OLR( 1979)26(I 2) B. Chemical Oceanography 771

Pacific.] Cah. ORSTOM, S#r. Oc~anogr., 16(2): 179-189.

Vertical distributions of organic nitrogen and phosphorus indicate that dissolved organic matter is abundant in the euphotic zone, whereas particulate organic matter is more abundant at depth. Highest particle concentrations are found at current boundaries rather than at the pycnocline. Meridional distributions and the role of organic matter in the tropical food chain are discussed. O.R.S.T.O.M.,~ C.R.O.B.P. V 18, Abidjan C6te d'Ivoire. (rio)

79:5938 Sargent, J. R., 1978. Marine wax esters. (Review.)

Sci. Prog., 65(260): 437-458.

A significant fraction of the total carbon fixed in the oceans through photosynthesis is converted to wax esters in zooplankton grazers; these lipids are, in turn, major dietary constituents of some of the most abundant fish species. Research of the past decade on the distribution, nature, metabolism and biological roles of wax esters in the marine food chain is reviewed. Includes 73 references. Natural Environment Research Council, Institute of Marine Biochemistry, Aberdeen ABI 3RA, Scotland. (bwt)

79:5939 Szekielda, K.-H., 1968/71. Organisch gel6ster und

partikul~irer Kohlenstoff in einem Nebenmeer mit starken Salzgehaltsschwankungen (Ostsee). [Dissolved and particulate organic carbon in a sea with marked salinity fluctuations--Baltic Sea.] Vie Milieu, Suppl. 22:579-612.

Previous carbon analyses for the Baltic Sea are reviewed and high carbon concentrations are traced to freshwater sources. Total organic carbon concentrations are highest (7 mg L -~) during the spring bloom, primarily due to stratification of the photosynthetic zone. Transport of organic material into basins may result from bottom water movement. Goddard Space Flight Center, Greenbelt, Md., U.S.A. (rio)

9. Nutrients

79:5940 Bagliniere, Catherine, 1979. Evolution saisonniere

des sels nutritifs dissous darts I'eau interstitielle des sediments superficiels du plateau continental m~diterran~en (C6te d'Azur, France). [Season- al evolution of nutritious dissolved salts in inter- stitial water of superficial sediments sampled on the continental shelf of the Mediterranean Sea, C6te d'Azur, France.] C. r. hebd. S~anc. Acad. Sci., Paris, (A)288(15): 1119-1122.

The nutritious matter in interstitial waters shows a temporal evolution that is related to the organisms

utilizing it; other parameters tend to disturb the cycle. In Mediterranean surface sediments, dis- solved nitrate concentrations are highest in spring (40 uatg/L) and lowest in summer and winter, whereas dissolved phosphate concentrations follow opposite trends. Laboratoire de G~odynamique sous- marine, et L.A. au C.N.R.S., No. 197, Station marine, 06230 Villefranche-sur-mer, France. (rio)

12. Radioactivity, radioisotopes, etc.

79:5941 Aleksan'yan, O. M., 1978/1979. Investigation of the

vertical distribution of ~°Sr and ~3:Cs in bottom deposits of the Azov Sea. Soy. J. Ecol. (a trans- lation of Ekologiya), 9(5): 478-479. Azov Fish- eries Research Institute.

79:5942 Guegueniat, P., J. P. Auffret and Y. Baron, 1979.

Evolution de la radioactivite artificielle gamma dans des s~diments littoraux de la Manche pen- dant les ann~es 1976-1977-1978. [Evolution of gamma artificial radioactivity in coastal sedi- ments of the English Channel during the years 1976, 1977 and 1978.] Oceanol. Acta, 2(2): 165-180.

The introduction of man-made fission products, via atmospheric fallout and industrial disposal, is studied in various estuaries, bays and harbors. Activity levels in the 0-10 cm sediment layer are determined and inputs from five Chinese nuclear tests are identified. Differentiation of contributions from different sources is attempted. C.E.A. Laboratoire de Radio~cologie marine, D~partement de Protection, B.P. no. 270, 50107 Cherbourg, France. (rio)

79:5943 Livingston, H. D. and V. T. Bowen, 1979. Pu and

~:Cs in coastal sediments. Earth planet. Sci. Letts, 43(I): 29-45.

Profiles of Cs-137, Pu-238 and Pu-239,240 in sediments from nearshore, shelf and slope zones off the northeast coast of the United States are analyzed. The effects of bioturbational, geochemical and biogeochemical processes on the inventories, distributions and isotopic ratios of the radionuclides are examined. Knowledge of the behavior of these fallout-derived radionuclides is considered to be useful in predicting the behavior of the same radioactive elements when they are released into the marine environment from other sources. Department of Chemistry, Woods Hole Oceanographic Institution, Woods Hole, Mass. 02543, U.S.A. (rio)

79:5944 Makhon'ko, K. P., 1979. Calculation of the surface