Download or read book Impacts of Timber Harvest on the Endemic Sacramento Mountain Salamander Aneides Hardii Caudata Plethodontidae in the Southern Rocky Mountains of New Mexico USA written by Christopher K. Borg and published by . This book was released on 2001 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Master s Theses Directories written by and published by . This book was released on 2001 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Education, arts and social sciences, natural and technical sciences in the United States and Canada".
Download or read book Habitat Characteristics and Indices of Territoriality of the Sacramento Mountains Salamander Aneides Hardii written by Stephanie Sue Haan and published by . This book was released on 2005 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Individual Population and Landscape scale Effects of Timber Harvest on the Red legged Salamander Plethodon Shermani written by Grant McClintock Connette and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Habitat loss and alteration are widely recognized as major threats to global biodiversity and the vulnerability of animal species to these disturbance processes can depend on the behavioral responses of individuals to modified landscapes. In response to a changing environment, individuals may either attempt to adapt to changing conditions or disperse to new habitat. At the local scale, the emigration of individuals or changes in activity patterns could lead to reduced counts of animals in ecological studies. At broader spatial scales, organismal movement may enable population rescue or reestablishment after disturbance and maintain demographic connectivity among populations. These complex mechanisms underlying the perceived abundance and distribution of species often requires a careful deconstructing of demographic trends and sampling variation in ecological data. Lungless salamanders (Family Plethodontidae) are extremely abundant in many forest and headwater stream ecosystems of eastern North America. These salamanders breathe across their moist skin surface, making them sensitive to fluctuations in temperature and moisture conditions. Thus, changes in habitat characteristics are known to have a considerable effect on populations of these salamanders. However, studies identifying the behavioral or demographic causes of declines as well as patterns of long-term recovery are critically needed. My dissertation research combined behavioral, population and landscape-scale studies to identify the effects of timber harvest on a lungless woodland salamander (Plethodon shermani). The primary objectives of my research were to 1) to describe the short-and long-term effects of timber harvest on salamander abundance and 2) to determine the behavioral or demographic processes dictating the abundance and distribution of salamanders at both local and landscape scales. To characterize baseline population dynamics of the salamander, P. shermani, I conducted a 5-year capture-mark-recapture study which revealed substantial annual variation in survival, recruitment, and population size under natural conditions. Initial results suggest that differences in recruitment and over-winter survival might be responsible for the lower abundances of terrestrial salamanders in logged areas at the end of this study. In an experimental translocation of salamanders into a timber cut and nearby forest habitat, I found that salamanders respond to differences in habitat quality by altering their movement behavior. This type of behavioral shift might help mitigate the risk of sustaining activity in recently logged forest. In an additional study, I tracked salamanders using a PIT-tag telemetry system in order to identify mortality, rather than emigration or reduced activity, as the likely cause for perceived declines in salamanders immediately following timber harvest. Finally, in a series of landscape-scale surveys, I found that salamander abundance was positively correlated with forest age (i.e., years since harvest), that full population recovery can require greater than 100 years, and that populations of species with greater movement ability may recover faster due to immigration of individuals from surrounding forest. Collectively, these studies identify key behavioral and demographic processes responsible for observed changes in salamander populations and suggest specific strategies for conservation and management.
Download or read book Conservation of the Amphibia of the United States written by R. Bruce Bury and published by . This book was released on 1980 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Timber Harvest Effects on Metamorphosed and Larval Long toed Salamanders Ambystoma Macrodactylum written by Rex L. McGraw and published by . This book was released on 1997 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Timber Harvesting on Terrestrial Salamander Abundance and Behavior written by Shannon Michele Knapp and published by . This book was released on 1999 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: We also tested whether poorly fed salamanders exhibited risk-sensitive foraging in a dry environment in a laboratory experiment. Poorly fed salamanders were observed out of their simulated burrows less than well fed salamanders suggesting salamanders, particularly females and small adults, are risk-averse.
Download or read book Reptile Biodiversity written by Roy W. McDiarmid and published by Univ of California Press. This book was released on 2012-01-10 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: “Authoritative and comprehensive—provides an up-to-date description of the tool box of methods for inventorying and monitoring the diverse spectrum of reptiles. All biodiversity scientists will want to have it during project planning and as study progresses. A must for field biologists, conservation planners, and biodiversity managers.”—Jay M. Savage, San Diego State University “Kudos to the editors and contributors to this book. From the perspective of a non-ecologist such as myself, who only occasionally needs to intensively sample a particular site or habitat, the quality and clarity of this book has been well worth the wait.”—Jack W. Sites, Jr.
Download or read book Inventory and Monitoring of Wildlife Habitat written by Allen Y. Cooperrider and published by . This book was released on 1986 with total page 858 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Amphibians and Reptiles written by Walter E. Meshaka and published by . This book was released on 2005 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Meshaka (zoology and botany, State Museum of Pennsylvania) and Babbitt (natural resources, University of New Hampshire) gather a cross-section of researchers to address the conservation of Florida's rich but imperiled herpetofauna. The 27 contributions represent original research, essays, and reviews that identify threats to amphibians and reptiles and to the system that supports them. The editors provide a consensus on the most important threats and offer recommendations for conserving the state's herpetofauna. Annotation : 2005 Book News, Inc., Portland, OR (booknews.com).
