The 4 Stages of Culture Shock – Global Perspectives - …
Chaco Culture National Historical Park - Wikipedia
Notwithstanding differences in the physioco-chemical characteristicsof its habitats (viz. fresh water, brackish water and sea water) aquaculturesystems are of several kinds. Most of the systems are highlyvariable in mannitude and intensity ranging to serve as one-family unitsor large scale commercial enterprises. The different kinds of aquacultureare:
A summary of Themes in 's Beowulf
Not only are the species different from those cultured infreshwater ponds but the principle of operation of brackishwater pondsis different from those of freshwater ponds. Here the pond or thefarm is essentially located on a tidal creek or stream and there isa system of sluices to control the ingress and egress of water intoand from the ponds. Examples are: Milkfish farms in Philippines,Taiwan, Indonesia etc. Brackish water fish farming is a fast growingscience. Here also there is competition with other land use agencies,especially forestry, but the extent of competition with agriculture isrelatively less because coastal land is generally not suitable foragriculture. The ARAC farm at Buguma is tidally fed and the salinityrange is 5 – 21 ppt.
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Having defined aquaculture and mentioned some of the reasons whichhave contributed to imparting a fillip to aquaculture in recent times,it is proper to state the objectives of aquaculture. These are:
Increasing prices and even the availability of fish meal, which,as stated earlier, is the ingredient of most fish-feeds. Thisis linked with the Peruvian Anchovy crisis, which, apartfrom aquaculture, adversely hit agriculture, through scarcity ofguano and fertilizer, and poultry industry through scarcity offish meal. This has led to search for cheaper protein substitutesin fish feeds and spurt of research activity in that directionin different countries.