Download or read book Fundamentals of Tree Ring Research written by James H. Speer and published by University of Arizona Press. This book was released on 2010 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive text addresses all of the subjects that a reader who is new to the field will need to know and will be a welcome reference for practitioners at all levels. It includes a history of the discipline, biological and ecological background, principles of the field, basic scientific information on the structure and growth of trees, the complete range of dendrochronology methods, and a full description of each of the relevant subdisciplines.

Download or read book Radioecological Techniques written by Vincent Schultz and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the twenty years the authors have been associated with the field of radiation ecology, there has been a diversified and increasing use of radionuclides in applied and basic biological research. Prior to the advent of the atomic age in the 1940s the use of radionuclides as tracers was initiated, and following that period one observed a dramatically increased use in many disciplines. Concurrent with this increase there appeared many books and articles on radionuclide tech niques useful to biologists in general. Although only a few ecological applications were evident in these early years, ecologists were quick to see the opportunities available in their field. In the United States, major centers for such activities included Oak Ridge National Laboratory and the U. S. Atomic Energy Com mission's Savannah River Plant. At Oak Ridge National Laboratory Dr. Stanley I. Auerbach, director of ecological activities, encouraged with remarkable suc cess the use of tracers by his associates. Dr. Eugene P. Odum had the foresight to see that radionuclide tracers provided the means to solve many problems of interest to ecologists. Consequently, his research included some unique radio tracer applications at the Savannah River Plant. In addition he encouraged others involved in ecological activities at the Savannah River Plant to do likewise. Ecologists such as Dr. Robert C. Pendleton at the U. S. Atomic Energy Com mission's Hanford Works applied radionuclides in their research. To these early investigators and to those who followed we owe the oppportunity to write this book.

Download or read book Animal Dispersal written by N.C. Stenseth and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: 4.1.1 Demographic significance Confined populations grow more rapidly than populations from which dispersal is permitted (Lidicker, 1975; Krebs, 1979; Tamarin et at., 1984), and demography in island populations where dispersal is restricted differs greatly from nearby mainland populations (Lidicker, 1973; Tamarin, 1977, 1978; Gliwicz, 1980), clearly demonstrating the demographic signi ficance of dispersal. The prevalence of dispersal in rapidly expanding populations is held to be the best evidence for presaturation dispersal. Because dispersal reduces the growth rate of source populations, it is generally believed that emigration is not balanced by immigration, and that mortality of emigrants occurs as a result of movement into a 'sink' of unfavourable habitat. If such dispersal is age- or sex-biased, the demo graphy of the population is markedly affected, as a consequence of differ ences in mortality in the dispersive sex or age class. Habitat heterogeneity consequently underlies this interpretation of dispersal and its demographic consequences, although the spatial variability of environments is rarely assessed in dispersal studies.

Download or read book Bears their Biology and Management written by Clifford J. Martinka and published by . This book was released on 1980 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forgotten Grasslands of the South written by Reed F. Noss and published by Island Press. This book was released on 2012-12-03 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forgotten Grasslands of the South is the study of one of the biologically richest and most endangered ecosystems in North America. In a seamless blend of science and personal observation, renowned ecologist Reed Noss explains the natural history of southern grasslands, their origin and history, and the physical determinants of grassland distribution, including ecology, soils, landform, and hydrology. In addition to offering fascinating new information about these little-studied ecosystems, Noss demonstrates how natural history is central to the practice of conservation. Although theory and experimentation have recently dominated the field of ecology, ecologists are coming to realize how these distinct approaches are not divergent but complementary, and that pursuing them together can bring greater knowledge and understanding of how the natural world works and how we can best conserve it. This long-awaited work sets a new standard for scientific literature and is essential reading for those who study and work to conserve the grasslands of the South as well as for everyone who is fascinated by the natural world.

Download or read book The Year Without a Summer written by and published by . This book was released on 1988 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Harrison R Crandall written by Kenneth A. Barrick and published by Gibbs Smith. This book was released on 2013-09 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experience Teton country from the eyes of a grand visionary Harrison R. Crandall was the first official photographer of Grand Teton National Park. In addition to his marvelous iconic landscape photos of Teton country, many of which were meticulously hand colored with a painter’s eye, many of his original color paintings, drawings, and illustrations are featured. With a wealth of archival photographs, many of which have never been published before, this book is both a visual treat for the eyes as well as an authoritative chronicle of Harrison Crandall’s life and work.

