A study to determine the effect of certain synthetic organic
insecticides on the Biochemical Oxygen Demand (BOD) Test was
performed. BOD tests on a standard glucose-glutamic acid substrate
were conducted while in the presence of dieldrin, dichlorodiphenyltrichloroethane
(DDT), or diazinon. From the BOD data, the following
parameters were obtained:
1....
Previous research has indicated that considerable amounts of finely divided slash accumulate in small mountain streams following timber harvesting. The subsequent biological decomposition of this organic matter can result i.n the reduction of dissolved oxygen (DO) concentration to levels as low as 0.6 ppm. These DO levels are lethal
to...