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This book focuses on the developing field of valuing food safety and nutrition. It evaluates the relative strengths, weaknesses, and requirements of the major methodologies employed in valuation research. The book includes a discussion on key factors such as information on consumer attitudes.
Until fairly recently, populations were handled as homogenized averages, which made modeling feasible but which ignored the essential fact that in any population there is a great variety of individuals of different ages, sizes, and degrees of fitness. Recently, because of the increased availability of affordable computer power, approaches have been developed which are able to recognize individual differences. Individual-based models are of great use in the areas of aquatic ecology, terrestrial ecology, landscape or physiological ecology, terrestrial ecology, landscape or physiological ecology, and agriculture. This book discusses which biological problems individual-based models can solve, as well as the models' inherent limitations. It explores likely future directions of theoretical development in these models, as well as currently feasible management applications and the best mathematical approaches and computer languages to use. The book also details specific applications to theory and management.
Proceedings of a symposium on warmwater fisheries held by the U.S. Forest Service at Scottsdale, AZ on June 4-8, 1991. Panels include: management opportunities and challenges: keys to better service; warmwater fisheries: a resource to be managed; artificial structures -- where they work and how to build them; where the fish come from; water level management; warmwater streams -- a strong current for quality management; non-traditional fishing holes; fertilization and forage fish management; hooking mortality; harvest regulations; recreational fishing; and the role of education in fisheries management. Illustrated.