  Nuclear Instruments and Methods in Physics Research B 123: 451-454.

 

1997

Leavitt, S.W., Paul, E.A., Galadima, A., Nakayama, F.S., Danzer, S.R., Johnson, H. and Kimball, B.A., 1997.  Carbon isotopes and carbon turnover in cotton and wheat FACE experiments.  Plant and Soil 187: 147-155.

Follett, R.F., Paul, E.A., Leavitt, S.W., Halvorson, A.D. and Peterson, G.A., 1997.  Determination of soil organic matter pool sizes and dynamics: 13C/12C ratios of Great Plains soils in wheat-fallow cropping systems. Soil Science Society of America Journal 61: 1068-1077.

Bert, D., Leavitt, S.W. and Dupouey, J.-L., 1997. Variations of wood d13C and water-use efficiency of Abies alba during the last century.  Ecology 78: 1588-1596.

Paul, E.A., Follett, R.F., Leavitt, S.W., Halvorson, A., Peterson, G. and Lyon, D., 1997.  Determination of the pool sizes and dynamics of soil organic matter: Use of carbon dating for Great Plains soils. Soil Science Society of America Journal 61:1058-1067.

Kochis, N.S. and Leavitt, S.W., 1997.  Radon emanations from soil of Kenosha, Racine and Waukesha Counties, Southeastern Wisconsin. Geoscience Wisconsin 16:55-62.

Pewe, T.L., Berger, G.W., Westgate, J.A., Brown, P.M. and Leavitt, S.W., 1997.  Eva Interglaciation Forest Bed, Unglaciated East Central Alaska: Global Warming 125,000 Years Ago.  Geological Society of America Special Paper 319, 54 p.

Leavitt, S.W., 1997.  Review of Nuclear Techniques in Soil-Plant Studies for Sustainable Agriculture and Environmental Preservation by IAEA and FAO.  Radiocarbon 39: 355.

 

1998

Shanley, J.B. and 25 other authors including Leavitt, S.W., 1998.  Isotopes as indicators of environmental change.  In Isotope Tracers in Catchment Hydrology, Kendall, C. and McDonnell, J.J., eds., pp. 762-816, Elsevier.

Thompson, T.L., White, S.A., Leavitt, S.W., Pendall, E., and Matthias, A.D., 1998.  Nitrogen and carbon dynamics in a wheat agroecosystem under elevated atmospheric CO2.  In Proc. of the Dahlia Greidinger International Symposium on Fertilization and the Environment, Mordvelt, J.J, ed., pp. 182-192.

Leavitt, S.W., Wright, W.E. and Long, A., 1998.  ENSO signal in d13C of pre‑ and post‑False Latewood of ponderosa Pine Tree Rings in Southeastern Arizona.  Proceedings of 14th Annual Pacific Climate (PACLIM) Workshop, Wilson, R. and Tharp, V.L. (eds.), April 6-9, 1997, Two Harbors, Santa Catalina Island.  Technical Report 57 of the Interagency Ecological Program for the Sacramento-San Joaquin Estuary, California Department of Water Resources, pp. 37-44.

Leavitt, S.W., 1998.  Review of Global Continental Palaeohydrology by K.J. Gregory, L. Starkel, and V.R. Baker (eds.), Bull. Amer. Meteor. Soc. 79: 665-666.

Leavitt, S.W., 1998.  Review of Biogeochemistry, An Analysis of Global Change by W.H. Schlesinger, EOS (Trans. Amer. Geophys. Union) 79(2): 20.

 

1999

Leavitt, S.W., Wright, W.E. and Long, A., 1999. Evidence for ENSO in tree-ring d13C along a 500-km E-W transect in southern Arizona and New Mexico.  Proceedings of the 15th Pacific Climate (PACLIM) Workshop, R. Wilson and L. Buffaloe (eds.), April 27-30, 1998. Technical Report 64 of the Interagency Ecological Program for the Sacramento-San Joaquin Estuary, California Department of Water Resources, pp. 61-67.

Wright, W.E., Leavitt, S.W., Long, A., 1999.  ENSO teleconnections: Eastern Pacific Sea Surface temperature correlations with d18O in southeastern Arizona precipitation and tree cellulose.  Proceedings of the 15th Pacific Climate (PACLIM) Workshop, R. Wilson and L. Buffaloe (eds.), April 27-30, 1998.  Technical Report 64 of the Interagency Ecological Program for the Sacramento-San Joaquin Estuary, California Department of Water Resources, pp. 97-109.

Kimball, B.A., LaMorte, R.L., Pinter Jr., P.J., Wall, G.W., Hunsaker, D.J., Adamsen, F.J., Leavitt, S.W., Thompson, T.L., Matthias, A.D., and Brooks, T.J., 1999.  Free-air CO2 enrichment (FACE) and soil nitrogen effects on energy balance and evapotranspiration of wheat.  Water Resour. Res. 35(4): 1179-1190.

