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close this bookCERES No. 070 - July - August 1979 (FAO Ceres, 1979, 50 p.)
View the document(introduction...)
View the documentAcknowledgements
Open this folder and view contentsCERESCOPE
View the documentNeeded:
View the documentThe new ocean regime : Winners and losers
View the documentFunding better fisheries
View the documentManaging our own
View the documentThe island that discovered the sea
View the documentA place to begin
View the documentPosed on a knife - Edge
View the documentBooks
View the documentReaction


This issue...

The compilation of material and manuscripts for the special section on fisheries that begins on page 13 has underscored two or three notable points. If estimates of land-based production of food frequently suffer from the lack of consistent and reliable data, this becomes doubly true in the calculation of marine and freshwater food resources. With few exceptions, the status of fishery stocks must be gauged from the trend in the annual catch. In freshwater fisheries in particular, annual catch data usually relate only to what is marketed and therefore omit significant quantities of fish that are consumed directly by local populations.

Moreover, fishery Statisticians are now giving greater attention to the interrelationship among various species that share the same waters, recognizing that calculations for potential yield from one particular species cannot be carried out in a vacuum. Put another way, the total potential catch from a given area is not necessarily the neat arithmetic sum of the estimated potential yield for all species.

Finally, the interrelationship among marine species has a counterpart of a different type in regard to freshwater fisheries and, to some extent, aquaculture. There, the interrelationship concerns other uses of water; considerable pessimism arises from the fact that many water development schemes for irrigation or hydroelectric power have been undertaken without due regard to their effect on fisheries. And again, in some areas where aquaculture had been developed in conjunction with paddy rice production, increased use of pesticides in the latter operation has threatened the fish production.

... and next

North-South has become such a colloquialism in the development dialogue that it is easy to forget that most of the poverty lies around the midriff of the globe - the humid tropics. On that region, and its problems, ceres will focus its September-October issue.