Research
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 different physical, 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.
Gikuma Njuru, 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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