vernon applegate bernard smith (2 resultados)

Paperback. Condición: New. Print on Demand. This book explores the history and development of mechanical control devices for sea lampreys in the Great Lakes. The author provides a detailed account of the various types of weirs, traps, dams, and barriers used to capture or block the upstream migration of these parasitic fish. The book also includes an evaluation of the effectiveness of these devices and a discussion of the challenges and costs associated with implementing a large-scale sea lamprey control program. By presenting a comprehensive overview of the subject, this book serves as a valuable resource for professionals, researchers, and anyone interested in the history and science of sea lamprey control. 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.

Paperback. Condición: New. Print on Demand. This book investigates the development and evolution of electromechanical weirs and electrical barriers as a method of controlling sea lamprey populations. Following the author's initial experiments with an electromechanical weir and trap in 1951, the book moves into a detailed examination of 1952 experimental installations. Four pilot models, featuring suspended electrodes, submerged electrodes, and incremental and uniform electrical fields, were tested across Wisconsin and Michigan streams. The author takes the reader through the history of the project, presenting research data and discussing different methods and electrode configurations. The results outline the effectiveness of various electrical setups for blocking the movement of sea lampreys, with insights into power consumption, voltage gradients, electrode design, and environmental factors. The contents provide a blend of theoretical underpinnings and practical applications, offering a comprehensive study suitable for biologists, fishery professionals, and anyone interested in innovative approaches to wildlife management. 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.