9781333402785 - the long-term illinois river fish population monitoring program, f-101-r-8 (classic reprint): annual report; december, 1997: annual report; december, 1997 (classic reprint) di koel, todd marvin (3 risultati)

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

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

Paperback. Condizione: New. Print on Demand. This book gives an in-depth perspective of an environmental study conducted on the Illinois River between 1957 and 1996. The author analyzes the river's fish population using electrofishing methods to track changes over almost four decades, with detailed findings from 1996. The author presents data on the abundance of fish species, their distribution across the river's various segments, and their health, as determined by external visual inspection. The outcomes reveal the prominence of gizzard shad as the most abundant species and highlight the worrying decline in the population of small cyprinids such as emerald shiners in the river's upper reaches. Additionally, the study demonstrates a gradual recovery in the population of several sport fishes such as white bass and bluegill. The book is a valuable resource for scientists, policymakers, and anyone interested in river ecology and the impact of human activities on aquatic ecosystems. 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.…