Jane, S. F., G. J. A. Hansen, B. M. Kraemer, P. R. Leavitt, J. L. Mincer, R. L. North, R. M. Pilla, J. T. Stetler, C. E. Williamson, R. I. Woolway, L. Arvola, S. Chandra, C. L. DeGasperi, L. Diemer, J. Dunalska, O. Erina, G. Flaim, H.-P. Grossart, K. D. Hambright, C. Hein, J. Hejzlar, L. L. Janus, J.-P. Jenny, J. R. Jones, L. B. Knoll, B. Leoni, E. Mackay, S.-I. S. Matsuzaki, C. McBride, D. C. Müller-Navarra, A. M. Paterson, D. Pierson, M. Rogora, J. A. Rusak, S. Sadro, E. Saulnier-Talbot, M. Schmid, R. Sommaruga, W. Thiery, P. Verburg, K. C. Weathers, G. A. Weyhenmeyer, K. Yokota and K. C. Rose. 2021. Widespread deoxygenation of temperate lakes. Nature 594(7861): 66-70.

Scordo, F., S. Chandra, E. Suenaga, S. Kelson, J. Culpepper, L. Scaff, F. Tromboni, T. Caldwell, C. Seitz, J. Fiorenza, C. Williamson, S. Sadro, K. Rose, S, Poulson.  Smoke from regional wildfires alters lake ecology.  Scientific Reports 11:10922.  DOI: 10.1038/S41598-021-89926-6

Pilla, R.M., E.M. Mette, C.E. Williamson, and others. 2021. Global data set of long-term summertime vertical temperature profiles in 153 lakes. Environmental Data Initiative. (link)

Williamson, C.E. 2021. Limnological data from nearly 400 lakes across the Americas and New Zealand with a focus on vertical profiles of temperature, UV radiation, and optical properties. Environmental Data Initiative. (link)

Dempsey, C. M. and others 2020. The relative importance of photodegradation and biodegradation of terrestrially derived dissolved organic carbon across four lakes of differing trophic status. Biogeosciences 17: 6327-6340.

Pilla, R. M. and others 2020. Deeper waters are changing less consistently than surface waters in a global analysis of 102 lakes. Sci. Rep. 10: 20514.

Berry, N. L., E. P. Overholt, T. J. Fisher, and C. E. Williamson. 2020. Dissolved organic matter protects mosquito larvae from damaging solar UV radiation. PLOS ONE 15: e0240261. DOI: 10.1371/journal.pone.0240261

Elser, J. J., Wu, C., González, A. L., Shain, D. H., Smith, H. J., Sommaruga, R., … & Yu, J. 2020. Key rules of life and the fading cryosphere: Impacts in alpine lakes and streams. Global Change Biology 26: 6644–6656.

Birrell, J. H., Shah, A. A., Hotaling, S., Giersch, J. J., Williamson, C. E., Jacobsen, D., & Woods, H. A. 2020. Insects in high‐elevation streams: Life in extreme environments imperiled by climate change. Global Change Biology 26: 6667–6684.

Olson MH, Fischer JM, Hayashi M, et al. 2020. Meteorological drivers of interannual variation in transparency of mountain lakes Arct Antarct Alp Res 52: 424-434. https://doi.org/10.1080/15230430.2020.1800972

Williamson CE, Overholt EP, Pilla RM, et al. 2020. Habitat-mediated responses of zooplankton to decreasing light in two temperate lakes undergoing long-term browning Front Environ Sci 8. https://doi.org/10.3389/fenvs.2020.00073 

Overholt, E.P., M.A. Duffy, M.P. Meeks, T.H. Leach, and C.E. Williamson. 2020. Light exposure decreases infectivity of the Daphnia parasite Pasteuria ramosa. Journal of Plankton Research doi:10.1093/plankt/fbz070.

Wilkins, K.W., E.P. Overholt, and C.E. Williamson. 2020. The effects of dissolved organic matter from a native and invasive plant species on juvenile Daphnia survival and growth. Journal of Plankton Research 42: 453-456; doi:10.1093/plankt/fbaa027.

Williamson, C.E. 2020. Lake management in a browning world: Beyond the holy grail of nutrients. Invited lead paper for a special issue of LakeLine, the magazine of the North American Lake Management Society. LakeLine 40(1): 6-10.  https://www.nalms.org/product/lakeline-40-1-lake-browning/

Bernhard, G.H., Neale, R.E., Barnes, P.W., Neale, P.J., Zepp, R.G., Wilson, S.R., Andrady, A.L., Bais, A.F., McKenzie, R.L., Aucamp, P.J., Young, P.J., Liley, B., Lucas, R.M., Yazar, S., Rhodes, L.E., Byrne, S.N., Hollestein, L.M., Olsen, C.M., Young, A.R., Robson, T.M., Bornman, J.F., Jansen, M.A.K., Robinson, S.A., Ballaré, C.L., Williamson, C.E., Rose, K.C., Banaszak, A.T., Häder, D,-P., Hylander, S., Wängberg, S.-Å., Austin, A.T., Hou, W.-C., Paul, N.D., Madronich, S., Sulzberger, B., Solomon, K.R., Li, H., Schikowski, T., Longstreth, J.D., Pandey, K.K., Heikkilä, A.M., White, C.C. 2020. Environmental effects of stratospheric ozone depletion, UV radiation and interactions with climate change: UNEP Environmental Effects Assessment Panel, Update 2019. Photochemical & Photobiological Sciences. 19, 542 – 584; DOI: 10.1039/D0PP90011G.


Barnes, P. W., C. E. Williamson, R. M. Lucas, S. A. Robinson, S. Madronich, N. D. Paul, J. F. Bornman, A. F. Bais, B. Sulzberger, S. R. Wilson, A. L. Andrady, R. L. McKenzie, P. J. Neale, A. T. Austin, G. H. Bernhard, K. R. Solomon, R. E. Neale, P. J. Young, M. Norval, L. E. Rhodes, S. Hylander, K. C. Rose, J. Longstreth, P. J. Aucamp, C. L. Ballare, R. M. Cory, S. D. Flint, F. R. de Gruijl, D. P. Hader, A. M. Heikkila, M. A. K. Jansen, K. K. Pandey, T. M. Robson, C. A. Sinclair, S. A. Wangberg, R. C. Worrest, S. Yazar, A. R. Young, and R. G. Zepp. 2019. Ozone depletion, ultraviolet radiation, climate change and prospects for a sustainable future. Nature Sustainability 2:569-579.

