Macrobenthos populations of the IBP lakes were sampled during October and November of 1972. Analyses of the samples revealed dominance of chrinomids and oligochaetes in both littoral and profundal regions for at least this time of year. Due to sampling difficulties the oligochaete material was not used for chemical analyses....
The feasibility and enumeration studies have led to the following conclusions: The nitrogen fixation studies should be done in 1973, using acetylene reduction technique with some verification by N15. The denitrification studies should be done with N15 technique. The decision to continue more enumeration sampling of nitrogen transforming bacteria should...
Aquatic mineral measurements and sediment characterization of the Cedar
River basin lakes and streams reveals two largely distinct physical and
chemical environments. Near the headwaters of the Cedar River Watershed
the composition of lakes and streams reflect adjacent rocks but the effects
of forest and agricultural practices and of processes...
The purpose of the past year's research was to begin measurement of the respiratory metabolism of zooplankton and phytoplankton in four lakes in the Lake Washington drainage. This was done, using an enzyme assay for the activity of the electron transport system. The lakes were sampled frequently and depth profiles...
Grazing rates and density of the crustacean zooplankton were measured
in Findley and Chester Morse Lakes and Lake Sammamish, Washington.
Sample analysis is incomplete at reporting time, thus estimates of
production from examination of life stage biomass changes was not possible.
Maximum density of crustacean zooplankton was about 10/1 in...