probably would not have been put to the trouble of searching out this 

 paper.) - J . L . M . 



1587 



Ryther, J. H. 1954. 



The ecology of phytoplankton blooms in Moriches Bay and Great South Bay, 

 Long Island, N.Y. Biol. Bull. 106: 198-209. 



Mercenaria (Venus) mercenaria is not nentioned. - M.W.S. 



1588 



Ryther, John H. 1969. 



The potential of the estuary for shellfish production. Proc. Natl. Shellf. 

 Assn. 59: 18-22. 



Hard clam is not mentioned specifically in this paper, but the principles 

 discussed are pertinent. If shellfish were dependent on the organic matter 

 produced in the volume of water in which they live, an annual yield of about 

 150 kg of meat per hectare would be possible. But because water containing 

 food moves back and forth across shellfish beds or suspended cultures, yields 

 can be much higher. Successful bottom culture utilizes organic production 

 from nearly 50 times the growing area, Japanese raft culture from 500 times, 

 and Spanish mussel culture 5,000 times the area. Intensive and extensive 

 culture cannot be carried out in the same estuary. - J.L.M. 



1589 



Ryther, John H. 1971. 



Recycling human wastes to enhance food production from the sea. Envir. 

 Letters 1 (2) : 79-87. 



An algal farm of 50 acres, operated in conjunction with a shellfish farm of 

 one acre, would be capable of providing tertiary sewage treatment for a 

 population of 11,000 people and could produce a by-product of one million 

 pounds of meats of commercial shellfishes. - J.L.M. 



1590 



Ryther, J. H. 1974. 



Fish and shellfish pathology. Smithson . Sci. Info. Exch. , Inc., 

 Washington, D.C. 



Smithsonian Sci. Info. Exchange quoted price of $90. Search terminated. 

 - J.L.M. 



1591 



Ryther, J. H. 1975. 



Preliminary results with a pilot plant waste recycling marine aquaculture 

 system. Woods Hole Ocean. Inst., NOAA Office of Sea Grant, WHOI 75-41, 

 NOAA 04-4-158-5, 61 p. 



Bivalve mollusk culture was unsuccessful in the 1st yr of operation. - from 

 ADP abstract received through interlibrary loan. - J.L.M. 



442 



