CIRES | Center for Limnology

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Publications

Publications

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214

Detmer, T.M., W.M. Lewis, Jr. and J.H. McCutchan, Jr. 2016. Predator driven changes in prey size distribution stabilize secondary production in lacustrine food webs. Limnology and Oceanography. In press. DOI: 10.1002/lno.10446

211

Robertson, D. S., W. M. Lewis, Jr., P. M. Sheehan, and O. B. Toon. 2013. K-Pg extinction patterns in marine and freshwater environments: The impact winter model. Journal of Geophysical Research: Biogeosciences 118(3):1006-1014.

210

Robertson, D. S., W. M. Lewis, Jr., P. M. Sheehan, and O. B. Toon. 2013. K-Pg Extinction Patterns in Marine and Freshwater Environments: the Impact Winter Model. Journal of Geophysical Research: Biogeosciences118: 1-9.

208

Clow, D. W., C. Rhoades, J. Briggs, M. Caldwell, and W. M. Lewis, Jr. 2011. Responses of soil and water chemistry to mountain pine beetle induced tree mortality in Grand County, Colorado, USA. Appl. Geochem. 28: S174-S178.

207

Anthony, James L. and William M. Lewis, Jr. 2012. Low boundary layer responseand temperature dependance of nitrogen and phosphorus releases from oxic sediments of an oligotrophic lake. Aquatic Sciences 74: 611-617.

206

Lewis, W. M., Jr. 2011. Global primary production of lakes: 19th Baldi Memorial Lecture. Inland Waters 1: 1-28

205

Lewis, W. M., Jr., H. W. Paerl, and W. A. Wurtsbaugh. 2011. Rationale for Control of Anthropogenic Nitrogen and Phosphorus in Inland Waters. Environmental Science & Technology 45: 10300-10305.

204

Rhoades, C. C., J. H. McCutchan, Jr., L. A. Cooper, D. W. Clow, T. M. Detmer, J. S. Briggs, J. D. Stednick, and W. M. Lewis, Jr. 2010. Biogeochemistry of Beetle Kill: Explaining a Weak Nitrate Response. PNAS (in press).

203

Robertson, D. S., W. M. Lewis, Jr., P. M. Sheehan, and O. B. Toon. 2013. K/Pg Extinction: Re-evaluation of the Heat/Fire Hypothesis. Journal of Geophysical Research (in press).

202

Bradburn, M. J., W. M. Lewis, Jr., and J. H. McCutchan, Jr. 2012. Comparitive Adaptations of Aphanizomenon and Anabaena for N fixation under weak irradiance. Freshwater Biology 57: 1042-1049

201

Segura, C., J. H. McCutchan, Jr., W. M. Lewis, Jr., and J. Pitlick. 2010. The influence of channel bed disturbance on algal biomass in a Colorado Mountain stream. Ecohydrology 4: 411-421.

200

Gardner, E.M., D.M. McKnight, W.M. Lewis, Jr., and M.P. Miller. 2008. Nutrient enrichment on phytoplankton in and alpine lake, Colorado, U.S.A. Arctic, Antarctic, and Alpine Research 40: 55-64.

198

Lewis, W. M. Jr., and J. H. McCutchan, Jr.  2010.  Ecological responses to nutrients in streams and rivers of the Colorado mountains and foothillsFreshwater Biology 55: 1973-1983.

197

Higgins, T. M., J. H. McCutchan, Jr., and W. M. Lewis, Jr. 2010. Quantifying riverine sediment denitrification rates in situ with a novel, portable hyporheic chamber.Verh, Internat. Verein. Limnol. 30: 809-812.

196

Lewis, W. M. Jr.  2010.  Biogeochemistry of tropical lakes.  Verh. Internat. Verein. Limnol30: 1595-1603.<

195

Lewis, W. M. Jr.  2009.  The Ecological Niche in Aquatic Ecosystems.  Vol 1; Pages 411-415 in: G. E. Likens (ed.).  Encyclopedia of Inland Waters.  Elsevier, Oxford, UK.

194

Higgins, T.M., J.H. McCutchan, Jr., and W.M. Lewis, Jr. 2008. Nitrogen ebullition in a Colorado plains river. Biogeochemistry 89: 367-377.

193

Lewis, W. M. Jr.  2009.  Ecological Zonation in Lakes.  Vol 1; Pages 416-422 in: G. E. Likens (ed.).  Encyclopedia of Inland Waters.  Elsevier, Oxford, UK.

192

McCutchan, J.H. Jr. and W.M. Lewis, Jr. 2008. Spatial and temporal patterns of denitrification in an effluent-dominated plains river. Verh. Internat. Verein. Limnol. 30: 323-328.

191

McGrath, C.C. and W.M. Lewis, Jr. 2007. Competition and predation as mechanisms for displacement of greenback cutthroat by brook trout. Transactions of the American Fisheries Society 136: 1381-1392.

190

Lewis, W.M., Jr. and W.W. Wurtsbaugh. 2008. Control of lacustrine phytoplankton by nutrients: Erosion of the phosphorus paradigm. Internat. Rev. Hydrobiol.93: 446-465.

189

Lewis, W. M. Jr.  2009.  Chemical Fluxes and Dynamics in River and Stream Ecosystems.  Vol 2; Pages 16-22 in: G. E. Likens (ed.).  Encyclopedia of Inland Waters.  Elsevier, Oxford, UK.

