Download or read book Efficacy of Sampling Method and Implementation Strategy on Detecting Species Richness and Activity Levels of Bats in Western Maryland written by Aimee N. Haskew and published by . This book was released on 2009 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 Sampling Methods for Bats written by Donald W. Thomas and published by . This book was released on 1989 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 The Handbook of Acoustic Bat Detection written by Volker Runkel and published by Pelagic Publishing Ltd. This book was released on 2021-08-26 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: An accessible and comprehensive guide to all things acoustic bat detection. This highly illustrated handbook provides an in-depth understanding of acoustic detection principles, study planning, data handling, properties of bat calls, manual identification of species, automatic species recognition, analysis of results, quality assurance and the background physics of sound. No other method of detecting bats is so popular and widespread in the context of environmental assessment and voluntary work as acoustic detection, and its increased use has driven the development of a large number of sophisticated devices and analytical methods. Acoustic detection has become a standard approach for establishing the presence of bats, carrying out species identification and monitoring levels of activity. The resolution, accuracy and scale with which these tasks can be done has risen dramatically with the availability of automated real-time recording. But anyone interested in acoustic recording will quickly recognise that there are still quite a few open questions about the limits and possibilities of acoustic detection. Clear definitions of how to handle the data are usually missing, for example, and there are no clearly described activity indices. In response to the lack of thorough information on the underlying science of acoustic detection, the authors present this handbook.

Download or read book Patterns of Bat Species Richness and Activity Levels written by Susan Kathleen Whitford and published by . This book was released on 2009 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Patterns of Bat Activity and Effective Acoustic Sampling written by Samuel Lawrence Skalak and published by . This book was released on 2010 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: The results of my study are useful to help future efforts to compare bat activity between sites and to inventory species richness. Understanding patterns of bat activity and species detection rates may improve future research design and monitoring programs. Further, the analytical methods that I used to assess activity and species richness are broadly applicable to a range of survey methods and taxa.

Download or read book Development of a Bat Guano and Acoustic Sampling Testing Protocol to Identify Species Occupying Virginia Department of Transportation Bridges written by Hila Taylor and published by . This book was released on 2022 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over half of Virginia’s extant bat species, including six imperiled bat species, have been documented as using bridges as day or night roosts. To prevent or minimize harm to these species, the Virginia Department of Transportation (VDOT) performs surveys to detect bat use in transportation structures when essential infrastructure maintenance must occur. The current indicators used by VDOT to inspect bridges for bat use include staining, guano piles, and the presence of live bats. Notwithstanding, without trained personnel, it can be difficult to positively identify species use. Without the ability to confidently identify roosting species, regulatory agencies cannot discount transportation structure use by a sensitive species, such as the federally endangered gray bat (Myotis grisescens). Most acoustic detection survey methods allow for the identification of bat species active in an area but cannot confirm that a species is using a transportation structure as a day or night roost with certainty. Because acoustic detection methods are relatively inexpensive and not labor intensive, they can be used to monitor areas for an extended period to determine the likelihood of bat presence and provide region-wide predictive modeling to assess potential risk. However, acoustic monitoring alone cannot confirm roost use, so a subsequent, genetics-based approach could confirm which species have roosted in a structure. In this project, we tested a combined approach using intensive acoustics in conjunction with DNA barcoding of guano found at the sampled bridges to detect the species present in the areas around 40 bridges in southwestern Virginia’s Bristol District. From March to November 2019, we observed bat activity with acoustic sampling throughout the Clinch, Powell, Holston, Big Sandy, and New River watersheds. Gray bat activity at the bridges was correlated with proximity to the known summer maternity roost in the Bristol area and mean cave density in the surrounding landscape. Combined with pilot acoustic data from 2018 and a partial continuation in 2020, we observed high year-to-year variations in gray bat activity. We found that a long acoustic sampling duration is necessary to discern the monthly presence and relative abundance patterns of imperiled bat species (focusing on the six imperiled species documented as using bridges) across the year from emergence to the initiation of hibernation. The spatiotemporal patterns that we observed can help VDOT assess the risk to gray bats and other bat species from transportation structure management activities. In total, 283 guano samples were collected from 29 bridges for subsequent DNA analysis. Although 245 of the samples were amplified, only 77 (27% of the collected samples) were of sufficient quality to find a species match. Nine bridges had guano with DNA that matched big brown bats (Eptesicus fuscus), 12 bridges had guano matching gray bats, and three bridges had guano matching the federally threatened northern long-eared bat (Myotis septentrionalis). The bat species at all the sites with guano-derived DNA were also recorded acoustically. For guano DNA analysis, additional work-refining techniques will be needed; however, as proof of concept, the combined approach to bat sampling that we developed may aid VDOT managers in assessing bat use of bridges, which is particularly valuable in areas such as the New River drainage into which the gray bat population is newly expanding.

