Download or read book Presence Relative Abundance and Resource Selection of Bats in Managed Forest Landscapes in Western Oregon written by Edward B. Arnett and published by . This book was released on 2008 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: I studied presence, relative abundance, and resource selection of bats in managed Douglas-fir (Pseudotsuga menziesii) forests in western Oregon from May through September, 1999-2001. Species richness was not related to elevation, density of snags, or length of edge or perennial streams in sampled landscapes. I captured bats more frequently in landscapes with moderate to high densities of snags and sex ratios were skewed toward males, especially in snag-rich landscapes at higher elevations. Elevation generally was negatively related to captures of female bats. I determined use of day roosts by female and male long-eared myotis (Myotis evotis), female long-legged myotis (Myotis volans), and female big brown bats (Eptesicus fuscus). Relative to random structures, all three species used snags that had less canopy closure, more adjacent snags, and were closer to the edge of the stand. Diameter of snags was an important variable differentiating roost and random snags used by big brown bats and long-legged myotis. I found considerable overlap in structural and contextual characteristics of snags and trees used as roosts among the three species of bats. My findings provide evidence that females of sympatric species of bats may alter their choices of roosts when co-existing in landscapes with low densities of snags. Female and male long-eared myotis primarily used stumps and down logs in landscapes with low densities of snags, while using snags more frequently in landscapes with high snag densities. I found that tree species and structural characteristics of snags, stumps, and logs used as roosts generally were similar between female and male long-eared myotis and that context variables (e.g., elevation) best differentiated use of structures between sexes. Failure to account for differences in use of roosts among species, between sexes, and among landscapes with varied conditions could lead to erroneous conclusions and ineffective or inappropriate management recommendations. Elevational gradients and densities of snags are important factors to consider when developing snag and green tree retention strategies for bats in this region. Forest management practices that retain and create large snags in landscapes currently with low densities of snags would benefit female bats, especially at lower elevations.
Download or read book Bats in Forests written by Michael J. Lacki and published by JHU Press. This book was released on 2007-05-11 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although bats are often thought of as cave dwellers, many species depend on forests for all or part of the year. Of the 45 species of bats in North America, more than half depend on forests, using the bark of trees, tree cavities, or canopy foliage as roosting sites. Over the past two decades it has become increasingly clear that bat conservation and management are strongly linked to the health of forests within their range. Initially driven by concern for endangered species—the Indiana bat, for example—forest ecologists, timber managers, government agencies, and conservation organizations have been altering management plans and silvicultural practices to better accommodate bat species. Bats in Forests presents the work of a variety of experts who address many aspects of the ecology and conservation of bats. The chapter authors describe bat behavior, including the selection of roosts, foraging patterns, and seasonal migration as they relate to forests. They also discuss forest management and its influence on bat habitat. Both public lands and privately owned forests are considered, as well as techniques for monitoring bat populations and activity. The important role bats play in the ecology of forests—from control of insects to nutrient recycling—is revealed by a number of authors. Bat ecologists, bat conservationists, forest ecologists, and forest managers will find in this book an indispensable synthesis of the topics that concern them.