188

Lewis, W. M. Jr.  2009.  Lakes as Ecosystems.  Vol 1; Pages 431-440 in: G. E. Likens (ed.).  Encyclopedia of Inland Waters.  Elsevier, Oxford, UK.

187

McCutchan, J.H. Jr., and W.M. Lewis, Jr. 2006. Groundwater flux and open channel estimation of stream metabolism: response to Hall and Tank. Limnol. Oceanogr.: Methods 4: 213-215.

186

Cronin, G., J.H. McCutchan, Jr., W.M. Lewis, Jr., and J. Pitlick. 2006. Use of Shields stress to reconstruct and forecast changes in river metabolism. Freshwater Biology 52: 1587-1601.

185

Lewis, W.M. Jr. 2005. Water-quality bugs and water-management buffalos. Colorado Water: 2005 (8): 11-12.

184

Lewis, W.M. Jr. 2005. Publishing Limnology, Now and Then. Limnology and Oceanography Bulletin 14:25-30.

183

Lewis, W.M. Jr. 2007. Physical and Chemical Features of Tropical Flowing Waters. Pages 1-24 in: D. Dudgeon (ed.). Tropical Stream Ecology. Elsevier-Academic Press, New York.

182

Lewis, W.M. Jr. 2004. Evaluating the importance of aquatic ecosystems. Arthur M. Sackler Colloquia of the National Academy of Sciences. Washington, DC.

181

Rodriguez, M.A., Winemiller, K.O., Lewis, W. M. Jr. and D.C.T. Baechle. 2007. The freshwater habitats, fishes, and fisheries of the Orinoco River basin. Aquatic Ecosystem Health and Management: 10: 140-152.

180

Cronin, G., W.M. Lewis, Jr., and M.A. Schiehser. 2006. The influence of freshwater macrophytes on the littoral ecosystem structure and function of a young Colorado reservoir. Aquatic Botany 85:37-43.

179

Lewis, W.M. Jr. 2009. The Klamath Basin as a Proving Ground for the Endangered Species Act. Chapter 9 in: P. Limrick, A. Cowell, and S. Collinge (editors). Remedies for a New West: Healing Landscapes, Histories, and Cultures. University of Arizona Press, Tuscon AZ.

178

Lewis, W.M. Jr., J.F. Saunders, III, and J.H. McCutchan, Jr. 2008. Application of a nutrient- saturation concept to the control of algal growth in lakes. Lake and Reservoir Management 24: 41-46

176

Kaushal, S.S., W.M. Lewis, Jr., and J.H. McCutchan, Jr. 2006. Land Use Change and Nitrogen Enrichment of a Rocky Mountain Watershed. Ecological Applications 16(1): 299-312.

175

Lewis, W.M. Jr. et al. 2004. NRC. Endangered and Threatened Fishes in the Klamath River Basin: Causes of Decline and Strategies for Recovery. National Academies Press, Washington, D.C.

174

Kaushal, S.S. and W.M. Lewis, Jr. 2005. Fate and transport of organic nitrogen in minimally disturbed montane streams of Colorado, USA. Biogeochemistry 74:303-321.

173

Saunders, J.F. III, M.S. Murphy, M.P. Clark, and W.M. Lewis, Jr. 2004. The influence of climate variation on the estimation of low flows used to protect water quality: a nationwide assessment. Journal of the American Water Resources Association 45: 1339-1349.

171

Ortiz-Zayas, J.R., W.M. Lewis, Jr., J.F. Saunders, III, J. H. McCutchan, Jr. and F. N. Scatena. 2005. Metabolism of a tropical rainforest stream. Journal of the North American Benthological Society 24(4): 769-783.

170

Lewis, W.M. Jr. (ed.). 2003. Water and Climate in the Western United States. University Press of Colorado. Boulder, CO. 286 p.

169

Lewis, W.M. Jr. 2003. Klamath basin fishes: Argument is no substitute for evidence. Fisheries 28: 20-25.

168

Pribyl, A.L., J.H. McCutchan, Jr., W.M. Lewis, Jr., and J.F. Saunders, III. 2005. Whole-system estimation of denitrification in a plains river: a comparison of two methods. Biogeochemistry 73:439-455.

167

Lewis, W.M. Jr., 2002. Biology and water science. Pp. 127-146. In: Carl Kisslinger (ed.) CIRES, 1967-2002: Pioneering a Successful Partnership. Cooperative Institute for Research in Environmental Sciences. University of Colorado. Boulder, CO. 183 pp.

165

Niyogi, D.K., D. M. McKnight, and W. M. Lewis, Jr. 2002. Fungal communities and biomass in mountain streams affected by mine drainage. Archiv fur Hydrobiologie 155: 255-271.

164

McCutchan, J.H. Jr., J.F. Saunders, III, A. L. Pribyl, and W.M. Lewis, Jr. 2003. Open-channel estimation of denitrification. Limnology and Oceanography Methods 1: 74-81

163

Lewis, W.M. Jr. 2002. Causes for the high frequency of nitrogen limitation in tropical lakes. Verh. Internat. Verein. Limnol. 28: 210-213.

162

Kaushal, S. and W.M. Lewis, Jr. 2003. Patterns in the chemical fractionation of organic nitrogen in Rocky Mountain streams. Ecosystems 6: 483-492.

