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W. Keller, M.Sc.
Director
Climate Change and Multiple Stressor Aquatic Research
Adjunct Professor
Biology Department
Laurentian University)
Tel: (705) 671-3858
Fax: (705) 671-3857
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Research Interests:
Documenting and understanding chemical and biological recovery processes in damaged aquatic systems, and investigating the combined effects of multiple stressors (eg. acidification, climate change, UV-B irradiance).
Selected Publications:
MacPhee, S., S. Arnott, and W. Keller. 200_. Thermal structure influences macroinvertebrate predation on crustacean zooplankton: implications of climate warming for shallow lakes. (under review, Oecologia).
Shurin, J.B., M. Winder, R. Adrian, W. Keller, B. Matthews, A.M. Paterson, M. Paterson, B. Pinel-Alloul, J.A. Rusak, and N.D. Yan. 2010. Environmental stability and lake plankton diversity – contrasting effects of chemical and thermal variability. (in press, Ecology Letters).
Tropea, A.E., A.M. Paterson, W. Keller, and J.P. Smol. 200_. Sudbury sediments revisited: evaluating limnological recovery in a multiple stressor environment. (in press, Water Air Soil Pollut.).
Valois, A., W. Keller, and C. Ramcharan. 200_. Abiotic and biotic processes in recovering lakes: the role of metal toxicity and fish predation as barriers to zooplankton recovery. (under review, Freshwat. Biol.)
Helmus, M.R., W. Keller , M.J. Paterson, N.D. Yan, C.H. Cannon, and J.A. Rusak. 2009. Communities contain closely related communities during ecosystem disturbance. (in press, Ecology Letters).
Adrian, R., C.M. O’Reilly, H. Zagarese, S.B. Baines, D.O. Hessen, W. Keller, D.M. Livingstone, R. Sommaruga, D. Straile, E. Van Donk, G.A. Weyhenmeyer, and M. Winder. 2009. Lakes as sentinels of climate change.Limnol. Oceanogr. 54(6, part 2): 2283-2297.
Keller, W. 2009. Limnology in northeastern Ontario: from acidification to multiple stressors. Can. J. Fish. Aquat. Sci. 66: 1189-1198.
Jeziorski, A., N.D. Yan, A.M. Paterson, A.M. DeSellas, M.A. Turner, D.S. Jeffries, W. Keller, R.C. Weeber, D.K. McNicol, M.E. Palmer, K. McIver, K. Arseneau, B.K. Ginn, B.F. Cumming, and J.P. Smol. 2008. The widespread threat of calcium decline in freshwaters. Science 322: 1374-1377.
Keller, W., A. Paterson, K. Somers, P. Dillon, J. Heneberry, and A. Ford. 2008. Relationships between dissolved organic carbon concentrations, weather, and acidification in small Boreal Shield lakes. Can. J. Fish. Aquat. Sci. 65: 786-795.
Winter, J.G., W. Keller, A.M. Paterson and N.D. Yan. 2008. Three decades of recovery of the phytoplankton community in Clearwater Lake (Sudbury, Canada) from acid and metal contamination. Verh. Internat. Verein. Limnol. 30: Part 2, 247-252.
Yan, N.D., K.M. Somers, R.E. Girard, A.M. Paterson, B. Keller, C.W. Ramcharan, J.A. Rusak, R. Ingram, G.E. Morgan, and J.M. Gunn. 2008. Long-term trends in zooplankton of Dorset, Ontario lakes: the probable interactive effects of changes in pH, TP, DOC and predators. Can. J. Fish. Aquat. Sci. 65: 862-877.
Clair, T.A., J. Aherne, I.F. Dennis, M. Gilliss, S. Couture, D. McNicol, R. Weeber, P.J. Dillon, W. Keller, D.S. Jeffries, S. Page, K. Timoffee, and B.J. Cosby. 2007. Past and future changes to acidified eastern Canadian lakes: a geochemical modeling approach. Applied Geochemistry 22:1189-1195. DOI 10.1016/j.apgeochem.2007.03.010.
Graham, M.D., R.D. Vinebrooke, W. Keller, J. Heneberry, K.H. Nicholls, and D.L. Findlay. 2007. Comparative responses of phytoplankton during chemical recovery in atmospherically and experimentally acidified lakes J. Phycol. 43: 908-923.
Keller, W. 2007. Implications of climate warming for Boreal Shield lakes: a review and synthesis. Environ. Reviews 15: 99-112. doi:10.1139/A07-002.
Keller, W., N.D. Yan, J.M. Gunn, and J. Heneberry. 2007. Recovery of acidified lakes: lessons from Sudbury, Ontario, Canada. Water Air Soil Pollut. Focus 7: 17-322. DOI 10.1007/s11267-006-9061-2.
Monteith, D.T., J.L. Stoddard, C.D. Evans, H.A. de Wit, M. Forsius, T. Hogasen, A. Wilander, B.L. Skjelkvale, D.S. Jeffries, J. Vuorenmaa, B. Keller, J. Kopacek, and J. Vesely. 2007. Dissolved organic carbon trends resulting from changes in atmospheric deposition chemistry. Nature 450: 537-541. doi: 10.1038/nature06316.