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2008 with total page 902 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Multi scale Factors Related to Abundance of Bats and Insect Prey in Savannas Woodlands and Forests in the Ozark Highlands USA written by Kathryn Marie Womack and published by . This book was released on 2017 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Restoration of savanna and woodland ecosystems are high priorities for state and federal agencies in the Midwest and prescribed fire and mechanical tree thinning are the main tools used to restore these communities. Information on how bat species and their insect prey respond to restoration is needed to guide management decisions for species of conservation concern. There is a heightened urgency to collect demographic data during the summer maternity season due to white-nose syndrome (WNS) and other threats to bat populations. Our objectives were to: 1) evaluate the performance of the n-mixture model for repeated count data and the general multinomial-Poisson model for removal sampling (n-mixture model and removal model, respectively) for estimating bat abundance from simulated mist-net capture data, 2) determine the relationships between prescribed fire, vegetation structure, and site characteristics on insect abundance, and 3) determine the effect of restoration, vegetation structure, and landscape factors on bat species abundances across a gradient of savannas, woodlands, and non-managed forest in the Ozark Highlands of Missouri. We fit the n-mixture and removal models in the UNMARKED package in R, and simulated datasets that examined how both models would perform based on potential study design constraints, various probabilities of detection, and population sizes. We simulated 4 scenarios each based on 85 iterations on 1000 randomly generated datasets. We calculated relative bias (RB), mean absolute error (MAE), and mean absolute percent error (MA[percent]E) from model predictions to evaluate model performance. Relative bias, MAE, and MA[percent]E decreased as detection probability and bat abundance increased. Model fit was acceptably low when bat abundance was [greater than]70, and detection probability was [greater than] 0.5 for n-mixture models. The removal model outperformed the n-mixture model in all scenarios except when detection probability was 0.05. The removal model correctly estimated bat abundance for 50[percent] of simulated scenarios versus the n-mixture model's 3 out of 43. Utilization of the removal model using data from repeated mist-net surveys may allow resource managers and conservationists to better quantify how resource management and landscape composition affect bat species abundance and overall populations. We provide managers with evidence of the utility of the removal model to estimate bat abundances from repeated mist-net survey data while incorporating meaningful habitat, management, and landscape covariates. Furthermore, documenting changes in populations sizes during the summer maternity season will enable improved conservation practices for species management. We sampled insects at 8 plots in 2014, and 4 plots in 2015 and 2016 within 250 m of each mist-net sites. We fit generalized linear mixed effects models to evaluate a priori hypotheses on the effects of savanna woodland restoration on insect abundances. Prescribed fire did affect insect abundances at plots surrounding each mist-net site. Insect plots burned 2 or 3 times within the last ten years had higher insect abundances for some insect response groups compared to non-managed plot. Year since a plot burned also affected insect abundances, with sites burned more recently within 3 years had lower insect abundances for some insect response groups and in others – we found no relationship. We only evaluated insect Orders and did not examine specific families or species richness to understand how management affects diversity of insects. Temperature was the best predictor of insect abundances at plots for most response variables, and we found support for site aspect, and tree density by size classes. Managers should be mindful that different insect groups had different responses to prescribed fire, therefore a diversity of practices in the landscape will provide for more diverse insect prey Overall, restoration practices did not have a lasting negative effect on insect abundances, and some positive effects. We conducted mist-net surveys at 89 sites across the Ozark region of Missouri from 2014-2016, and collected demographic data on 4 bat species captured: northern longeared bat (Myotis septentrionalis), tri-colored bat (Perimyotis subflavus), evening bat (Nycticeius humeralis), and eastern red bat (Lasiurus borealis). We fit the removal model to evaluate multi-scale a priori hypotheses on the effects of restoration, landscape factors, and prey availability at sites that potentially affect either the detection or abundance of bats at sites. Top models for all four bat species highlighted the importance of evaluating multiple spatial scales in ecological studies. Overall, we found no evidence that restoration negatively affected any of the bat species investigated; although, northern long-eared bats abundance presented stronger positive relationship to percent forest and increased tree densities than to percent savanna-woodlands within 1km. Our study was the first to predict abundances from repeated count data from mist-net surveys during the summer maternity season and accounting for varying detection probabilities. We did not find support for relationships between potential insect prey and bat abundances. Eastern red bats, tricolored, and evening bat abundances were positively related to prescribed fire and negatively to tree densities or percent canopy and therefore should respond positively to savanna and woodland restoration. Northern long-eared bat had higher abundances at sites with higher tree densities of pole and saw timber and eastern red bat and northern long-eared bat abundances was positively related to sites with higher percentage of forest and savanna-woodland habitat within 1 km of mist-net sites. Evening bat abundances was the greatest at sites that had higher fire frequencies within 1 km of a mist-net site. We suggest managers consider the tradeoffs among species in these abundance relationships when planning management and that restoration of savanna and woodlands, when part of a larger management goal to create heterogeneity of forest types, will likely promote higher abundances of all four bat species.
