吃瓜网

I am fascinated by how trees withstand environmental stress over centuries, or even millennia. In Canada’s forests, the stresses of low nutrient availability and winter cold are common, yet trees survive and thrive across much of our landscape. I study how trees take up and allocate nutrients, particularly nitrogen, often with the help of mycorrhizal partners; and how they alter their physiology to tolerate freezing temperatures. I am particularly interested in co-adaptation of conifers and their mycorrhizal partners, and in variation among tree populations in stress tolerance.

My work ranges from lab experiments using ion-selective microelectrodes to measure net flux of nutrient ions in mycorrhizal roots, to field work assessing nutrient stoichiometry of foliage, fungi and soil.

• BIOL 324 - Biology of Land and Plants
• BIOL 325 - Tree Biology
• BIOL 366 - Plant Physiology
• BIOL 418 - Forest Ecology

Vance, M., Hawkins, B.J,, von Aderkas, P. The range-wide genetic structure of a high elevation conifer species, subalpine larch. Jour. Biogeog. doi:10.1111/jbi.15002

Coleman, M.D.,… Hawkins, B.J. + 21 others. 2024. Status of truffle science and cultivation in North America. Plant and Soil. doi: 10.1007/s11104-024-06822-4

Westley, R., Ma, D., Hawkins, B.J., Constabel, C.P. 2024. Tissue and cellular localization of condensed tannins in poplar roots and potential association with nitrogen uptake, Front. Plant Sci. doi: 10.3389/fpls.2024.1388549

Aldana, J., Moa, B., Mattsson, J., Russell, J.H., Hawkins B.J. 2024. Histological, chemical and gene expression differences between western redcedar seedlings resistant and susceptible to cedar leaf blight. Plant Sci. doi: 10.3389/fpls.2024.1309762

McPolin, C., Kranabetter, J.M., Philpott, T., Hawkins, B.J. 2023 (online) 2024 (print). Sporocarp nutrition of ectomycorrhizal fungi indicates an important role for endemic species in a high productivity temperate rainforest. New Phytol, 242: 1603-1613. doi: 10.1111/nph.19280

Nehring, L., Kranabetter, J.M., Harper, G.J., Hawkins, B.J. 2023. Tree-ring δ¹⁵N as an indicator of nitrogen dynamics in stands with N₂-fixing Alnus rubra. Tree Physiol. doi.org/10.1093/treephys/tpad110

Aldana, J.A., Kope, H.H., Hawkins, B.J. 2023. Western redcedar - natural history and pathosystems, with emphasis on cedar leaf blight. Can. J. Plant Path. doi: 10.1080/07060661.2023.2198489

Kranabetter, J.M., Robbins, S., Hawkins, B.J. 2023. Host population effects on ectomycorrhizal fungi vary between low and high phosphorus soils of temperate rainforests. Mycorrhiza. doi: 10.1007/s00572-023-01109-5

Hawkins, B.J., Robbins, S. 2022. Comparison of ammonium, nitrate and proton fluxes in mycorrhizal and non-mycorrhizal roots of lodgepole pine in contrasting nitrogen treatments. Can. J. For. Res. doi: 10.1139/cjfr-2022-0066

Gourlay, G., Hawkins, B.J., Albert, A., Schnitzler, J-P., Constabel, C.P. 2021. Condensed tannins as antioxidants that protect poplar against oxidative stress from drought and UV‐B. Plant, Cell & Envir. 45. doi: 10.1111/pce.14242.

Boateng, K., Hawkins. B.J., Yanchuk, A., Felleberg, C., Constabel, C.P. 2021. Factors affecting foliar oregonin and condensed tannin in Red Alder (Alnus rubra ): Phytochemicals implicated in defense against Western Tent Caterpillar (Malacosoma californicum Packard). J. Chem. Ecol. doi: 10.1007/s10886-021-01283-w

Kranabetter, J.M., McKeown, K., Hawkins, B.J. 2020. Post‐disturbance conifer tree‐ring δ¹⁵N reflects openness of the nitrogen cycle across temperate coastal rainforests. J. Ecol. doi: 10.1111/1365-2745.13482

Boateng, K., Hawkins, B.J., Constabel, C.P., Yanchuk, A.D., Fellenberg, C. 2020. Red alder defense mechanisms against western tent caterpillar defoliation. Can. J. For Res. doi: 10.1139/cjfr-2020-0343

Kranabetter, Marty, J., McKeown, K., Hawkins, B.J., 2020. Post-disturbance conifer tree-ring delta N-15 reflects openness of the nitrogen cycle across temperate coastal rainforests. Journal of Ecology 109-1: 342-353

Lerstrup-Pedersen, E., Pedersen, O., De Luca, S., Hawkins, B.J. 2019. Implications of an exceptional autumn bud flush on subsequent cold tolerance of Garry oak (Quercus garryana Douglas ex Hook). Can. J. For. Res. 49:942-948

Hawkins, B.J. 2018. A Tribute: Robert John van den Driessche, Tree Physiologist, 1933-2018. Can. J. For. Res. 48:v -vii. doi: 10.1139/cjfr-2018-0351

Kranabetter, JM, Harman-Denhoed, R and Hawkins, BJ. (2018)  New Phytologist. dos: 10.1111/nph.15380. 11 p

Hawkins BJ, May E, Robbins S (2018)  Botany doi: 10.1139/cjb-2017-0154

Hawkins BJ, Kranabetter M (2017)  Botany 95(10): 963-969

Kranabetter J, Hawkins BJ, Jones M, Robbins S, Dyer T, Li T. (2015)  Molec. Ecol. doi: 10.1111/mec.13435

Hawkins BJ, Jones MD, Kranabetter JM. (2015)   New Forests DOI 10.1007/s11056-015-9488-2

Boczulak S, Roy R, Maynard D, Hawkins BJ. (2015).  Can. J. Soil Sci. 95: 77-86.

von Wittgenstein NJJB, Cuong HL, Hawkins BJ, Ehlting J. (2014)  BMC Evol. Biol. 14: 11. doi:10.1186/1471-2148-14-11