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John D Marshall

Trees and forests are like icebergs, where the part you can see is far less than the sum of everything that's going on. And as with an iceberg, the part you can't see can be important. I work with measurements of processes that are largely invisible, like photosynthesis and transpiration, but can be measured and can tell us important things about a forest will respond to something like fertilization or climate change. The tools we use measure these invisible processes and help us to build budgets for carbon and water, which allow us to explain and predict forest responses to change.


B.S. Forestry, Michigan State University, 1978

M.S. Forest Soils, Michigan State University, 1980

Ph.D. Forest Science, Oregon State University, 1984

Post-doc Ecophysiology, University of Utah, 1988-1990

Professor, Tree Physiology, University of Idaho, 1990-2012

Selected publications

103. Du, E., Link, T.E., Wei, L., Marshall, J.D., 2016. Evaluating hydrologic effects of spatial and temporal patterns of forest canopy change using numerical modelling. Hydrol. Process. 30:217-231.


104. Henriksson, N., Tarvainen, L., Lim, H., Tor-Ngern, P., Palmroth, S., Oren, R., Marshall, J., Näsholm, T., 2015. Stem compression reversibly reduces phloem transport in Pinus sylvestris trees. Tree Physiol. 35:1075-1085.


105. Hasselquist, N.J., Metcalfe, D.B., Marshall, J.D., Lucas, R.W., Högberg, P. 2016. Seasonality and nitrogen supply modify carbon partitioning in understory vegetation of a boreal coniferous forest. Ecology 97:671-683.


106. Voelker, S.; Brooks, R.; Meinzer, F.; Anderson, R.; Bader, M.; Battipaglia, G.; Becklin, K.; Beerling, D.; Bert, D.; Betancourt, J.; Dawson, T.E.; Domec, J.-C.; Guyette, R.; Koerner, C.; Leavitt, S.W.; Linder, S.; Marshall, J.D.; Mildner, M.; Ogée, J.; Panyushkina, I.; Plumpton, H.; Pregitzer, K.; Saurer, M.; Smith, A.; Siegwolf, R.; Stambaugh, M.; Talhelm, A.; Tardif, J.; Van de Water, P.; Ward, J.; Wingate, L.. 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 Biology 22:889-902.


107. Ehlers, I., Augusti, A., Betson, T., Nilsson, M.B., Marshall, J.D., Schleucher, J. 2016, Detecting long-term metabolic shifts using isotopomers: CO2-driven suppression of photorespiration in C3 plants over the 20th century. Proc. Nat. Acad. Sci. 112:15585–15590.


108. Pinto, J.R., Marshall, J.D., Dumroese, R.K., Davis, A.S., Cobos, D.R., 2016. Seedling establishment and physiological responses to temporal and spatial soil moisture changes. New For. 47, 223–241. doi:10.1007/s11056-015-9511-7.


109. Jocher, G., Ottosson Löfvenius, M., De Simon, G., Hörnlund, T., Linder, S., Lundmark, T., Marshall, J.D., Nilsson, M.B., Näsholm, T., Tarvainen, L., Öquist, M., and Peichl, M. . 2017. Apparent winter CO2 uptake by a boreal forest due to decoupling. Ag. For. Meteorol. 232:23-34.


110. Wei, L., Link, T.E., Hudak, A.T., Marshall, J.D., Kavanagh, K.L., Abatzoglou, J.T., Zhou, H., Pangle, R.E., and Flerchinger, G.N. 2016. Simulated water budget of a small forested watershed in the continental/maritime hydroclimatic region of the United States. Hydrol. Process. 30:2000-2013.


111. Tarvainen,, L., Wallin, G., Lim, H. Linder, S., Oren, R., Ottosson Löfvenius, M., Räntfors, M.,  Tor-ngern, P.,Marshall, J. In press. Photosynthetic refixation varies along the stem and reduces CO2 efflux in mature boreal Pinus sylvestris trees. Tree Physiology.