Tanentzap, A.J., N.D. Yan, W. Keller, R. Girard, J. Heneberry, J.M. Gunn, D.P. Hamilton, and P.A. Taylor. 2007. Cooling lakes while the world warms: effects of forest re-growth and increased dissolved organic matter on the thermal regime of a temperate urban lake. Limnol. Oceanogr. 53: 404-410.
Keller, W., J. Heneberry, J. Leduc, J. Gunn, and N. Yan. 2006. Variations in epilimnion thickness in small Boreal Shield lakes: relationships with transparency, weather and acidification. Env. Mon. Assess. 115:419-431.
Keller, W., J. Heneberry, and J. Leduc. 2005. Linkages between weather, dissolved organic carbon, and coldwater habitat in a Boreal Shield lake recovering from acidification. Can. J. Fish. Aquat. Sci. 62:340-346.
Molot, L.A., W. Keller, P.R. Leavitt, R.D. Robarts, M.J. Waiser, M.T. Arts, T.A. Clair, R. Pienitz, N.D. Yan, D.K. McNicol, Y. Prairie, P.J. Dillon, M. Macrae, R. Bello, R. Nordin, P.J. Curtis, J.P. Smol, and M. Douglas. 2004. Risk analysis of dissolved organic matter-mediated ultraviolet B exposure in Canadian inland waters. Can. J. Fish. Aquat. Sci. 61:2511-2521.
Yan, N.D., R. Girard, J. Heneberry, W. Keller, J. Gunn, and P.J. Dillon. 2004. Recovery of copepod, but not cladoceran, zooplankton from severe and chronic effects of multiple stressors. Ecology Letters 7:452-460.
Arnott, S.E., P.J. Dillon, K. Somers, and W. Keller. 2003. Inter- and intra-annual variability in acidification-related parameters in lakes with different flushing rates and acid deposition histories. Env. Mon. Assess. 88: 21-37.
Arnott, S.E., B. Keller, N. Yan, P. Dillon, M. Paterson, and D.Findlay. 2003. Using temporal coherence to determine responses to climate change in boreal shield lakes. Env. Mon. Assess. 88:365-388.
Jeffries, D.S., T.G. Brydges, P.J. Dillon, and W. Keller. 2003. Monitoring the results of Canada/U.S.A. acid rain control programs: some lake responses. Env. Mon. Assess. 88:3-19.
Keller, W., J.H. Heneberry, and S.S. Dixit. 2003. Decreased acid deposition and the chemical recovery of Killarney, Ontario, lakes. Ambio 32:183-189.
Pollard, H.G., J. Colbourne, and W. Keller. 2003. Reconstruction of centuries old Daphnia communities in a lake recovering from acidification and metal-contamination. Ambio 32:214-218.
Yan, N.D., B. Leung, W. Keller, S.E. Arnott, J.M. Gunn, and G. Raddum. 2003. Developing conceptual ecological frameworks for the recovery of aquatic biota from acidification. Ambio 32:165-169.
Keller, W., N.D. Yan, K.M. Somers, and J.H. Heneberry. 2002. Crustacean zooplankton communities in lakes recovering from acidification. Can. J. Fish. Aquat. Sci. 59:726-735.
Arnott, S.E., N. Yan, W. Keller, and K. Nicholls. 2001. The influence of drought-induced acidification on the recovery of plankton in Swan Lake. Ecol. Applicat. 11:747-763.
Dixit, S., W. Keller, A. Dixit, and J. Smol. 2001. Diatom-inferred dissolved organic carbon reconstructions provide assessments of past UV-B penetration in Canadian Shield lakes. Can. J. Fish. Aquat. Sci. 58:543-550.
Keller, W., P. J. Dillon, J. Heneberry, M. Malette, and J. Gunn. 2001. Sulphate in Sudbury, Ontario, Canada lakes: recent trends and status. Water Air Soil Pollut. 130:793-798.
Keller, W., S.S. Dixit, and J. Heneberry. 2001. Calcium declines in northeastern Ontario lakes. Can. J. Fish. Aquat. Sci. 58:2011-2020.
Keller, W., J. Gunn, and N. Yan. 1999. Acid rain: perspectives on lake recovery. J. Aquat. Ecosys. Stress Recovery 6:207-216.
Keller, W., J. Heneberry, and J. Gunn. 1999. Effects of emission reductions from the Sudbury smelters on the recovery of acid and metal-damaged lakes. J. Aquat. Ecosys. Stress Recovery 6:189-198.
Carbone, J., W. Keller, and R.W. Griffiths. 1998. Effects of changes in acidity on aquatic insects in rocky littoral habitats of lakes near Sudbury, Ontario. Restoration Ecology 6:376-389.
Gunn, J.M., and W. Keller. 1998. Introduction to special issue on restoration of acid-stressed lakes. Restoration Ecology 6:316-317.
Keller, W., and N.D. Yan. 1998. Biological recovery from lake acidification: zooplankton communities as a model of patterns and processes. Restoration Ecology 6:364-375.
Yan, N.D., W. Keller, N.M. Scully, D.R.S. Lean, and P.J. Dillon. 1996. Increased UV-B penetration in a lake owing to drought-induced acidification. Nature 381:141-143.
Yan, N.D., W. Keller, K.M. Somers, T.W. Pawson, and R. Girard. 1996. Recovery of crustacean zooplankton from acid and metal contamination: comparing manipulated and reference lakes. Can. J. Fish. Aquat. Sci. 53:1301-1327.