This book provides a comprehensive guide to the various methods by which roundwood and the products of roundwood are measured around the world. It presents and compares many different log scaling methods in terms of procedures and conversion ratios. Topics covered include grading logs, log manufacturing quality, statistical sampling methods and methods for determining log yard inventories and mill log usage volume. Detailed tables of data, covering characteristics, and log weight to volume ratios, are presented for the main commercial timber species of the world. The drivers of roundwood...

This book examines the challenges faced by farmers trying to maintain crop biodiversity in developing and transitional economies. Using a collection of empirical case studies of farmers and crop scientists across a range of agricultural economies and income levels, it presents economic tools and methods for valuing and managing crop biodiversity. It discusses the economic benefits of crop biodiversity for farmers and suggests ways in which crop biodiversity can be supported by national policies. The book provides an indispensable -tool kit- for all those concerned with the development of...

Places with perceived high environmental quality and distinctive culture are globally attracting amenity migrants. Today this societal driving force is particularly manifest in mountain areas, and while beneficial for both the new comers and locals, is also threatening highland ecologies and their human communities. This book describes and analyzes the challenges and opportunities of amenity migration and its management, and offers related recommendations.

The book's chapters cover the subject through case studies at international, regional and local levels, along with overarching...

Thrips have recently surged to prominence as insect pests of field, plantation and glasshouse crops in many countries, associated with increased international trade in fresh vegetables, fruit, flowers and plant propagation material. They can cause direct feeding damage to the aerial parts of plants, resulting in yield loss and spoilage, and some are vectors of destructive plant viruses. Their minute size and secretive habits make them particularly difficult to detect and control. This book, containing contributions from several world authorities from Europe, the USA and Asia, is the most...

The World Leisure and Recreation Association (WLRA) held its fourth World Congress in Cardiff, Wales, in July 1996. The overall theme was -Leisure and the Quality of Life In the 21st Century-. At the congress, the Management Commission, the newest of WLRA's Commissions, attracted 78 papers in the management and access theme, from 16 countries.

This book presents edited and revised versions of 18 of the most significant papers from the management section of the congress. The papers are diverse in topic, focus and geography, but demonstrate the vigor and developing nature of...

Their natural beauty, exceptional variety and unique biology make birds (Aves) one of the most fascinating groups of animals. They are also of great importance to humans as food and as experimental subjects that have catalyzed significant advances in many areas of biological research. Central to our ability to maintain and develop these resources is a thorough understanding of avian nutrition.

This book presents, uniquely, all aspects of our current knowledge, drawn from such diverse disciplines as physiological ecology, poultry production, zoo biology and biomedical science. The...

Fire blight is a major disease of apples, pears and certain woody ornamental plants. It is caused by the bacterium Erwinia amylovora. This organism was one of the first plant pathogenic bacteria to be extensively investigated, and has become a model for study by bacteriologists in the development of their subject.

Written by leading research workers from the USA, Europe and New Zealand, this book is the first comprehensive volume for 20 years to address this subject.

Few people who are involved with the management of forests are comfortable with the accounting side of their role. This book is set out in an approachable and structured way, providing clear guidance for students and practitioners on how to proceed. The reader is lead through the subject, building up understanding in a series of steps, covering the methodology and rationale and accompanied by worked examples. Chapters cover the management process, the budgeting steps for profit, cash and capital, recording, accounts construction and appraisal, evaluation of alternative investments,...

Current pressures to maximize the use of forages in ruminant diets have renewed interest in fast, inexpensive methods for the estimation of their nutritional value. As a result, a wide variety of biological and physiochemical procedures have recently been investigated for this purpose. This book is the single definitive reference volume on the current status of research in this area.

*Covers all forages eaten by ruminant animals

Written by leading researchers from the USA, Canada and Europe, this is an essential reference tool for researchers and advanced students in animal nutrition. Farm livestock have evolved digestive systems that are capable of digesting fibrous materials and by-products unsuited for man. Throughout the world, production from farm livestock is concerned with providing food and clothing of animal origin for man. Animal production science underpins this goal and provides the scientific basis for livestock management practices. Feed evaluation concerns the use of methods to describe animal...