Download or read book Revision of the American Lemming Mice genus Synaptomys written by Alfred Brazier Howell and published by . This book was released on 1927 with total page 1840 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 Mammals of Washington written by Walter Woelber Dalquest and published by . This book was released on 1948 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Cambridge Natural History written by Sidney Frederic Harmer and published by . This book was released on 1920 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research Techniques in Animal Ecology written by Luigi Boitani and published by Columbia University Press. This book was released on 2000-06-01 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present biodiversity crisis is rife with opportunities to make important conservation decisions; however, the misuse or misapplication of the methods and techniques of animal ecology can have serious consequences for the survival of species. Still, there have been relatively few critical reviews of methodology in the field. This book provides an analysis of some of the most frequently used research techniques in animal ecology, identifying their limitations and misuses, as well as possible solutions to avoid such pitfalls. In the process, contributors to this volume present new perspectives on the collection, analysis, and interpretation of data. Research Techniques in Animal Ecology is an overarching account of central theoretical and methodological controversies in the field, rather than a handbook on the minutiae of techniques. The editors have forged comprehensive presentations of key topics in animal ecology, such as territory and home range estimates, habitation evaluation, population viability analysis, GIS mapping, and measuring the dynamics of societies. Striking a careful balance, each chapter begins by assessing the shortcomings and misapplications of the techniques in question, followed by a thorough review of the current literature, and concluding with possible solutions and suggested guidelines for more robust investigations.

Download or read book United States Biological Survey written by David J. Schmidly and published by . This book was released on 2016-01 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Manual of Antimicrobial Susceptibility Testing written by Stephen J. Cavalieri and published by ASM Press. This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Publishers Trade List Annual written by and published by . This book was released on 1985 with total page 1982 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Seventy five Years of Mammalogy 1919 1994 written by Elmer C. Birney and published by . This book was released on 1994 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Arctic Flora and Fauna written by Henry P. Huntington and published by . This book was released on 2001 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this report is "to summarize ... the information required to assess the state of the Arctic's natural environment today ... ; to provide a useful reference to a wide audience of policy makers, Arctic residents, researchers, and others active in the conservation of Arctic flora and fauna; to point the way to improving our collective understanding and facilitating the international cooperative action required to conserve the Arctic's natural environment."--Page 11.

Download or read book Allophaiomys and the Age of the Olyor Suite Krestovka Sections Yakutia written by Charles Albert Repenning and published by . This book was released on 1992 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microtine history indicates mosaic evolution and complex dispersal patterns around the Northern Hemisphere ; by reflecting this history and evaluating stage of population evolution, microtine biochronology can discriminate time periods as brief as 5,000 years.

Download or read book Paleoecology of Beringia written by David M. Hopkins and published by Elsevier. This book was released on 2013-09-17 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: Paleoecology of Beringia is the product of a symposium organized by its editors, sponsored by the Wenner-Gren Foundation for Anthropological Research, and held at the foundation's conference center in Burg Wartenstein, Austria, 8-17 June 1979. The focus of this volume is on the paradox central to all studies of the unglaciated Arctic during the last Ice Age: that vertebrate fossils indicate that from 45,000 to 11,000 years BP an environment considerably more diverse and productive than the present one existed, whereas the botanical record, where it is not silent, supports a far more conservative appraisal of the region's ability to sustain any but the sparsest forms of plant and animal life. The volume is organized into seven parts. Part 1 focuses on the paleogeography of the Beringia. The studies in Part 2 explore the ancient vegatation. Part 3 deals with the steppe-tundra concept and its application in Beringia. Part 4 examines the paleoclimate while Part 5 is devoted to the biology of surviving relatives of the Pleistocene ungulates. Part 6 takes up the presence of man in ancient Beringia. Part 7 assesses the paleoecology of Beringia during the last 40,000 years

Download or read book Under Mount Saint Elias written by Frederica De Laguna and published by . This book was released on 1972 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monographic Revision of the Pocket Gophers written by Clinton Hart Merriam and published by . This book was released on 1895 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Revision of the Mice of the American Genus Peromyscus Classic Reprint written by Wilfred Hudson Osgood and published by Forgotten Books. This book was released on 2017-11-19 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Revision of the Mice of the American Genus Peromyscus But the time has-not yet come for a satisfactory revision of the group, to attempt which at least specimens are requisite, collected so as to fully represent the seasonal phases of pelage obtaining at hundreds of more or less widely separated localities. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book PHYSIOGRAPHY OF WESTERN UNITED STATES written by NEVIN MELANCTHON. FENNEMAN and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Revision of the American Harvest Mice Genus Reithrodontomys Classic Reprint written by Arthur Holmes Howell and published by Forgotten Books. This book was released on 2017-12-14 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Revision of the American Harvest Mice (Genus Reithrodontomys) In 1895 Allen published an extended revision of the genus in which he recognized 15 forms, 8 of which were there first described. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.