Ecology of Fire-Dependent Ecosystems

Download Ecology of Fire-Dependent Ecosystems PDF Online Free

Author :
Publisher : CRC Press
ISBN 13 : 0429944934
Total Pages : 540 pages
Book Rating : 4.4/5 (299 download)

DOWNLOAD NOW!


Book Synopsis Ecology of Fire-Dependent Ecosystems by : Devan Allen McGranahan

Download or read book Ecology of Fire-Dependent Ecosystems written by Devan Allen McGranahan and published by CRC Press. This book was released on 2020-12-29 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ecology of Fire-Dependent Ecosystems is brimming with intriguing ecological stories of how life has evolved with and diversified within the varied fire regimes that are experienced on earth. Moreover, the book places itself as a communication between students, fire scientists, and fire fighters, and each of these groups will find some familiar ground, and some challenging aspects in this text: something which ultimately will help to bring us closer together and enrich our different approaches to understanding and managing our changing planet. -- Sally Archibald, Professor, University of the Witwatersrand, Johannesburg, South Africa Most textbooks are as dry as kindling and about as much fun to sink your teeth into. This is not that kind of textbook. Devan Allen McGranahan and Carissa L. Wonkka have taken a complex topic and somehow managed to synthesize it into a comprehensive, yet digestible form. This is a book you can read cover to cover – I know, I did it. As a result, I took an enlightening journey through the history and fundamentals of fire and its role in the natural and human world, ending with a thoughtful review of the evolving relationship between humans and wildland fire. -- Chris Helzer, Nebraska Director of Science, The Nature Conservancy, and author of The Prairie Ecologist blog Ecology of Fire-Dependent Ecosystems: Wildland Fire Science, Policy, and Management is intended for use in upper-level courses in fire ecology and wildland fire management and as a reference for researchers, managers, and other professionals involved with wildland fire science, practice, and policy. The book helps guide students and scientists to design and conduct robust wildland fire research projects and critically interpret and apply fire science in any management, education, or policy situation. It emphasizes variability in wildland fire as an ecological regime and provides tools for students, researchers, and managers to assess and connect fire environment and fire behaviour to fire effects. Fire has not only shaped social and ecological communities but pushed ecosystems beyond previous boundaries, yet understanding the nature and effects of fire as an ecological disturbance has been slow, hampered by the complexity of the dynamic interactions between vegetation and climate and the fear of the destruction fire can bring. This book will help those who study, manage, and use wildland fire to develop new answers and novel solutions, based on an understanding of how fire functions in natural and social environments. It reviews literature, synthesizes concepts, and identifies research gaps and policy needs. The text also explores the interaction of fire and human culture, demonstrating how fire policy can be made adaptable to cultural and socio-ecological objectives.

Fire Ecology and Management: Past, Present, and Future of US Forested Ecosystems

Download Fire Ecology and Management: Past, Present, and Future of US Forested Ecosystems PDF Online Free

Author :
Publisher : Springer Nature
ISBN 13 : 3030732673
Total Pages : 513 pages
Book Rating : 4.0/5 (37 download)

DOWNLOAD NOW!


Book Synopsis Fire Ecology and Management: Past, Present, and Future of US Forested Ecosystems by : Cathryn H. Greenberg