Download or read book Mammoth Cave written by Horton H. Hobbs III and published by Springer. This book was released on 2017-06-14 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reveals the science and beauty of Mammoth Cave, the world's longest cave, which has played an important role in the natural sciences. It offers a comprehensive and interdisciplinary treatment of the cave, combining insights from leading experts in fields ranging from archeology and cultural history to life science and geosciences. The first animals specialized for cave life in North America, including beetles, spiders, crayfish, and fish, were discovered in Mammoth Cave in the 1840s. It has also been used and explored by humans, including Native Americans, who mined its sulfate minerals and later African-American slaves, who made a map of the cave. More recent stories include 'wars' between commercial cave owners, epic exploration trips by modern cave explorers, and of course tourism. The first section of the book is an extensive description including maps and photos of the cave, its basic structural pattern, and how it relates to the surface landscape. The second section covers the human history of utilization and exploration of the cave, including mining, tourism, and medical experiments. Cave science is the topic of the third section, including geology, hydrology, mineralogy, climatology, paleontology, ecology, biodiversity, and microbiology. The fourth section looks to the future, with an overview of environmental issues facing Mammoth Cave managers. The book is intended for anyone interested in caves in general and Mammoth Cave in particular, experts in one discipline seeking information about other areas, and researchers and students interested in the many avenues of pursuit possible in Mammoth Cave.

Download or read book Southern Appalachian Region written by Charles Butts and published by . This book was released on 1932 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Natural Antioxidants in Avian Nutrition and Reproduction written by Peter F. Surai and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main aim of this volume is to provide up-to-date information about natural antioxidants in relation to avian physiology, nutrition and reproduction. A comparison with farm animals and humans is made where appropriate.

Download or read book Wildlife Feeding and Nutrition written by Charles Robbins and published by Elsevier. This book was released on 2012-12-02 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wildlife Feeding and Nutrition is the fifth in a series of books on animal feeding and nutrition. It fills a serious gap in the wildlife and animal nutrition literature by providing a discussion of the basic principles of nutrition and their application to the broader field of wildlife ecology. This book is based on lectures presented in an upper-level wildlife nutrition course taught at Washington State University. The book discusses the five major nutritional categories of constituents that animals must acquire from their external environments: energy, protein, water, minerals, and vitamins. Subsequent chapters cover topics such as the estimation of energy and protein requirements; dietary protein requirements for captive wildlife and free-ranging populations; wildlife reproductive characteristics; the digestion and metabolism of nutrients; and food intake regulation. The text will be invaluable to wildlife biologists, to those who are interested in captive animal nutrition and management, and to those who are interested in improving the feed supply and nutrition of free-ranging wildlife.

Download or read book Oxidative Stress and Hormesis in Evolutionary Ecology and Physiology written by David Costantini and published by Springer Science & Business Media. This book was released on 2014-03-27 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses oxidative stress and hormesis from the perspective of an evolutionary ecologist or physiologist. In the first of ten chapters, general historical information, definitions, and background of research on oxidative stress physiology, hormesis, and life history are provided. Chapters 2-10 highlight the different solutions that organisms have evolved to cope with the oxidative threats posed by their environments and lifestyles. The author illustrates how oxidative stress and hormesis have shaped diversity in organism life-histories, behavioral profiles, morphological phenotypes, and aging mechanisms. The book offers fascinating insights into how organisms work and how they evolve to sustain their physiological functions under a vast array of environmental conditions.

Download or read book A Definitive System for Analysis of Grizzly Bear Habitat and Other Wilderness Resources written by John Johnson Craighead and published by Wildlife-Wildlands Institute. This book was released on 1982 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Giant Pandas of Wolong written by George B. Schaller and published by . This book was released on 1985-01 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discusses the conservation, history, geographic distribution, activity patterns, feeding habits, and social behavior of Chinese giant pandas.

Download or read book Yellowstone Grizzly Bears written by Daniel D. Bjornlie and published by National Park Service Yellowstone National Park. This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Watching Worms written by Rocky Fuller and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Follow the directions to create a worm farm.

Download or read book Ultimate Visual Dictionary written by and published by . This book was released on 1994 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt: Color photographs and detailed text describe more than 50,000 terms and 270 major entries on everything from the prehistoric earth and the sciences to sports, art, and music.