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Biol Bull 72: 165-175. (April 1937)
© 1937 Marine Biological Laboratory
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THE EXPERIMENTAL DECOMPOSITION AND REGENERATION OF NITROGENOUS ORGANIC MATTER IN SEA WATER

THEODOR VON BRAND 1, NORRIS W. RAKESTRAW 1, and CHARLES E. RENN 1

1 From the Woods Hole Oceanographic Institution, Woods Hole, Mass.

In conclusion, this study has shown:

1. That it is possible to reproduce the complete cycle of nitrogen regeneration.

2. That the transformation of decomposing plankton (especially diatoms) into ammonia is very rapid, beginning as soon as the initial substance disappears from the body. The amounts of soluble nitrogenous substances of higher molecular weight in these experiments can have been only very small.

3. The main stages in the decomposition are: dead body—ammonia—nitrite—nitrate.

4. Under these conditions, at least, no toxic substances are formed which inhibit the flowering of diatoms. The rapid and abundant development of the latter showed the regeneration of the water to be complete.






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Copyright © 1937 by the Marine Biological Laboratory.