Download or read book Fire Ecology and Management: Past, Present, and Future of US Forested Ecosystems written by Cathryn H. Greenberg and published by Springer Nature. This book was released on 2021-10-01 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edited volume presents original scientific research and knowledge synthesis covering the past, present, and potential future fire ecology of major US forest types, with implications for forest management in a changing climate. The editors and authors highlight broad patterns among ecoregions and forest types, as well as detailed information for individual ecoregions, for fire frequencies and severities, fire effects on tree mortality and regeneration, and levels of fire-dependency by plant and animal communities. The foreword addresses emerging ecological and fire management challenges for forests, in relation to sustainable development goals as highlighted in recent government reports. An introductory chapter highlights patterns of variation in frequencies, severities, scales, and spatial patterns of fire across ecoregions and among forested ecosystems across the US in relation to climate, fuels, topography and soils, ignition sources (lightning or anthropogenic), and vegetation. Separate chapters by respected experts delve into the fire ecology of major forest types within US ecoregions, with a focus on the level of plant and animal fire-dependency, and the role of fire in maintaining forest composition and structure. The regional chapters also include discussion of historic natural (lightning-ignited) and anthropogenic (Native American; settlers) fire regimes, current fire regimes as influenced by recent decades of fire suppression and land use history, and fire management in relation to ecosystem integrity and restoration, wildfire threat, and climate change. The summary chapter combines the major points of each chapter, in a synthesis of US-wide fire ecology and forest management into the future. This book provides current, organized, readily accessible information for the conservation community, land managers, scientists, students and educators, and others interested in how fire behavior and effects on structure and composition differ among ecoregions and forest types, and what that means for forest management today and in the future.

The Landscape Ecology of Fire

Download The Landscape Ecology of Fire PDF Online Free

Author :
Publisher : Springer Science & Business Media
ISBN 13 : 9400703015
Total Pages : 320 pages
Book Rating : 4.4/5 (7 download)

DOWNLOAD NOW!


Book Synopsis The Landscape Ecology of Fire by : Donald McKenzie

Download or read book The Landscape Ecology of Fire written by Donald McKenzie and published by Springer Science & Business Media. This book was released on 2011-01-04 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global warming is expected to change fire regimes, likely increasing the severity and extent of wildfires in many ecosystems around the world. What will be the landscape-scale effects of these altered fire regimes? Within what theoretical contexts can we accurately assess these effects? We explore the possible effects of altered fire regimes on landscape patch dynamics, dominant species (tree, shrub, or herbaceous) and succession, sensitive and invasive plant and animal species and communities, and ecosystem function. Ultimately, we must consider the human dimension: what are the policy and management implications of increased fire disturbance, and what are the implications for human communities?

The Ecological Importance of Mixed-Severity Fires

Download The Ecological Importance of Mixed-Severity Fires PDF Online Free

Author :
Publisher : Elsevier
ISBN 13 : 0128027606
Total Pages : 450 pages
Book Rating : 4.1/5 (28 download)

DOWNLOAD NOW!


Book Synopsis The Ecological Importance of Mixed-Severity Fires by : Dominick A DellaSala

Download or read book The Ecological Importance of Mixed-Severity Fires written by Dominick A DellaSala and published by Elsevier. This book was released on 2015-06-08 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Ecological Importance of High-Severity Fires, presents information on the current paradigm shift in the way people think about wildfire and ecosystems. While much of the current forest management in fire-adapted ecosystems, especially forests, is focused on fire prevention and suppression, little has been reported on the ecological role of fire, and nothing has been presented on the importance of high-severity fire with regards to the maintenance of native biodiversity and fire-dependent ecosystems and species. This text fills that void, providing a comprehensive reference for documenting and synthesizing fire's ecological role. Offers the first reference written on mixed- and high-severity fires and their relevance for biodiversity Contains a broad synthesis of the ecology of mixed- and high-severity fires covering such topics as vegetation, birds, mammals, insects, aquatics, and management actions Explores the conservation vs. public controversy issues around megafires in a rapidly warming world

Fire in California's Ecosystems

Download Fire in California's Ecosystems PDF Online Free

Author :
Publisher : Univ of California Press
ISBN 13 : 0520961919
Total Pages : 568 pages
Book Rating : 4.5/5 (29 download)

DOWNLOAD NOW!


