Dr. Thomas Pypker
Position: Dept. Chair, Associate Professor
Research InterestsMy work focuses on how disturbance affects biophysical processes of managed ecosystems at scales ranging from the leaf to whole watersheds. Nationally and internationally, my work focuses on how management and climate change affects biophysical processes in a variety of ecosystems that range from Canada's sub-boreal forests and grasslands, northern Michigan's wetlands, mountain ecosystems in Oregon, Washington and Colorado, to managed plantations in Brazil, Argentina, Mexico and Iran. I enjoy interdisciplinary work as my past research has covered the fields of Hydrology, Ecology, Micrometeorology, and Tree Physiology. My skill set is broadly applicable and I am excited to work in new ecosystems to tackle current environmental issues. Ultimately, the goal of my work is to provide insight into how management or climate change will affect the hydrology, stability and productivity of the Earth's ecosystems.
EducationPhD Oregon State University (2005)
MSc University of Northern BC (2001)
BSc (Hon.) McMaster University (1997)
PublicationsRecent Peer-Reviewed Publications (2018-2019)
Davis, JC, JP Shannon, MJ Van Grinsven, MW Bolton, JW Wagenbrenner, RK Kolka, TG Pypker (2019) Nitrogen cycling responses to simulated emerald ash borer infestation in Fraxinus nigra-dominated wetlands. Biogeochemistry 145: 275-294.
Dezhaban, A, P Attarod, G Zahedi Amiri, TG Pypker, K Nanko (2019) Spatial and temporal variability of throughfall under a natural Fagus orientalis stand in the Hyrcanian Forests, north of Iran. Journal of Agricultural Science and Technology 21: 1843-1858.
Attarod, P, P Abbasian, TG Pypker, MT Ahmadi, GZ Amiri (2019) Replacing an oriental beech forest with a spruce plantation impacts nutrient concentrations in throughfall, stemflow, and soil organic layers. Forest Systems 28(2), e010.
Peltola, O, T Vesala, Y Gao, O Raty, P Alekseychik, M Aurela, B Chojniki, A Desai, AJ Dolman, ES Euskirchen, T Friborg, M Gockede, M Helbig, E Humphreys, RB Jackson, G Jocher, F Joos, J Klatt, S H Knox, L Kutzback, S Lienert, A Lohila, I Mammerella, DF Nadeau, MB Nilsson, WC Oechel, M Peichl, T Pypker, W Quinton, J Rinne, T Sachs, M Samson, HP Schmid, O Sonnentag, C Wille, D Zona, T Aalto (2019) Monthly gridded data product of Northern wetland methane emissions based on upscaling eddy covariance observations. Earth System Science Data 11, 1263-1289.
Habashi, H, M Mosleshi, E Shabani, T Pypker, R Rahmani (2019) Chemical content and seasonal variation of throughfall and litterflow under individual trees in the Hyrcanian forests of Iran. Journal of Sustainable Forestry 38:2 183-197.
Gutierrez-Lopez, J, J Licata, T Pypker, H Asbjornsen (2019) Effects of heater wattage on sap flux density estimates using an improved tree-cut experiment. Tree Physiology 39, 679-693.
Noh, NJ, JP Shannon, NW Bolton, JC Davis, MJ Van Grinsven, T Pypker, RK Kolka, JW Wagenbrenner (2019) Temperature responses of carbon dioxide fluxes from coarse dead woods in a black ash wetland. Wetland Ecology and Management, 27: 157-170.
Khosropour, E, P Attarod, A Shirvani, TG Pypker, V Bayramzadeh, L Hakimi Mazaher Moeinaddini (2019) Response of Platanus orientalis leaves to urban pollution by heavy metals. Journal of Forestry Research 30: 1437-1445
Brum, M, JG Lopez, H Asbjornsen, J Licata, T Pypker, G Sanchez, RS Oiveira (2018) ENSO effects on transpiration of eastern Amazon trees. Philosophical Transactions of the Royal Society B. 373: 20180085 http://dx.doi.org/10.1098/rstb.2018.0085.