Download or read book Ecological and Behavioral Methods for the Study of Bats written by Thomas H. Kunz and published by . This book was released on 2009-11-09 with total page 930 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thomas H. Kunz is a professor of biology and director of the Center for Ecology and Conservation Biology at Boston University. He is the editor of Bat Biology and Conservation and Bat Ecology. Stuart Parsons is a senior lecturer in biological sciences at the University of Auckland, New Zealand -- Jacket.
Download or read book Wildlife Habitats in Managed Forests written by Jack Ward Thomas and published by . This book was released on 1979 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: That is what this book is about. It is a framework for planning, in which habitat is the key to managing wildlife and making forest managers accountable for their actions. This book is based on the collective knowledge of one group of resource professionals and their understanding about how wildlife relate to forest habitats. And it provides a longoverdue system for considering the impacts of changes in forest structure on all resident wildlife.
Download or read book Sampling Methods for Bats written by Donald W. Thomas and published by . This book was released on 1989 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bats in the Anthropocene Conservation of Bats in a Changing World written by Christian C. Voigt and published by Springer. This book was released on 2015-12-07 with total page 601 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on central themes related to the conservation of bats. It details their response to land-use change and management practices, intensified urbanization and roost disturbance and loss. Increasing interactions between humans and bats as a result of hunting, disease relationships, occupation of human dwellings, and conflict over fruit crops are explored in depth. Finally, contributors highlight the roles that taxonomy, conservation networks and conservation psychology have to play in conserving this imperilled but vital taxon. With over 1300 species, bats are the second largest order of mammals, yet as the Anthropocene dawns, bat populations around the world are in decline. Greater understanding of the anthropogenic drivers of this decline and exploration of possible mitigation measures are urgently needed if we are to retain global bat diversity in the coming decades. This book brings together teams of international experts to provide a global review of current understanding and recommend directions for future research and mitigation.
Download or read book Multiple Species Inventory and Monitoring Technical Guide written by Patricia N. Manley and published by . This book was released on 2006 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: Monitoring protocols are presented for: landbirds; raptors; small, medium and large mammals; bats; terrestrial amphibians and reptiles; vertebrates in aquatic ecosystems; plant species, and habitats.
Download or read book Microchiropteran Bats written by Anthony Michael Hutson and published by IUCN. This book was released on 2001 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bats of the United States and Canada written by Michael J. Harvey and published by JHU Press. This book was released on 2011-12-01 with total page 219 pages. Available in PDF, EPUB and Kindle. Book excerpt: Honorable Mention, Popular Science, 2012 PROSE Awards, Professional and Scholarly Publishing Division of the Association of American Publishers The only mammals capable of true flight, bats are among the world’s most fascinating creatures. This accessible guide to the forty-seven species of bats found in the United States and Canada captures and explains the amazing diversity of these marvels of evolution. A wide variety of bat species live in the United States and Canada, ranging from the California leaf-nosed bat to the Florida bonneted bat, from the eastern small-footed bat to the northern long-eared bat. The authors provide an overview of bat classification, biology, feeding behavior, habitats, migration, and reproduction. They discuss the ever-increasing danger bats face from destruction of habitat, wind turbines, chemical toxicants, and devastating diseases like white-nose syndrome, which is killing millions of cave bats in North America. Illustrated species accounts include range maps and useful identification tips. Written by three of the world’s leading bat experts and featuring J. Scott Altenbach's stunning photographs, this fact-filled and easy-to-use book is the most comprehensive and up-to-date account of bats in the U.S. and Canada.