Book Synopsis Fire in California's Ecosystems by : Jan W. van Wagtendonk

Download or read book Fire in California's Ecosystems written by Jan W. van Wagtendonk and published by Univ of California Press. This book was released on 2018-06-08 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fire in California’s Ecosystems describes fire in detail—both as an integral natural process in the California landscape and as a growing threat to urban and suburban developments in the state. Written by many of the foremost authorities on the subject, this comprehensive volume is an ideal authoritative reference tool and the foremost synthesis of knowledge on the science, ecology, and management of fire in California. Part One introduces the basics of fire ecology, including overviews of historical fires, vegetation, climate, weather, fire as a physical and ecological process, and fire regimes, and reviews the interactions between fire and the physical, plant, and animal components of the environment. Part Two explores the history and ecology of fire in each of California's nine bioregions. Part Three examines fire management in California during Native American and post-Euro-American settlement and also current issues related to fire policy such as fuel management, watershed management, air quality, invasive plant species, at-risk species, climate change, social dynamics, and the future of fire management. This edition includes critical scientific and management updates and four new chapters on fire weather, fire regimes, climate change, and social dynamics.

Fire Ecology of Florida and the Southeastern Coastal Plain

Download Fire Ecology of Florida and the Southeastern Coastal Plain PDF Online Free

Author :
Publisher : University Press of Florida
ISBN 13 : 081305219X
Total Pages : 359 pages
Book Rating : 4.8/5 (13 download)

DOWNLOAD NOW!


Book Synopsis Fire Ecology of Florida and the Southeastern Coastal Plain by : Reed F. Noss

Download or read book Fire Ecology of Florida and the Southeastern Coastal Plain written by Reed F. Noss and published by University Press of Florida. This book was released on 2018-05-15 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: A biodiversity hotspot, Florida is home to many ecosystems and species that evolved in the presence of frequent fire. In this book, Reed Noss discusses the essential role of fire in generating biodiversity and offers best practices for using fire to keep the region's ecosystems healthy and resilient. Reviewing several lines of evidence, Noss shows that fire has been important to the southeastern Coastal Plain for tens of millions of years. He explains how the region's natural fire regimes are connected to its climate, high rate of lightning strikes, physical chemistry, and vegetation. But urbanization and active fire suppression have reduced the frequency and extent of fires. Noss suggests the practice of controlled burning can and should be improved to protect fire-dependent species and natural communities from decline and extinction. Noss argues that fire managers should attempt to simulate natural fire regimes when conducting controlled burns. Based on what the species of the Southeast likely experienced during their evolutionary histories, he makes recommendations about pyrodiversity, how often and in what seasons to burn, the optimal heterogeneity of burns, mechanical treatments such as cutting and roller-chopping, and the proper use of fuel breaks. In doing so, Noss is the first to apply the new discipline of evolutionary fire ecology to a specific region. This book is a fascinating history of fire ecology in Florida, an enlightening look at why fire matters to the region, and a necessary resource for conservationists and fire managers in the state and elsewhere.

Forest Fires

Download Forest Fires PDF Online Free

Author :
Publisher : Elsevier
ISBN 13 : 0080506747
Total Pages : 594 pages
Book Rating : 4.0/5 (85 download)

DOWNLOAD NOW!


Book Synopsis Forest Fires by : Edward A. Johnson

Download or read book Forest Fires written by Edward A. Johnson and published by Elsevier. This book was released on 2001-03-01 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt: Even before the myth of Prometheus, fire played a crucial ecological role around the world. Numerous plant communities depend on fire to generate species diversity in both time and space. Without fire such ecosystems would become sterile monocultures. Recent efforts to prohibit fire in fire dependent communities have contributed to more intense and more damaging fires. For these reasons, foresters, ecologists, land managers, geographers, and environmental scientists are interested in the behavior and ecological effects of fires. This book will be the first to focus on the chemistry and physics of fire as it relates to the ways in which fire behaves and the impacts it has on ecosystem function. Leading international contributors have been recruited by the editors to prepare a didactic text/reference that will appeal to both advanced students and practicing professionals.

The Ecology of Fire

Download The Ecology of Fire PDF Online Free

Author :
Publisher : Cambridge University Press
ISBN 13 : 0521328721
Total Pages : 364 pages
Book Rating : 4.5/5 (213 download)

DOWNLOAD NOW!


