Webb, D., R. Robarts and E.E. Prepas. (in press). Influence of extended water column mixing during the first two years of hypolimnetic oxygenation on the phytoplankton community of Amisk Lake, Alberta. Can. J. Fish. Aquat. Sci. (Accepted 15 August 1994, 31 ms pp + 9 tables + 5 figures).
Zhang Y. and E.E. Prepas. (in press a). Regulation of the dominance of planktonic diatoms and cyanobacteria in four eutrophic hardwater lakes by nutrients, water column stability and temperature. Can. J. Fish. Aquat. Sci. (Accepted 7 July 1995, 27 ms pp + 6 tables + 5 figures).
Zhang, Y. and E.E. Prepas. (in press b). Short-term effects of Ca(OH)2 additions on phytoplankton biomass: a comparison of laboratory and in-situ experiments. Water Res. (Accepted 25 September 1995, 16 ms pp + 2 tables + 7 figures).
Kotak, B.G., A.K-Y. Lam, E.E. Prepas, S.L. Kenefick and S.E. Hrudey. 1995. Variability of the hepatotoxin, microcystin-LR, in hypereutrophic drinking water lakes. J. Phycol. 31:248-263.
Lam, A.K-Y, E.E. Prepas, D. Spink and S.E. Hrudey. 1995. Chemical control of hepatotoxic phytoplankton blooms: Implications for human health. Water Res. 29:1845-1854.
Lam, A.K-Y., P.M. Fedorak and E.E. Prepas. 1995. Biotransformation of the cyanobacterial hepatotoxin microcystin-LR, as determined by HPLC and protein phosphatase bioassay. Envir. Sci. and Tech. 29:242-246.
Babin, J., E.E. Prepas, T.P. Murphy, M. Serediak, P.J. Curtis, Y. Zhang and P.A. Chambers. 1994. Impact of lime on sediment phosphorus release in hardwater lakes: the case of hypereutrophic Halfmoon Lake, Alberta. Lake and Reserv. Manage. 8:131-142.
Chambers, P.A. and E.E. Prepas. 1994. Nutrient dynamics in riverbeds: the impact of sewage effluent and aquatic macrophytes. Water Res. 28:453-464.
Hrudey, S.E., S.L. Kenefick, T.W. Lambert, B.G. Kotak, E.E. Prepas and C.F.B. Holmes. 1994a. Sources of uncertainty in assessing the health risk of cyanobacterial blooms in drinking water supplies. pp 1-5. In: Proceedings First International Symposium on Detection Methods for Cyanobacterial (Blue-green Algal) Toxins. Royal Society of Chemistry. Bath, U.K.
Hrudey, S.E., S.L. Kenefick, N. Best, T. Gillespie, B.G. Kotak, E.E. Prepas and H.G. Peterson. 1994b. Liver toxins and odour agents in cyanobacterial blooms in Alberta surface water supplies. In: Proceedings Fifth National Conference on Drinking Water, American Water Works Assoc: 383-390.
Manning, P.G., T.P. Murphy and E.E. Prepas. 1994. Forms of iron and the bioavailability of phosphorus in eutrophic Amisk Lake, Alberta. Can. Mineral. 32:459-468.
Curtis, P.J. and E.E. Prepas. 1993. Trends of dissolved organic carbon (DOC) concentration from freshwater to saltwater. [XXV Congress of the International Association of Limnology, Aug. 1992]. Internationale Vereinigung für theoretische und angewandte limnologie: 25:298-301.
Dinsmore, W.P. and E.E. Prepas. 1993. Changes in profundal macroinvertebrate diversity in a deep eutrophic lake undergoing hypolimnetic oxygen injection, with particular reference to Chironomus spp. (Chironomidae). [XXV Congress of the International Association of Limnology, August 1992]. Internationale Vereinigung für theoretische und angewandte limnologie 25:302-306.