Williamson, C.E. 2019. Three decades of limnological data from lakes in the Pocono Mountains region, Pennsylvania, USA, 1988-2018. Environmental Data Initiative (EDI).  https://doi.org/10.6073/pasta/834c813f123c8faf3d59477e54bfc3ce.

Williamson, C. E., Neale, P. J., Hylander, S., Rose, K. C., Figueroa, F. L., Robinson, S. A., Häder, D. P., Wangberg, S. A., Worrest, R. C. 2019. The interactive effects of stratospheric ozone depletion, UV radiation, and climate change on aquatic ecosystems. Photochemical and Photobiological Sciences, 18(3), 717-746. doi:10.1039/c8pp90062k

Williamson, C.E., P. J. Neale, S. Hylander, K. C. Rose, F. L. Figueroa, S. Robinson, D.-P. Häder, S.-Å. Wängberg and R. C. Worrest. 2019. The interactive effects of stratospheric ozone depletion, UV radiation, and climate change on aquatic ecosystems. Quadrennial Assessment on the Environmental Effects and Interactions of Stratospheric Ozone Depletion, UV Radiation, and Climate Change: Contributions of the Montreal Protocol to a Sustainable Earth. Report to the United Nations Environment Programme (UNEP EEAP).

P.W. Barnes, C.E. Williamson, R.M. Lucas, S. Madronich, S.A. Robinson, N.D. Paul (Lead Authors), J.F. Bornman, A.F. Bais, B. Sulzberger, S.R. Wilson, A.L. Andrady, P.J. Neale, A.T. Austin, G. Bernhard, R.L. McKenzie, K.R. Solomon, R.E. Neale, P.J. Young, M. Norval, L.E. Rhodes, S. Hylander, K.C. Rose, J. Longstreth, P.J. Aucamp, C.L. Ballaré, R.M. Cory, S.D. Flint, F.R. de Gruijl, D.-P. Häder, A.M. Heikkilä, M.A.K. Jansen, K.K. Pandey, T.M. Robson, C.A. Sinclair, S-Å. Wängberg, R.C. Worrest, S. Yazar, A.R. Young, R.G. Zepp. 2018. Executive Summary, Environmental Effects Assessment Panel. Quadrennial Assessment on the Environmental Effects and Interactions of Stratospheric Ozone Depletion, UV Radiation, and Climate Change: Contributions of the Montreal Protocol to a Sustainable Earth. Report to the United Nations Environment Programme. Published in 2019.

Williamson, C. E., & Overholt, E. P. 2019. Effects of a changing climate on freshwater and marine zooplankton. In D. P. Häder & K. Gao (Eds.), Aquatic Ecosystems in a Changing Climate (pp. 174-198). New York: CRC Press, Taylor & Francis.

Knoll, L.B, C.E. Williamson, R. M. Pilla*, T. H. Leach*, and J. A. Brentrup*, and T. J. Fisher. 2018. Browning-related oxygen depletion in an oligotrophic lake. Inland Waters 8:255-263. DOI: 10.1080/20442041.2018.1452355.

Pilla*, R. M., Williamson, C. E., Zhang, J., Smyth, R. L., Lenters, J. D., Brentrup*, J. A., Knoll, L. B., & Fisher, T. J. 2018. Browning-related decreases in water transparency lead to long-term increases in surface water temperature and thermal stratification in two small lakes. Journal of Geophysical Research: Biogeosciences, 123, 1651-1665.

Olson, M.H., J.M. Fischer, C.E. Williamson, E.P. Overholt, and N. Theodore. 2018. Landscape-scale regulators of water transparency in mountain lakes: implications of projected glacial loss. Can. J. Fish. Aquat. Sci. DOI: 10.1139/cjfas-2017-0215.

A.F. Bais, R.M. Lucas, J.F. Bornman, C. E. Williamson, B. Sulzberger, A.T. Austin, S.R. Wilson, A.L. Andrady, G. Bernhard, R.L. McKenzie, P.J. Aucamp, S. Madronich, R.E. Neale, S. Yazar, A.R. Young, F.R. de Gruijl, M. Norval, Y. Takizawa, P. W. Barnes, T.M. Robson, S.A. Robinson, C. L. Ballare, S.D. Flint, P.J. Neale, S. Hylander, K.C. Rose, S-A Wangberg, D.-P. Hader, R.C. Worrest, R G. Zepp, N.D. Paul, R.M. Cory, K.R. Solomon, J. Longstreth, K.K. Pandey, H.H. Redhwi, A.Torikai and A.M. Heikkila. 2018. Environmental effects of ozone depletion, UV radiation and interactions with climate change: UNEP Environmental Effects Assessment Panel, Update 2017. Photochem. Photobiol. Sci. 17:127-179; DOI: 10.1039/c7pp90043k.

Williamson, C.E., S. Madronich, A. Lal, R.G. Zepp, R.M. Lucas, E.P. Overholt, K.C. Rose, S.G. Schladow, and J. Lee-Taylor. 2017. Climate change-induced increases in precipitation are reducing the potential for solar ultraviolet radiation to inactivate pathogens in surface waters. Scientific Reports 7: 13033, doi:10.1038/s41598-017-13392-2.

Richardson, D., S. Melles, R. Pilla, A. Hetherington, L. Knoll, C. Williamson, B. Kraemer, J. Jackson, E. Long, K. Moore, L. Rudstam, J. Rusak, J. Saros, S. Sharma, K. Strock, K. Weathers, and C. Wigdahl-Perry. 2017. Transparency, geomorphology and mixing regime explain variability in trends in lake temperature and stratification across northeastern North America (1975-2014). Water 9: 442.

Kissman, C.E.H., C.E. Williamson, K.C. Rose*, and J.E. Saros. 2016. Nutrients associated with terrestrial dissolved organic matter drive changes in zooplankton: phytoplankton biomass ratios in an alpine lake. Freshwater Biology doi:10.1111/fwb.12847.

Brentrup*, J.A., C.E. Williamson, W. Colom-Montero, W. Eckert, E. de Eyto, H.-P. Grossart, Y. Huot, P.D.F. Isles, L.B. Knoll, T.H. Leach, C.G. McBride, D. Pierson, F. Pomati, J.S. Read, K.C. Rose, N.R. Samal, P.A. Staehr, and L.A. Winslow. 2016. The potential of high-frequency profiling to assess vertical and seasonal patterns of phytoplankton dynamics in lakes: an extension of the Plankton Ecology Group (PEG) model. Inland Waters 6: 565-580; DOI: 10.5268/IW-6.4.890.

Connelly*, S.J. J.A. Stoeckel*, R.A. Gitzen, C.E. Williamson, and M.J. Gonzalez. 2016. Effect of clonal selection on Dahnia tolerance to dark experimental conditions. PLoS ONE 11(7): e0159628. doi:10.1371/journal.pone.0159628.

