is making a marine seismic profiling survey in the western basin of Lake Erie. Seismic 

 coverage, totaling 818 miles, is obtained about every 5 minutes of latitude and longitude 

 west of Point Pelee in both Canada and United States waters. 



Marine : 



Georgia 2-75-R Charles M. Frisbie $28,800 



Habitat improvement and ecological classification of oyster growing areas - This project is 

 undertaken for development of oyster beds on barren mud flats by substrate stabilization. 

 Ecological classification of the beds is based on physiological effects of water temperature, 

 salinity, and organic content upon oyster growth. 



Maryland 3-30-R Gerald Schubel $34,000 



Suspended sediments in the Upper Chesapeake Bay - Suspended materials are collected monthly at 

 the surface, middepth, and near the bottom at each of 31 stations in the Upper Chesapeake Bay 

 from the Susquehanna River mouth to Pooles Island. The properties of the suspended materials 

 are used to determine the relative importance of the several origins. Chesapeake Bay 

 Institute, Arjiapolis, does the field work. 



Maryland 3-56-R Charles H. Southwick $U,800 



Biologic and environmental control of Eurasian milfoil (Myriophyllum spicatum L. ) in 

 Chesapeake Bay - Excessive milfoil growth is an environmental problem that affects 

 fish population abundance and growth and the proper utilization of fishery resources. 

 This project is a biological study of Eurasian milfoil in upper Chesapeake Bay and tribu- 

 taries, including Middle River, Seneca Creek, Back River, Saltpeter Creek, West River, and 

 Rhode River. The aim is to find a means of biologic control. 



Mississippi 2-A2-R J. Y. Christmas $^6,500 



A seasonal study of nektonic and benthic faunas of the shallow Gulf off Mississippi out to 

 the fifty fathom curve - Monthly semiquantitative collections are made of the benthic fauna 

 and the floating components, chiefly neuson, in the water layer of the Gulf off the 

 Mississippi Gulf out to 50 fathoms. Together with the current work in the bays and sounds, 

 this study will cover the marine-estuarine littoral and shore fishes and crustaceans of 

 economic importance on the Mississippi coast. 



Mississippi 2-25-R J. Y. Christmas $108,000 



Cooperative Gulf of Mexico estuarine inventory and study. Mississippi - This study of the 

 estuarine areas of Mississippi is part of a Gulf of Mexico estuarine inventory in cooperation 

 with other Gulf States and the Bureau of Commercial Fisheries. The inventory includes the 

 physical and biological characteristics of each estuarine zone to the 10-fathom isobath and 

 consists of four phases: area description, hydrology, sedimentology, and biology, 



Finf ish( fresh-water ) 



Forty-four research projects have been approved for work on fresh-water finfish. Of these, 

 37 are continuing and seven have been completed. Emphasis is on channel catfish and in pond 

 and reservoir fish culture. 



Channel catfish and bullhead : 



Arkansas /i-49-R Richard A. Collins $U,600 



Rearing single and multiple species populations of catfish in cages - The application of cage- 

 rearing techniques to large reservoir lakes and smaller private lakes is the purpose of this 

 study. Channel and blue catfish are stocked in the same cage and in individual cages to 

 determine growth, oxygen levels, food conversion, and behavior of mixed populations. State 

 College of Arkansas is making this study at Lake Beaverfork. 



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