PUBLICATIONS
Mathias, J.M., R.B. Thomas. 2021. Global tree intrinsic water use efficiency is enhanced by increased atmospheric CO2 and modulated by climate and plant functional types. Proceedings of the National Academy of Sciences. DOI: 10.1073/pnas.2014286118.
Mathias, J.M. and Thomas, R.B. 2018. Disentangling the effects of acidic air pollution, atmospheric CO2, and climate change on recent growth of red spruce trees in the Central Appalachian Mountains. Global Change Biology. DOI: 10.1111/gcb.14273.
Smith, K.R., J.M. Mathias, B.E. McNeil, W.T. Peterjohn and R.B. Thomas. 2016. Site-level importance of broadleaf deciduous trees outweighs the legacy of high nitrogen (N) deposition on ecosystem N status of Central Appalachian red spruce forests. Plant and Soil. DOI:10.1007/s11104-016-2940-z.
Mathias, J.M., R.B. Thomas. 2021. Global tree intrinsic water use efficiency is enhanced by increased atmospheric CO2 and modulated by climate and plant functional types. Proceedings of the National Academy of Sciences. DOI: 10.1073/pnas.2014286118.
Mathias, J.M. and Thomas, R.B. 2018. Disentangling the effects of acidic air pollution, atmospheric CO2, and climate change on recent growth of red spruce trees in the Central Appalachian Mountains. Global Change Biology. DOI: 10.1111/gcb.14273.
Smith, K.R., J.M. Mathias, B.E. McNeil, W.T. Peterjohn and R.B. Thomas. 2016. Site-level importance of broadleaf deciduous trees outweighs the legacy of high nitrogen (N) deposition on ecosystem N status of Central Appalachian red spruce forests. Plant and Soil. DOI:10.1007/s11104-016-2940-z.
In Revision
Mathias, J.M. and A.T. Trugman. Climate change impacts plant carbon balance, increasing mean future carbon use efficiency but decreasing total forest extent at dry range edges.
Mathias, J.M. and A.T. Trugman. Climate change impacts plant carbon balance, increasing mean future carbon use efficiency but decreasing total forest extent at dry range edges.
In preparation
Mathias, J.M., K.R. Smith, K.T. Allen, M.M. Wright, K.E. Lantz, and R.B. Thomas. Air pollution and climate interact to influence the growth and intrinsic water use efficiency of Quercus rubra and Liriodendron tulipifera in the Central Appalachian Mountains.
Smith, K.R., J.M. Mathias, W.T. Peterjohn and R.B. Thomas. Annual soil respiration and below ground carbon flux in high-elevation red spruce forests are linked to broadleaf controls on forest nitrogen status.
Mathias, J.M., K.R. Smith, K.T. Allen, M.M. Wright, K.E. Lantz, and R.B. Thomas. Air pollution and climate interact to influence the growth and intrinsic water use efficiency of Quercus rubra and Liriodendron tulipifera in the Central Appalachian Mountains.
Smith, K.R., J.M. Mathias, W.T. Peterjohn and R.B. Thomas. Annual soil respiration and below ground carbon flux in high-elevation red spruce forests are linked to broadleaf controls on forest nitrogen status.
OPEN SOURCE SOFTWARE
Mathias, J.M. 2021. isocalcR: Isotope Calculations in R. R package version 0.0.1. https://CRAN.R-project.org/package=isocalcR
Mathias, J.M. 2021. isocalcR: Isotope Calculations in R. R package version 0.0.1. https://CRAN.R-project.org/package=isocalcR
INVITED PRESENTATIONS
Mathias, J.M. 2021. Forests in an era of global change: linking tree physiological processes to the environment through the 21st century. West Virginia University.
Mathias, J.M. and R.B. Thomas. 2021. Tree intrinsic water use efficiency during the twentieth century: from global trends to local drivers. Dendrochronology Intensive Summer Course, University of Arizona.
Mathias, J.M. and R.B. Thomas. 2021. Tree growth and water use efficiency during the twentieth century: from global trends to local drivers. University of Maryland Center for Environmental Science, Appalachian Laboratory.
Mathias, J.M. and R.B. Thomas. 2018. Using a multi-proxy tree ring approach to examine the effects of environmental change on eastern U.S. forests. USFS Forest Air Resource Management team.
Mathias, J.M. and R.B. Thomas. 2018. Red spruce recovery in the Central Appalachian Mountains. At: Central Appalachian Spruce Restoration Initiative’s Partnerships for Connectivity Conference. Canaan Valley Resort and Conference Center, Canaan, WV.
Mathias, J.M. and R.B. Thomas. 2018. Using a multi-proxy approach to explore recent growth increases in red spruce trees in the Central Appalachian Mountains. University of Virginia, Charlottesville, Virginia.
Mathias, J.M. and R.B. Thomas. 2015. Widespread forest recovery across the central Appalachian Mountains (U.S.) following reductions in pollutant emissions. Chinese Academy of Forestry, Beijing, China.