Overholt, E.P., K.C. Rose*, C. E. Williamson, J. Fischer, and N. Cabrol. 2016. Behavioral responses of freshwater calanoid copepods to the presence of ultraviolet radiation: avoidance and attraction. Journal of Plankton Research doi: 10.1093/plankt/fbv113. (“Featured Article”)

Urmy, S.S., C.E. Williamson, T.H. Leach, S.G. Schladow, E.P. Overholt, and J.D. Warren. 2016. Vertical redistribution of zooplankton in an oligotrophic lake associated with reduction in ultraviolet radiation by wildfire smoke. Geophys. Res. Lett. 43: 3746-3753, doi:10.1002/2016GL068533.

Warren, J.D., T. Leach, and C.E. Williamson. 2016. Measuring the distribution, abundance, and biovolume of zooplankton in an oligotrophic freshwater lake with a 710 kHz scientific echosounder. Limnol. Oceanogr. Methods doi: 10.1002/lom3.10084.

Williamson, C. E., E. P. Overholt, J. A. Brentrup, R. M. Pilla, T. H. Leach, S. G. Schladow, J. D. Warren, S. S. Urmy, S. Sadro, S. Chandra, and P. J. Neale. 2016. Sentinel responses to droughts, wildfires, and floods: effects of UV radiation on lakes and their ecosystem services. Front. Ecol. Environ. 14: 102-109, doi:10.1002/fee.1228.

Andrady, A., P. J. Aucamp, A. Austin, A. Bais, C. L. Ballare, P. W. Barnes, G. Bernhard, L. O. Bjorn, J. F. Bornman, D. J. Erickson, F. R. De Gruijl, D.-P. Hader, M. Ilyas, J. Longstreth, R. Lucas, S. Madronich, R. McKenzie, R. Neale, M. Norval, N. Paul, K. Pandey, H. H. Redhwi, S. Robinson, K. Rose, M. Shao, K. R. Solomon, B. Sulzberger, Y. Takizawa, A. Torikai, K. Tourpali, S.-A. Wangberg, C. E. Williamson, S. R. Wilson, R. C. Worrest, A. Young, and R. G. Zepp. (Contributing authors are in alphabetical order.) 2016. Environmental effects of ozone depletion and its interactions with climate change: Progress Report, 2015. Photochemical and Photobiological Sciences 15: 141-174.

Rose, K.C*, C.E. Williamson, C.E.H. Kissman, and J.E. Saros. 2015. Does allochthony in lakes change across an elevation gradient? Ecology 96: 3281-3291.

Sharma, S., D. Gray, J. Read, C. O’Reilly, P. Schneider, A. Qudrat, C. Gries, S. Stefanoff, S.E. Hampton, S. Hook, J.D. Lenters, D. Livingstone, P. McIntyre, R. Adrian, M.G. Allan, O. Anneville, L. Arvola, J. Austin, J. Bailey, J. Baron, J. Brookes, Y. Chen, R. Daly, M. Dokulil, B. Dong, K. Ewing, E. de Eyto, D. Hamilton, K. Havens, S. Haydon, H. Hetzenauer, J. Heneberry, A.L. Hetherington, S.N. Higgins, E. Hixson, , L.R. Izmest’eva, B. Jones, K. Kangur, P. Kasprzak, O. Küster, B.M. Kraemer, M. Kumagai, E. Kuusisto, G. Leshkevich, L. May, S. MacIntyre, D. Mueller-Navara, M. Naumenko, P. Noges, T. Noges, P. Niederhauser, R. North, A. Paterson , P-D. Plisnier, A. Rigosi, A. Rimmer, M. Rogora, L. Rudstam, J.A. Rusak, N. Salmaso, N.R. Samal, D.E. Schindler, G. Schladow, S.R. Schmidt, T. Schultz, E.A. Silow, D. Straile, K. Teubner, P. Verburg, A. Voutilainen, A. Watkinson, G.A. Weyhenmeyer, C.E. Williamson, and K.H. Woo. 2015. A global database of lake surface temperatures collected by in situ and satellite methods from 1985-2009. Nature Scientific Data 2: 150008; DOI: 10.1038/sdata.2015.8.

O’Reilly, C. M., S. Sharma, D.K. Gray, S.E. Hampton, J.S. Read, R.J. Rowley, P. Schneider, J.D. Lenters, P.B. McIntyre, B.M. Kraemer, G.A. Weyhenmeyer, D. Straile, B. Dong, R. Adrian, M.G. Allan, O. Anneville, L. Arvola, J. Austin, J.L. Bailey, J.S. Baron, J.D. Brookes, E. de Eyto, M.T. Dokulil, D.P. Hamilton, K. Havens, A.L. Hetherington, S.N. Higgins, S. Hook, L.R. Izmest’eva, K.D. Johnk, K. Kangur, P. Kasprzak, M. Kumagai, E. Kuusisto, G. Leshkevich, D. Livingstone, S. MacIntyre, L. May, J.M. Melack, D.C. Mueller-Navarra, M. Naumenko, P. Noges, T. Noges, R.P. North, P.-D. Plisnier, A. Rigosi, A. Rimmer, M. Rogora, L.G. Rudstam, J.A. Rusak, N. Salmaso, N.R. Samal, D.E. Schindler, S.G. Schladow, M. Schmid, S.R. Schmidt, E. Silow, M.E. Soylu, K. Teubner, P. Verburg, A. Voutilainen, A. Watkinson, C.E. Williamson, G. Zhang.(Coauthors are in alphabetical order after first 13). 2015. Rapid and highly variable warming of lake surface waters around the globe. Geophysical Research Letters 48 DOI:10.1002/2015GL066235. PDF

Williamson, C. E., E. P. Overholt, R. M. Pilla**, T. H. Leach**, J. A. Brentrup**, L. B. Knoll, E. M. Mette, R. E. Moeller. 2015. Ecological consequences of long-term browning in lakes. Scientific Reports. DOI: 10.1038/srep18666. PDF

Sanders, R. W., S. L. Cooke, J. M. Fischer, S. B. Fey, A. W. Heinze, W. H. Jeffrey, A. L. Macaluso, R. E. Moeller, D. P. Morris, P. J. Neale, M. H. Olson, J. D. Pakulski, J. A. Porter, D. M. Schoener, and C. E. Williamson. 2015. Shifts in microbial food web structure and productivity after additions of naturally occurring dissolved organic matter: Results from large-scale lacustrine mesocosms. Limnology and Oceanography.

