environment to help in the transition to low- In the end, aquaculture's 1997: 22). In some locales in impact, high-productivity fish contribution to the global food Thailand. farmers are farming. For example, Chinese supply will likely turn on how voluntarily coordinating the researchers are developing a ell these and other flushing and filling of ponds to protein supplement based on innovations can help fish farms reduce the spread of diseases. yeast that can substitute for more closely mimic natural In addition, some shrimp more than half the fishmeal in ecosystems, with better farmers are advocating an aquaculture feed preparations. recycling of nutrients and less ecolabeling"scheme that Further, work on fish breeding waste generation(Fc would certify shrimp grown by has already produced a strain Kautsky 1992: 5-24) producers using more benign of tilapia that grows 60 percent mean fewer inputs and farming practices(Christensen faster and with higher survival impacts, without eroding 1997:29) rates than native tilapia aquaculture's profitability and Progress in aquaculture Holmes1996:3435) versatility research can also be expected REFERENCES Anonymous. 1997. Aquaculture: A solution, or source of new problems? Nature 386(6621): 109 Christensen, J. 1997. Cultivating the worlds demand for seafood. The Ne York Times(New York City)( March1,1997):27-29 Folke, C and N. Kautsky. 1992. Aquaculture with its environment: Prospects for sustainability Ocean and Coastal Management 17(1): 5-24 Food and Agriculture Organization of the United Nations(FAO). 1997. The State of w orld Fisberie and aquaculture 1996. Rome: FAO Food and Agriculture Organization of the United Nations(FAO). 2000a. The State of the World Fisheries and aquaclture 2000. Rome: FAO Food and Agriculture Organization of the United Nations(FAO) Global Perspectives Unit. 2000b Agriculture: Towards 2015/30: Technical Interim Report. Rome: FAO.(April) Food and Agriculture Organization of the United Nations(FAO). 2001. FISHSTAT. Online at http://www.fao.org/fi/statist/fisoft/fishplus.asp Guo, X. 2000. Aquaculture in China: two decades of rapid growth. Aquaculture Magasine 26(3) Guja, B and A Finger-Stich. 1996. What price prawn? Shrimp aquacultures impact in Asia Entironment38(7)12-15,3-39 Holmes, B. 1996. Blue revolutionaries. New Scientist 152(2059): 32 OEarthTrends 2001 World Resources Institute. All rights reserved. Fair use is permitted on a limited scale and for educational I©EarthTrends 2001 World Resources Institute. All rights reserved. Fair use is permitted on a limited scale and for educational purposes. 4 environmental policy (FAO 1997:22). In some locales in Thailand, farmers are voluntarily coordinating the flushing and filling of ponds to reduce the spread of diseases. In addition, some shrimp farmers are advocating an "ecolabeling" scheme that would certify shrimp grown by producers using more benign farming practices (Christensen 1997:29). Progress in aquaculture research can also be expected to help in the transition to low￾impact, high-productivity fish farming. For example, Chinese researchers are developing a protein supplement based on yeast that can substitute for more than half the fishmeal in aquaculture feed preparations. Further, work on fish breeding has already produced a strain of tilapia that grows 60 percent faster and with higher survival rates than native tilapia (Holmes 1996:34-35). In the end, aquaculture's contribution to the global food supply will likely turn on how well these and other innovations can help fish farms more closely mimic natural ecosystems, with better recycling of nutrients and less waste generation (Folke and Kautsky 1992:5-24). That will mean fewer inputs and impacts, without eroding aquaculture's profitability and versatility. REFERENCES Anonymous. 1997. Aquaculture: A solution, or source of new problems? Nature 386(6621):109. Christensen, J. 1997. Cultivating the world's demand for seafood. The New York Times (New York City) (March 1, 1997):27-29. Folke, C. and N. Kautsky. 1992. Aquaculture with its environment: Prospects for sustainability. Ocean and Coastal Management 17(1):5-24. Food and Agriculture Organization of the United Nations (FAO). 1997. The State of World Fisheries and Aquaculture 1996. Rome: FAO. Food and Agriculture Organization of the United Nations (FAO). 2000a. The State of the World Fisheries and Aquaculture 2000. Rome: FAO. Food and Agriculture Organization of the United Nations (FAO) Global Perspectives Unit. 2000b. Agriculture: Towards 2015/30: Technical Interim Report. Rome: FAO. (April). Food and Agriculture Organization of the United Nations (FAO). 2001. FISHSTAT. Online at: http://www.fao.org/fi/statist/FISOFT/FISHPLUS.asp. Guo, X. 2000. Aquaculture in China: two decades of rapid growth. Aquaculture Magazine 26(3). Gujja, B. and A. Finger-Stich. 1996. What price prawn? Shrimp aquaculture's impact in Asia. Environment 38(7):12-15, 33-39. Holmes, B. 1996. Blue revolutionaries. New Scientist 152(2059):32