NATIONAL OCEANOGRAPHIC PROGRAM—1965 385 
15. lLimnological interaction in Lake Mendota. 
a. A. D. Hasler,.Professor of Zoology, and others, University 
of Wisconsin. 
b. To study comprehensively all of the interactions in the 
environment in Lake Mendota. 
c. The environmental factors upon the life history of the 
white bass are investigated including the causes of variations in the 
reproductive success and the mechanism by which the fish recognize an ecological 
barrier. The possible relationship between oscillation of internal waves 
in the lakes and activity of the fauna in these regions is also under 
investigation. 
16. Hnergy budget of Copepoda of Jake Winnedagro Wisconsin. 
a. SS. Richman, Assistant -l'rofessor of Riolory, St. Iawrence 
College. A 
b. To determine the energy budget of the predominant 
Cladoceran and Copepod species of the primary consumerate level in Lake 
Winnebago. 
c. The algae are labeled with radioactive carbon-1ll, to 
determine energy input. The expended energy is calculated by converting 
oxygen consumed to calories used. Food organisms and herbivores are anaiyzed 
for energy content by means of a miniature bomb calorimeter. Life histories 
are studied to determine growth and reproduction rates. 
17. Natural radiocarbon determination of absolute sedimentation 
rates and pollen stratigraphic analysis of environments of deposition. 
a. ud. Gordon Ogden III, Associate Professor of Botany, Ohio. 
Wesleyan University. 3 
b. To determine sedimentation rates in the Great Lakes areg. 
c. Carbon content is determined, followed by radiocarbon 
determination. Samples are cored in selected lakes in the Great Lakes area. 
Between 20 and 0 radiocarbon determinations are made on each core. 
18. Fossil plant pigments as indices to productivity in acquatic 
and semi-acquatic habitats. 
; a. E. Gorham, Associate Professor, Botany Department, 
University of Minnesota. 
b. To test the value of productivity indices such as fossii 
plant pigments over a wide range of environments. 
35-377, O—64——_26 