161

McCutchan, J.H. Jr. and W.M. Lewis, Jr. 2002. Relative importance of carbon sources for macroinvertebrates in Rocky Mountain streams. Limnology and Oceanography 47: 742-752

160

Saunders, J. F. III and W. M. Lewis, Jr. 2003. Implications of climate variability for regulatory low flows in the South Platte Basin, Colorado. Journal of the American Water Resources Association 39: 33-45.

158

Niyogi, D.K., W.M. Lewis, Jr., and D.M. McKnight. 2003. Direct and indirect effects of mine drainage on bacterial processes in mountain streams. Journal of the North American Benthological Society 22: 276-291.

157

Niyogi, D.K., D. McKnight, and W.M. Lewis, Jr. 2002. Effects of mine drainage on breakdown of aspen litter in mountain streams. Water, Air, and Soil Pollution: Focus 2: 329-341.

156

Lewis, W. M. Jr. 2001. Wetlands Explained. Wetland Science, Policy, and Politics in America. Oxford University Press, New York, NY.

155

Niyogi, D.K., W.M. Lewis, Jr., and D.M. McKnight. 2002. Effects of stress from mine drainage on diversity, biomass, and function of primary producers in mountain streams. Ecosystems 5: 554-567.

154

Lewis, W.M., Jr. 2002. Yield of nitrogen from minimally disturbed watersheds of the United States. Biogeochemistry 57/58: 375-385.

153

Niyogi, D.K., W.M. Lewis, Jr., and D.M. McKnight. 2001. Litter breakdown in mountain streams affected by mine drainage: biotic mediation of abiotic controls. Ecological Applications 11: 506-516.

152

Lewis, W.M., Jr., S.K. Hamilton, M.A. Lasi, M. Rodriguez, and J.F. Saunders, III. 2001. Foodweb analysis of the Orinoco floodplain based on production estimates and stable isotope data. Journal of the North American Benthological Society 20: 241-254.

151

McCutchan, J.H. Jr., W.M. Lewis, Jr., C. Kendall, and C. C. McGrath. 2003. Variation in trophic shift for stable isotope ratios of carbon, sulfur, and nitrogen. Oikos 102: 378-390. See erratum: Oikos 111: 416.

150

Lewis, W.M. Jr. 2000. Basis for the protection and management of tropical lakes. Lakes and Reservoirs: Research and Management 5: 35-48.

149

Lewis, W.M. Jr., S.K. Hamilton, M.A. Lasi, M. Rodriguez, and J.F. Saunders, III. 2000. Ecological determinism on the Orinoco floodplain. Bioscience 50: 681-692.

148

McCutchan, J.H. Jr., J.F. Saunders, III, W.M. Lewis, Jr. and M. C. Hayden. 2002. Effects of groundwater flux on open-channel estimates of stream metabolism. Limnology and Oceanography 47: 321-324

147

Downing, J.A., M. McClain, R. Twilley, J.M. Melack, J. Elser, N.N. Rabalais, W.M. Lewis, Jr., R.E. Turner, J. Corredor, D. Soto, A. Yanez-Arancibia, R.W. Howarth. 1999. The impact of accelerating land-use change on the N-cycle of tropical aquatic ecosystems: current conditions and projected changes. Biogeochemistry 47: 109-148.

146

Niyogi, D.K., D.M. McKnight, and W.M. Lewis, Jr. 1999. Influences of water and substrate quality for periphyton in a montane stream affected by acid mine drainage. Limnology and Oceanography 44: 804-809.

145

Skaggs, R.L., M.L. Aquin, W.M. Lewis, Jr. and J.W. Birks. 1998. Detection of argon by penning ionization and competitive absorption using a sensitized photoionization detector. Analytical Chemistry 70: 3493-3497.

144

Lewis, W.M. Jr., J.M. Melack, W.H. McDowell, M. McClain, and J.E. Richey. 1999. Nitrogen yields from undisturbed watersheds in the Americas. Biogeochemistry 46: 149-162.

143

Lewis, W.M. Jr. 1998. Aquatic environments of the Americas: basis for rational use and management. Proceedings of the 4th International Congress on Environmental Issues 4: 250-257.

142

McCutchan, J.H. Jr., W.M. Lewis, Jr., and J.F. Saunders, III. 1998. Uncertainty in the estimation of stream metabolism from open-channel oxygen concentrations. Journal North American Benthological Soc. 17: 155-164

141

McCutchan, J.H. Jr. and W.M. Lewis, Jr. 2001. Seasonal variation in stable isotope ratios of stream algae. Verh. Internat. Verein. Limnol. 27: 3304-3307.

140

Vavilova, V.V. and W.M. Lewis, Jr. 1999. Temporal and altitudinal variations in the attached algae of mountain streams in Colorado. Hydrobiologia 390: 99-106.

139

Sjodin, A., W.M. Lewis, Jr., and J.F. Saunders, III. 1997. Denitrification as a component of the nitrogen budget for a large plains river. Biogeochemistry 39: 327-342.

138

Sjodin, A., W.M. Lewis, Jr., and J.F. Saunders, III. 2001. Analysis of groundwater exchange for a large plains river in Colorado (USA). Hydrological Processes 15: 609-620.

137

Lewis, W.M. Jr. et al (8 authors; National Research Council). 1996. River Resource Management in the Grand Canyon. National Academy Press, Washington, DC. 226 p.

