MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF GEOLOGY AND GEOPHYSICS
Twelve species of algae from the Northeast coast of the United States, three species of planktonic algae grown in the laboratory, a pelatic algae, a recent sediment and a sample of mixed marine plankton were analyzed for normal alkane hydrocarbons over the range C14H30 to C32H66. The results the benthic algae and mixed plankton exhibit a slight odd carbon predominance the planktonic algae grown under controlled laboratory conditions had a slight odd carbon predominance the recent sediment sample from Tarpaulin Cove, Mass., shows a pronounced odd carbon predominance definite differences in hydrocarbon distribution between classes were found The red algae, the green algae and the mixed marine plankton show a strong predominance of n-heptadecane. In the brown algae n-pentadecane predominates the Fucules have a higher ratio of n-pentadecane to n-heptadecane than the Laminariales. all plant samples show a hydrocarbon minimum in the n-C18H38 to n-C21H44 region and a moderate maximum in the n-C27H56 to n-C30H62 region pristane was found in several samples but phytane was not detected. Author
Prepared in cooperation with Woods Hole Oceanographic Institution, Mass. Contract Nonr-2196(00).