Kenefick, S.L., S.E. Hrudey, H.G. Peterson and E.E. Prepas. 1993. Toxin release from Microcystis aeruginosa after chemical treatment. Water Sci. Tech. 27:433-440.
Kotak, B.G., S.L. Kenefick, D.L. Fritz, C.G. Rousseaux, E.E. Prepas and S.E. Hrudey. 1993. Occurrence and toxicological evaluation of cyanobacterial toxins in Alberta lakes and farm dugouts. Water Research 27:495-506.
Murphy, T., E.E. Prepas, J. Babin, K. Hall and P. Manning. 1993. Developments in lake restoration in western Canada. Canadian Water Resources Journal 18:1-8.
Babin, J., E.E. Prepas and Y. Zhang. 1992. Application of lime and alum to stormwater retention lakes to improve water quality. Water Pollution Research Journal of Canada 27:365-381.
Chambers, P.A., E. E. Prepas and K. Gibson. 1992. Temporal and spatial dynamics in riverbed chemistry: the influence of flow and sediment composition. Canadian Journal of Fisheries and Aquatic Sciences 49:2128-2140.
Dinsmore, P. and E.E. Prepas. 1992. Changes in profundal macroinvertebrate density and distribution in a lake undergoing hypolimnetic oxygen injection. In: Aquatic Systems in Semi-Arid Regions. R. Robarts and M. Bothwell (eds.). N.H.R.I. Symposium Series 7, Environment Canada, Saskatoon: 313-322.
Kenefick, S.L., S.E. Hrudey, E.E. Prepas, N. Motkosky and H.G. Peterson. 1992. Odorous substances and cyanobacterial toxins in prairie drinking water sources. Water Science and Technology 25:147-154.
Webb, D.J., B. K. Burnison, A.M. Trimbee and E.E. Prepas. 1992. Comparison of chlorophyll a extractions with ethanol and dimethyl sulfoxide/acetone, and a concern about spectrophotometric phaeopigment correction. Canadian Journal of Fisheries and Aquatic Sciences 49:2331-2336.
Chambers, P.A., E.E. Prepas, H.R. Hamilton and M.L. Bothwell. 1991a. Current velocity and its effect on aquatic macrophytes in flowing waters. Ecological Applications 1:249-257.
Chambers, P.A., J.M. Hanson and E.E. Prepas. 1991b. The effect of aquatic plant chemistry and morphology on feeding selectivity by the crayfish, Orconectes virilis. Freshwater Biology 25:339-348.
Fox, M., C. Vantol, E.E. Prepas, E. Nagy and T.P. Murphy. 1991. Fate of trifluralin in anaerobic sediment from an Alberta farm dugout. Water Pollution Research Journal of Canada 26:17-26.
Manning, P.G., T.P. Murphy and E.E. Prepas. 1991. Intensive vivianite formation in the bottom sediments of mesotrophic Narrow Lake, Alberta. Canadian Mineralogist 29:77-85.
Peters, R.H., J.J Armesto, R. Boeken, J.J. Cole, C.T. Driscoll, C.M. Duarte, T.M. Frost, J.P. Grime, J. Kolasa, E.E. Prepas and W.G. Sprules. 1991. On the relevance of comparative ecology to the larger field of ecology. In: J.J. Cole, G.M. Lovett and S.E.G. Findlay (eds.). Comparative analysis of ecosystems: patterns, mechanisms and theories. Springer-Verlag: 46-63.
Prepas, E.E. 1991. Review of S-0 Ryding & W. Rast (eds.). The control of eutrophication of lakes and reservoirs. In: Man and the Biosphere Series, Volume 1. UNESCO and the Parthenon Publishing Group, Paris. Vegetatio 93:74-76.
Chambers, P.A. and E.E. Prepas. 1990. Competition and coexistence in submerged aquatic plant communities: the effects of species interactions versus abiotic factors. Freshwater Biology 23:541-550.
Chambers, P.A., J.M. Hanson, J.M. Burke and E.E. Prepas. 1990. The impact of the crayfish Orconectes virilis on aquatic macrophytes. Freshwater Biology 24:81-91.
