476 E. Biological Oceanography OLR (1983) 30 ~6)

flow-through microcosms; nutrient enrichment de- creased Cd effects. Useful indicators of system response to Cd were community metabolism and composition and output/input ratios of essential elements. Inst. of Ecol., Univ. of Georgia, Athens, Ga. 30602, USA. (msg)

83:3527 Hudson, J.H., E.A. Shinn and D.M. Robbin, 1982.

Effects of offshore oil drilling on Philippine reef corals. Bull. mar. Sci., 32(4):890-908.

'Analysis of growth rates showed that little sup- pression of head coral growth could be attributed to drilling. However, diver observation and sampling transect photomosaics revealed an estimated 70-90% reduction in foliose, branching, and plate-like corals in an iron-stained area that extended out from the wellheads. Core samples of 38 Porites lutea head corals were collected from around the drilling site off NW Palawan Island.' USGS, Fisher Island Sta., Miami Beach, Fla. 33139, USA.

83:3528 Johnson, B.T. (ed.), 1980/82. Impact of xenobiotic

chemicals on microbial ecosystems. Seminar, Miami Beach, May 1980. Tech. Pap. U.S. Fish Wildl. Serv., 107:36pp; 6 papers.

Are xenobiotic chemicals affecting microbial activ- ities to an extent which could impair their ecosystem functions, such as nutrient cycling? Representatives from government, business and academia address this question, dealing with topics including specific testing for microbial effects, effects on soil microbes, poisoning of specific and non-specific microbial pathways, biochemical determination of the biomass and community structure of estuarine and detrital sedimentary microbiota, and physiological effects of paraquat. (mjj)

83:3529 Kaim-Malka, R.A., 1983. [Effects of detergents on

reproduction in ldotea bMthica basteri; (Crns- tacea, lsopoda).l Mar. environ. Res., 8(1):41-62. (In French, English abstract.) Sta. Mar. d'Endoume, Chemin de la Batterie des Lions, 13007 Marseille, France.

83:3530 Lewbel, G.S., 1982. New study assesses IXTOC

effects. Offshore, 42(14):82-84.

Data from several years of baseline surveys made it possible to compare the 'macroinfauna' of the south Texas outer continental shelf before, during and after the IXTOC l blowout. Although benthic communities decreased dramatically in mid- and

post-spill collections, "there were no changes in organic carbon or sediment grain size' to account for the decreases, and it was concluded that the changes 'could not be definitely related to the spill.' LGL Ecol. Res. Assoc., Inc.. Bryan, Tex., USA. (mwf)

83:3531 Lo, N.C.H., J.E. Powers and B.E. Wahlen, 1982.

Estimating and monitoring incidental dolphin mortality in the eastern tropical Pacific tuna purse seine fishery. Fishery Bull. natn. mar. Fish. Serv., U.S., 80(2):396-401.

In 1976, the U.S. District Court set a quota of 78,000 dolphins as the maximum allowable kill by the U.S. tuna fishery for that year. This paper describes statistical methods that were used to estimate mortality levels and to help project when the quota would be reached. This same procedure has been used for foreign fleets since 1979. SWFC, NMFS, NOAA. La Jolla, Calif. 92038, USA. (ahm)

83:3532 Marsh, H. and P.K. Anderson, 1983. Probable

susceptibility of dugongs to capture stress. Biol. Conserv., 25(1):1-3. Zool. Dept., James Cook Univ., N. Qld., Townsville 4811, Australia.

83:3533 Ohgai, Masaharu, Kaoru Takesue and Arao

Tsuruta, 1982. Effect of heat shock on the growth of marine phytoplankton. Bull. japan. Soc. scient. Fish., 48(9):1233-1236. (In Japanese, English abstract.)

Growth inhibition in Dunaliella sp., Olisthodiscus sp. and Thalassiosira rotula occurred above 42°C, 37.5°C and 35°C, respectively. Heat resistance in Olisthodiscus sp. and T. rotula was stronger in the stationary than in the exponential phase. Shimo- noseki Univ. of Fish., Yoshimi, Shimonoseki 759-65, Japan.

83:3534 Petukhov, S.A., N.P. Morozov and E.M. Nikonenko,

1982. On the priority of the toxicological 'hazard' of nickel in the sea. Mar. Pollut. Bull., 13(12): p.426.

Ketchum's (1975) conclusion that Ni pollution in the sea presents the greatest ecological danger of all the heavy metals apparently resulted from using unwar- rantably low values of Ni toxic concentrations. VNIRO, 107140 Moscow, V. Krasnoselskaya, 17a, USSR.

83:3535 Read, P.A., K.J. Anderson, J.E. Matthews, P.G.

Watson, M.C. Halliday and G.M. Shiells, 1982.