Mathias, J.M. 2021. Forests in an era of global change: linking tree physiological processes to the environment through the 21st century. West Virginia University.
Mathias, J.M. and R.B. Thomas. 2021. Tree intrinsic water use efficiency during the twentieth century: from global trends to local drivers. Dendrochronology Intensive Summer Course, University of Arizona.
Mathias, J.M. and R.B. Thomas. 2021. Tree growth and water use efficiency during the twentieth century: from global trends to local drivers. University of Maryland Center for Environmental Science, Appalachian Laboratory.
Mathias, J.M. and R.B. Thomas. 2018. Using a multi-proxy tree ring approach to examine the effects of environmental change on eastern U.S. forests. USFS Forest Air Resource Management team.
Mathias, J.M. and R.B. Thomas. 2018. Red spruce recovery in the Central Appalachian Mountains. At: Central Appalachian Spruce Restoration Initiative’s Partnerships for Connectivity Conference. Canaan Valley Resort and Conference Center, Canaan, WV.
Mathias, J.M. and R.B. Thomas. 2018. Using a multi-proxy approach to explore recent growth increases in red spruce trees in the Central Appalachian Mountains. University of Virginia, Charlottesville, Virginia.
Mathias, J.M. and R.B. Thomas. 2015. Widespread forest recovery across the central Appalachian Mountains (U.S.) following reductions in pollutant emissions. Chinese Academy of Forestry, Beijing, China.
CONTRIBUTED PRESENTATIONS
Mathias, J.M. and A.T. Trugman. 2021. Climate change impacts plant carbon balance, increasing mean future carbon use efficiency but decreasing total forest extent at dry range edges. Ecological Society of America Annual Meeting. Long Beach, CA.
Mathias, J.M. and R.B. Thomas. 2020. A global meta-analysis of historical changes in intrinsic water use efficiency of trees using the the dual isotope method. Ecological Society of America Annual Meeting. Salt Lake City, UT.
Mathias, J.M. K.R. Smith, and R.B. Thomas. 2019. Contrasting trends in growth and intrinsic water use efficiency of four eastern U.S. tree species. Ecological Society of America Annual Meeting. Louisville, KY.
Mathias, J.M. and R.B. Thomas. 2019. Using a multiproxy tree ring approach to examine the effects of environmental change on eastern U.S. forests. European Geosciences Union Annual Meeting. Vienna, Austria.
Mathias, J.M. and R.B. Thomas. 2018. Using a multiproxy tree ring approach to examine the effects of environmental change on eastern U.S. forests. American Geophysical Union Annual Meeting. Washington D.C.
Mathias, J.M. and R.B. Thomas. 2018. Using multiple proxies of ecosystem function to assess long-term growth and physiology of two deciduous tree species in the Fernow Experimental Forest, WV. Ecological Society of America Annual Meeting. New Orleans, LA.
Thomas, R.B. and J.M. Mathias. 2018. Tracing historical stomatal conductance using stable isotopes. At: Dynamics of Forest Growth and Resource Use Symposium. Charlottesville, VA.
J.M. Mathias and R.B. Thomas. 2017. Stable nitrogen isotopes in tree rings are an integrator of historical changes in nitrogen cycling dynamics in red spruce (Picea rubens Sarg.) forests in West Virginia. Ecological Society of America Annual Meeting. Portland, OR.
Thomas, R.B. and J.M. Mathias. 2015. Widespread forest recovery across the central Appalachian Mountains (U.S.) following reductions in pollutant emissions. International Acid Rain Conference, October 19-23, 2015 in Rochester, NY.
Thomas, R.B. and J.M. Mathias. 2015. A new story from old trees: possible causes of a recent anomaly in tree growth in the Central Appalachian Mountains (USA). Forest Ecosystem Services for Biodiversity and the Bioeconomy. September 14-20, 2015 in Beijing, China.
Mathias, J.M., L.A. Scholtz, B.T. Russell, and R.B. Thomas. 2015. Using tree rings of red spruce in the Central Appalachian Mountains to explore growth trends before and after the Clean Air Act. Ecological Society of America Annual Meeting. Baltimore, MD.
Smith, K.R., J.M. Mathias, B. Hedin, W.T. Peterjohn, and R.B. Thomas. 2014. Interannual variability of soil respiration is linked to soil N availability in high-elevation red spruce (Picea rubens) forests in Central Appalachia. Ecological Society of America Annual Meeting. Sacramento, CA.
Walton, D.R., P.M. Crim, L.A. Scholtz, J.M. Mathias, K.R. Smith and R.B. Thomas. 2013. Historical trends in stomatal function using herbarium specimens. Summer Undergraduate Research Symposium 2013. Morgantown, WV.
