Senior Research Fellow, Northern Studies
Cooperative Freshwater Ecology Unit
Living with Lakes Centre, Laurentian University
935 Ramsey Lake Road
Documenting and understanding the chemical and biological nature of northern aquatic ecosystems and investigating the combined effects of climate change and multiple environmental stressors.
Publications (last 10 years)
Hadley, K.R., A.M. Paterson, K. Rühland, H.White, B. Wolfe, W. (Bill) Keller, and J.P. Smol. 2019. Biological and geochemical changes in shallow lakes of the Hudson Bay Lowlands: a response to recent warming. J. Paleolimnology DOI: 10.1007/s10933-018-0061-9.
Keller, W., J. Heneberry, and B. Edwards. 2018. Recovery of acidified Sudbury, Ontario, Canada lakes: a multi-decade synthesis and update. Environ. Rev. 10.1139/er-2018-0018.
MacLeod, J., W. Keller, and A.M. Paterson. 2018. Crustacean zooplankton in lakes of the far north of Ontario, Canada. Polar Biology 41: 1257-1267 DOI 10.1007/s00300-018-2282-9.
MacLeod, J., W. Keller, A.M. Paterson, R.D. Dyer, and J.M. Gunn. 2017. Scale and watershed features determine lake chemistry patterns across physiographic regions in the far north of Ontario, Canada. J. Limnol. 76:211-220.
Valois, A.E., C. Sarrazin-Delay, K. Somers, and W. Keller. 2016. Are bioassessments based on the reference condition approach affected by rapid approaches to sample collection and processing? J.Limnol.75(2):392-402.DOI 10.4081/jlimnol.2015.1388.
Hargan, K.E., C. Nelligan, A, Jeziorski, K.M. Rühland, A.M. Paterson, W. Keller, and J.P. Smol. 2016. Tracking the long-term responses of diatoms and cladocerans to climate warming and human disturbances across lakes of the Ring of Fire in the Far North of Ontario, Canada. J. Paleolimnology 56:153-172. DOI 10.1007/s10933-016-9901-7.
Celis-Salgado, M.P., W. Keller, and N.D. Yan. 2016. Calcium and sodium as regulators of the recovery of four Daphnia species along a gradient of metals and base cations in contaminated lakes in Sudbury, Ontario, Canada. J. Limnol. 75(s2): 36-49.
Yan, N.D., J. Bailey, J. McGeer, M. Manca, W. Keller, M. Celis-Salgado, and J.M. Gunn. 2016. Arrive, survive, and thrive: the essential stages of re-colonization and recovery of zooplankton in urban lakes in Sudbury, Canada J. Limnol. 75(s2): 4-14.
Labaj, A.L., J.B. Korosi, J. Kurek, A. Jeziorski, W. Keller, and J.P. Smol. 2016. The responses of Bosmina size structure to the acidification and subsequent recovery of lakes near Sudbury, Canada. J. Limnol. 75(s2): 22-29.
Poulain, A.J., S. Aris-Brosou, J. Blais, M. Brazeau, W. Keller, and A.M. Paterson. 2015. Microbial DNA records historical delivery of anthropogenic mercury. ISME Journal 9: 2541-2550.
Jeziorski, A., B. Keller, R.D. Dyer, A.M. Paterson, and J.P. Smol. 2015. Differences among modern-day and historical cladoceran communities from the “Ring of Fire” lake region of northern Ontario: Identifying responses to climate warming. Fundamental and Applied Limnology 186: 203-216..
Hargan, K.E., K.M. Rühland, A.M. Paterson, S.A. Finkelstein, J.R. Holmquist, G. MacDonald, W. Keller, and J.P. Smol. 2015. The influence of water table depth and pH on the spatial distribution of diatom species in peatlands of the Boreal Shield and Hudson Plains, Canada. Botany 93: 57-74.
Persaud, A., A. Luek, B. Keller, C. Jones, P. Dillon, J. Gunn, and T. Johnston. 2015. Trophic dynamics of several fish species in lakes of a climatically sensitive region, the Hudson Bay Lowlands. Polar Biology 38: 651-664.
Balistrieri, L.S., C.A. Mebane, T.S. Schmidt, and W. Keller. 2014. Expanding a metal mixture acute toxicity models to natural stream and lake invertebrate communities. Environ. Tox. Chem.doi.org/10.1002/etc.2824.
Jeziorski, A., A.J. Tanentzap, N.D. Yan, A.M. Paterson, M.E. Palmer, J.B. Korosi, J. Rusak, M. Arts, W. Keller, R. Ingram, and J.P. Smol. 2014. The jellification of north temperate lakes. Proc. Roy. Soc. B. 282: 20142449.
Garmo, Ø.A., B.L. Skjelkvale, H.E. de Wit, L. Colombo, C. Curtis, J. Folster, A. Hoffmann, T. Hogasen, D. Jeffries, W. Keller, V. Majer, A. Paterson, M. Rogora, D. Rzychon, A. Steingruber, J.L. Stoddard, J. Vuorenmaa, and A. Worsztynowicz. 2014. Trends in surface water chemistry in acidified areas in Europe and North America from 1990 to 2008. Water Air Soil Pollution 225:1880 DOI 10.1007/s11270-014-1880-6.
Keller, W., A. Paterson, K. Rühland, and J. Blais. 2014. Introduction – environmental change in the Hudson and James Bay region. Arctic, Antarctic and Alpine Research 46: 2-5.
Paterson, A., B.Keller, C. Jones, K. Rühland, and J. Winter. 2014. An exploratory survey of water chemistry and plankton communities in lakes near the Sutton River, Hudson Bay Lowlands, Ontario, Canada. Arctic, Antarctic and Alpine Research 46: 121-138.
