Download or read book South Fork Flathead Watershed Westslope Cutthroat Trout Conservation Program written by and published by . This book was released on 2005 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Entirely Synthetic Fish written by Anders Halverson and published by Yale University Press. This book was released on 2010-03-02 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anders Halverson provides an exhaustively researched and grippingly rendered account of the rainbow trout and why it has become the most commonly stocked and controversial freshwater fish in the United States. Discovered in the remote waters of northern California, rainbow trout have been artificially propagated and distributed for more than 130 years by government officials eager to present Americans with an opportunity to get back to nature by going fishing. Proudly dubbed an entirely synthetic fish by fisheries managers, the rainbow trout has been introduced into every state and province in the United States and Canada and to every continent except Antarctica, often with devastating effects on the native fauna. Halverson examines the paradoxes and reveals a range of characters, from nineteenth-century boosters who believed rainbows could be the saviors of democracy to twenty-first-century biologists who now seek to eradicate them from waters around the globe. Ultimately, the story of the rainbow trout is the story of our relationship with the natural world--how it has changed and how it startlingly has not.
Download or read book General Technical Report PNW GTR written by and published by . This book was released on 2005 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Amphibian Declines written by Michael Lannoo and published by Univ of California Press. This book was released on 2005-06-15 with total page 1117 pages. Available in PDF, EPUB and Kindle. Book excerpt: This benchmark volume documents in comprehensive detail a major environmental crisis: rapidly declining amphibian populations and the disturbing developmental problems that are increasingly prevalent within many amphibian species. Horror stories on this topic have been featured in the scientific and popular press over the past fifteen years, invariably asking what amphibian declines are telling us about the state of the environment. Are declines harbingers of devastated ecosystems or simply weird reflections of a peculiar amphibian world? This compendium—presenting new data, reviews of current literature, and comprehensive species accounts—reinforces what scientists have begun to suspect, that amphibians are a lens through which the state of the environment can be viewed more clearly. And, that the view is alarming and presages serious concerns for all life, including that of our own species. The first part of this work consists of more than fifty essays covering topics from the causes of declines to conservation, surveys and monitoring, and education. The second part consists of species accounts describing the life history and natural history of every known amphibian species in the United States.
Download or read book New Publications written by and published by . This book was released on 2002 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecology of the Columbia Spotted Frog in Northeastern Oregon written by Evelyn L. Bull and published by . This book was released on 2005 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Columbia spotted frog (Rana luteiventris) is one of several amphibians in the Western United States experiencing population declines. The breeding, postbreeding, and overwintering habitat and ecology of this species were investigated in 10 study sites in northeastern Oregon from 1997 through 2004. A variety of habitats with permanent water were used as breeding sites and as postbreeding habitat during the summer. Ice-covered ponds, warm springs, rivers, and seeps in forested habitats were used for overwintering. Diet consisted of a wide variety of mollusks and arthropods with beetles, ants, wasps, and flies composing more than 50 percent. Population size was as high as 135 females at one site, and ratios of males to females ranged from 1.0 to 2.8. The oldest male and female were 9.7 and 8.7 years old, respectively, based on skeletochronology. Males reached sexual maturity at 1 year 9 months after metamorphosis and most females at 2 years 9 months after metamorphosis. One female laid eggs in up to 3 consecutive years. Size (snout-vent length) was not a good indicator of age in frogs older than 2 years. Long-term monitoring is necessary to determine the effects of a variety of disturbance factors and chytrid fungus that could influence spotted frog populations in northeastern Oregon.
Download or read book Ecotoxicology of Amphibians and Reptiles written by Donald W. Sparling and published by CRC Press. This book was released on 2010-06-02 with total page 946 pages. Available in PDF, EPUB and Kindle. Book excerpt: Building on the success of its popular predecessor, the second edition of Ecotoxicology of Amphibians and Reptiles presents newly available findings on the species that are important environmental indicators. This new edition covers nearly twice as many topics as the first, including recent developments in the ecotoxicology of amphibians and reptil
Download or read book Preserving Western History written by Andrew Gulliford and published by UNM Press. This book was released on 2005 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first collection of essays on public history in the American West.
Download or read book North Cascades National Park N P Mountain Lakes Fishery Management Plan written by and published by . This book was released on 2008 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Making Rocky Mountain National Park written by Jerry J. Frank and published by University Press of Kansas. This book was released on 2013-09-03 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: On September 4, 1915, hundreds of people gathered in Estes Park, Colorado, to celebrate the creation of Rocky Mountain National Park. This new nature preserve held the promise of peace, solitude, and rapture that many city dwellers craved. As Jerry Frank demonstrates, however, the park is much more than a lovely place. Rocky Mountain National Park was a keystone in broader efforts to create the National Park Service, and its history tells us a great deal about Colorado, tourism, and ecology in the American West. To Frank, the tensions between tourism and ecology have played out across a natural stage that is anything but passive. At nearly every turn the National Park Service found itself face-to-face with an environment that was difficult to anticipate—and impossible to control. Frank first takes readers back to the late nineteenth century, when Colorado boosters—already touting the Rocky Mountains’ restorative power for lung patients—set out to attract more tourists and generate revenue for the state. He then describes how an ecological perspective came to Rocky in fits and starts, offering a new way of imagining the park that did not sit comfortably with an entrenched management paradigm devoted to visitor recreation and comfort. Frank examines a wide range of popular activities including driving, hiking, skiing, fishing, and wildlife viewing to consider how they have impacted the park’s flora and fauna, often leaving widespread transformation in their wake. He subjects the decisions of park officials to close but evenhanded scrutiny, showing how in their zeal to return the park to what they understood as its natural state, they have tinkered with its features—sometimes with less than desirable results. Today’s Rocky Mountain National Park serves both competing visions, maintaining accessible roads and vistas for the convenience of tourists while guarding its backcountry to preserve ecological values. As the park prepares to celebrate its centennial, Frank’s book advances our understanding of its past while also providing an important touchstone for addressing its problems in the present and future.