Mathias, J.M., K.R. Smith, B. McNeil, W.T. Peterjohn, and R.B. Thomas. 2013. Do increased N inputs influence rates of soil N cycling in high-elevation red spruce (Picea rubens Sarg.) forests along a gradient of atmospheric deposition? Ecological Society of America Annual Meeting. Minneapolis, MN.
Smith, K.R., J.M. Mathias, B. McNeil, W.T. Peterjohn, and R.B. Thomas. 2013. Who is behind the wheel? The drivers of soil N availability in high-elevation red spruce (Picea rubens Sarg.) forests along a gradient of atmospheric N deposition. Ecological Society of America Annual Meeting. Minneapolis, MN.
Mathias, J.M., K.R. Smith, and R.B. Thomas. 2012. Nitrogen cycling in high elevation red spruce forests along an atmospheric deposition gradient. WVU Summer Undergraduate Research Symposium 2012. Morgantown, WV.
Mathias, J.M. and A.T. Trugman. 2021. Climate change impacts plant carbon balance, increasing mean future carbon use efficiency but decreasing total forest extent at dry range edges. Ecological Society of America Annual Meeting. Long Beach, CA.
Mathias, J.M. and R.B. Thomas. 2020. A global meta-analysis of historical changes in intrinsic water use efficiency of trees using the the dual isotope method. Ecological Society of America Annual Meeting. Salt Lake City, UT.
Mathias, J.M. K.R. Smith, and R.B. Thomas. 2019. Contrasting trends in growth and intrinsic water use efficiency of four eastern U.S. tree species. Ecological Society of America Annual Meeting. Louisville, KY.
Mathias, J.M. and R.B. Thomas. 2019. Using a multiproxy tree ring approach to examine the effects of environmental change on eastern U.S. forests. European Geosciences Union Annual Meeting. Vienna, Austria.
Mathias, J.M. and R.B. Thomas. 2018. Using a multiproxy tree ring approach to examine the effects of environmental change on eastern U.S. forests. American Geophysical Union Annual Meeting. Washington D.C.
Mathias, J.M. and R.B. Thomas. 2018. Using multiple proxies of ecosystem function to assess long-term growth and physiology of two deciduous tree species in the Fernow Experimental Forest, WV. Ecological Society of America Annual Meeting. New Orleans, LA.
Thomas, R.B. and J.M. Mathias. 2018. Tracing historical stomatal conductance using stable isotopes. At: Dynamics of Forest Growth and Resource Use Symposium. Charlottesville, VA.
J.M. Mathias and R.B. Thomas. 2017. Stable nitrogen isotopes in tree rings are an integrator of historical changes in nitrogen cycling dynamics in red spruce (Picea rubens Sarg.) forests in West Virginia. Ecological Society of America Annual Meeting. Portland, OR.
Thomas, R.B. and J.M. Mathias. 2015. Widespread forest recovery across the central Appalachian Mountains (U.S.) following reductions in pollutant emissions. International Acid Rain Conference, October 19-23, 2015 in Rochester, NY.
Thomas, R.B. and J.M. Mathias. 2015. A new story from old trees: possible causes of a recent anomaly in tree growth in the Central Appalachian Mountains (USA). Forest Ecosystem Services for Biodiversity and the Bioeconomy. September 14-20, 2015 in Beijing, China.
Mathias, J.M., L.A. Scholtz, B.T. Russell, and R.B. Thomas. 2015. Using tree rings of red spruce in the Central Appalachian Mountains to explore growth trends before and after the Clean Air Act. Ecological Society of America Annual Meeting. Baltimore, MD.
Smith, K.R., J.M. Mathias, B. Hedin, W.T. Peterjohn, and R.B. Thomas. 2014. Interannual variability of soil respiration is linked to soil N availability in high-elevation red spruce (Picea rubens) forests in Central Appalachia. Ecological Society of America Annual Meeting. Sacramento, CA.
Walton, D.R., P.M. Crim, L.A. Scholtz, J.M. Mathias, K.R. Smith and R.B. Thomas. 2013. Historical trends in stomatal function using herbarium specimens. Summer Undergraduate Research Symposium 2013. Morgantown, WV.
Mathias, J.M., K.R. Smith, B. McNeil, W.T. Peterjohn, and R.B. Thomas. 2013. Do increased N inputs influence rates of soil N cycling in high-elevation red spruce (Picea rubens Sarg.) forests along a gradient of atmospheric deposition? Ecological Society of America Annual Meeting. Minneapolis, MN.
Smith, K.R., J.M. Mathias, B. McNeil, W.T. Peterjohn, and R.B. Thomas. 2013. Who is behind the wheel? The drivers of soil N availability in high-elevation red spruce (Picea rubens Sarg.) forests along a gradient of atmospheric N deposition. Ecological Society of America Annual Meeting. Minneapolis, MN.
Mathias, J.M., K.R. Smith, and R.B. Thomas. 2012. Nitrogen cycling in high elevation red spruce forests along an atmospheric deposition gradient. WVU Summer Undergraduate Research Symposium 2012. Morgantown, WV.