Hanson, J.M., P.A. Chambers and E.E. Prepas. 1990. Selective foraging by the crayfish Orconectes virilis and its impact on benthic macroinvertebrates. Freshwater Biology 24:69-80.
Marino, R., R.W. Howarth, J. Shamess and E.E. Prepas. 1990. Molybdenum and sulfate as controls on the abundance of nitrogen-fixing cyanobacteria in saline lakes in Alberta. Limnology and Oceanography 35:245-259.
Mitchell, P.A. and E.E. Prepas (eds.). 1990. Atlas of Alberta Lakes , The University of Alberta Press. (detailed information on 100 Alberta lakes: author of introduction on Water Quality and six lake chapters, coauthor on nine lake chapters) 690 pp.
Murphy, T.P. and E.E. Prepas. 1990. Lime treatment of hardwater lakes to reduce eutrophication. [XXIV Congress of the International Association of Limnology, Aug. 1989]. Internationale Vereinigung für theoretische und angewandte limnologie 24:327-334.
Murphy, T.P., E.E. Prepas, J.T. Lim, J.M. Crosby and D.T. Walty. 1990. Evaluation of calcium carbonate and calcium hydroxide treatments of prairie drinking water dugouts. Lake and Reservoir Management 6(1):101-108.
Prepas, E.E., D.J. Webb, C.L.K. Robinson and T.P. Murphy. 1990a. Impact of liquid oxygen injection on a deep, naturally eutrophic lake: Amisk Lake, Alberta, Year one. [XXIV Congress of the International Association of Limnology, Aug. 1989]. Internationale Vereinigung für theoretische und angewandte limnologie 24:320.
Prepas, E.E., T.P. Murphy, J. Crosby, D.T. Walty, J.T. Lim, J. Babin and P.A. Chambers. 1990b. Reduction of phosphorus and chlorophyll a concentrations following CaCO3 and Ca(OH)2 additions to hypereutrophic Figure Eight Lake, Alberta. Environmental Science and Technology 24:1252-1258.
Shaw, J.F.H. and E.E. Prepas. 1990a. Exchange of phosphorus from shallow sediments at nine Alberta lakes. Journal of Environmental Quality 19:249-256.
Shaw, J.F.H. and E.E. Prepas. 1990b. Relationships between phosphorus in shallow sediments and in the trophogenic zone of seven Alberta lakes. Water Research 24:551-556.
Shaw, R.D. and E.E. Prepas. 1990a. Groundwater-lake interactions: I. Accuracy of seepage meter estimates of lake seepage. Journal of Hydrology 119:105-120.
Shaw, R.D. and E.E. Prepas. 1990b. Groundwater-lake interactions: II. Nearshore seepage patterns and the contribution of groundwater to lakes in central Alberta. Journal of Hydrology 119:121-136.
Shaw, R.D., J.F.H. Shaw, H. Fricker and E.E. Prepas. 1990. An integrated approach to quantify groundwater transport of phosphorus to Narrow Lake, Alberta. Limnology and Oceanography 35:870-886.
Babin, J., E.E. Prepas, T.P. Murphy and H.R. Hamilton. 1989. A test of the effects of lime on algal biomass and total phosphorus concentrations in Edmonton stormwater retention lakes. Lake and Reservoir Management 5(1):129-135.
Chambers, P.A., E.E. Prepas, M.L. Bothwell and H.R. Hamilton. 1989. Roots versus shoots in nutrient uptake by aquatic macrophytes in flowing waters. Canadian Journal of Fisheries and Aquatic Sciences 46:435-439.
Hanson, J.M., W.C. Mackay and E.E. Prepas. 1989a. Effect of size-selective predation by muskrats (Ondatra zebithicus) on a population of unionid clams (Anodonta grandis simpsoniana). Journal of Animal Ecology 58:15-28.
