Product details
- Publisher : National Academies Press (July 5, 2002)
- Language : English
- Hardcover : 212 pages
- ISBN-10 : 0309082641
- ISBN-13 : 978-0309082648
- Item Weight : 1.02 pounds
- Dimensions : 6 x 0.72 x 9.5 inches
$58.00
Nonindigenous plants and plant pests that find their way to the United States and become invasive can often cause problems. They cost more than $100 billion per year in crop and timber losses plus the expense of herbicides and pesticides. And this figure does not include the costs of invasions in less intensively managed ecosystems such as wetlands.
Nonindigenous Plants and Plant Pests examines this growing problem and offers recommendations for enhancing the science base in this field, improving our detection of potential invaders, and refining our ability to predict their impact.
The book analyzes the factors that shape an invader’s progress through four stages: arriving through one of many possible ports of entry, reaching a threshold of survival, thriving through proliferation and geographic spread, and ultimate impact on the organism’s new environment. The book also reviews approaches to predicting whether a species will become an invader as well as the more complex challenge of predicting and measuring its impact on the environment, a process involving value judgments and risk assessment.
This detailed analysis will be of interest to policymakers, plant scientists, agricultural producers, environmentalists, and public agencies concerned with invasive plant and plant pest species.
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by António José Bento Gonçalves(Editor), António Avelino Batista Vieira(Editor), Maria Rosário Melo Costa(Editor), José Tadeu Marques Aranha(Editor)
The present book intends to outline different approaches regarding wildland fires, showing different perspectives and challenges present in the beginning of the 21st century and emerging in different case studies that reveal how wildfires are being faced in some countries around the world (Portugal, Spain, Brazil, Algeria, Mozambique, Lithuania and Chile). Therefore, this book includes fifteen valuable contributions that reflect its title: Wildfires: Perspectives, Issues and Challenges of the 21st Century. The first part of this book includes topics that expresses different realities and challenges on wildfire analysis in Europe, South America and Africa, in a total of six chapters. The second part of this book, entitled “New Perspectives and Methodologies on Wildfire Research”, which is composed of five chapters, is focused on the implementation of recent techniques and methodologies to promote wildfire knowledge and forest management. The last part is related to recent developments on soils and ashes analysis, and their off-site effects on water quality. It is composed of four chapters where these topics are discussed.
Paperback – September 26, 2011
1st Edition
Paperback – August 30, 1999
by Robert Burns(Author), Mike Schintz(Author)
Bears and bureaucrats, timber and telephone lines, poaching and predators, fires and families -- all these play a part in this fascinating and long-overdue study of Canadas National Park wardens. The Warden Service has been integral to Canadas National Parks from their earliest days. First established in Rocky Mountains Park (now Banff National Park) in 1909, the position of Fire and Game Guardian was the precursor of todays National Park Warden, whose duties now include resource management, law enforcement and public safety. Robert Burns traces the growth of the warden service from here, its formative years, and goes on to show how the role changed and developed according to the expanding park system, altered societal expectations, and technological change. Guardians of the Wild is a study of real people and their trials, triumphs and tragedies. This book creates a complete history where before there existed only sketchy accounts of single individuals and incidents. The need for such an account is undeniable; well-known historian Simon Evans describes this story as "one which deserves to be heard." Both a tribute to the enormous devotion to duty and dedicated labours of the park wardens, and a well-researched factual account of how our National Parks evolved, Guardians of the Wild is a singular study of the historical evolution of protection and management inside Canadas National Parks.
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