Cooke, S. L., J. M. Fischer, K. Kessler, C. E. Williamson, R. W. Sanders, D. P. Morris, J. A. Porter, W. H. Jeffrey, S. DeVaul Princiotta, and J. D. Pakulski. 2015. Direct and indirect effects of additions of chromophoric dissolved organic matter on zooplankton during large-scale mesocosm experiments in an oligotrophic lake. Freshwater Biology 60:2362-2378.

Leach, T. H., C. E. Williamson, N. Theodore*, J. M. Fischer. 2015. The role of ultraviolet radiation in the diel vertical migration of zooplankton: an experimental test of the transparency-regulator hypothesis. Journal of Plankton Research 37(5):886-896.

Fischer, J. M., M. H. Olson, N. Theodore*, C. E. Williamson, K. C. Rose, and J. Hwang. 2015. Diel vertical migration of copepods in mountain lakes: the changing role of ultraviolet radiation across a transparency gradient. . Limnology and Oceanography 60:252-262.

Andrady, A., P. J. Aucamp, A. Austin, A. F. Bais, C. L. Ballare, P. W. Barnes, G. H. Bernhard, J. F. Bornman, M. M. Caldwell, F. R. De Gruijl, D. J. Erickson Iii, S. D. Flint, K. Gao, P. Gies, D.-P. Hader, M. Ilyas, J. Longstreth, R. Lucas, S. Madronich, R. McKenzie, R. Neale, M. Norval, K. K. Pandy, N. D. Paul, M. Rautio, H. H. Redhwi, S. A. Robinson, K. Rose, M. Shao, R. P. Sinha, K. R. Solomon, B. Sulzberger, Y. Takizawa, X. Tang, A. Torikai, K. Tourpali, J. C. van der Leun, C. E. Williamson, S.-A. Wangberg, S. R. Wilson, R. C. Worrest, A. R. Young, and R. G. Zepp. 2015. Environmental effects of ozone depletion and its interactions with climate change: 2014 assessment : Executive summary. Photochem. Photobiol. Sci. 14:14-18.

Hader, D.-P., C. E. Williamson, S.-A. Wangberg, M. Rautio, K. C. Rose, K. Gao, E. W. Helbling, R. P. Sinha, and R. Worrest. 2015. Effects of UV radiation on aquatic ecosystems and interactions with other environmental factors. Photochem. Photobiol. Sci. 14:108-126.

Rose, K. C., D. P. Hamilton, C. E. Williamson, C. G. McBride, J. M. Fischer, M. H. Olson, J. E. Saros, M. G. Allan, and N. Cabrol. 2014. Light attenuation characteristics of glacially-fed lakes. Journal of Geophysical Research: Biogeosciences 119:1446-1457.

Williamson, C. E., R. Zepp, R. Lucas, S. Madronich, A. T. Austin, C. L. Ballare, M. Norval, B. Sulzberger, A. Bais, R. McKenzie, S. Robinson, D.-P. Hader, N. D. Paul, J. F. Bornman. 2014. Solar ultraviolet radiation in a changing climate. Nature Climate Change 4: 434-441.

Williamson, C.E., J.A. Brentrup**, J. Zhang, W.H. Renwick, B.R. Hargreaves, L.B. Knoll, E.P. Overholt, and K.C. Rose. 2014. Lakes as sensors in the landscape: Optical metrics as scalable sentinel responses to climate change. Limnology and Oceanography 59: 840-850. PDF

Tucker, A., and C.E. Williamson. 2014. The invasion window for warmwater fish in clearwater lakes: the role of ultraviolet radiation and temperature. Diversity and Distributions 20: 181-192.

Davidson, C., C.E. Williamson, K. Vincent, S.M. Simonich, K.S. Yip, J-M. Hero, and K.M. Kriger. 2013. Anuran population declines occur on an elevational gradient in the Western Hemisphere. Herpetological Conservation and Biology 8: 503-518.

Grimm, N.B., F.S. Chapin, Bierwagen, B., P. Gonzalez, P.M. Groffman, Y. Luo, F. Melton, K. Nadelhoffer, A. Pairis, P. Raymond, J. Schimel, and C.E. Williamson. 2013. The Impacts of Climate Change on Ecosystem Structure and Function. Frontiers in Ecology and the Environment 11: 474-482; doi: 10.1890/120282. link

Leff, L.G., D. Bade, J. Scaffidi, C.E. Williamson and C. Woolverton. 2013. Environmental Aquatic Resource Sensing: Basic Sciences, Business Education, and Outreach. Journal of Contemporary Water Research and Education 150: 63-71.

Kissman, C.E.H., C.E. Williamson, K.C. Rose, and J.E. Saros. 2013. Response of phytoplankton in an alpine lake to inputs of dissolved organic matter through nutrient enrichment and trophic forcing. Limnology and Oceanography 58: 867-880. PDF

Tucker**, A.J., C.E. Williamson, and J.T. Oris. 2012. Development and application of a UV attainment threshold for the prevention of warmwater aquatic invasive species. Biological Invasions 14:2331-2342. DOI 10.1007/s10530-012-0232-y.

Rose,**K.C., C.E. Williamson, J.M. Fischer, S.J. Connelly**, M. Olson, A.J. Tucker**, and D.A. Noe. 2012. The role of ultraviolet radiation and fish in regulating the vertical distribution of Daphnia. Limnology and Oceanography 57: 1867-1876. PDF

Saros, J.E, J.R. Stone, G.T. Pederson, K.E.H. Slemmons, T. Spanbauer, A. Schliep, D. Cahl, C.E. Williamson, and D.R. Engstrom. 2012. Climate-induced changes in lake ecosystem structure inferred from coupled neo- and paleo-ecological approaches. Ecology 93:2155-2164.

Gevertz**, A. K., A. J. Tucker**, A. M. Bowling**, C. E. Williamson, and J. T. Oris. 2012. Differential tolerance of native and nonnative fish exposed to ultraviolet radiation and fluoranthene in Lake Tahoe (California/Nevada), USA. Environmental Toxicology and Chemistry 31: 1-7.

Williamson, C. E., K. C. Rose**, A. J. Tucker**, J. S. Mack**, E. P. Overholt, J. Saros, J. M. Fischer, and J. C. Everhart. 2011. Water transparency to UV radiation as a sentinel response to climate change: Implications for aquatic foodwebs and invasive species. 10th Biennial Scientific Conference on the Greater Yellowstone Ecosystem.

Tucker, A. J.**, and C. E. Williamson. 2011. Lakes in a new light: Indirect effects of ultraviolet radiation. Freshwater Reviews 4: 115-134.