Download or read book Evaluating the Effects of Anthropogenic Land Use and Habitat Fragmentation on Bat Diversity and Activity in the Oak Openings Region written by Kelly Russo-Petrick and published by . This book was released on 2022 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bats are critically important for their control of insects but are experiencing population declines. The biggest reason for these declines is anthropogenic land use. Despite negative impacts, anthropogenic land use has variable impact on bats, with tolerance for more developed areas being species dependent and varying depending on the spatial or temporal scale. Previous studies on land use and bats lack spatial variability and are often single year. My goal was to determine how habitat factors related to human land use impact bat activity and species richness at multiple spatial scales over a period of several years. This research was conducted in the Oak Openings Region, which is a highly developed mixed-use region with high biodiversity that serves as important bat habitat. Specific objectives included determining (1) changes in bat activity and species richness over time, (2) differences in bat activity and species richness between protected and non-protected areas, (3) how factors related to human land use impact bat activity and species richness, and (4) to map current bat habitat suitability and see how it may change in the future. Calls increased each subsequent year during the 2019-2021 period, showing a trend of consistently increasing bat activity. However, during 2011-2019 bat activity significantly decreased. Protected areas had higher species richness and activity than unprotected areas. Higher activity and species richness were found in areas with greater percent upland prairie, sand barrens, and savanna and less floodplain and conifer forest and wet prairie. Activity was higher with less structural clutter at 3-6.5 m, lower understory height, taller canopy height, more canopy cover, and more structural clutter 0-3 m. Number of habitats was positively associated with bat species richness and activity along transects, but negatively associated with activity at stationary points. An opposite trend was observed for cropland. Activity and species richness along transects was higher when at least one side of the road had natural habitat. Variables having high impact on suitability included percent savanna and upland forest, distance to agriculture, May NDVI, total annual precipitation, mean diurnal range, and mean annual air temperature. Total percent suitable habitat did not change much between current models and 2050 predicted climate change models, although suitable habitat patches changed in location and level of suitability. These results demonstrate that measuring bat activity and species richness using a variety of spatial and temporal scales allows detection of changes in populations over time and identification of the habitat and environmental variables that are most important to bat populations.

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 Determining Nightly Bat Activity With and Sampling Effectiveness Of Modified NABat Driving Transects in Urban Areas written by Sarah A. Schimpp and published by . This book was released on 2017 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Time of peak bat activity during the night differs among bat species. Foraging strategies may differ among species due to prey availability, habitat availability, and/or interactions between species. Habitat availability is altered in urban areas, which may affect insect prey availability and interspecies interactions. Monitoring changes in bat diversity and behavior associated with habitat conversion is important, but some traditional bat monitoring methods may not be appropriate for all study sites. Acoustic monitoring techniques, including mobile monitoring using driving transects, may be good alternatives to study nightly activity in urban bat populations. Acoustic monitoring is an important component of many monitoring programs including the North American Bat Monitoring Program (NABat). Driving transects that are approximately 25 to 48 kilometers long within 100 km2 grid cells are used by NABat, but choosing appropriate transect routes can be difficult in urban areas. Shorter transects could be used to alleviate sampling issues, but a modified protocol may be less effective at sampling some bat species. My objectives were to use mobile acoustic monitoring to determine when bat species are active in a single night in urban and non-urban sites, if nightly bat activity patterns in urban sites differ from nightly bat activity patterns in non-urban sites, and whether sampling using a modified mobile acoustic monitoring protocol with reduced transect lengths is effective compared to the standardized NABat protocol. I recorded bat echolocation calls using Anabat acoustic detectors while driving transects through the night at five sites (three "urban" and two "non-urban") located in the Piedmont region of north-central North Carolina from May through August 2016. Transects were driven three times per night in each site starting 45 minutes, 180 minutes, and 300 minutes after sunset using a modified NABat protocol with 6 "short" transects (about 3.2 km long each). An additional "long" transect (about 25 km long, using NABat protocol) was sampled in 4 sites (two of the urban sites and both non-urban sites) starting 45 minutes after sunset. Recorded echolocation call sequences were analyzed manually using AnalookW and automatically using Bat Call Identification and Echoclass software. Total bat activity and Lasiurus borealis activity was decreased later in the night in urban sites. There were also fewer Eptesicus fuscus, Lasionycteris noctivagans, and Nycticeius humeralis calls on the latest time period. There were more E. fuscus, L. noctivagans, and Tadarida brasiliensis calls and fewer L. borealis, N. humeralis, and Perimyotis subflavus calls in urban sites than non-urban sites. Fewer short transects were needed to match the detection probability on long transects for E. fuscus, L. borealis, and P. subflavus, while more short transects were needed for L. noctivagans, N. humeralis, and T. brasiliensis. These results suggest that bats in urban areas partition time differently, which is important to consider as urbanization impacts bat populations. They also suggest that short transects can be used effectively for NABat sampling in urban areas."--Abstract from author supplied metadata.

