return rapidly to their original chemical characteristics if proper consider- 

 ation is given to the depth of the spoil material deposited. With the proper 

 approach and using the proper criteria, natural and possibly artificial marsh 

 regeneration can be accelerated. In unpolluted areas where undiked spoil deposi- 

 tion techniques are used, no significant water quality impairment in marine 

 environments appears to have taken place in the general area of the dredging 

 activity, in relation to the parameters studied. Dredge spoil deposition using 

 diked confinement techniques is potentially more environmentally dangerous than 

 undiked techniques. 



196. WONG, V.D., "Moss Landing Harbor, California: A Case History," Shore 

 and Beach, Vol. 38, No. 2, Oct. 1970, pp. 26-39. 



The coastal environment is a delicate system of shore processes which 

 at best, only reaches a state of dynamic equilibrium. A manmade structure may 

 upset the natural balances, resulting in dramatic changes in the coastline. 

 This is a report on the construction and maintenance of the entrance channel 

 and protective jetties at Moss Landing Harbor, California, and the effects these 

 structures may have had on the nearby coastal environment. Basic shore processes 

 pertinent to the area before the construction of Moss Landing Harbor are de- 

 scribed. The problems at Moss Landing Harbor were not as great as initially 

 anticipated due to unique littoral current patterns and the presence of an 

 offshore canyon. 



197. WORLD DREDGING CONFERENCE, "Dredging: Environmental Effects and Technol- 

 ogy," Proceedings of the Seventh World Dredging Conference, 1976. 



These proceedings of Session 2 of the 1976 World Dredging Conference con- 

 tain 53 papers on the environmental effects and technology of dredging. 



198. WRIGHT, T.D., "Aquatic Dredged Material Disposal Impacts," Dredged 

 Material Research Program, Technical Report DS-78-1, U.S. Army Engineer 

 Waterways Experiment Station, Vicksburg, Miss., Aug. 1978. 



Studies of the impact of dredged material disposal in open-water systems 

 were conducted at five locations: New York (Eatons Neck), Ohio (Ashtabula 

 River), Texas (Galveston), Oregon (Columbia River), and Washington (Dunwamish 

 Waterway). The sites represented a variety of disposal practices, dredged 

 materials, and aquatic habitats. Disposal did not occur during the course of 

 Eatons Neck study, but did at the other four sites. This report summarizes 

 the findings of the investigations. 



199. ZEIN-ELDIN, Z.P., "Effect of Salinity on Growth of Postlarval Penaeid 

 Shrimp," Biological Bulletin, Vol. 125, No. 1, Aug. 1963, pp. 188-196. 



The effect of salinity on the growth and survival of postlarvae of white 

 shrimp, Penacus setiferus, and grooved shrimp, P. aztecus or P. duorarvm, has 

 been studied in the laboratory. The growth rate did not differ significantly 

 among shrimp held at 2, 5, 10, 25, or 40 parts per thousand. Survival was 

 generally excellent at all salinity levels tested, including 40 parts per 

 thousand. The results suggest that salinity, per se, does not limit growth 

 of young shrimp. 



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