Download or read book Bighorn National Forest N F Revised Land and Resource Management Plan written by and published by . This book was released on 2004 with total page 1166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Intentional Introductions and Biodiversity in Fishless Waters written by Karen Elizabeth Leyse and published by . This book was released on 2005 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Skadar Shkodra Lake Environment written by Vladimir Pešić and published by Springer. This book was released on 2018-10-15 with total page 507 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the unique ecosystem of the Lake Skadar/Shkodra and its basin, and discusses the latest advances made in this region to face the impact of climate change. Divided into 23 chapters, the book gathers leading expertise from various scientific and engineering communities and provides readers with extensive discussions of core issues, including the water and sediment chemistry of Lake Skadar/Shkodra and the metal pollution that is evident in plants, aquatic invertebrates and fish. Readers will discover how a sustainable science-based management approach can be applied to the Lake Skadar/Shkodra region, and will learn about the environment prospects for the region. This book is intended as an essential tool for all scientists interested in the Lake Skadar/Shkodra environment – in particular those investigating the interactions between land and water, between limnology and biota, and between natural and cultural resources.
Download or read book Canadian Journal of Fisheries and Aquatic Sciences written by and published by . This book was released on 2011-09 with total page 750 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Frogs of the United States and Canada written by C. Kenneth Dodd Jr. and published by JHU Press. This book was released on 2023-06-20 with total page 991 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The premiere reference book on the 108 species of frogs inhabiting North America north of Mexico. An unparalleled synthesis of the biology and behavior of all native and nonindigenous species, this two-volume, extensively referenced resource has been called the most important book ever published on North American anura. Color photographs and range maps accompany species accounts detailing information on etymology, nomenclature, identification, distribution, fossil record, systematics and geographic variation, life history and ecology, behavior, population and community biology, and conservation. This new edition of the text contains the following updates: Literature citations have been added from 2012 to 2021, now spanning from 1709 to 2021. Distribution maps have been updated, recording the decreased ranges due to declining amphibian populations. Photographs have been revised to ensure the highest digital quality. Anaxyrus williamsi and Lithobates kauffeldi, newly described species, have been included. An account is also included for Gastrophryne mazatlanensis, now recognized as occurring within the United States. Generic keys have been added. A brief section on N.A. frogs in history and art have been added. Nomenclature has been updated (Incilius for Ollotis). Now the only up-to-date and comprehensive resource for those trying to protect amphibians in the US and Canada, as well as for researchers and wildlife managers who study biodiversity"--
Download or read book The Atlantic Salmon written by Eric Verspoor and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atlantic Salmon is a cultural icon throughout its North Atlantic range; it is the focus of probably the World’s highest profile recreational fishery and is the basis for one of the World’s largest aquaculture industries. Despite this, many wild stocks of salmon are in decline and underpinning this is a dearth of information on the nature and extent of population structuring and adaptive population differentiation, and its implications for species conservation. This important new book will go a long way to rectify this situation by providing a thorough review of the genetics of Atlantic salmon. Sponsored by the European Union and the Atlantic Salmon Trust, this book comprises the work of an international team of scientists, carefully integrated and edited to provide a landmark book of vital interest to all those working with Atlantic salmon.
Download or read book From Conquest to Conservation written by Michael P. Dombeck and published by . This book was released on 2003-02 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: From Conquest to Conservation is a visionary new work from three of the nation’s most knowledgeable experts on public lands. As chief of the Forest Service, Mike Dombeck became a lightning rod for public debate over issues such as the management of old-growth forests and protecting roadless areas. Dombeck also directed the Bureau of Land Management from 1994 to 1997 and is the only person ever to have led the two largest land management agencies in the United States. Chris Wood and Jack Williams have similarly spent their careers working to steward public resources, and the authors bring unparalleled insight into the challenges facing public lands and how those challenges can be met. Here, they examine the history of public lands in the United States and consider the most pressing environmental and social problems facing public lands. Drawing heavily on fellow Forest Service employee Aldo Leopold’s land ethic, they offer specific suggestions for new directions in policy and management that can help maintain and restore the health, diversity, and productivity of public land and water resources, both now and into the future. Also featured are lyrical and heartfelt essays from leading writers, thinkers, and scientists— including Bruce Babbitt, Rick Bass, Patricia Nelson Limerick, and Gaylord Nelson—about the importance of public lands and the threats to them, along with original drawings by William Millonig.