Van Grinsven, M, J Shannon, N Bolton, J Davis, NJ Noh, J Wagenbrenner, R Kolka, T Pypker (2018) Response of black ash wetland gaseous soil carbon fluxes to simulated emerald ash borer disturbance. Forests, 9, 324;doi:10.3390/f9060324.
Kolka, R, A D'Amato, J Wagenbrenner, R Slesak, T Pypker, M Youngquist, A Grinde, B Palik (2018) Synthesis of ecosystem level impacts of emerald ash borer on black as wetlands: What does the future hold? Forests 9, 179,doi:10.3390/f9040179.
Bolton, N, J Shannon, J Davis, M Van Grinsven, NJ Noh, S Schooler, R Kolka, T Pypker, J Wagenbrenner (2018) Methods to improve survival and growth of planted alternative species seedlings in black ash ecosystems threatened by emerald ash borer. Forests 9, 146;doi:10.3390/f9030146.
Shannon, J, M Van Grinsven, J Davis, N Bolton, NJ Noh, T Pypker, R Kolka (2018) Water level controls on sap flux of canopy species in black ash wetlands. Forests 9, 147;doi:10.3390/f9030147.
Hakimi, L, SMM Sadeghi, JT Van Stan, TG Pypker, E Khosrpour (2018) Management of pomegranate (Punica granatum) orchards alters the supply and pathway of rain water reaching soils in an arid agricultural landscape. Agriculture, Ecosystems & Environment 259, 77-85.
Sadeghi, SMM, JT Van Stan, TG Pypker, J Tamjidi, J Friesen, M Farahnaklagroudi (2018) Importance of transitional leaf states in canopy rainfall partitioning dynamics. European J. For. Res. 137, 121-130.
Employment HistoryThompson Rivers University, Department of Natural Resource Sciences
Associate Professor July 2017 to Present
Assistant Professor June 2013 to June 2017
University of Northern BC
Adjunct Professor Sept 2014 to present
Michigan Technological University
Adjunct Professor School of Forest Resources and Environmental Science June 2013 to present
Assistant Professor School of Forest Resources and Environmental Science Feb 2007 to June 2013
Oregon State University
Research Associate (Post-Doc) College of Oceanic and Atmospheric Science Feb 2005 to Jan 2007
Courses TaughtThompson Rivers University
Introduction to Soils (NRSC 2000), 2013, 2016 to present
Watershed Management (NRSC 4110), 2014 to present
Introduction to Climate Change Science (NRSC 1500), 2014 to present
Graduating Essay (NRSC 4230), 2015 to 2016
Dendrology 1 (NRSC 1120), 2014 to 2015
Evolution and Ecology (ENVS 5020), 2014
Advanced Topics in Canopy Hydrology (GEOG 4480), 2014
Advanced Topics in Soils (NRSC 5480), 2013
Michigan Technological University
Advanced Topics in Climate Change (FW5240), 2011 to 2013
Ecohydrology (FW 5230), 2011 to 2013
Forest and Landscape Hydrology (FW 4370), 2008 to 2013
Biometeorology (FW 5210), 2009 to present
Fieldwork in International Forestry (FW5730), 2010 to 2013
Graduate Teaching (FW 6980), 2012 to 2013
Integrated Resource Assessment (FW4810), 2012
Measurement Techniques in Atmospheric Science (FW 5510), 2010
Doctoral Graduate Seminar (FW 6800), 2008 to 2010
Master's Graduate Seminar (FW 5800), 2008 to 2010
Methods in Research (FW 5510), 2009
Climate Change and Water Resources (UN 5590), 2009
IPCC 2007: Global Climate Change (FW 5510), 2008
Dataloggers (FW 5510), SFRES, 2008
Environmental Biophysics (FW 5510), 2008
Methods used to determine rainfall interception loss in forests (FW 5510), 2007