Jardine, Tim

Associate Professor

Tim Jardine

Toxicology Centre
Room 215
University of Saskatchewan
Saskatoon, Saskatchewan, Canada
S7N 5B3

Phone: 306-966-4158

Email: tim.jardine@usask.ca

Academic Degrees

  • PhD (Biology), University of New Brunswick, Saint John, NB, Canada (2009)
  • MSc (Biology), University of New Brunswick, Saint John, NB, Canada (2003)
  • BSc (Biology), Dalhousie University, Halifax, NS, Canada (2000)

Current and Recent Research Projects

  • Comparisons of contaminant biomagnification rates through aquatic food webs at local and global scales
  • Investigations of hydrological and food-web connectivity between rivers and floodplains in Australia's wet-dry tropics
  • Developing environmental research and monitoring programs for northern river communities
  • Creation of new models for the ecological and biogeochemical implications of flood regimes in large rivers


Adame, M.F., Jardine, T., Fry, B., Valdez, D., Lindner, G., Nadji, J., and Bunn, S.E. 2018. Estuarine crocodiles in a tropical coastal floodplain obtain nutrition from terrestrial prey. PLoS One 13: e0197159.

Andrews, E.J., Reed, M.G., Jardine, T.D., and Steelman, T.A. 2018. Damming knowledge flows: Power as a constraint on knowledge pluralism in river flow decision-making in the Saskatchewan River Delta. Society and Natural Resources 31: 892-907.

Silverthorn, V.M., Bishop, C.A., Jardine, T., Elliott, J.E., and Morrissey, C.A. 2018. Impact of flow diversion by run-of-river dams on American dipper diet and mercury exposure. Environmental Toxicology and Chemistry 37: 411-426.

Hassanzadeh, E., Elshorbagy, A., Nazemi, A., Jardine, T.D., Wheater, H., and Lindenschmidt, K.-E. 2017. The eco-hydrological vulnerability of a large inland delta to changing regional streamflows and upstream irrigation expansion. Ecohydrology 10: e1824.

Villamarin, F., Jardine, T.D., Bunn, S.E., Marioni, B., and Magnusson, W.E. 2018. Body size is more important than diet in determining trophic position of crocodilians. Scientific Reports 8: 2020. DOI:10.1038/s41598-018-19918-6. 

Baldwin, C., Bradford, L., Carr, M., Doig, L., Jardine, T., Jones, P., Bharadwaj, L., and Lindenschmidt, K.-E. 2018. Ecological patterns of fish distribution in the Slave River Delta region, Northwest Territories, Canada, as relayed by Traditional Knowledge and Western Science. International Journal of Water Resources Development 34: 305-324.

Doig, L.E., Carr, M.K., Meissner, A.G.N., Jardine, T.D., Jones, P.D., Bharadwaj, L., and Lindenschmidt, K.-E. 2017. Open-water and under-ice seasonal variations in trace element content and physicochemical associations in fluvial bed sediment. Environmental Toxicology and Chemistry 36: 2916-2924.

Villamarin, F., Jardine, T.D., Bunn, S.E., Marioni, B., and Magnusson, W.E. 2017. Opportunistic top predators partition resources in a tropical aquatic ecosystem. Freshwater Biology 62: 1389-1400. 

Asante, C.K., Jardine, T.D., Van Wilgenburg, S.L., and Hobson, K.A. 2017. Tracing origins of waterfowl using the Saskatchewan River Delta: Incorporating stable isotope approaches in continent-wide waterfowl management and conservation. The Condor 119: 261-274.

Pettit, N.E., Naiman, R.J., Warfe, D.M., Jardine, T.D., Douglas, M.M., Bunn, S.E., and Davies, P.M. 2017. Productivity and connectivity in tropical riverscapes of northern Australia: Ecological insights for management. Ecosystems 20: 492-514.

Asante, C.K., Hobson, K.A., Bond, A.L., and Jardine, T.D. 2017. Resource partitioning among five species of waterfowl at an autumn migratory stopover: Combining stable isotope and mercury biomarkers. Canadian Journal of Zoology 95: 279-286.

Mantyka-Pringle, C.S., Jardine, T.D., Bradford, L.E., Bharadwaj, L., Kythreotis, A.P., Fresque-Baxter, J., Kelly, E., Somers, G., Lindenschmidt, K.-E., Doig, L.E., Jones, P.D., and the Slave River and Delta Partnership. 2017. Bridging science and traditional knowledge to assess cumulative impacts of stressors on aquatic ecosystems. Environment International 102: 125-137.

Carr, M.K., Jardine, T.D., Doig, L.E., Jones, P.D., Bharadwaj, L., Tendler, B., Chetelat, J., Cott, P., and Lindenschmidt, K.-E. 2017. Stable sulfur isotopes identify habitat-specific foraging and mercury exposure in a highly mobile fish community. Science of the Total Environment 586: 338-346.

Jardine, T.D., Rayner, T.S., Pettit, N.E., Valdez, D., Ward, D.P., Lindner, G., Douglas, M.M., and Bunn, S.E. 2017. Body size drives allochthony in food webs of tropical rivers. Oecologia 183: 505-517.   

Bond, A.L., Jardine, T.D., and Hobson, K.A. 2016. Multi-tissue stable-isotope analyses can identify dietary specialization. Methods in Ecology and Evolution 7: 1428-1437.

Painter, K.J., Janz, D.M., and Jardine, T.D. 2016. Bioaccumulation of mercury in invertebrate food webs of Rocky Mountain streams. Freshwater Science 35: 1248-1262.

Green, D.J., Duffy, M., Janz, D.M., McCullum, K., Carriere, G., and Jardine, T.D. 2016. Historical and contemporary patterns of mercury in a hydroelectric reservoir and downstream fishery: Concentration decline in water and fishes. Archives of Environmental Contamination and Toxicology 71: 157-170.