Overholt, E. P., S. H. Hall, C. E. Williamson, C. K. Meikle*, M. A. Duffy, and C. E. Caceres. 2012. Solar radiation decreases parasitism in Daphnia. Ecology Letters 15: 47-54.

United Nations Environment Programme, Environmental Effects Assessment Panel. 2011. Environmental effects of ozone depletion and its interactions with climate change: Progress report, 2011. Photochem. Photobiol. Sci., DOI: 10.1039/c1pp90033a

Fischer, J.M., M.H. Olson, C.E. Williamson, J.C. Everhart*, P.J. Hogan, J.A. Mack**, K.C. Rose**, J.E. Saros, J.R. Stone, R.D. Vinebrooke. 2011. Implications of climate change for Daphnia in alpine lakes: predictions from long-term dynamics, spatial distribution, and a short-term experiment. Hydobiologia 676: 263-277.

Williamson, C.E, J.M Fischer, S.M. Bollens, E.P. Overholt, and J.K. Breckenridge. 2011. Towards a more comprehensive theory of zooplankton diel vertical migration: Integrating UV radiation and water transparency into the biotic paradigm. Limnology and Oceanography 56:1603-1623.PDF

Hader, D.P., E.W. Helbling, C.E. Williamson, R.C. Worrest. 2011. Effects of UV radiation on aquatic ecosystems and interactions with climate change. Photochemical and Photobiological Sciences 10:242-260.

Staehr, P.A., D. Bade, M.C. Van de Bogert, G.R. Koch, C.E. Williamson, J.J. Cole, and T. Kratz. 2010. Lake metabolism and the diel oxygen technique: State of the science. Limnology and Oceanography Methods 8:628-644.

Williamson, C.E. and K.C. Rose**. 2010. When UV meets freshwater. Science 329: 637-639. Summary, Reprint and Full Text

Saros, J., K.C. Rose**, D.W. Clow, V.L. Stephens, A.B. Nurse, H.A. Arnett, J.R. Stone, C.E. Williamson, A.P. Wolfe. 2010. Melting alpine glaciers enrich high-elevation lakes with reactive nitrogen. Environ. Sci. Technol. PDF

Williamson, C. E., C. Salm**, S. L. Cooke**, and J. E. Saros. 2010. How do UV radiation, temperature, and zooplankton influence the dynamics of alpine phytoplankton communities? Hydrobiologia 648: 73-81.

Tucker**, A. J., C.E. Williamson, K.C. Rose**, J.T. Oris, S.J. Connelly, M.H. Olson, D.L. Mitchell. 2010. Ultraviolet radiation affects invasibility of lake ecosystems by warmwater fish. Ecology 91: 882-890. PDF


Leech**, D.M., W. Boeing**, S.L. Cooke**, C.E. Williamson, and L. Torres*. 2009. UV-enhanced fish predation and the differential migration of zooplankton in response to UV radiation and fish. Limnology and Oceanography 54:1152-1161. PDF

Rose**, K.C., C.E. Williamson, J.E. Saros, R. Sommaruga, and J.M. Fischer. 2009. Differences in UV transparency and thermal structure between alpine and subalpine lakes: implications for organisms. Photochemical & Photobiological Sciences, doi:10.1039/ B905616E.

Rose**, K.C., C.E. Williamson, G. Schladow, M. Winder, and J.T. Oris. 2009. Patterns of Spatial and Temporal Variability of Transparency in Lake Tahoe, CA/NV. J. Geophys. Res. Biogeosciences 114:G00D03, doi:10.1029/2008JG000816, 2009.

Williamson, C.E. and P.J. Neale. 2009. Ultraviolet Light. In: Gene E. Likens, (Editor) Encyclopedia of Inland Waters. Volume 2, pp. 663-642; Oxford: Elsevier.

Williamson, C.E. and J.R. Reid. Copepoda. 2009. In: Gene E. Likens, (Editor) Encyclopedia of Inland Waters. Volume 3, pp. 705-714; Oxford: Elsevier.

Williamson, C.E., J.E. Saros, W.F. Vincent, and J.P. Smol. 2009. Lakes and reservoirs as sentinels, integrators, and regulators of climate change. Limnology and Oceanography 54: 2273-2282. PDF

Winn**, N., C.E. Williamson, R. Abbitt, K.C. Rose**, W. Renwick, M. Henry, and J.E. Saros. 2009. Modeling dissolved organic carbon (DOC) in subalpine and alpine lakes with GIS and remote sensing. Landscape Ecology 24:807-816.

Williamson, C.E. and K.C. Rose. 2009. Ultraviolet Insights: Attempting to resolve enigmatic patterns in pelagic freshwaters- the historical context and a view to the future. Internat. Rev. Hydrobiol. 94: 129-142.

Williamson, C.E., J.E. Saros, and D.E. Schindler. 2009. Sentinels of Change. Science 323: 887-888. Summary and Full Text

Scott**, C.E, J.E. Saros, C.E. Williamson, S.C. Peters, and D.L. Mitchell. 2009. Effects of nutrients and dissolved organic matter on the response of phytoplankton to ultraviolet radiation: experimental comparison in spring versus summer. Hydrobiologia 619:155-166.

Williamson, C. E., and J. E. Saros. 2008. What do lakes and reservoirs tell us about climate change? EOS Transactions of the American Geophysical Union 89:546.

Peters, S.C., R. Lockwood*, C.E. Williamson, and J.E. Saros. 2008. Using elemental ratios of calcium and strontium to track calcium availability in the freshwater cladoceran Daphnia pulicaria. J. Geophys. Res. Biogeosciences DOI 10.1029/2008JG000.

Kessler, K., R.S. Lockwood*, C.E. Williamson, and J.E. Saros. 2008. Vertical distribution of zooplankton in subalpine and alpine lakes: Ultraviolet radiation, fish predation, and the transparency-gradient hypothesis. Limnology and Oceanography 53: 2374-2382. PDF

Williamson, C. E., W. Dodds, T. K. Kratz, and M. Palmer. 2008. Lakes and streams as sentinels of environmental change in terrestrial and atmospheric processes. Frontiers in Ecology and the Environment 6:247-254. PDF

Cooke**, S. L., C. E. Williamson, D. M. Leech**, W. J. Boeing** and L. Torres*. 2008. Effects of temperature and ultraviolet radiation on diel vertical migration of freshwater crustacean zooplankton. Can. J. Fish. Aquat. Sci. 65:1144-1152.