Book Synopsis The Ecology of Fire by : Robert J. Whelan

Download or read book The Ecology of Fire written by Robert J. Whelan and published by Cambridge University Press. This book was released on 1995-08-10 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wildfires kill many animals, but are populations of animals affected? How do animals survive the passage of fire? Why do some tree species survive and others die in a fire? Do frequent fires cause changes in plant community composition? Answering questions such as these requires an understanding of the ecological effects of fire. Aimed at senior undergraduate students, researchers, foresters and other land managers, Dr Whelan's book examines the changes wrought by fires with reference to general ecological theory. The impacts of fires on individual organisms, populations and communities are examined separately, and emphasis is placed on the importance of fire regime. Each chapter includes a listing of 'outstanding questions' that identify gaps in current knowledge. The book finishes by summarising the major aspects of ecology that are of particular relevance to management of fires - both protection against wildfires and deliberate use of fire.

Fire in California's Ecosystems

Download Fire in California's Ecosystems PDF Online Free

Author :
Publisher : Univ of California Press
ISBN 13 : 0520246055
Total Pages : 613 pages
Book Rating : 4.5/5 (22 download)

DOWNLOAD NOW!


Book Synopsis Fire in California's Ecosystems by : Neil G. Sugihara

Download or read book Fire in California's Ecosystems written by Neil G. Sugihara and published by Univ of California Press. This book was released on 2006-11-29 with total page 613 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focusing on California and issues specific to fire ecology and management in the state's bioregions, this work provides scientific information for use in land restoration and other management decisions made in the field. It introduces the basics of fire ecology, and includes an overview of fire, vegetation and climate in California; and more.

Painting the Landscape with Fire

Download Painting the Landscape with Fire PDF Online Free

Author :
Publisher : Univ of South Carolina Press
ISBN 13 : 1611172470
Total Pages : 232 pages
Book Rating : 4.6/5 (111 download)

DOWNLOAD NOW!


Book Synopsis Painting the Landscape with Fire by : Den Latham

Download or read book Painting the Landscape with Fire written by Den Latham and published by Univ of South Carolina Press. This book was released on 2013-06-25 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fire can be a destructive, deadly element of nature, capable of obliterating forests, destroying homes, and taking lives. Den Latham’s Painting the Landscape with Fire describes this phenomenon but also tells a different story, one that reveals the role of fire ecology in healthy, dynamic forests. Fire is a beneficial element which allows the longleaf forests of America’s Southeast to survive. In recent decades, foresters and landowners have become intensely aware of the need to “put enough fire on the ground” to preserve longleaf habitat for red-cockaded woodpeckers, quail, wild turkeys, and a host of other plants and animals. Painting the Landscape with Fire is a hands-on-primer for those who want to understand the role of fire in longleaf forests. Latham joins wildlife biologists, foresters, wildfire fighters, and others as they band and translocate endangered birds, survey snake populations, improve wildlife habitat, and conduct prescribed burns on public and private lands. Painting the Landscape with Fire explores the unique southern biosphere of longleaf forests. Throughout, Latham beautifully tells the story of the resilience of these woodlands and of the resourcefulness of those who work to see them thrive. Fire is destructive in the case of accidents, arson, or poor policy, but with the right precautions and safety measures, it is the glowing life force that these forests need.

Fire on Earth

Download Fire on Earth PDF Online Free

Author :
Publisher : John Wiley & Sons
ISBN 13 : 1118534093
Total Pages : 434 pages
Book Rating : 4.1/5 (185 download)

DOWNLOAD NOW!