Hanson, J.M., E.E. Prepas and W.C. Mackay. 1989b. Size distribution of the macroinvertebrate community in a freshwater lake. Canadian Journal of Fisheries and Aquatic Sciences 46:1510-1519.
Shaw, J.F.H. and E.E. Prepas. 1989. Temporal and spatial patterns of porewater phosphorus in shallow sediments, and its potential transport in Narrow Lake, Alberta. Canadian Journal of Fisheries and Aquatic Sciences 46:981-988.
Shaw, R.D. and E.E. Prepas. 1989. Anomalous, short-term influx of water into seepage meters. Limnology and Oceanography 34:1343-1351.
Shaw, R.D., A.M. Trimbee, A Minty, H. Fricker and E.E. Prepas. 1989. Atmospheric deposition of phosphorus and nitrogen in central Alberta with emphasis on Narrow Lake. Water, Air, and Soil Pollution 43:119-134.
Chambers, P.A. and E.E. Prepas. 1988. Underwater spectral attenuation and its effect on the maximum depth of angiosperm colonization. Canadian Journal of Fisheries and Aquatic Sciences 45:1010-1017.
Hanson, J.M., W.C. Mackay and E.E. Prepas. 1988a. The effects of water depth and density on the growth of a unionid clam. Freshwater Biology 19:345-355.
Hanson, J.M., W.C. Mackay and E.E. Prepas. 1988b. Population size, growth, and production of a unionid clam, Anodonta grandis simpsoniana, in a small, deep Boreal Forest lake in central Alberta. Canadian Journal of Zoology 66:247-253.
Manning, P.G., T.P. Murphy, T. Mayer and E.E. Prepas. 1988. Effect of copper sulfate on pyrite formation in reducing sediments. Canadian Mineralogist 26:965-972.
Prepas, E.E. and T.P. Murphy. 1988. Sediment-water interactions in farm dugouts previously treated with copper sulfate. [Invited paper at NALMS Annual meeting November 1987]. Lake and Reservoir Management 4(1):161-168.
Prepas, E.E. and A.M. Trimbee. 1988a. Evaluation of indicators of nitrogen limitation in deep prairie lakes with laboratory bioassays and limnocorrals. Hydrobiologia 159:269-276.
Prepas, E.E. and A.M. Trimbee. 1988b. Impact of nitrogen and phosphorus additions on phytoplankton and zooplankton in deep prairie lakes. [XXIII Congress of the International Association of Limnology, Feb. 1987]. Internationale Vereinigung für theoretische und angewandte limnnologie 23:227.
Prepas, E.E., M.E. Dunnigan and A.M. Trimbee. 1988. Comparison of in-situ estimates of chlorophyll a obtained with Whatman GF/F and BG/C glass-fiber filters in mesotrophic to hypereutrophic lakes. Canadian Journal of Fisheries and Aquatic Sciences 45:910-914.
Trimbee, A.M. and E.E. Prepas. 1988a. Dependence of lake oxygen depletion rates on maximum oxygen storage in a partially meromictic lake in Alberta. Canadian Journal of Fisheries and Aquatic Sciences 45:571-576.
Trimbee, A.M. and E.E. Prepas. 1988b. The effect of oxygen depletion on the timing and magnitude of blue-green algal blooms. [XXIII Congress of the International Association of Limnology, Feb. 1987]. Internationale Vereinigung für theoretische und angewandte limnologie 23:220-226.
Prepas, E.E. and T.P. Murphy. 1987. Report on the 1986 treatment of Figure Eight lake. Planning Division, Alberta Environment. 105 p.
Prepas, E.E., T.P. Murphy and P.G. Manning. 1987. Report on the 1985 evaluation of Figure Eight Lake, Alberta. Planning Division Alberta Environment. 84 p.
Trimbee, A.M. and E.E. Prepas. 1987. Evaluation of total phosphorus as a predictor of the relative biomass of blue-green algae with emphasis on Alberta lakes. Canadian Journal of Fisheries and Aquatic Sciences 14:1337-1342.