Pendall, E., Betancourt, J.L. and Leavitt, S.W., 1999.  Paleoclimatic significance of dD and d13C values in piņon pine needles from packrat middens spanning the last 40,000 years. Palaeogeography, Palaeoclimatology, Palaeoecology 147: 53-72.

Adamsen, F.J., Pinter, P.J., Barnes, E.M., LaMorte, R.L., Wall, G.W., Leavitt, S.W. and Kimball, B.A., 1999.  Measuring wheat senescence with a digital camera.  Crop Science 39: 719-724.

 

2000

Adam, N.R., Wall, G.W., Kimball, B.A., Pinter, P.J. Jr., LaMorte, R.L., Hunsaker, D.J., Adamsen, F.J., Thompson, T., Matthias, A.D., Leavitt, S.W., and Webber, A.N., 2000.  Acclimation response of spring wheat in a free-air CO2 enrichment (FACE) atmosphere with variable soil nitrogen regimes. I. Leaf position and phenology determine acclimation response.  Photosynthesis Research 66: 65-77.

Brooks, T.J., Wall, G.W., Pinter, P.J., Kimball, B.A., LaMorte, R.L., Leavitt, S.W., Matthias, A.D., Adamsen, F.J., Hunsaker, D.J. and Webber, A.N., 2000.  Acclimation response of spring wheat in a free-air CO2 enrichment (FACE) atmosphere with variable soil nitrogen regimes: Canopy architecture and gas exchange.  Photosynthesis Research 66(1-2): 97-108.

Hunsaker D.J., Kimball B.A., Pinter P.J., Wall G.W., LaMorte R.L., Adamsen F.J., Leavitt S.W.,Thompson T.L., Matthias A.D. and Brooks T.J., 2000. CO2 enrichment and soil nitrogen effects on wheat evapotranspiration and water use efficiency. Agriculture and Forest Meteorology 104: (2) 85-105

Pinter Jr., P.J., Kimball, B.A., Wall, G.W., LaMorte, R.L., Hunsaker, D.J., Adamsen, F.J., Frumau, K.F.A., Vugts, H.F., Hendrey, G.R., Lewin, K.F., Nagy, J., Johnson, H.B., Wechsung, F., Leavitt, S.W., Thompson, T.L., Matthias, A.D., and Brooks, T.J., 2000.  Free-air CO2 enrichment (FACE): blower effects on wheat canopy microclimate and plant development.  Agriculture and Forest Meteorology 103: 319-333.

Sinclair, T.R., Pinter Jr., P.J., Kimball, B.A., Adamsen, F.J., LaMorte, R.L., Wall, G.W., Hunsaker, D.J., Adam, N., Brooks, T.J., Garcia, R.L., Thompson, T., Leavitt, S., Matthias, A., 2000.  Leaf nitrogen concentration of wheat subjected to elevated [CO2] and either water or N deficiencies.  Agriculture Ecosystems and Environment 79: 53-60.

Wall, G.W., Adam, N.R., Brooks, T.J., Kimball, B.A., Pinter, P.J. Jr., LaMorte, R.L., Adamsen, F.J., Hunsaker, D.J., Wechsung, G., Wechsung, F., Grossman-Clarke, S., Leavitt, S.W., Matthias, A.D., Webber, A.N. Acclimation response of spring wheat in a free-air CO2 enrichment (FACE) atmosphere with variable soil nitrogen regimes. 2. Net assimilation and stomatal conductance of leaves. Photosynthesis Research 66: 79-95.

Wechsung, F., Garcia, R.L., Wall, G.W., Kartschall, T., Kimball, B.A., Michaelis, P., Pinter Jr., P.J., Wechsung, G., Grossman-Clarke, S., LaMorte, R.L., Adamsen, F.J., Leavitt, S.W., Thompson, T.L., Matthias, A.D., and Brooks, T.J., 2000. Photosynthesis and conductance of spring wheat ears: field response to free-air CO2 enrichment and limitations in water and nitrogen supply.  Plant, Cell and Environment 23: 917-929.

 

2001

Cousins, A.B., Adam, N.R., Wall, G.W., Kimball, B.A., Pinter, P.J. Jr., Leavitt, S.W., LaMorte, R.L.,Matthias, A.D., Ottman, M.J., Thompson, T.L., and Webber, A.N., 2001.  Reduced photorespiration and increased energy-use efficiency in young CO2-enriched sorghum leaves. New Phytologist 150: 275-284.

Conley, M.M., Kimball, B.A., Brooks, T.J., Pinter, P.J., Hunsaker, D.J., Wall, G.W., Adam, N.R., LaMorte, R.L., Matthias, A.D., Thompson, T.L., Leavitt, S.W., Ottman, M.J., Cousins, A.B., and Triggs, J.M., 2001. CO2 enrichment increases water-use efficiency in sorghum. New Phytologist 151: 407-412.