Williamson, C.E., H.J. De Lange, D. M. Leech**. 2007. Do zooplankton contribute to an ultraviolet radiation clear-water phase in lakes? Limnology and Oceanography 52: 662-667. PDF

Persaud**, A., R.E. Moeller, C.E. Williamson and C.W. Burns. 2007. Photoprotective compounds in weakly and strongly pigmented copepods and co-occurring cladocerans. Freshwater Biology 52: 2121-2133.

**Connelly, S. J.; E.A.** Wolyniak, C.E. Williamson, and K.L. Jellison.2007. Artificial UV-B and solar radiation reduce in vitro infectivity of the human pathogen Cryptosporidium parvum. Environ. Sci. Technol. 41: 7101-7106. PDF

Connelly**, S.J., E.A. **Wolyniak, K.L. *Dieter, C.E. Williamson, and K.L. Jellison. 2007. Impact of zooplankton grazing on the excystation, viability, and infectivity of the protozoan pathogens Cryptosporidium parvum and Giardia lamblia. Applied and Environmental Microbiology 73:7277-7282.

Belmont**, P., B.R. Hargreaves, D.P. Morris, and C.E. Williamson. 2007. Estimating attenuation of ultraviolet radiation in streams: Field and laboratory methods. Photochemistry and Photobiology 83: 1339-1347.

Fischer, J.M., J. Nicolai*, C.E. Williamson, A.D. Persaud**, and R.S. Lockwood*. 2006. Effects of ultraviolet radiation on diel vertical migration of crustacean zooplankton: an in situ mesocosm experiment. Hydrobiologia 563: 217-224.

Cooke**, S.L., C.E. Williamson, B.R. Hargreaves and D.P. Morris. 2006. Beneficial and detrimental interactive effects of dissolved organic matter and ultraviolet radiation on zooplankton in a transparent lake. Hydrobiologia 568: 15-28.

Cooke**, S.L., C.E. Williamson and J.E. Saros. 2006. How do temperature, dissolved organic matter, and nutrients influence the response of Leptodiaptomus ashlandi to UV radiation in a subalpine lake? Freshwater Biology 51: 1827-1837.

Cooke**, S.L. and C.E. Williamson. 2006. Positive effects of UV radiation on a calanoid copepod in a transparent lake: do competition, predation, or food availability play a role? Journal of Plankton Research. 28: 171-179. PDF

Palen**, W.J., C.E. Williamson, A.A. Clauser**, and D.E Schindler. 2005. Impact of UV-B exposure on amphibian embryos; linking species physiology and oviposition behaviour. Proceedings of the Royal Society B 272:1227-1234.

Saros, J.E., S.J. Interlandi, S. Doyle, T.J. Michel**, and C.E. Williamson. 2005. Are the deep chlorophyll maxima in alpine lakes primarily induced by nutrient availability, not UV avoidance? Arctic Antarctic and Alpine Research 37:557-563.

Leech**, D. M., A. T. Padeletti*, and C. E. Williamson. 2005. Zooplankton behavioral responses to solar UV radiation vary within and among lakes. Journal of Plankton Research 27:461-471. PDF

Doyle**, S., J. E. Saros, and C. E. Williamson. 2005. Interactive effects of temperature and nutrient limitation on the response of alpine phytoplankton growth to ultraviolet radiation. Limnology and Oceanography 50:1362-1367. PDF

Leech**, D.M., C.E. Williamson, R.E. Moeller, and B.R. Hargreaves. 2005. Effects of ultraviolet radiation on the seasonal vertical distribution of zooplankton: a database analysis. Archiv fur Hydrobologie: 162:445-464.

Moeller, R.E., S. Gilroy*, C.E. Williamson, G. Grad, and R. Sommaruga. 2005. Dietary acquisition of photoprotective compounds (mycosporine-like amino acids, carotenoids) and acclimation to ultraviolet radiation in a freshwater copepod. Limnology and Oceanography: 50: 427-439. PDF

Persaud**, A.D., and C.E. Williamson. 2005. Ultraviolet and temperature effects on planktonic rotifers and crustaceans in northern temperate lakes. Freshwater Biology 50: 467-476.

Huff**, D.D., G. Grad, and C.E. Williamson. 2004. Environmental constraints on spawning depth of yellow perch: The roles of low temperature and high solar ultraviolet radiation. Transactions of the American Fisheries Society 133:718-726 .

Boeing**, W.J., D.M. Leech**, C.E. Williamson, S. Cooke** , and L. Torres*. 2004. Damaging UV radiation and invertebrate predation: conflicting selective pressures for zooplankton vertical distribution in the water column of low DOC lakes. Oecologia 138: 603-612.

MacFadyen**, E.J., C.E. Williamson, G. Grad, M. Lowery, W.H. Jeffrey, and D.L. Mitchell. 2004. Molecular response to climate change: Temperature dependence of UVR-induced DNA damage and repair in the freshwater crustacean Daphnia pulicaria. Global Change Biology 10:408-416.

Grad, G., B.J. Burnett*, and C.E. Williamson. 2003. UV damage and photoreactivation: timing and age are everything. Photochemistry and Photobiology 78:225-227.

Williamson, C.E., and H.E. Zagarese. 2003. UV effects on aquatic ecosystems: A changing climate perspective. Pages 547-567 in “UV effects in aquatic organisms and ecosystems” E.W. Helbling and H.E. Zagarese (eds.); Book in the Comprehensive Series in Photosciences, Donat-P. Hader and Giulio Jori (Series Editors).

De Lange, H. J., D. P. Morris, and C. E. Williamson. 2003. Solar ultraviolet photodegradation of DOC may stimulate freshwater food webs. J. Plankton Research 25:111-117. PDF

Williamson, C.E., G. Grad, S. Gilroy*, H.J. De Lange, and D. M. Karapelou*. 2002. Temperature dependent ultraviolet responses in zooplankton: Implications of climate change. Limnology and Oceanography 47: 1844-1848. PDF

Williamson, C. E., P. J. Neale, G. Grad, H. J. De Lange, and B.R. Hargreaves. 2001. Beneficial and detrimental effects of UV on aquatic organisms: implications of spectral variation. Ecol. Applic. 11: 1843-1857. PDF

Zagarese, H.E., and C.E. Williamson. 2001. The implications of solar UV radiation for fish and fisheries. Fish and Fisheries 2: 250-260.

Williamson, C. E., O. G. Olson**, S. E. Lott*, N. D. Walker*, D. R. Engstrom, and B. R. Hargreaves. 2001. Ultraviolet radiation and zooplankton community structure following deglaciation in Glacier Bay, Alaska. Ecology 82: 1748-1760. PDF

Williamson, C. E., and J. W. Reid. 2001. Copepoda. In: Thorp, J. H. and A. Covich. Ecology and Classification of North American Freshwater Invertebrates. Chapter 22. pp. 915-954.

