References 489 



Watson, S.W., T.J. Novitsky, H.L. Quinby and F.W. Valois (1977) 

 Determination of bacterial number and biomass in the marine envir- 

 onment. Applied and Environmental Microbiology, 33: 940-946. 



Watt, W.D. and F.R. Hayes (1963) Tracer study of the phosphorus cycle 

 in seawater. Limnology and Oceanography, 8: 276-285. 



Webber, P.J. (1978) Spatial and temporal variation of the vegetation and 

 its production, Barrow, Alaska, in Vegetation and Production Ecol- 

 ogy of an Alaskan Arctic Tundra (L.L. Tieszen, Ed.). New York: 

 Springer-Verlag, Inc., pp. 37-112. 



Weers, E.T. and T.M. Zaret (1975) Grazing effects on nannoplankton in 

 Gatun Lake, Panama. Verhandlungen Internationale Vereinigung 

 fur Theoretische und Angewandte Limnologie, 19: 1480-1483. 



Weiler, R.R. (1973) The interstitial water composition in the sediments 

 of the Great Lakes. I. Western Lake Ontario. Limnology and 

 Oceanography, 18: 918-931. 



Weiss, R. (1970) The solubility of nitrogen, oxygen and argon in water 

 and sea water. Deep-Sea Research, 17: 721-735. 



Welch, H.E. (1973) Emergence of Chironomidae (Diptera) from Char 

 Lake, Resolute, Northwest Territories. Canadian Journal of Zoo- 

 logy, 51: 1113-1123. 



Welch, H.E. (1974) Metabolic rates of arctic lakes. Limnology and 

 Oceanography, 19: 65-73. 



Welch, H.E. (1976) Chironomidae in a polar lake. Journal of the Fisher- 

 ies Research Board of Canada, 33: 227-247. 



Welch, H.E. and J. Kalff (1974) Benthic photosynthesis and respiration 

 in Char Lake. Journal of the Fisheries Research Board of Canada, 

 31: 609-620. 



Weiler, G. and B. Holmgren (1974) The microclimates of the arctic tun- 

 dra. Journal of Applied Meteorology, 13: 854-862. 



Westlake, D.F. (1968) Methods used to determine the annual production 

 of reed-swamp plants with extensive rhizomes. In Methods of 

 Productivity Studies in Root Systems and Rhizosphere Organisms. 

 Leningrad: Publishing House Nauka, pp. 226-234. 



Wetzel, R.G. (1964) A comparative study of the primary productivity of 

 higher aquatic plants, periphyton, and phytoplankton in a large 

 shallow lake. Internationale Revue der Gesamten Hydrobiologie, 

 49: 1-61. 



Wetzel, R.G. (1969a) Excretion of dissolved organic compounds by 

 aquatic macrophytes. BioScience, 19: 539-540. 



Wetzel, R.G. (1969b) Factors influencing photosynthesis and excretion 

 of dissolved organic matter by aquatic macrophytes in hard-water 

 lakes. Verhandlungen Internationale Vereinigung fur Theoretische 

 und Angewandte Limnologie, 17: 72-85. 



Wetzel, R.G. (1975) Limnology. Philadelphia: Saunders, 743 pp. 