136

Lewis, W.M. Jr. et al. (12 authors; National Research Council). 1995. Wetlands: Characteristics and Boundaries. National Academy Press, Washington, DC. 306 p.

135

Smith, L.K., W.M. Lewis, Jr., J.P. Chanton, G. Cronin, and S.K. Hamilton. 2000. Methane emissions from the Orinoco River floodplain, Venezuela. Biogeochemistry 51: 113-140.

134

Rodríguez, M.A. and W.M. Lewis, Jr. 1997. Structure of fish assemblages along environmental gradients in floodplain lakes of the Orinoco River. Ecological Monographs 67: 109-128.

132

Lewis, W.M. Jr. 1995. Limnology, as seen by limnologists. Water Resources Update 98: 4-8.

131

Arenz, R.F. Jr., W.M. Lewis, Jr., and J.F. Saunders, III. 1996. Determination of chlorophyll and dissolved organic carbon from reflectance data for Colorado reservoirs. International Journal of Remote Sensing 17: 1547-1566.

130

Friedman, J.M., W.R. Osterkamp, and W.M. Lewis, Jr. 1996. Channel narrowing and vegetation development following a Great Plains flood. Ecology 77: 2167-2181.

129

Friedman, J.M., W.R. Osterkamp, and W.M. Lewis, Jr. 1996. The role of vegetation and bedlevel fluctuations in the process of channel narrowing. Geomorphology 14: 341-351.

128

Lewis, W.M. Jr. and J.F. Saunders, III. 1995. Improvements in stream ammonia models by simultaneous computation of extremes in flow and water chemistry. Environmental Science and Technology 29: 1796-1801.

127

Lewis, W.M. Jr. 1996. Tropical lakes: how latitude makes a difference. Pp. 43-64 In: F. Schiemer and K.T. Boland (eds.). Perspectives in Tropical Limnology. SPB Academic Publishers, Amsterdam, the Netherlands.

126

Lewis, W.M. Jr. 1994. The ecological sciences and the public domain. University of Colorado Law Review 65: 279-292.

125

Friedman, J.M., M.L. Scott, and W.M. Lewis, Jr. 1995. Restoration of riparian forest using irrigation, artificial disturbance, and natural seedfall. Environmental Management 19: 547-557.

124

Lewis, W.M. et al. (9 authors). 1995. Challenges for limnology in North America: an assessment of the discipline in the 1990's. Bulletin of the American Society of Limnology and Oceanography 4:1-20.

122

Lewis, W.M. Jr. 1996. Defining the riparian zone: Lessons from the regulation of wetlands. Pp. 6-14 In: S.B. Laursen (ed.). At the Water=s Edge: The Science of Riparian Forestry. Proceedings from a conference held in Duluth, MN, June 19-20, 1995. U. of Minnesota Distribution Center, Duluth, MN.

121

Hamilton, S.K. and W.M. Lewis, Jr. 1992. Stable carbon and nitrogen isotopes in algae and detritus from the Orinoco River floodplain, Venezuela. Geochimica et Cosmochimica Acta 56: 4237-4246.

120

Smith, L.K. and W.M. Lewis, Jr. 1992. Seasonality of methane emissions from five lakes and associated wetlands of the Colorado Rockies. Global Biogeochemistry Cycles 6: 323-358.

119

Morris, D.P. and W.M. Lewis, Jr. 1992. Nutrient limitation of bacterioplankton growth in Lake Dillon, Colorado. Limnology and Oceanography 37: 1179-1192.

118

Hamilton, S.K., W.M. Lewis, Jr., and S. Sippel. 1992. Energy sources for aquatic animals in the Orinoco River floodplain: Evidence from stable isotopes. Oecologia 89: 324-330.

117

Rodríguez, M.A. and W.M. Lewis, Jr. 1994. Regulation and stability in of fish assemblages of neotropical floodplain lakes. Oecologia 99: 166-180.

116

Hamilton, S.K., J.M. Melack, M.F. Goodchild, and W.M. Lewis, Jr. 1991. Estimation of the fractal dimension of terrain from lake size distributions. Pp. 145-163 In: P.A. Carling and G.E. Petts (eds.). Lowland Floodplain Rivers: Geomorphological Perspectives. Wiley & Sons, Ltd.

115

Lewis, W.M. Jr., S.K. Hamilton, and J.F. Saunders, III. 1995 (2nd. Ed. 2004). Rivers of Northern South America. Pp. 219-256 in: C. Cushing and K. Cummins (eds.) Ecosystems of the World: Rivers. Elsevier, NY

114

Lewis, W.M. Jr., F.H. Weibezahn, J.F. Saunders, III, and S.K. Hamilton. 1990. The Orinoco River as an ecological system. Interciencia 15: 346-357.

113

Hamilton, S.K. and W.M. Lewis, Jr. 1990. Basin morphology in relation to chemical and ecological characteristics of lakes on the Orinoco River floodplain, Venezuela. Archiv fur Hydrobiologie 119: 393-425.

112

Lewis, W.M. Jr. 1991. Comparisons of phytoplankton biomass in temperate and tropical lakes. Limnology and Oceanography 35: 1838-1845.