Book Synopsis Fire on Earth by : Andrew C. Scott

Download or read book Fire on Earth written by Andrew C. Scott and published by John Wiley & Sons. This book was released on 2013-10-31 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: Earth is the only planet known to have fire. The reason isboth simple and profound: fire exists because Earth is the onlyplanet to possess life as we know it. Fire is an expression of lifeon Earth and an index of life’s history. Few processes are asintegral, unique, or ancient. Fire on Earth puts fire in its rightful place as anintegral part of the study of geology, biology, human history,physics, and global chemistry. Fire is ubiquitous in various formsthroughout Earth, and belongs as part of formal inquiries about ourworld. In recent years fire literature has multipliedexponentially; dedicated journals exist and half a dozeninternational conferences are held annually. A host of formalsciences, or programs announcing interdisciplinary intentions, arewilling to consider fire. Wildfire also appears routinely in mediareporting. This full-colour text, containing over 250 illustrations of firein all contexts, is designed to provide a synthesis of contemporarythinking; bringing together the most powerful concepts anddisciplinary voices to examine, in an international setting, whyplanetary fire exists, how it works, and why it looks the way itdoes today. Students, lecturers, researchers and professionalsinterested in the physical, ecological and historicalcharacteristics of fire will find this book, and accompanyingweb-based material, essential reading for undergraduate andpostgraduate courses in all related disciplines, for generalinterest and for providing an interdisciplinary foundation forfurther study. A comprehensive approach to the history, behaviour andecological effects of fire on earth Timely introduction to this important subject, with relevancefor global climate change, biodiversity loss and the evolution ofhuman culture. Provides a foundation for the interdisciplinary field of FireResearch Authored by an international team of leading experts in thefield Associated website provides additional resources

Tropical Fire Ecology

Download Tropical Fire Ecology PDF Online Free

Author :
Publisher : Springer Science & Business Media
ISBN 13 : 3540773819
Total Pages : 696 pages
Book Rating : 4.5/5 (47 download)

DOWNLOAD NOW!


Book Synopsis Tropical Fire Ecology by : Mark Cochrane

Download or read book Tropical Fire Ecology written by Mark Cochrane and published by Springer Science & Business Media. This book was released on 2010-04-11 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt: The tropics are home to most of the world’s biodiversity and are currently the frontier for human settlement. Tropical ecosystems are being converted to agricultural and other land uses at unprecedented rates. Land conversion and maintenance almost always rely on fire and, because of this, fire is now more prevalent in the tropics than anywhere else on Earth. Despite pervasive fire, human settlement and threatened biodiversity, there is little comprehensive information available on fire and its effects in tropical ecosystems. Tropical deforestation, especially in rainforests, has been widely documented for many years. Forests are cut down and allowed to dry before being burned to remove biomass and release nutrients to grow crops. However, fires do not always stop at the borders of cleared forests. Tremendously damaging fires are increasingly spreading into forests that were never evolutionarily prepared for wild fires. The largest fires on the planet in recent decades have occurred in tropical forests and burned millions of hectares in several countries. The numerous ecosystems of the tropics have differing levels of fire resistance, resilience or dependence. At present, there is little appreciation of the seriousness of the wild fire situation in tropical rainforests but there is even less understanding of the role that fire plays in the ecology of many fire adapted tropical ecosystems, such as savannas, grasslands and other forest types.

Ecological Foundations for Fire Management in North American Forest and Shrubland Ecosystems

Download Ecological Foundations for Fire Management in North American Forest and Shrubland Ecosystems PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 102 pages
Book Rating : 4.:/5 (319 download)

DOWNLOAD NOW!


Book Synopsis Ecological Foundations for Fire Management in North American Forest and Shrubland Ecosystems by :

Download or read book Ecological Foundations for Fire Management in North American Forest and Shrubland Ecosystems written by and published by . This book was released on 2009 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: This synthesis provides an ecological foundation for management of the diverse ecosystems and fire regimes of North America, based on scientific principles of fire interactions with vegetation, fuels, and biophysical processes. Although a large amount of scientific data on fire exists, most of those data have been collected at small spatial and temporal scales. Thus, it is challenging to develop consistent science-based plans for large spatial and temporal scales where most fire management and planning occur. Understanding the regional geographic context of fire regimes is critical for developing appropriate and sustainable management strategies and policy. The degree to which human intervention has modified fire frequency, intensity, and severity varies greatly among different ecosystems, and must be considered when planning to alter fuel loads or implement restorative treatments. Detailed discussion of six ecosystems--ponderosa pine forest (western North America), chaparral (California), boreal forest (Alaska and Canada), Great Basin sagebrush (intermountain West), pine and pine-hardwood forests (Southern Appalachian Mountains), and longleaf pine (Southeastern United States)-- illustrates the complexity of fire regimes and that fire management requires a clear regional focus that recognizes where conflicts might exist between fire hazard reduction and resource needs. In some systems, such as ponderosa pine, treatments are usually compatible with both fuel reduction and resource needs, whereas in others, such as chaparral, the potential exists for conflicts that need to be closely evaluated. Managing fire regimes in a changing climate and social environment requires a strong scientific basis for developing fire management and policy.