Stockdale, A., E. Tipping, S. Lofts, J. Fott, Ø.A. Garmo, J. Hruska, B. Keller, S. Löfgren, S.C. Maberly, V. Majer, S.A. Nierzwicki-Bauer, G. Persson, A-K. Schartau, S. J. Thackeray, A. Valois, J. Vrba, B. Walseng and N. Yan. 2014. Metal and proton toxicity to lake zooplankton: application of a chemical speciation based modeling approach. Environ. Pollut. 186: 115-125.
Rühland, K., K. Hargan, A. Jeziorski, A. Paterson, W. Keller, and J. Smol. 2014 . A multi-trophic exploratory survey of recent environmental change using lake sediments in the Hudson Bay Lowlands, Ontario. Arctic, Antarctic and Alpine Research 46: 139-158.
Jones, F.C., S. Sinclair and W. Keller. 2014. Benthic macroinvertebrate communities in five rivers of the Coastal Hudson Bay Lowland. Polar Biology 37: 141-147.
Rühland, K.M., A.M. Paterson, W. Keller, N. Michelutti, and J.P. Smol. 2013. Global warming triggers the loss of a key Arctic refugium. Proc. Roy. Soc. B. 280: 20131887.
Brazeau, M.L., J.M. Blais, A.M. Paterson, W. Keller, and A.J. Poulain. 2013. Evidence for microbe-mediated production of elemental mercury (Hg0) in subarctic lake sediments. Appl. Geochem. 37: 142-148..
Audet, C., S. MacPhee, and W. Keller. 2013. Constructed ponds colonized by crustacean zooplankton: local and regional influences. J. Limnol. 72: 524-530. DOI: 10.4081/jlimnol. 2013.e43.
Webster, N.I., W. Keller and C. Ramcharan. 2013. Restoration of zooplankton communities in industrially damaged lakes: influences of residual metal contamination and the recovery of fish communities. Restoration Ecology 21: 785-792.
Palmer, M.E., Keller, W., and N.D. Yan. 2013. Reassessing the recovery of crustacean zooplankton communities in historically acidified and metal-contaminated lakes: a comparative analysis of the temporal limitations of regional restoration targets. J. Appl. Ecol. 50: 107-118.
Brazeau, Michelle L., Alexandre J. Poulain, Andrew Paterson, Wendel Keller, Hamed Sanei and Jules M. Blais. 2013. Recent Changes in Mercury deposition and primary productivity inferred from sediments of lakes from the Hudson Bay Lowlands, Ontario, Canada. Environ. Pollut. 173: 52-60.
Jeziorski, A., B. Keller, A.M. Paterson, C.M. Greenaway, and J.P. Smol. 2013. Aquatic ecosystem responses to rapid recovery from extreme acidification and metal contamination in lakes near Wawa, Ontario. Ecosystems 16: 209-223.
Greenaway, C.M., AM. Paterson, W. Keller, and J.P. Smol. 2012. Scaled-chrysophyte assemblage changes in the sediment records of lakes recovering from marked acidification and metal-contamination near Wawa, Ontario, Canada. J. Limnol. 71: 267-278.
Greenaway, C.M., A.M. Paterson, W. Keller, and J.P. Smol. 2012. Dramatic diatom species assemblage responses in lakes recovering from acidification and metal- contamination near Wawa, Ontario, Canada: a paleolimnological perspective. Can. J. Fish. Aquat. Sci. 69: 656-669.
Khan, F.R., W. Keller, N.D. Yan, P.G. Welsh, C.M. Wood, and J,C. McGeer. 2011. Application of biotic ligand and toxic unit modeling approaches to predict improvement in species richness in smelter damaged lakes near Sudbury. Environ. Sci Technol. 46: 1641-1649.
Valois, A.E., W. Keller, and C.W. Ramcharan. 2011. Recovery in a multiple stressor environment: using the reference condition approach to examine zooplankton community change along opposing gradients. J. Plank. Res. 33: 1417-1429.
Tropea, A.E., A.M. Paterson, W. Keller, and J.P. Smol. 2011. Diatoms as indicators of long-term nutrient enrichment in metal contaminated lakes from Sudbury, Ontario. Lake and Reserv. Mgmt. 27: 48-60.
MacPhee,S., S. Arnott, and W. Keller. 2011. Lake thermal structure influences macroinvertebrate predation on crustacean zooplankton. J. Plank. Res. 33: 1586-1595.
Valois, A., W. Keller, and C. Ramcharan. 2010. Abiotic and biotic processes in recovering lakes: the role of metal toxicity and fish predation as barriers to zooplankton recovery. Freshwat. Biol. 55: 2585-2597.
Tropea, A.E., A.M. Paterson, W. Keller, and J.P. Smol. 2010. Sudbury sediments revisited: evaluating limnological recovery in a multiple stressor environment. Water Air Soil Pollut. 210: 317-333.
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 zooplankton diversity – contrasting effects of chemical and thermal variability. Ecology Letters 13: 453-463.
Helmus, M.R., W. Keller , M.J. Paterson, N.D. Yan, C.H. Cannon, and J.A. Rusak. 2010. Communities contain closely related communities during ecosystem disturbance. Ecology Letters 13: 162-174.
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. 2008. Book review: Acid rain in the Adirondacks an environmental history. Environ. Rev. 16: 1-2.
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.
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.
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.
Tanentzap, A.J., N.D. Yan, W. Keller, R. Girard, J. Heneberry, J.M. Gunn, D.P. Hamilton, and P.A. Taylor. 2008. 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.