111

Rodríguez, M.A. and W.M. Lewis, Jr. 1990. Diversity and species composition of fish communities of Orinoco floodplain lakes. National Geographic Research 6: 319-328

110

Hamilton, S.K. and W.M. Lewis, Jr. 1990. Physical characteristics of the fringing floodplain of the Orinoco River, Venezuela. Interciencia 15: 491-500.

109

Hamilton, S.K., S.J. Sippel, W.M. Lewis, Jr., and J.F. Saunders, III. 1990. Zooplankton abundance and evidence for its reduction by macrophyte mats in two Orinoco floodplain lakes. Journal of Plankton Research 12: 345-363.

108

Lewis, W.M. Jr. 1988. Uncertainty in pH and temperature corrections for ammonia toxicity. Journal of Water Pollution Control Federation 60: 1922-1929

107

Weibezahn, F., H. Alvarez, and W.M. Lewis, Jr. (eds.). 1990. The Orinoco River as an Ecosystem. Impresos Rubel, Caracas. 430 p.

106

Saunders, J.F. III and W.M. Lewis, Jr. 1989. Transport of major solutes and the relationship between solute concentrations and discharge in the Apure 8 River, Venezuela. Biogeochemistry 8: 101-113

105

Lewis, W.M. Jr. 1989. Further evidence for anomalous size scaling of respiration in phytoplankton. Journal of Phycology 25: 395-397.

104

Meade, R.H., F.H. Weibezahn, W.M. Lewis, Jr., and D.P. Hernandez. 1990. Suspended-sediment budget for the Orinoco River. Pp. 55-80 In: F. Weibezahn, H. Alvarez, and W.M. Lewis, Jr. (eds.). The Orinoco River as an Ecosystem. Impresos Rubel, Caracas. 430 p.

103

Unger, P.A. and W.M. Lewis, Jr. 1990. Population ecology of the pelagic fish, Xenomelaniris venezuelae (Atherinidae), in Lake Valencia. Ecology 72: 440-456.

102

Lewis, W.M. Jr. and J.F. Saunders, III. 1989. Concentration and transport of dissolved and suspended substances in the Orinoco River. Biogeochemistry 7: 203-240.

101

Rodríguez, M.A., S.E. Richardson, and W.M. Lewis, Jr. 1990. Nocturnal behavior and aspects of the ecology of a driftwood catfish, Entomocorus gameroi (Auchenipteridae). Biotropica 22: 435-438.

100

Saunders, J.F. III and W.M. Lewis, Jr. 1989. Zooplankton abundance in the lower Orinoco River, Venezuela. Limnology and Oceanography 34: 397-409.

099

Saunders, J.F. III and W.M. Lewis, Jr. 1988. Composition and seasonality of the zooplankton community of Lake Valencia, Venezuela. Journal of Plankton Research 10: 957-985.

098

Lewis, W.M. Jr. 1987. Tropical limnology. Annual Review of Ecology and Systematics 18: 159-184.

097

Twombly, S. and W.M. Lewis, Jr. 1989. Factors regulating cladoceran dynamics in a Venezuelan floodplain lake. Journal of Plankton Research 11: 317-333.

096B

Mitton, J.B. and W. M. Lewis, Jr. 1992. Response to Waples's comment on heterozygosity and life-history variation in bony fishes. Evolution 46: 576-577.

096A

Mitton, J.B. and W.M. Lewis, Jr. 1989. Relationships between genetic variability and life-history features of bony fishes. Evolution 47: 1712-1723

095

Saunders, J.F. III and W.M. Lewis, Jr. 1988. Transport of phosphorus, nitrogen, and carbon by the Apure River, Venezuela. Biogeochemistry 5: 323-342.

094

Lewis, W.M. Jr. and J.F. Saunders III. 1990. Chemistry and element transport of the Orinoco main stem and lower tributaries. Pp. 211-240 In: F. Weibezahn, H. Alvarez, and W.M. Lewis, Jr. (eds). The Orinoco River as an Ecosystem. Impresos Rubel, Caracas. 430 p.

093

Lewis, W.M. Jr., J.F. Saunders, III and R. Dufford. 1990. Suspended organisms and biological carbon flux along the lower Orinoco River. Pp. 269-300 In: F. Weibezahn, H. Alvarez, and W.M. Lewis, Jr. (eds). The Orinoco River as an Ecosystem. Impresos Rubel, Caracas. 430 p.

092

Morris, D.P. and W.M. Lewis, Jr. 1988. Phytoplankton nutrient limitation in Colorado mountain lakes. Freshwater Biology 20: 315-327.

091

Lewis, W. M. Jr. 1987. The cost of sex. P. 33-57 In: S. Stearns (ed.) The Evolution of Sex and its Consequences. Birkhauser Verlag.

090

Lewis, W.M. Jr. 1988. Primary production in the Orinoco River. Ecology 69: 679-692.

089

Twombly, S. and W.M. Lewis, Jr. 1987. Zooplankton abundance and species composition in Laguna la Orsinera, a Venezuelan floodplain lake. Archiv fur Hydrobiologie Supplement 79: 87-107.

088

Saunders, J.F. III and W.M. Lewis, Jr. 1988. Zooplankton abundance and transport in a tropical white-water river. Hydrobiologia 162: 147-155.

087

Saunders, J.F. III and W.M. Lewis, Jr. 1988. Dynamics and control mechanisms in a tropical zooplankton community (Lake Valencia, Venezuela). Ecological Monographs 48: 337-353.

