Department of Biology
Home People Faculty Guildford
STEPHANIE GUILDFORD, Associate Professor

Ph.D., University of Manitoba
M.S., University of Manitoba
B.S., Dalhousie University

Office:321 LSci
Phone: 218-726-7412

Office: 213 RLB
Phone: 218-726-8064
Large Lakes Observatory


Phytoplankton and nutrient dynamics with a focus on the health and productivity of African and North American great lakes.

Courses Taught

BIOL 3835 Freshwater Ecology

Recent Publications(supervised students in bold)

Kidd, K., Muir, D., Evans, M., Wang, X., Whittle, M., Swanson, H., Johnston, T., & Guildford, S.2012. Biomagnification of mercury through lake trout food webs with differentphysical, chemical and biological characteristics. Science of the Total Envronment 438:135-143.

North, R.I., Smith, R.E.H., Hecky, R.E., Depew, D.C., Leon, L.F., Charlton, M.N., & Guildford, S.J. 2012. Changes in the spatial distribution of seston and nutrient concentrations in the eastern basin of Lake Erie. J. Great Lakes Res. 38:463-475.

Gondwe, M.J., Hecky, R.E., & Guildford, S.J. 2012. Tracing the flux of aquaculture-derived organic wastes in southeast arm of Lake Malawi using carbon and nitrogen stable isotopes. Aquaculture. DOI: 0.1016/j.aquaculture.2012.04.030

Havens, S.M., Hassler, C.S., North, R.L., Guildford, S.J., Silsbe, G.S., Wilhelm, S.W., & Twiss, M.R. 2012. Iron playes a role in nitrate drawdown in phytoplankton in Lake Erie surface waters as observed in lake wide assessments. Can. J. Fish. Aquat. Sci. 69:369-381.

Witte, F., Silsbe, G.M., Hecky, R.E., Goudswaard, P.C., Guildford, S.J., Kishe-Machumu, M.A. & Wanick, J.H. 2011. Did the loss of phytoplanktivorous fish contribute to algal blooms in the Mwanza Gulf of Lake Victoria? Hydrobiologia DOI 10.1007/s10750-011-0893-z

Poste, A.E., Hecky, R.E., & Guildford, S.J.2011.Evaluating microcystin exposure risk through fish consumption. Environ. Sci. & Technol. 45(13):5806-5811.

Palmer, M.E., Winter, J.G., Young, J.D., Dillon, P.J.& Guildford, S.J. 2011. Introduction and summary of research on Lake Simcoe: Research,monitoring, and restoration of a large lake and its watershed. J. Great. Lakes Res. 37 (Supplement 3), 1-6.

Depew, D.C., Houben, A.J., Ozersky, T., Hecky, R.E. & Guildford, S.J. 2011. Submerged aquatic vegetation in Cook's Bay, Lake Simcoe: Assessment of cheanges in response to increased water transparency. J. Great. Lakes Res. 37 (Supplement 3), 72-82.

Depew, D.C., Houben, A.J., Ozersky, T., Hecky, R.E. & Guildford, S.J. 2011. Why does Cladophora fail to reach nuisance proportions in Lake Simcoe? J. Great. Lakes Res. 37 (Supplement 3), 90-102.

Gondwe, M.J., Guildford, S.J. & Hecky, R.E. 2011. Carbon, nitrogen and phosphorus loadings from tilapia fish cages in Lake Malawi and factors influencing their magnitude. J. Great. Lakes Res. 37 (Supplement 1) 93-101.

Gondwe, M.J., Guildford, S.J. & Hecky, R.E. 2011. Physical-chemical measurements in the water column along a transect through a tilapia cage fish farm in Lake Malawi, Africa. J. Great. Lakes Res. 37 (Supplement 1) 102-113.

Ozersky, T., Barton, D.R., Depew, D.C., Hecky, R.E. &Guildford, S.J. 2011. Effects of water movement on the distribution of invasive dreissenid mussels in Lake Simone, Ontario. J. Great. Lakes Res. 37 (Supplement 3) 46-54.

Leon, L.F., Smith, R.E.H., Hipsey, M.R., Bocaniov, D.A., Higgins, S.N., Hecky, R.E., Antenucci, J.P.& Guildford, S.J. 2011. Application of a 3D hydrodynamic-biological model for seasonal and spatial dynamics of water quality and phytoplankton in Lake Erie. J. Great. Lakes Res. 37 (1) 41-53.

Guildford, S.J. & Taylor, W.D. 2011. Evidence supporting the importance of nutrient regeneration by nano- and micrograzers for phytoplankton photosynthesis in Lake Malawi/Nyasa. J. Great. Lakes Res. 37 (Supplememnt 1) 54-60.

Malkin, S.Y., Bocaniov, S.A., Smith,R.E., Guildford, S.J. & Hecky, R.E. 2010. In situ measurements confirm the seasonal dominance of benthic algae over phytoplankton in nearshore primary production of a large lake.Freshwater Biology. 55, 2468-2483.

Malkin, S., Dove, A., Depew, D., Smith, R.E., Guildford, S.J.& Hecky, R.E. 2010. Spatio-temporal patterns of water quality in Lake Ontario and their implications for nuisance growth of Cladophora. J. Great. Lakes Res. 36, 477-489.

GikumaNjuru, P., Guildford., S.J. & Hecky, R.E. 2010. Surficial sediment phosphorus fractions along a biogeochemical gradient in Nyanza (Winam) Gulf, northeastern Lake Victoria and their possible role in phosphorus recycling and internal loading. Biogeochemistry 97 (2-3), 247-261.

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