Danzer, S.R., Leavitt, S.W., Panyushkina, I., Mergner, A., Garcia, E. and Best-Svob, V., 2001.  Xylem tracheid development in Pinus resinosa seedlings in controlled environments. Tree-Ring Research 57: 45-53.

Grant R.F., Kimball B.A., Brooks T.J., Wall G.W., Pinter P.J. Jr., Hunsaker D.J., Adamsen F.J., Lamorte R.L., Leavitt S.W., Thompson T.L., and Matthias A.D., 2001. Modeling interactions among carbon dioxide, nitrogen, and climate on energy exchange of wheat in a free air carbon dioxide experiment.  Agronomy Journal 93(3): 638-649.

Hemming, D., Fritts, H., Leavitt, S.W., Wright, W., Long, A., Shashkin, A., 2001.  Modelling tree-ring d13C.  Dendrochronologia 19(1): 23-38.

Hemming, D., Jalkanen, R. and Leavitt, S.W., 2001.  Preliminary relationships between climate and the apical extension, needle production and ring width of Pinus ponderosa in Arizona, USA. The Palaeobotanist 50(1): 125-131.

Kimball, B.A., Morris, C.F., Pinter, P.J. Jr., Wall, G.W., Hunsaker, D.J., Adamsen, F.J., LaMorte, R.L., Leavitt, S.W., Thompson, T.L., Matthias, A.D., and Brooks, T.J., 2001.  Elevated CO2, drought and soil nitrogen effects on wheat grain quality. New Phytologist 150: 295-303.

Leavitt, S.W., 2001.  Seasonal response of d13C in Pinus resinosa Ait. seedling growth rings to changing environment in controlled growth experiments.  Dendrochronologia 19(1): 9-22.

Leavitt, S.W. and Baisan, C.H., 2001.  Variability of seasonal d13C patterns in Apache pine from southern Arizona, USA.  The Palaeobotanist 50(1): 117-123.

Leavitt, S.W., Pendall, E., Paul, E.A., Brooks, T., Kimball, B.A., Pinter, P.J. Jr., Johnson, H.B., Matthias, A., Wall, G.W., and LaMorte, R.L., 2001.  Stable-carbon isotopes and soil organic carbon in wheat under CO2 enrichment.  New Phytologist 150: 305-314.

Leavitt, S.W., Wright, W.E., Long, A. and Fritts, H., 2001.  A century-length tree-ring d13C chronology from southeastern Arizona.  Proceedings of 17th Annual Pacific Climate (PACLIM) Workshop, 22-25 May 2000, Two Harbors, Santa Catalina Island. Eds. West, G.J. and Buffaloe, L.D., Technical Report #67 of the Interagency Ecological Program for the San Francisco Estuary, pp. 11-18, March 2001.

Liu, Y., Ma, L., Hughes, M.K., Garfin-Woll, G.M., Cai, Q., An, Z., and Leavitt, S.W., 2001.  Seasonal temperature reconstruction from central China based on tree ring data.  The Palaeobotanist 50(1): 89-94.

Matthias, A.D., Leavitt, S.W., Thompson, T.L., Kimball, B.A., Pinter Jr., P.J., Wall, G.W., Rauschkolb, R.S., Ottman, R.L., Roth, R.L., Brooks, T.J., Adam, N.R., LaMorte, R.L., Wechsung, G., Wechsung, F., Adamsen, F.J., Williams, D.G., Nakayama, F.S., Hunsaker, D.J., Watson, J., White, S.A., and Welzmiller, J., 2001.  Free-air CO2 enrichment effects on wheat and sorghum at Maricopa, Arizona, USA.  In Carbon Dioxide and Vegetation: Advanced International Approaches for Absorption of CO2 and Responses to CO2.  National Institute for Environmental Studies, Tsukuba, Ibaraki, Japan. March 18, 1999, pp. 87-96.

Paul, E.A., Collins, H.P. and Leavitt, S.W., 2001.  Dynamics of resistant soil carbon of Midwestern agricultural soils measured by naturally occurring 14C abundance.  Geoderma 104: 239-256.

Pendall, E., Leavitt, S.W., Brooks, T., Kimball, B.A., Pinter, P.J. Jr., Wall, G.W., LaMorte, R.L., Wechsung, G., Wechsung, F., Adamsen, F., Matthias, A.D., Thompson, T.L., 2001.  Elevated CO2 stimulates soil respiration in a FACE wheat field.  Basic and Applied Ecology 2: 193-201.

Ottman, M.J., Kimball, B.A., Pinter, P.J. Jr., Wall, G.W., Vanderlip, R.L., Leavitt, S.W., LaMorte, R.L., Matthias, A.D., and Brooks, T.J., 2001.  Elevated increases sorghum biomass under drought conditions. New Phytologist 150: 261-273.

Rillig M.C., Wright S.F., Kimball B.A., Pinter P.J. Jr., Wall G.W., Ottman M.J., Leavitt S.W., 2001.  Elevated carbon dioxid