086

Hamilton, S.K. and W.M. Lewis, Jr. 1987. Causes of seasonality in the chemistry of a lake on the Orinoco River floodplain, Venezuela. Limnology and Oceanography 32: 1277-1290.

085

Saunders, J.F. III and W.M. Lewis, Jr. 1988. Zooplankton abundance in the Caura River, Venezuela. Biotropica 20: 206-214.

084

Lewis, W.M. Jr., S.K. Hamilton, S. L. Jones, and D.D. Runnels. 1987. Major element chemistry, weathering and element yields for the Caura River drainage, Venezuela. Biogeochemistry 4: 159-181.

083

Lundberg, J.G., W.M. Lewis, Jr., J.F. Saunders, III, and F. Mago-Leccia. 1987. A major food web component in the Orinoco River channel: Evidence from planktivorous electric fishes. Science 237: 81-83.

082

Cressa, C. and W.M. Lewis, Jr. 1986. Ecological energetics of Chaoborus in a tropical lake. Oecologia 70: 326-331

081

Saunders, J.F. III and W.M. Lewis, Jr. 1986. A perspective on the use of cohort analysis to obtain demographic data for copepods. Limnology and Oceanography 32: 511-513.

079

Lewis, W.M. Jr. and D.P. Morris. 1986. Toxicity of nitrite to fish: a review. Transactions of the American Fisheries Society 115: 183-195.

078

Lewis, W.M. Jr. 1986. Nitrogen and phosphorus runoff losses from a nutrient-poor tropical moist forest. Ecology 67: 1275-1282.

077

Lewis, W.M. Jr., J.F. Saunders, III, F.H. Weibezahn, and S.N. Levine. 1986. Organic carbon in the Caura River, Venezuela. Limnology and Oceanography 31: 653-656.

076

Levine, S.N. and W.M. Lewis, Jr. 1986. A numerical model of nitrogen fixation and its application to Lake Valencia, Venezuela. Freshwater Biology 17: 265-274.

075

Lewis, W.M. Jr. 1986. Evolutionary interpretations of allelochemical interactions in phytoplankton algae. The American Naturalist 127: 184-194.

074

Lewis, W.M. Jr., T. Frost, and D. Morris. 1986. Studies of planktonic bacteria in Lake Valencia, Venezuela. Archiv fur Hydrobiologie 106: 289-305.

073

Levine, S.N. and W.M. Lewis, Jr. l985. The horizontal heterogeneity of nitrogen fixation in Lake Valencia, Venezuela. Limnology and Oceanography 30: 1240-1245.

072

Lewis, W.M. Jr. 1985. Protozoan abundances in the plankton of two tropical lakes. Archiv fur Hydrobiologie 104: 337-343.

071

Lewis, W.M. Jr. 1985. Nutrient scarcity as an evolutionary cause of haploidy. The American Naturalist 125: 692-701.

070

Lewis, W.M. Jr., M.C. Grant, and S.K. Hamilton. 1985. Evidence that filterable phosphorus is a significant atmospheric link in the phosphorus cycle. Oikos 45: 428-432.

069

Unger, P.A., W.M. Lewis, Jr., and D.H. McClearn. 1984. Nonvisual feeding in a visual planktivore, Xenomelaniris venezuelae. Oecologia 64: 280-283.

068

Lewis, W.M. Jr. 1986. Phytoplankton succession in Lake Valencia, Venezuela. Hydrobiologia 138: 189-203.

067

Lewis, W.M. Jr., J.F. Saunders, III, D.W. Crumpacker, Sr., and C. Brendecke. 1984. Eutrophication and Land Use: Lake Dillon, Colorado. Springer-Verlag, New York. 202 p.

066

Lewis, W.M. Jr., J.F. Saunders, III. 1984. Cross-sectional variation in the chemistry and suspended sediment load of the Orinoco River at Ciudad Bolivar. Acta Cientifica 35: 382-385.

065

Lewis, W.M. Jr., M.C. Grant, and J.F. Saunders, III. 1984. Chemical patterns of bulk atmospheric deposition in the State of Colorado. Water Resources Research 20: 1691-1704.

064

Lewis, W.M. Jr. and S.N. Levine. 1984. The light response of nitrogen fixation in Lake Valencia, Venezuela. Limnology and Oceanography 29: 894-900.

063

Levine, S.N. and W.M. Lewis, Jr. l984. Diel variation of nitrogen fixation in Lake Valencia, Venezuela. Limnology and Oceanography 29: 887-893.

062

Cressa, C. and W.M. Lewis, Jr. l984. Growth and development patterns in a tropical Chaoborus species and their ecological significance. Archiv fur Hydrobiologie 100: 21-28.

061

Unger, P.A. and W.M. Lewis, Jr. l983. Selective predation in a population of the planktivorous fish, Xenomelaniris venezuelae (Atherinidae). Ecology 64: 1136-1144.

060

Lewis, W.M. Jr. l984. A five-year record of the thermal and mixing properties of a tropical lake (Lake Valencia, Venezuela). Archiv fur Hydrobiologie 99: 340-346.

059

Lewis, W.M. Jr. l984. The diatom sex clock and its evolutionary significance. The American Naturalist 123: 73-80.

058

Lewis, W.M. Jr. l983. A revised classification of lakes based on mixing. Canadian Journal of Fisheries and Aquatic Science 40: 1779-1787.