Download or read book Wildlife Habitat Management written by Brenda C. McComb and published by CRC Press. This book was released on 2007-06-20 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, conflicts between ecological conservation and economic growth forced a reassessment of the motivations and goals of wildlife and forestry management. Focus shifted from game and commodity management to biodiversity conservation and ecological forestry. Previously separate fields such as forestry, biology, botany, and zoology merged
Download or read book Cumulative Effects of Forest Practices in Oregon written by and published by . This book was released on 1995 with total page 870 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wildlife habitat Relationships in Oregon and Washington written by David H. Johnson and published by . This book was released on 2001 with total page 764 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume provides information about the terrestrial, freshwater, and marine habitats of Oregon and Washington and the wildlife that depend upon them; it also supports broader and more consistent conservation planning, management, and research. The 27 chapters identify 593 wildlife species, define some 300 wildlife terms, profile wildlife communities, review introduced and extirpated species and species at risk, and discuss management approaches. The volume includes color and bandw photographs, maps, diagrams, and illustrations; and the accompanying CD-ROM contains additional wildlife data (60,000 records), maps, and seven matrixes that link wildlife species with their respective habitat types. Johnson is a wildlife biologist, engineer, and habitat scientist; and O'Neill is director of the Northwest Habitat Institute; they worked together on this publication project as its managing directors. Annotation copyrighted by Book News Inc., Portland, OR
Download or read book Agroforestry and Biodiversity Conservation in Tropical Landscapes written by Götz Schroth and published by Island Press. This book was released on 2013-03-22 with total page 537 pages. Available in PDF, EPUB and Kindle. Book excerpt: Agroforestry -- the practice of integrating trees and other large woody perennials on farms and throughout the agricultural landscape -- is increasingly recognized as a useful and promising strategy that diversifies production for greater social, economic, and environmental benefits. Agroforestry and BiodiversityConservation in Tropical Landscapes brings together 46 scientists and practitioners from 13 countries with decades of field experience in tropical regions to explore how agroforestry practices can help promote biodiversity conservation in human-dominated landscapes, to synthesize the current state of knowledge in the field, and to identify areas where further research is needed. Agroforestry and Biodiversity Conservation in Tropical Landscapes is the first comprehensive synthesis of the role of agroforestry systems in conserving biodiversity in tropical landscapes, and contains in-depth review chapters of most agroforestry systems, with examples from many different countries. It is a valuable source of information for scientists, researchers, professors, and students in the fields of conservation biology, resource management, tropical ecology, rural development, agroforestry, and agroecology.
Download or read book Monitoring Animal Populations and Their Habitats written by Brenda McComb and published by CRC Press. This book was released on 2010-03-11 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the face of so many unprecedented changes in our environment, the pressure is on scientists to lead the way toward a more sustainable future. Written by a team of ecologists, Monitoring Animal Populations and Their Habitats: A Practitioner’s Guide provides a framework that natural resource managers and researchers can use to design monitoring programs that will benefit future generations by distilling the information needed to make informed decisions. In addition, this text is valuable for undergraduate- and graduate-level courses that are focused on monitoring animal populations. With the aid of more than 90 illustrations and a four-page color insert, this book offers practical guidance for the entire monitoring process, from incorporating stakeholder input and data collection, to data management, analysis, and reporting. It establishes the basis for why, what, how, where, and when monitoring should be conducted; describes how to analyze and interpret the data; explains how to budget for monitoring efforts; and discusses how to assemble reports of use in decision-making. The book takes a multi-scaled and multi-taxa approach, focusing on monitoring vertebrate populations and upland habitats, but the recommendations and suggestions presented are applicable to a variety of monitoring programs. Lastly, the book explores the future of monitoring techniques, enabling researchers to better plan for the future of wildlife populations and their habitats. Monitoring Animal Populations and Their Habitats: A Practitioner’s Guide furthers the goal of achieving a world in which biodiversity is allowed to evolve and flourish in the face of such uncertainties as climate change, invasive species proliferation, land use expansion, and population growth.
Download or read book Bat Evolution Ecology and Conservation written by Rick A. Adams and published by Springer Science & Business Media. This book was released on 2013-09-05 with total page 549 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advances in the study of bats have changed the way we understand this illusive group of mammals. This volume consist of 25 chapters and 57 authors from around the globe all writing on the most recent finding on the evolution, ecology and conservation of bats. The chapters in this book are not intended to be exhaustive literature reviews, but instead extended manuscripts that bring new and fresh perspectives. Many chapters consist of previously unpublished data and are repetitive of new insights and understanding in bat evolution, ecology and conservation. All chapters were peer-reviewed and revised by the authors. Many of the chapters are multi-authored to provide comprehensive and authoritative coverage of the topics.
