1042 C. Chemical Oceanography OLR ( 1987 ) 34 (12)

of magnitude higher than in the hypolinmion. The most likely precursor for DMS is algal dimethyl- sulfoniopropionate (DMSP), which showed similar vertical profiles. Microorganisms in the pond, especially in the metalimnion, can decompose DMSP to DMS, while photosynthetic sulfur bacteria in the hypolimnion can consume DMS. DMS production and consumption in Salt Pond has been estimated considering production of DMS in the epilimnion and metalimnion, removal of DMS via gas exchange to the atmosphere, tidal exchange, and microbial consumption. Skidaway Inst. of Oceanogr., P.O. Box 13687, Savannah, GA 31416, USA.

87:6824 Yamada, Hisashi, Mitsu Kayama and Kuniyasu

Fujisawa, 1987. Sellsmlal changes of ~ - tions of inorpnic and orphic nitrosen in coestal marine ~ t s . Estuar. coast. Shelf Sci., 24(5):585-598.

The seasonal fluctuations of the concentration of nitrogenous compounds in sediments was investi- gated for three regions of the Seto Inland Sea in Japan; the variation of nitrogenous compounds in sediments was also studied in a laboratory exper- iment. Ammonium was the major component and organic nitrogen was the next most important. It was possible to explain the seasonal fluctuation of nitrogenous compounds in terms of the rates of the metabolic pathways of nitrogen in the sediments. Ammonium did not occur from solubilization of particulate organic nitrogen followed by minerali- zation, but from direct mineralization of particulate organic nitrogen in sediments. Anaerobic conditions of the sediments led to the dissolution of adsorbed ammonium. Water Pollution Div., Tokai Reg. Fish. Res. Lab., Ministry of Agric., Forestry and Fish. Arasaki, Nagai, Yokosuka 238-03, Japan.

C210. Pollution (see also B350-Atmospheric pollution, C110-Radioactivity, radioiso- topes, E300-Effects of pollution, F250- Waste disposal)

87:6825 Allen, J.R.L., 1987. Coal dust in the Severn Estuary,

southwestern UK. Mar. Pollut. Bull., 18(4):169- 174. Dept. of Geol., The Univ., Reading RG6 2AB, UK.

87:6826 AI-Saad, H.T., 1987. Distribution of polycyclic

aromatic hydrocarbom (PAID io suffidal ~ai-

ments from Shatt M.Arab River and the north- west ~ of the ~ Gulf. Mar. Poilut. Bull., 18(5):248-251. Mar. Sci. Centre, Basrah Univ., Basrah, Iraq.

87:6827 Bird, S.C., 1987. The effect of hydrological factors on

trace metal ~ ~ m in the River Tawe, South Wales. Environ. Pollut., 45(2):87-124. Dept. of Geogr., UC Swansea, Singleton, Swan- sea, Wales, UK.

87:6828 Cleary, J.J. and A.R.D. Stebbing, 1987. Organottn in

the sm'face microleyer and subsurface waters of southwest England. Mar. Pollut. Bull., 18(5):238- 246. Inst. for Mar. Environ. Res., Prespect Place, The Hoe, Plymouth, PLI 3DH, UK.

87:6829 Davis, W.S., T.J. Denbow and J.E. Lathrop, 1987.

[Pollutants in] Aquatic sediments. [Review.] J. War. Pollut. Control Fed., 59(6):586-597.

Reports of new sampling and analysis methods for contaminated sediments are discussed, followed by reviews of data on the effects of oxygen demand, organic C, nutrients, metals, radionuclides, organics, and dredge spoils on sedimentary environments. Toxicity, biological activity, modelling, transport, and paleolimnology are also reviewed. US EPA Reg. 5, 230 S, Dearborn, Chicago, IL 60604, USA. (gsb)

87:6830 Grzybowski, Janusz, Jan Halkiewicz, Henryk Lam-

parczyk and Aleksander Radecki, 1987. Ali- phatic and polycyciic aromatic hydrocarbons in the southern Baltic Sea. Mar. Pollut. Bull., 18(5):p.247. Dept. of Physical Chem., Med. Acad., 80-416 Gdansk, K. Marks 107, Poland.

87:6831 Lyngby, J.E. and Hans Brix, 1987. Monitoring of

heavy metal contamination in the Limfjord, Denmark, using biological Indicators and sedi- ment. Sci. total Environment, 64(3):239-252. Water Quality Inst., 11 Agern Alle, DK-2970 Horsholm, Denmark.

87:6832 Marcomini, A., A. Sfriso and B. Pavoni, 1987.

Variable wavelength absorption in detecting environmentally relevant PAils by high-per- form~m~ liquid chlmnato~mphy. Mar. Chem., 21(1):15-23. Dipart. di Sci. Ambientali, Facolta di Chimica Industriale, Calle Larga S. Marta 2137, 30123 Venezia, Italy.