seaweeds appears promising, both for domestic U.S. consumption 



and export. Tables and graphs are used to indicate Japanese 



production, trade, consumption and prices, and U.S. imports. 



Subject descriptors: 



Seaweeds; production data; trade data; consumption data; prices; 



outlook. 



167 



Parker, Henry S. 



1974. 



The culture cf the red algal genus Eucheuma in the Philippines. 



Aguacult. 3(4): 425-439. 



The author discusses uses, culture-method investigations, 



biological factors, harvesting pressures on natural beds, 



cultivation potential and methods, current productivity and 



economics of farming, and the outlook. Based on data from a 



pilot farm and specified assumptions, revenue, costs and returns 



are estimated for a family farm using a two-module operation. 



Each module consists of 200 net structures and occupies about 



0.25 ha. Allowing for purchased or leased nets, other capital 



eguipment, and necessary farm tools, it is estimated that most of 



the gross revenue would accrue to the farmer and his family for 



labor and management input. The work is familiar to the area's 



people, the culture is suited to many parts of the Philippines, 



and the product has a ready market. Labor returns exceed those 



in alternative pursuits. Some problems are indicated. 



Subject descriptors: 



Seaweeds; Philippines; revenue; costs; revenue; returns. 



168 



Silverthorne, Wesley; Sorensen, Philip E. 



1971 . 



Marine algae as an economic resource. 



Preprints of the 7th Annual Conf. of the Mar. Tech. Soc, Wash., 



D. C, August 16 to 18, 1971, pp. 523-533. 



The present study is designed to complement the many widely-known 



surveys of the economic value of marine animal and mineral 



resources. The total market value of the world's current annual 



production of unprocessed seaweeds is estimated to be $350 



million. Estimates of the guantity and value of world production 



of important seaweed products are also give,n and prospects for 



further growth considered. Despite much speculation concerning 



the potential for food and drugs from marine algae, the evidence 



presented in this paper indicates that seaweed will continue to 



contribute only marginally to human nutrition and medication in 



the decade ahead. Its major uses will continue to be as a 



specialty food in the Orient and as the raw material for the 



production of specialized colloids, fodder, and fertilizer 



supplements in the industrialized countries. Furthermore, the 



large amounts of labor involved in present methods of cultivation 



of marine algae lead us to conclude that such intervention is 



77 



