Picture of  Tim Jardine

Tim Jardine PhD Associate Professor, School of Environment and Sustainability

Member, Toxicology Centre

Toxicology Centre
On leave July 1, 2018 to June 30, 2019.

Research Area(s)

  • River deltas as complex social-ecological systems; contaminant biomagnification in aquatic ecosystems; land-water and river-ocean connectivity; tropical floodplain hydrology and ecology; freshwater food webs; applications of stable isotope analysis in ecology

Academic Credentials

  • Doctor of Philosophy in Biology, University of New Brunswick
  • Master of Science in Biology, University of New Brunswick
  • Honours Bachelor of Science in Biology, Dalhousie University

Research Profile

I am an applied aquatic ecologist who studies the biology of streams, rivers and wetlands.  I use a food-web approach to understand how energy and contaminants move through ecosystems from the bottom to the top of the food chain.  I often employ ecological tracers such as stable isotope ratios, and draw comparisons between unregulated, free-flowing rivers and those affected by dams and diversions.

Current Research

  • Understanding long-term changes in hydrology, ecology and community livelihoods in large river deltas – Saskatchewan River Delta (SK) and Slave River Delta (NWT)
  • Assessing mercury concentrations in fishes of commercial and cultural importance
  • Determining effects of hydropower dams and their natural analogues, beaver dams, on structure and function of river ecosystems
  • Evaluating key drivers of biomagnification of persistent organic pollutants in aquatic food webs
  • Investigating hydrological and food-web connectivity between rivers and floodplains in Australia’s wet-dry tropics
  • Creating new models for the ecological and biogeochemical implications of flood regimes in large rivers
E.B. Campbell Dam Research Site - Saskatchewan River Basin

News and Media

Selected Publications

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.  https://doi.org/10.1007/s10021-016-0037-4

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.  https://doi.org/10.1021/acs.est.6b00201

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.  https://doi.org/10.1139/cjfas-2015-0210

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.  https://doi.org/10.1890/14-2153.1

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.  https://doi.org/10.1890/14-0991.1

Sagin, J., Sizo, A., Wheater, H., Jardine, T.D., and Lindenschmidt, K.-E.  2015.  A water coverage extraction approach to track inundation in the Saskatchewan River Delta, Canada.  International Journal of Remote Sensing, 36: 764-781.  http://dx.doi.org/10.1080/01431161.2014.1001084

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.  https://doi.org/10.1021/es403103t

Jardine, T.D., Kidd, K.A., and Rasmussen, J.B.  2012.  Terrestrial organic matter in the diet of stream consumers: Implications for mercury exposure.  Ecological Applications, 22: 843-855.  https://doi.org/10.1890/11-0874.1 

Logan, J.M., Jardine, T.D., Miller, T.J., Bunn, S.E., Cunjak, R.A., and Lutcavage, M.E.  2008.  Lipid corrections in carbon and nitrogen stable isotope analyses: comparison of chemical extraction and modeling methods.  Journal of Animal Ecology, 77: 838-846.  https://doi.org/10.1111/j.1365-2656.2008.01394.x

Jardine, T.D., Kidd, K.A., and Fisk, A.T. 2006. Applications, considerations and sources of uncertainty when using stable isotope analysis in ecotoxicology.  Environmental Science and Technology, 40: 7501-7511.  https://doi.org/10.1021/es061263h

Courses Taught

  • ENVS 824 - River Science and Management
  • ENVS 806 - Field Skills in Environment and Sustainability
  • TOX 302 - Introduction to Aquatic Toxicology
  • TOX 898 - Environmental Effects Assessment and Monitoring