057

Lewis, W.M. Jr. l983. Collection of airborne materials by a water surface. Limnology and Oceanography 28: 1242-1246.

056

Lewis, W.M. Jr. l983. Interruption of synthesis as a cost of sex in small organisms. The American Naturalist 121: 825-833.

055

Epp, R.W. and W.M. Lewis, Jr. l984. Cost and speed of locomotion for rotifers. Oecologia 61: 289-292.

054

Lewis, W.M. Jr. and F.H. Weibezahn. 1983. Phosphorus and nitrogen loading of Lake Valencia. Acta Cientifica 34: 345-349.

053

Lewis, W.M. Jr. 1983. Water budget of Lake Valencia, Venezuela. Acta Cientifica 34: 248-251.

052

Lewis, W.M. Jr. 1983. Interception of atmospheric fixed nitrogen as an adaptive advantage of scum formation in blue-green algae. Journal of Phycology 19: 534-536.

051

Bradbury, J.P., B. Leyden, M. Salgado-Labouriau, W.M. Lewis, Jr., C. Schubert, M.W. Binford, D.G. Frey, and D.R. Whitehead. 1981. Late quaternary environmental history of Lake Valencia, Venezuela. Science 214: 1299-1305

050

Lewis, W.M. Jr. l982. Vertical eddy diffusivities in a large tropical lake. Limnology and Oceanography 27: 161-163.

049

Epp, R.W. and W.M. Lewis, Jr. 1981. Photosynthesis in copepods. Science 214: 1349-1350

048

Lewis, W.M. Jr. and M.C. Grant. 1980. Effect of urban sources on acid precipitation in the western United States. Science 210: 1043.

047

Lewis, W.M. Jr. l983. Temperature, heat, and mixing in Lake Valencia, Venezuela. Limnology and Oceanography 28: 273-286

046

Lewis, W.M. Jr. 1982. Changes in pH and buffering capacity of lakes in the Colorado Rockies. Limnology and Oceanography 27: 167-172.

045

Lewis, W.M. Jr. and M.C. Grant. 198l. Effect of the May-June Mount St. Helens eruptions on precipitation chemistry in central Colorado. Atmospheric Environment 15: 1539-1542.

044

Lewis, W.M. Jr. and F.H. Weibezahn. 198l. The chemistry and phytoplankton of the Orinoco and Caroni rivers, Venezuela. Archiv fur Hydrobiologie 91: 521-528.

043

Epp, R.W. and W.M. Lewis, Jr. 1980. Metabolic uniformity over the environmental temperature range in Brachionus plicatilis (Rotifera). P. 145-147 In: H.J. Dumont and J. Green, (eds.). Proceedings of the Second International Rotifer Symposium. Dr. W. Junk, The Hague.

042

Epp, R.W. and W.M. Lewis, Jr. 1980. The nature and ecological significance of metabolic changes during the life history of copepods. Ecology 61: 259-264.

041

Lewis, W.M. Jr. and W. Riehl. 1982. Phytoplankton composition and morphology in Lake Valencia, Venezuela. Internationale Revue der gesamten Hydrobiologie 67: 297-322.

040

Lewis, W.M. Jr. and F.H. Weibezahn. 1981. Chemistry of a 7.5-meter sediment core from Lake Valencia, Venezuela. Limnology and Oceanography 26: 907-924.

039

Lewis, W.M. Jr. l98l. Precipitation chemistry and nutrient loading by precipitation in a tropical watershed. Water Resources Research 17: 169-181.

038

Lewis, W.M. Jr. and F.H. Weibezahn. 1982. Acid rain and major seasonal variation of hydrogen ion loading in a tropical watershed. Acta Cientifica 32: 236-238.

037

Lewis, W.M. Jr. and M.C. Grant. 1980. Relationship between snow cover and winter losses of dissolved substances from a mountain watershed. Arctic and Alpine Research 12: 11-17.

036

Lewis, W.M. Jr. and M.C. Grant. 1980. Relationships between stream discharge and yield of dissolved substances from a mountain watershed. Soil Science 128: 353-363.

035

Lewis, W.M. Jr. and M.C. Grant. 1980. Changes in the output of ions from a watershed as a result of the acidification of precipitation. Ecology 60: 1093-1097.

034

Grant, M.C. and W.M. Lewis, Jr. l982. Chemical loading rates from the precipitation in the Colorado Rockies. Tellus 34: 74-88.

033

Epp, R.W. and W.M. Lewis, Jr. 1979. Sexual dimorphism in Brachionus plicatilis (Rotifera): evolutionary and adaptive significance. Evolution 33: 919-928.

032

Epp, R.W. and W.M. Lewis, Jr. 1979. Metabolic responses to temperature change in the tropical freshwater copepod (Mesocyclops brasilianus) and their adaptive significance. Oecologia 43: 123-128.

031

Lewis, W.M. Jr. and M.C. Grant. 1980. Acid precipitation in the Western United States. Science 206: 176-177.

030

Infante, O., A. Infante, M. Marquez, W.M. Lewis, Jr., and F.H. Weibezahn. 1979. Conditions leading to mass mortality of fish and zooplankton in Lake Valencia, Venezuela. Acta Cientifica 30: 67-73.

029

Lewis, W.M. Jr. 1979. Zooplankton Community Analysis. Springer-Verlag, New York. 163 p.

