Beach nourishment and protection / National research council

Public ISBD Faire une suggestion d'achat Titre : Beach nourishment and protection Type de document : texte imprimé Auteurs : National research council, Auteur Editeur : National academy press Année de publication : 1995 Importance : XVI- 334 p. Format : 24 cm ISBN/ISSN/EAN : 9780309052904 Langues : Anglais (eng) Index. décimale : 627 Génie hydraulique Résumé : Many coastal communities have built structures at their beaches and added quantities of sand in contoured designs to combat erosion. Are such beach nourishment projects technically and economically sound? Or are they nothing more than building sand castles, as critics claim? Beach nourishment and protection provides a sound technical basis for decisionmaking, with recommendations regarding the utility of beach nourishment, the appropriate role of federal agencies, responsibility for cost, design methodology, and other issues. This volume examines the economic and social role of beaches, the history of beach nourishment projects, and management strategies for shore protection. It discusses the role of the U.S. Army Corps of Engineers and other federal agencies, with a close-up look at the federal flood insurance program; explores the state of the art in project design and prediction of outcomes, including the controversy over the use of traditional and nontraditional shore protection devices; addresses what is known about the environmental impacts of beach nourishment; and identifies what outcomes should be targeted for continued monitoring by project officials. Beach nourishment and protection [texte imprimé] / National research council, Auteur . - National academy press, 1995 . - XVI- 334 p. ; 24 cm. ISSN : 9780309052904 Langues : Anglais (eng) Index. décimale : 627 Génie hydraulique Résumé : Many coastal communities have built structures at their beaches and added quantities of sand in contoured designs to combat erosion. Are such beach nourishment projects technically and economically sound? Or are they nothing more than building sand castles, as critics claim? Beach nourishment and protection provides a sound technical basis for decisionmaking, with recommendations regarding the utility of beach nourishment, the appropriate role of federal agencies, responsibility for cost, design methodology, and other issues. This volume examines the economic and social role of beaches, the history of beach nourishment projects, and management strategies for shore protection. It discusses the role of the U.S. Army Corps of Engineers and other federal agencies, with a close-up look at the federal flood insurance program; explores the state of the art in project design and prediction of outcomes, including the controversy over the use of traditional and nontraditional shore protection devices; addresses what is known about the environmental impacts of beach nourishment; and identifies what outcomes should be targeted for continued monitoring by project officials.

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Fisheries technologies for developing countries / Sainsbury, John C.

Public ISBD Faire une suggestion d'achat Titre : Fisheries technologies for developing countries Type de document : texte imprimé Auteurs : Sainsbury, John C., Auteur Editeur : National academy press Année de publication : 1988 Importance : VII-168 p. Format : 23 cm ISBN/ISSN/EAN : 978-0-309-03788-4 Langues : Anglais (eng) Index. décimale : 639 Chasse et pêche commerciales, protection de la faune et la flore Résumé : The future of traditional fisheries will be shaped by the attention given to their special problems and by the recognition of their unique value. Declining stocks of readily accessible fish, competition from industrial fishermen, high operating costs, less than optimal gear and vessels, poor storage and marketing facilities, and little access to credit all tend to limit development for fishermen in the traditional sector. Culturally and economically acceptable technologies can help with some of these problems, but policy changes and interventions must also be part of the assistance strategy. The effort is worthwhile. Traditional fishermen are important contributors to the food supply in developing countries. They currently account for about one-quarter of the world's total fish catch-an estimated 20 million tons of a total of 80 million. Although only about one-fifth of the fish caught in Latin America come from the traditional sector, in Asia these fishermen provide two-thirds of the catch, and in Africa, five-sixths. Fisheries technologies for developing countries [texte imprimé] / Sainsbury, John C., Auteur . - National academy press, 1988 . - VII-168 p. ; 23 cm. ISBN : 978-0-309-03788-4 Langues : Anglais (eng) Index. décimale : 639 Chasse et pêche commerciales, protection de la faune et la flore Résumé : The future of traditional fisheries will be shaped by the attention given to their special problems and by the recognition of their unique value. Declining stocks of readily accessible fish, competition from industrial fishermen, high operating costs, less than optimal gear and vessels, poor storage and marketing facilities, and little access to credit all tend to limit development for fishermen in the traditional sector. Culturally and economically acceptable technologies can help with some of these problems, but policy changes and interventions must also be part of the assistance strategy. The effort is worthwhile. Traditional fishermen are important contributors to the food supply in developing countries. They currently account for about one-quarter of the world's total fish catch-an estimated 20 million tons of a total of 80 million. Although only about one-fifth of the fish caught in Latin America come from the traditional sector, in Asia these fishermen provide two-thirds of the catch, and in Africa, five-sixths.

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