Jardine, T.D. 2016. A top predator forages low on species-rich tropical food chains. Freshwater Science 35: 666-675.

Walters, D.M., Jardine, T.D., Cade, B., Kidd, K.A., Muir, D.C.G., Leipzig-Scott, P. 2016. Trophic magnification of organic chemicals - a global synthesis. Environmental Science and Technology 50: 4650-4658.

Mont’Alverne, R., Jardine, T.D., Pereya, P.E.R., Oliveira, M.C.L.M., Medeiros, R.S., Sampaio, L.A., Tesser, M.B., and Garcia, A.M. 2016. Elemental turnover rates and isotopic discrimination in a euryhaline fish reared under different salinities: implications for movement studies. Journal of Experimental Marine Biology and Ecology 480: 36-44.

Villamarin, F., Magnusson, W.E., Jardine, T.D., Valdez, D., Woods, R., and Bunn, S.E. 2016. Temporal uncoupling between energy acquisition and allocation to reproduction of a herbivorous-detritivorous fish. PLoS One 11(3): e0150082.

MacKinnon, B.D., Sagin, J., Baulch, H.M, Lindenschmidt, K.-E., and Jardine, T.D. 2016. Influence of hydrological connectivity on winter limnology in floodplain lakes of the Saskatchewan River Delta, SK. Canadian Journal of Fisheries and Aquatic Sciences 73: 140-152.

Jardine, T.D., Woods, R., Marshall, J., Fawcett, J., Lobegeiger, J., Valdez, D., and Kainz, M.J. 2015. Reconciling the role of organic matter pathways in aquatic food webs by measuring multiple tracers in individuals. Ecology 96: 3257-3269.

Hayden, B., Soto, D.X., Jardine, T.D., Graham, B., Cunjak, R., Romakkaniemi, A., and Linnansaari, T. 2015. Small tails tell tall tales – intra-individual variation in the stable isotope ratios of fish fin. PLoS One 10: e0145154.

Painter, K.J., Westbrook, C.J., Hall, B.D., O’Driscoll, N.J., and Jardine, T.D. 2015. Effects of in-channel beaver impoundments on mercury bioaccumulation in Rocky Mountain stream food webs. Ecosphere 6: 194. 

Jardine, T.D., Bond, N.R., Burford, M.A., Kennard, M.J., Ward, D.P., Bayliss, P., Davies, P.M., Douglas, M.M., Hamilton, S.K., Melack, J.M., Naiman, R.J., Pettit, N.E., Pusey, B.J., Warfe, D.M., and Bunn, S.E. 2015. Does flood rhythm drive ecosystem responses in tropical riverscapes?  Ecology 96: 684-692.

Hanson, J.O., Salisbury, S.W., Campbell, H.A., Dwyer, R.G., Jardine, T.D., and Franklin, C.E. 2015. Feeding across the food web: the interaction between diet, movement and body size in estuarine crocodiles (Crocodylus porosus). Austral Ecology 40: 275-286.

Jardine, T.D. 2014. Organic matter sources and size structuring in stream invertebrate food webs across a tropical to temperate gradient. Freshwater Biology 59: 1509-1521.

Blanchette, M.L., Davis, A.M., Jardine, T.D., and Pearson, R.G. 2014. Omnivory and opportunism characterize food webs in a large dry-tropics river system. Freshwater Science 33: 142-158.

Jardine, T.D., Hadwen, W.L., Hamilton, S.K., Hladyz, S., Mitrovic, S.M., Kidd, K.A., Tsoi, W.Y., Spears, M., Westhorpe, D.P., Fry, V.M., Sheldon, F., and Bunn, S.E. 2014. Understanding and overcoming baseline isotopic variability in running waters. River Research and Applications 30: 155-165.

Arciszewski, T.J., Farwell, A.J., Servos, M.R., Jardine, T.D., and Munkittrick, K.R. 2014. Differential recovery of d13C in multiple tissues of white sucker across age classes after the closure of a pulp mill. Canadian Journal of Fisheries and Aquatic Sciences 71: 747-755.

Lavoie, R.A., Jardine, T.D., Chumchal, M.M., Kidd, K.A., and Campbell, L.A. 2013. Biomagnification of mercury in aquatic food webs: a worldwide meta-analysis. Environmental Science and Technology 47: 13385-13394.

Jardine, T.D., Kidd, K.A., O’Driscoll, N. 2013. Food web analysis reveals effects of pH on mercury bioaccumulation at multiple trophic levels in streams.  Aquatic Toxicology 132-133: 46-52.

Warfe, D.M., Jardine, T.D., Pettit, N.E., Hamilton, S.K., Pusey, B.J., Bunn, S.E., Davies, P.M., and Douglas, M.M. 2013. Productivity, disturbance and ecosystem size have no influence on food chain length in seasonally connected rivers. PLoS One 8: e66240.

Jardine, T.D., Hunt, R.J., Faggotter, S.J., Valdez, D., Burford, M.A., and Bunn, S.E. 2013. Carbon from periphyton supports fish biomass in waterholes of a wet-dry tropical river. River Research and Applications 29: 560-573.

Ward, D.P., Hamilton, S.K., Jardine, T.D., Pettit, N.E., Tews, E.K., Olley, J.M., and Bunn, S.E. 2013. Assessing the seasonal dynamics of inundation, turbidity and aquatic vegetation in the Australian wet-dry tropics using optical remote sensing. Ecohydrology 6: 312-323.

Bunn, S.E., Leigh, C., and Jardine, T.D.  2013. Diet-tissue fractionation of 15N by consumers in streams and rivers.  Limnology and Oceanography 58: 765-773.