Fire and Ecosystems

Download Fire and Ecosystems PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 756 pages
Book Rating : 4.3/5 (91 download)

DOWNLOAD NOW!


Book Synopsis Fire and Ecosystems by : Theodore Thomas Kozlowski

Download or read book Fire and Ecosystems written by Theodore Thomas Kozlowski and published by . This book was released on 1974 with total page 756 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes reference to use of fire by man in ethnographic examples.

Living with Fire

Download Living with Fire PDF Online Free

Author :
Publisher : Univ of California Press
ISBN 13 : 0520942515
Total Pages : 193 pages
Book Rating : 4.5/5 (29 download)

DOWNLOAD NOW!


Book Synopsis Living with Fire by : Sara E. Jensen

Download or read book Living with Fire written by Sara E. Jensen and published by Univ of California Press. This book was released on 2008-08-04 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fire, both inevitable and ubiquitous, plays a crucial role in North American ecosystems. But as necessary as fire is to maintaining healthy ecosystems, it threatens human lives and livelihoods in unacceptable ways. This volume explores the rich yet largely uncharted terrain at the intersection of fire policy, fire science, and fire management in order to find better ways of addressing this pressing dilemma. Written in clear language, it will help scientists, policy makers, and the general public, especially residents of fire-prone areas, better understand where we are today in regard to coping with wildfires, how we got here, and where we need to go. Drawing on abundant historical and analytic information to shed new light on current controversies, Living with Fire offers a dynamic new paradigm for coping with fire that recognizes its critical environmental role. The book also tells how we can rebuild the important ecological and political processes that are necessary for finding better ways to cope with fire and with other complex policy dilemmas.

Wildland Fire in Ecosystems

Download Wildland Fire in Ecosystems PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 268 pages
Book Rating : 4.:/5 (89 download)

DOWNLOAD NOW!


Book Synopsis Wildland Fire in Ecosystems by :

Download or read book Wildland Fire in Ecosystems written by and published by . This book was released on 2000 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Fire Ecology and Management of the Major Ecosystems of Southern Utah

Download Fire Ecology and Management of the Major Ecosystems of Southern Utah PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 124 pages
Book Rating : 4.:/5 (319 download)

DOWNLOAD NOW!


Book Synopsis Fire Ecology and Management of the Major Ecosystems of Southern Utah by :

Download or read book Fire Ecology and Management of the Major Ecosystems of Southern Utah written by and published by . This book was released on 2007 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document provides managers with a literature synthesis of the historical conditions, current conditions, fire regime condition classes (FRCC), and recommended treatments for the major ecosystems in southern Utah. Sections are by ecosystems and include: 1) coniferous forests (ponderosa pine, mixed conifer, and Engelmann spruce-subalpine fir), 2) aspen, 3) pinyon-juniper, 4) big and black sagebrush, and 5) desert shrubs (creosotebush, blackbrush, and interior chaparral). Southern Utah is at the ecological crossroads for much of the western United States. It contains steep environmental gradients and a broad range of fuels and fire regimes associated with vegetation types representative of the Rocky Mountains, the Great Basin, Northern Arizona and New Mexico, and the Mohave Desert. The Southern Utah Demonstration Area consists of contiguous state and federal lands within the administrative boundaries of the Bureau of Land Management (BLM), Fishlake and Dixie National Forests, National Park Sevice, and State of Utah, roughly encompassing the southern 15 percent of Utah (3.24 million ha). The vegetation types described are similar in species composition, stand structure, and ecologic function, including fire regime to vegetation types found on hundreds of millions of hectares in the 11 western states.