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 Bat Bioacoustics written by M. Brock Fenton and published by Springer. This book was released on 2016-06-02 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: Arguably biosonar is one of the ‘eye-opening’ discoveries about animal behavior and the auditory systems of echolocators are front and center in this story. Echolocation by bats has proven to be a virtual gold mine for colleagues studying neurobiology, while providing many rich examples of its impact on other areas of bats’ lives. In this volume we briefly review the history of the topic (reminding readers of the 1995 Hearing by Bats). We use a chapter on new findings in the phylogeny of bats to put the information that follows in an evolutionary context. This includes an examination of the possible roles of Prestin and FoxP2 genes and various anatomical features affecting bat vocalizations. We introduce recent work on the role of noseleafs, ears, and other facial components on the focusing of sound and collection of echoes. ​

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 Wind Energy and Wildlife Interactions written by Johann Köppel and published by Springer. This book was released on 2017-01-23 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a selection of new insights in understanding and mitigating impacts on wildlife and their habitats. Topics such as, species behaviour and responses; collision risk and fatality estimation; landscape features and gradients, are considered. Other chapters in the book cover the results of current research on mitigation; compensation; effectiveness of measures; monitoring and long-term effects; planning and siting. Examples are given of current research on shutdown on demand and curtailment algorithms. By identifying what we have learned so far, and which predominate uncertainties and gaps remain for future research, this book contributes to the most up to date knowledge on research and management options. This book includes presentations from the Conference on Wind Energy and Wildlife impacts (CWW15), March 2015, hosted by the Berlin Institute of Technology, which offered a platform to national and international participants to showcase the current state of knowledge in wind energy’s wildlife implications.

Download or read book Biodiversity Monitoring and Conservation written by Ben Collen and published by John Wiley & Sons. This book was released on 2013-02-14 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the impacts of anthropogenic activities increase in both magnitude and extent, biodiversity is coming under increasing pressure. Scientists and policy makers are frequently hampered by a lack of information on biological systems, particularly information relating to long-term trends. Such information is crucial to developing an understanding as to how biodiversity may respond to global environmental change. Knowledge gaps make it very difficult to develop effective policies and legislation to reduce and reverse biodiversity loss. This book explores the gap between global commitments to biodiversity conservation, and local action to track biodiversity change and implement conservation action. High profile international political commitments to improve biodiversity conservation, such as the targets set by the Convention on Biological Diversity, require innovative and rapid responses from both science and policy. This multi-disciplinary perspective highlights barriers to conservation and offers novel solutions to evaluating trends in biodiversity at multiple scales.

Download or read book Island Bats written by Theodore H. Fleming and published by University of Chicago Press. This book was released on 2010-03-15 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second largest order of mammals, Chiroptera comprises more than one thousand species of bats. Because of their mobility, bats are often the only native mammals on isolated oceanic islands, where more than half of all bat species live. These island bats represent an evolutionarily distinctive and ecologically significant part of the earth’s biological diversity. Island Bats is the first book to focus solely on the evolution, ecology, and conservation of bats living in the world’s island ecosystems. Among other topics, the contributors to this volume examine how the earth’s history has affected the evolution of island bats, investigate how bat populations are affected by volcanic eruptions and hurricanes, and explore the threat of extinction from human disturbance. Geographically diverse, the volume includes studies of the islands of the Caribbean, the Western Indian Ocean, Micronesia, Indonesia, the Philippines, and New Zealand. With its wealth of information from long-term studies, Island Bats provides timely and valuable information about how this fauna has evolved and how it can be conserved.