Leech**, D. M., and C. E. Williamson. 2001. In situ exposure to UV radiation alters the depth distribution of Daphnia. Limnology and Oceanography 46: 416-420. PDF

Grad, G., C.E. Williamson, and D. Karapelou*. 2001. Zooplankton survival and reproduction responses to damaging UV radiation: A test of reciprocity and photoenzymatic repair. Limnology and Oceanography 46: 584-591. PDF

Schulze, P. C., H. E. Zagarese, and C. E. Williamson. 2000. A simple in situ continuous culture system for zooplankton. Ver. Internat. Verein. Limnol. 27:1915-1918.

Leech**, D. M., and C. E. Williamson. 2000. Is tolerance to UV radiation in zooplankton related to body size, taxon, or lake transparency? Ecological Applications 10: 1530-1540. PDF

Zagarese, H. E., and C. E. Williamson. 2000. Impact of solar UV radiation on zooplankton and fish. Pages 279-309 in: De Mora, S. J., S. Demers, and M. Vernet (Eds.) The effects of UV radiation in the marine environment; Cambridge Environmental Chemistry Series 10, Cambridge University Press, New York, NY.


Gutiirrez-Rodrmguez**, C., and C. E. Williamson.1999. Influence of solar ultraviolet radiation on early life history stages of the bluegill sunfish, Lepomis macrochirus. Env. Biol. Fishes. 55: 307-319.

Frost, T.M., P.K. Montz, T.K. Kratz, T. Badillo, P.L. Brezonik, M.J. Gonzalez, R.G. Rada, C.J. Watras, K.E. Webster, J.G. Wiener, C.E. Williamson, D.P. Morris. 1999. Multiple stresses from a single agent: Diverse responses to the experimental acidification of Little Rock Lake, Wisconsin. Limnol.Oceanog 44: 784-794. PDF

Williamson, C. E., D. P. Morris, M. L. Pace, and O.G. Olson**. 1999. Dissolved organic carbon and nutrients as regulators of lake ecosystems: Resurrection of a more integrated paradigm. Limnol. Oceanogr. 44:795-803. PDF

Williamson, C.E., B.R. Hargreaves, P.S. Orr*, and P.A. Lovera*. 1999. Does UV radiation play a role in changes in predation and zooplankton community structure in acidified lakes? Limnol. Oceanogr. 44:774-783. PDF

Zagarese, H.E., C.E. Williamson, T.L. Vail**, O. Olson**, and C. Queimalinos**. 1997. Long-term exposure of Boeckella gibbosa (Copepoda, Calanoida) to “in situ” levels of solar UV-B radiation. Freshwat. Biol. 37:99-106

Williamson, C.E., S.L. Metzgar, P.A. Lovera*, and R.E. Moeller. 1997. Solar ultraviolet radiation and the spawning habitat of yellow perch, Perca flavescens. Ecol. Applic. 7:1017-1023. PDF

Zagarese, H.E., Feldman, M.**, and Williamson, C.E. 1997. UV-B-induced damage and photoreactivation in three species of Boeckella (Copepoda, Calanoida). J. Plankton Research 19:357-367. PDF

Williamson, C.E. 1996. Effects of UV radiation on freshwater ecosystems. Int. J. Env. Studies

Williamson, C.E., R.S. Stemberger, D.P Morris, T.M. Frost, and S. Paulsen. 1996. Ultraviolet radiation in North American lakes: Attenuation estimates from DOC measurements and implications for plankton communities . Limnol. Oceanogr. 41:1024-1034. PDF

Williamson, C.E., R.W. Sanders, R.E. Moeller, and P.L. Stutzman**. 1996. Utilization of sub-surface food resources by zooplankton: Implications for diel vertical migration theory. Limnol. Oceanogr. 41: 224-233. PDF

Sanders, R.W., C.E. Williamson, P.L. Stutzman**, R.E. Moeller, C.E. Goulden, and R.B. Aoki. 1996. Differential use of microbial food resources for reproduction by co-occurring zooplankton. Limnol. Oceanogr. 41:1295-1305. PDF

Morris, D.P., Zagarese, H.E., Williamson, C.E., Balseiro, E.G., Hargreaves, B.R., Modenutti, B., Moeller, R, and Queimalinos, C. 1995. The attenuation of solar UV radiation in lakes and the role of dissolved organic carbon. Limnol. Oceanogr. 40: 1381-1391. PDF

Schulze, P.C., C.E. Williamson, and B.R. Hargreaves. 1995. Evaluation of a remotely operated vehicle (ROV) as a tool for studying the distribution and abundance of zooplankton. J. Plankton Res. 17: 1233-1243.

Williamson, C.E. 1995. What role does UV-B radiation play in freshwater ecosystems? Limnol. Oceanogr. 40: 386-392. PDF

Schulze, P.C., H.E. Zagarese, and C.E. Williamson. 1995. Competition between crustacean zooplankton in continuous cultures. Limnol. Oceanogr. 40: 33-45. PDF

Zagarese, H.E., and C.E. Williamson. 1994. Modeling the impacts of UV-B radiation on ecological interactions in freshwater and marine ecosystems. In: Biggs, R.H., and M.E.B. Joyner. “Stratospheric ozone depletion/UV-B radiation in the biosphere. NATO ASI Series 1: Global Environmental Change 18: 315-328. Springer-Verlag, New York.

Zagarese, H.E., C.E. Williamson, M. Mislivets*, and P. Orr*. 1994. The vulnerability of Daphnia to UV-B radiation in the Northeastern United States. Arch. Hydrobiol. Beih. Ergebn. Limnol. 43: 207-216.

Siebeck, O., T. Vail**, C. Williamson, R. Vetter, D. Hessen, H. Zagarese, E. Little, E. Balseiro, B. Modenutti, J. Seva*, and A. Shumate*. (1994). Impact of UV-B radiation on zooplankton and fish in pelagic freshwater ecosystems. Arch. Hydrobiol. Beih. Ergebn. Limnol. 43: 101-114.

Williamson,C.E. and H.E. Zagarese. 1994. Opening remarks: The impact of UV-B radiation on pelagic freshwater ecosystems. Archiv Hydrobiol. Ergebn. Limnol. 43: IX-XI.

Williamson, C.E., and H.E. Zagarese (Eds.) 1994. Impact of UV-B radiation on pelagic freshwater ecosystems. Arch. Hydrobiol. Beih. Ergebn. Limnol. 43: 1-226.

