Isbn: 9781332307616 - survey of the columbia river and its tributaries part v, vol. 38: special scientific report: fisheries no; 38 (classic reprint) (4 Ergebnisse)

PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000.

Paperback. Zustand: New. Print on Demand. This book is a detailed and descriptive study of the fish and wildlife resources of the Columbia River and its tributaries, presenting the findings of the Columbia River Stream Survey. The survey was conducted under the direction of the United States Fish and Wildlife Service in the late 1930s and early 1940s, and was designed to assess the condition of salmon and steelhead resources, as well as to identify potential areas for restoration and improvement. The data collected includes observations on water flow, temperature, stream gradients, potential spawning and rearing areas, and barriers to fish migration. The book also includes detailed descriptions of the dams, irrigation diversions, and other modifications to the river system that were present at the time of the survey. This book provides a wealth of baseline data that is essential for understanding the historical condition of the Columbia River system and its salmon and steelhead populations, and serves as a valuable resource for researchers, managers, and anyone interested in the history and ecology of the Pacific Northwest. 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.…

Zustand: Hervorragend. Zustand: Hervorragend | Seiten: 50 | Sprache: Englisch | Produktart: Bücher | Keine Beschreibung verfügbar.