Excerpt from Progress in Biological Inquiries, 1936<br/><br/>Knowledge of the variations in natural reproduction, growth, move ments, and local concentrations of the haddock, mackerel, squeteague, and other fishes on the Atlantic and Gulf coasts permits prediction of annual yields of some species to promote orderly and efficient market ing of the catch, directs the way to better utilization Of the fish supply through avoiding the waste of immature and unmarketable fish, and demonstrates the necessity of protecting the breeding and nursery grounds Of migratory coastal fishes by unified State action throughout the range of the fishery. A knowledge Of the reproduction, growth, and natural requirements Of the oyster recently obtained has laid the foundation for a great expansion of oyster farming in our coastal waters that may be relied upon to restore production of this valuable' food product to its former high levels when economic conditions permit. In interior waters, studies of stream pollution have made perma nent contribution to the restoration of recreational resources. Through this work an understanding of the effects of domestic sewage, industrial wastes, and other pollutants on aquatic life has been ao quired. Future efforts toward the purification of streams and the restoration of angling waters may therefore proceed along intelligently directed lines.
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Anbieter: Forgotten Books, London, Vereinigtes Königreich
Paperback. Zustand: New. Print on Demand. This book offers a comprehensive account of the biological research undertaken by the US Bureau of Fisheries, serving as a record of the sustained efforts made since 1936 in understanding and preserving valuable fish species. The findings presented in this extensive study contribute to the broader knowledge of aquatic life and fisheries management. The work highlights critical themes including stock analysis, growth studies, pollution effects, and investigations into the habits of commercially significant fish. The book provides an in-depth exploration of the Bureau's scientific inquiries, offering valuable insights into fish biology and the crucial role it plays in safeguarding aquatic ecosystems for future generations. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Bestandsnummer des Verkäufers 9780365888703_0
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PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Bestandsnummer des Verkäufers LW-9780365888703
Anbieter: PBShop.store UK, Fairford, GLOS, Vereinigtes Königreich
PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Bestandsnummer des Verkäufers LW-9780365888703
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