W. John Calder
2017 - Present
Postdoctoral Research Associate
Department of Botany
University of Wyoming
2016 Ph.D., Ecology, University of Wyoming, Department of Geology and Geophysics. Dissertation: “Paleo-wildfires in subalpine forest: the influence of climate, topography, and vegetation feedbacks”. Advisor: Dr. Bryan Shuman
2009 Sc.M., Wildlife and Wildlands Conservation, Brigham Young University, School of Plant and Wildlife Science. Thesis: “Ecophysiological mechanism underlying aspen to conifer succession”. Advisor: Dr. Sam St. Clair
2007 B.S., Integrated Studies, emphases in Earth Science and Philosophy, Utah Valley University.
2013 Edward S. Deevey award for best paleoecological student presentation at the Ecological Society of America annual meeting
Accepted. Calder, W.J., Shuman, B.N., Detecting past changes in vegetation resilience in the context of a changing climate.
In press. Calder, W.J., Stefanova, I, Shuman, B.N., Climate-fire-vegetation interactions and the rise of novel landscape patterns in subalpine ecosystems, Colorado. Journal of Ecology. DOI: 10.1111/1365‐2745.13138
2017 Calder, W.J., Shuman, B.N., Extensive wildfires, climate change, and an abrupt state change in subalpine ribbon forests, Colorado. Ecology. DOI: 10.1002/ecy.1959
2015 Calder, W.J., Parker, D., Stopka, C., Gonzalo-Jiménez, M., Shuman, B.N., Medieval warming initiated exceptionally large wildfire outbreaks in the Rocky Mountains. Proceedings of the National Academy of Sciences of the United States of America 112(43), 13261-13266.
2013 Calder, W.J., Stopka, C., Shuman, B.N., High-elevation fire regimes during the Little Ice Age and Medieval Period along Continental Divide, Colorado, USA. Rocky Mountain Geology 49(1), 75-90.
2012 Calder, W.J., St. Clair, S.B., Facilitation drives mortality patterns along successional gradients of aspen-conifer forests. Ecosphere 3(6), 1-11.
2011 Calder, W.J., Horns, K., St. Clair, S.B., Conifer expansion reduces the competitive ability and herbivore defense of aspen by modifying light environment and soil chemistry. Tree Physiology 31(6), 582-591.
2010 Calder, W.J., St. Clair, S.B., Physiological effects of smoke exposure on deciduous and conifer tree species. International Journal of Forestry Research 2010, 1-7.
2009 St. Clair, S.B., Monson, S.D., Smith, E.A., Cahill, G.D., Calder, W.J., Altered leaf morphology, leaf resource dilution and defense chemistry induction in frost defoliated aspen (Populus tremuloides). Tree Physiology 29(10), 1259-1268.
2005 Calder, W. J., Klauzer, K., Cadet, E., Callison, J., Horns, D., Water Quality, In D. Horns (Ed.), Utah Lake Comprehensive Management Plan, Resource Document: Written for the Utah Division of Fire, Forestry, and Public Lands.
SELECTED PRESENTATIONS AND POSTERS
2015 W. John Calder and Bryan N. Shuman. “How much space and time is needed to understand fire regimes: Using 12 lake sediment charcoal records to understand landscape scale wildfire controls and ecosystem responses across centuries and millennia”. 100th Ecological Society of America Annual Meeting.
2013 W. John Calder and Bryan N. Shuman. “The climatic control of wildfire across the Park Range of northern Colorado”. University of Utah, Department of Geography weekly seminar invited speaker.
2014 W. John Calder, and Bryan N. Shuman. “Abrupt state change in spatially-patterned subalpine forests in northern Colorado during the Medieval Climate Anomaly”. American Geophysical Union Fall Meeting.
2014 W. John Calder, and Bryan N. Shuman. “Alternate stable states in spatially-patterned subalpine forests in northern Colorado during the past two millenia”. The 23rd American Quaternary Association Biennial Meeting.
2013 W. John Calder, Dusty Parker, Cody Stopka and Bryan N. Shuman. “The influence of spatial scale on detecting climatic controls of wildfire for the last 2000 years in northern Colorado”. 98th Ecological Society of America Annual Meeting.
2012 W. John Calder, Cody Stopka, Bryan Shuman. “Regime shifts in a spatially-patterned ecosystem in northern Colorado during the past 3000 years”. American Quaternary Association 22nd Biennial Meeting.
2011 W. John Calder, April Rog, Aaron Knoll and Bryan N. Shuman. “The role of fire in the vegetation response to Little Ice Age climate change in the Big Woods of Minnesota”. 96th Ecological Society of America Annual Meeting.
2009 W. John Calder, Sam St. Clair. “Facilitation of subalpine fir and aspen regeneration by overstory aspen”. 7th North American Forest Ecology Workshop.
2008 W. John Calder, Eric Smith, and Sam St. Clair. “Facilitation of subalpine fir and aspen regeneration by overstory aspen”. 93rd Ecological Society of America Annual Meeting.
2007 W. John Calder, and William Dinklage. “Titanium in biotite geothermometry of metamorphosed layers in the Pequop mountains”. 2007 National Conference on Undergraduate Research.
10 Undergraduate Advisees (* 4 co-authored on related publication or presentation; † 6 continued education in graduate and professional school)
Software/Statistics: extensive programming and statistical analyses, cartography, and spatial analyses in R, charcoal analysis with CharAnalysis, and editing in Adobe Illustrator
Field/laboratory: Lake sediment coring and sediment analyses, charcoal analysis, palynology, and vegetation sampling
2014 I took children from a woman’s shelter into the foothills each week to teach them about the geology and ecology of the Wasatch Mountains with Christy Bills from the Natural History Museum of Utah.
American Association of Geographers, American Geophysical Union, American Quaternary Association, and Ecological Society of America
2017 Instructor of record for General Ecology at the University of Wyoming
2015-2016 Expanded Graduate Assistantship. I co-taught and developed lectures for General Ecology
2009-2010 Adjunct Earth Science Instructor. I taught Introduction to Geology lecture and lab sections at Utah Valley University.