Campbell, C.E. and E.E. Prepas. 1986. Evaluation of factors related to the unusually low chlorophyll levels in prairie saline lakes. Canadian Journal of Fisheries and Aquatic Sciences 43:846-854.
Munn, N.L. and E.E. Prepas. 1986. Seasonal dynamics of phosphorus partitioning and export in two streams in Alberta, Canada. Canadian Journal of Fisheries and Aquatic Sciences 43:2464-2471.
Babin, J. and E.E. Prepas. 1985. Modelling winter oxygen depletion rates in ice-covered temperate zone lakes in Canada. Canadian Journal of Fisheries and Aquatic Sciences 42:239-249.
Bierhuizen, J.F.H. and E.E. Prepas. 1985. Relationship between nutrients, dominant ions, and phytoplankton standing crop in prairie saline lakes. Canadian Journal of Fisheries and Aquatic Sciences 42:1588-1594.
Riley, E.T. and E.E. Prepas. 1985. Comparison of the phosphorus-cholorophyll relationships in mixed and stratified lakes. Canadian Journal of Fisheries and Aquatic Sciences 42:831-835.
Prepas, E.E. 1984. Some statistical methods for the design of experiments and analysis of samples, p. 266-335. In J.A. Downing and F.H. Rigler (eds.). A Manual on methods for the assessment of secondary productivity in freshwaters. Blackwell, London.
Prepas, E.E. and J. Vickery. 1984. Contribution of particulate phosphorus (>250 µm) to the total phosphorus pool in lake water. Canadian Journal of Fisheries and Aquatic Sciences 41:351-363.
Prepas, E.E. and J. Vickery. 1984. Seasonal changes in total phosphorus and the role of internal loading in western Canadian lakes. [XXII Congress of the International Association of Limnology, August 1983]. Internationale Vereinigung für theoretische und angewandte limnologie 22:303-308.
Riley, E.T. and E.E. Prepas. 1984. Role of internal phosphorus loading in two shallow, productive lakes in Alberta, Canada. Canadian Journal of Fisheries and Aquatic Sciences 41:845-855.
Prepas, E.E. 1983a. Orthophosphate turnover time in shallow productive lakes. Canadian Journal of Fisheries and Aquatic Sciences 40:1412-1418.
Prepas, E.E. 1983b. Total dissolved solids as a predictor of lake biomass and productivity. Canadian Journal of Fisheries and Aquatic Sciences 40:92-95.
Prepas, E.E. and D.O. Trew. 1983. Evaluation of the phosphorus-chlorophyll relationship for lakes off the Precambrian Shield in western Canada. Canadian Journal of Fisheries and Aquatic Sciences 40:27-35.
Prepas, E.E. and F.H. Rigler. 1982. Improvements in quantifying the phosphorus concentration in lake water. Canadian Journal of Fisheries and Aquatic Sciences 39:822-829.
Prepas, E.E. and F.H. Rigler. 1981. A test of a simple model to predict short-term changes in the phosphorus concentration in lake water [XXI Congress of the International Association of Limnology, August 1980]. Internationale Vereinigung für theoretische und angewandte limnologie 21:187-196.
Prepas, E. 1978. Sugar-frosted Daphnia: an improved fixation technique for Cladocera. Limnology and Oceanography 23:557-559.
Prepas, E. and R.H. Rigler. 1978. The enigma of Daphnia death rates. Limnology and Oceanography 23:970-988.
Prepas, E.E. 1983. The influence of phosphorus and zooplankton on chlorophyll levels in Alberta lakes. Research Management Division, Alberta Environment. RMD Report 83/23. 107 p.
Prepas, E.E. 1982. Seasonal dynamics of phosphorus and chlorophyll in western Canadian lakes. EOS, Transactions, American Geophysical Union 63:966.
Other publications from work done in my laboratory:
Murtaugh, P.A. 1985. Vertical distributions of zooplankton and population dynamics of Daphnia in a meromictic lake. Hydrobiologia 123:47-57.