028

Lewis, W.M. Jr. 1978. Dynamics and succession of the phytoplankton in a tropical lake: Lake Lanao, Philippines. Journal of Ecology 66: 849-880.

027

Lewis, W.M. Jr. 1979. Spatial distribution of the phytoplankton in a tropical lake (Lake Lanao, Philippines). Internationale Revue der gesamten Hydrobiologie 63: 619-635.

026

Lewis, W.M. Jr. 1980. Evidence for stable zooplankton community structure gradients maintained by predation. Pp. 625-634 In: American Society of Limnology and Oceanography, Special Symposium #3. "The Evolution and Ecology of Zooplankton Communities," C. Kerfoot (ed.), The University Press of New England, Hanover.

025

Lewis, W.M. Jr. 1978. Comparison of temporal and spatial variation in the zooplankton of a lake by means of variance components. Ecology 59: 666-671.

024

Lewis, W.M. Jr. and J.F. Saunders, III. 1979. Two new integrating samplers for zooplankton, phytoplankton, and water chemistry. Archiv fur Hydrobiologie 75: 244-249.

023

Lewis, W.M. Jr. and M.C. Grant. 1978. Sampling and chemical interpretation of precipitation for mass balance studies. Water Resources Research 14:1098-1104.

022

Lewis, W.M. Jr. 1977. Ecological significance of the shapes of abundance-frequency distributions for coexisting phytoplankton species. Ecology 58: 850-859.

021

Lewis, W.M. Jr. 1977. Comments on zooplankton grazing in Lake Erken. Limnology and Oceanography 22: 966-967.

020

Lewis, W.M. Jr. 1977. Feeding selectivity of a tropical Chaoborus population. Freshwater Biology 7: 311-325.

019

Lewis, W.M. Jr. 1978. A compositional, phytogeographical and elementary structural analysis of the phytoplankton in a tropical lake. Journal of Ecology 66: 213-226.

018

Lewis, W.M. Jr. 1978. Analysis of succession in a tropical phytoplankton community and a new measure of succession rate. The American Naturalist 112(984): 401-414.

017

Lewis, W.M. Jr. 1977. Net growth rate through time as an indicator of ecological similarity among phytoplankton species. Ecology 58:149-157.

016

Lewis, W.M. Jr. 1976. Surface/volume ratio: Implications for phytoplankton morphology. Science 192: 885-887.

015

Lewis, W.M. Jr. and D. Canfield. 1977. Dissolved organic carbon in some dark Venezuelan waters and a revised equation for spectrophotometric determination of dissolved organic carbon. Archiv fur Hydrobiologie 79: 441-45.

014

Lewis, W.M. Jr. and F.H. Weibezahn. 1976. Chemistry, energy flow, and community structure in some Venezuelan fresh waters. Archiv fur Hydrobiologie Supplement 50:145-207.

013

Lewis, W.M. Jr. 1975. Observations on the superficial sediment temperatures of some lakes in the southeastern United States. Freshwater Biology 6: 49-57.

012

Lewis, W.M. Jr. 1975. Effects of forest fires on atmospheric loads of soluble nutrients. Pp. 833-845 In: F.G. Howell, J.B. Gentry and M.H. Smith (eds.). Mineral Cycling in Southeastern Ecosystems. Tech. Info. Center, USERDA, Washington, D.C.

011

Lewis, W.M. Jr. 1975. A theoretical comparison of the attenuation of light energy and quanta in waters of divergent optical properties. Archiv fur Hydrobiologie 75:235-296.

010

Lewis, W.M. Jr. l975. Distribution and feeding habits of a tropical Chaoborus population. Verh. Int. Ver. Limnol. 19: 3l06-3ll9.

009

Lewis, W.M. Jr. and J.A. Tyburczy. 1974. Amounts and spectral properties of dissolved organic compounds from some freshwaters of the southeastern U.S.. Archiv fur Hydrobiologie 74: 8-17.

008

Lewis, W.M. Jr. 1974. An analysis of surface slicks in a reservoir receiving heated effluent. Archiv fur Hydrobiologie 74: 304-315.

007

Lewis, W.M. Jr. 1974. Effects of fire on nutrient movement in a South Carolina pine forest. Ecology 55: 1120-1127.

006

Lewis, W.M. Jr. 1974. Primary production in the plankton community of a tropical lake. Ecological Monographs 44: 377-409.

005

Lewis, W.M. Jr. 1974. Running waters of the tropics. Pp. 90-92 In: E. Farnworth and F.B. Golley (eds.) Fragile Ecosystems. Springer-Verlag.

004

Lewis, W.M. Jr. 1974. Evaluation of heat distribution in a South Carolina reservoir receiving heated water. Pp. 1-27 In: J.W. Gibbons and R.R. Sharitz (eds.). Thermal Ecology. TIS, Washington, D.C.

003

Lewis, W.M. Jr. 1973. A limnological survey of Lake Mainit, Philippines. Internationale Revue der gesamten Hydrobiologie 58: 801-818.

002

Lewis, W.M. Jr. 1973. The thermal regime of Lake Lanao (Philippines) and its theoretical implications for tropical lakes. Limnology and Oceanography 18: 200-217.

001

Lewis, W.M. Jr. 1970. Morphological adaptations of cyprinodontoids for inhabiting oxygen deficient waters. Copeia 1970: 319-326.