68 June 2012 emony is called Pungeoje, which is a ritual ceremony to pray for a bountiful harvest. There were many activities to celebrate the seaweed harvest, similar to thanksgiving harvest celebrations in the fall. In Korea, miyeok-guk (Undaria soup) is popularly consumed by women after giving birth because miyeok contains abundant calcium and iodine, nutrients important for nursing mothers. Many women consume miyeok-guk during pregnancy as well. It is also traditionally eaten on birthdays as a reminder of the first food that the mother has eaten and passed on to her newborn through her milk, thus bringing good fortune for the rest of the year. — Ik Kyo Chung President Korean Chapter (Continued from page 14) Korean Chapter Update over biofloc systems was driven in large part by descriptions of practices and experience at Belize Aquaculture Ltd., and before that, Solar Aquafarms in California. In a chapter written in cooperation with Nyan Taw, numerous examples of the commercial-scale production of tilapia and shrimp in biofloc systems are described. Dr. Taw’s work with intensively managed, lined shrimp ponds is truly impressive. In these ponds, production is 20-25 tons/ha per crop with some ponds providing yields of over 45 tons/ha! The large-scale implementation of biofloc technology in commercial aquaculture is clearly demonstrated in this chapter, indicating that it is not only the domain of research scientists. As was the case with the first edition, this soft-cover book would have benefited from some careful editing to improve the quality of the presentation. There are numerous typographical errors and formatting inconsistencies to mar the reading experience. Given the high demand for this material, Book Review (Continued from page 66) macrophytes in the littoral zone. The only solution for this problem is the consistent removal of excessive mud layers. However, this method is extremely costly and unrealistic without a state subsidy. Also, fish predators are considered to be a major problem for the Czech inland fisheries sector. Over the last few years, the most serious losses have been caused by cormorants (Phalacrocorax carbo sinensis), otters (Lutra lutra) Czech Republic (Continued from page 27) it is clear that the manuscript was rushed to the publisher, perhaps prematurely. However, these shortcomings do not detract from the overall quality of the material presented. There is an abundance of hard quantitative information that can be used for system design and operation. Most (but not all) chapters include sections on “practical tips” that are (for the most part) useful and indeed practical. The book concludes with a short glossary of important terms. This book will be useful to commercial practitioners, research scientists, aquaculture engineers, and students. Despite the modest shortcomings, this new and greatly expanded edition would be of interest to anyone with a passing interest in biofloc technology, even to those who purchased the first edition. At US$50 for WAS members, the book is a bargain. Apparently the new edition is selling well, suggesting that a third edition may become necessary in the future. If recent history is any guide, new findings and experience will emerge as the field of biofloc technology continues to develop and become more refined. Notes 1Editor-in-Chief, World Aquaculture magazine and herons (Ardea cinerea and A. alba). Currently, the losses caused by abundant fish predators are estimated at around EUR 11 million per year. Cormorant, otter, herons and mink contribute to these losses by approximately 70, 23, 5 and 2 percent, respectively. The market image of carp is not at an appropriate level and its consumption, outside of the traditional Christmas season, is quite low. Carp also fails to attract younger consumers. The sector is vulnerable to imports of cheaper fish from other European countries and Southeast Asia. The future development of Czech fish production should be focused on strengthening the domestic market. Attention should be focused on production of game fish for stocking and restocking purposes. Hobby ponds for angling should offer new environmentally friendly agrotourism opportunities. The prospects for further development of the fisheries sector in the Czech Republic are seen in the: • Introduction of highly intensive recycling systems, particularly for hatchery/nursery stage. • Investments into modernizing processing plants aimed at satisfying the processed fish demand and creating value-added fish products. • Greater market focus, including organic and eco-labeled products. • Better product quality control — i.e., off-flavor elimination. • Processing diversification –e.g., smoked fish (carp). • Appropriate marketing strategies.
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