Williamson, C.E., H.E. Zagarese, P.C. Schulze, B.R. Hargreaves, J. Seva*. 1994. Impact of short-term exposure to UV-B radiation on zooplankton communities in north temperate lakes. J. Plankton Res. 16: 205-218.

Williamson, C.E.. 1993. Linking predation risk models with behavioral mechanisms: Identifying population bottlenecks. Ecology 74: 320-331. PDF

Smith, S.L., R.R. Pieper, M.V. Moore, L.G. Rudstam, C.H. Greene, J.E. Zamon, C.N. Flagg, and C.E. Williamson. 1992. Acoustic techniques for the in situ observation of zooplankton. Arch. Hydrobiol. Beih. Ergebn. Limnol. 36: 23-43.

Sprules, W.G., P.C. Schulze, and C.E. Williamson, (eds.) 1992. Advanced techniques for in situ studies of zooplankton abundance, distribution, and behavior. Arch. Hydrobiol. Beih. Ergebn. Limnol. 36: 140 pp.

Schulze, P.C., C.E. Williamson, and W.G. Sprules. 1992. Concluding remarks: a comparison of acoustic devices, towed particle counters, and video systems. Arch. Hydrobiol. Beih. Ergebn. Limnol. 36: 135-140.

Williamson, C.E., P.C. Schulze, and W.G. Sprules. 1992. Opening remarks: The need for advanced techniques for in situ studies of zooplankton. Arch. Hydrobiol. Beih. Ergebn. Limnol. 36: V-VII.

Williamson, C.E. 1991. Copepoda. Chapter 21 in: Thorp, J.H., and A.P. Covich (eds.). Ecology and Classification of North American Freshwater Invertebrates; pp. 787-822. Academic Press Inc.

Williamson, C.E., and M.E. Stoeckel**. 1990. Estimating predation risk in zooplankton communities: the importance of vertical overlap. Hydrobiologia 198: 125-131.

Schoeneck**, L.J., C.E. Williamson, and M.E. Stoeckel**. 1990. Diel periodicity and selectivity in the feeding rate of the predatory copepod Mesocyclops edax. J. Plankton Res. 12: 29-40.


Williamson, C.E., M.E. Stoeckel**, and L.J. Schoeneck**. 1989. Predation risk and the structure of freshwater zooplankton communities. Oecologia 79: 76-82.

Williamson, C.E., and H.A. Vanderploeg. 1988. Predatory suspension-feeding in Diaptomus: Prey defenses and the avoidance of cannibalism. Bull. Mar. Sci. 43: 561-572.

Williamson, C.E., and N.M. Butler**. 1987. Temperature, food, and mate limitation of copepod reproductive rates: separating the effects of multiple hypotheses. J. Plankton Res. 9: 821-836.

Williamson, C.E. 1987. Predator-prey interactions between omnivorous diaptomid copepods and rotifers: the role of prey morphology and behavior. Limnol. Oceanogr. 32: 167-177. PDF

Williamson, C.E., and N.M. Butler**. 1986. Predation on rotifers by the suspension-feeding calanoid copepod Diaptomus pallidus. Limnol. Oceanogr. 31: 393-402. PDF

Williamson, C.E. 1986. The swimming and feeding behavior of Mesocyclops. Hydrobiologia 134: 11-19.

Williamson, C.E., N.M. Butler**, and L. Forcina*. 1985. Food limitation in naupliar and adult Diaptomus pallidus. Limnol. Oceanogr. 30: 1283-1290. PDF

Williamson**, C.E. 1984. Laboratory and field experiments on the feeding ecology of the freshwater cyclopoid copepod, Mesocyclops edax. Freshwat. Biol. 14: 575-585.

Williamson**, C.E. 1983. Behavioral interactions between a cyclopoid copepod predator and its prey. J. Plankton Res. 5: 701-711.

Williamson, C.E. 1983. Invertebrate predation on planktonic rotifers. Hydrobiologia 104: 385-396.

Gilbert, J.J. and C.E. Williamson. 1983. Sexual dimorphism in zooplankton (Copepoda, Cladocera, and Rotifera). Ann. Rev. Ecol. Syst. 14: 1-33.

Williamson**, C.E. and R.E. Magnien**. 1982. Diel vertical migration in Mesocyclops edax: Implications for predation rate estimates. J. Plankton Res. 4: 329-339.

Williamson**, C.E. 1981. Foraging behavior of a freshwater copepod: frequency changes in looping behavior at high and low prey densities. Oecologia 50: 332-336.

Williamson**, C.E. 1981. The feeding ecology of the freshwater cyclopoid copepod Mesocyclops edax. Ph.D. Dissertation, Dartmouth College.

Williamson**, C.E. 1980. The predatory behavior of Mesocyclops edax: Predator preferences, prey defenses, and starvation-induced changes. Limnol. Oceanogr. 25: 903-909. PDF

Williamson**, C.E., and J.J. Gilbert. 1980. Variation among zooplankton predators: The potential of Asplanchna, Mesocyclops, and Cyclops to attack, capture and eat various rotifer prey. In: Kerfoot, W.C. (ed.). Evolution and Ecology of Zooplankton Communities. Am. Soc. Limnol. Oceanogr. Spec. Symp. 3: 509-517. Univ. Press New England.

Frost, T.M., and C.E. Williamson**. 1980. In situ determination of the effect of symbiotic algae on the growth of the freshwater sponge Spongilla lacustris. Ecology 61: 1361-1370.

Williamson**, C.E. 1980. Phased cell division in natural and laboratory populations of marine planktonic diatoms. J. Exp. Mar. Biol. Ecol. 43: 271-279.


Williamson**, C.E. and G.L. Williamson**. 1979. Life-cycles of lotic populations of Spongilla lacustris and Eunapius fragilis (Porifera: Spongillidae). Freshwat. Biol. 9: 543-553.

Williamson**, C.E. 1979. An ultrastructural investigation of algal symbiosis in white and green Spongilla lacustris (L.) Porifera: Spongillidae). Trans. Amer. Micros. Soc. 98: 59-77.

Williamson**, C.E. 1979. Crayfish predation on freshwater sponges. Am. Midl. Nat. 101: 245-246.

Gilbert, J.J., and C.E. Williamson**. 1978. Predator-prey behavior and its effect on rotifer survival in associations of Mesocyclops edax, Asplanchna girodi, Polyarthra vulgaris, and Keratella cochlearis. Oecologia 37: 13-22.

Williamson**, C.E. 1977. Fluorescence identification of zoochlorellae: A rapid method for investigating alga-invertebrate symbioses. J. Exp. Zool. 202: 187-194.