Download or read book Maternity Roost Selection of Indiana Bats myotis Sodalis and Occupancy of Two Threatened Myotine Bat Species on National Wildlife Refuges in Northern Missouri written by Dane A. Smith and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: North American bat species face a range of environmental stressors which have negatively impacted recovery of the endangered Indiana bat (Myotis sodalis) and led to inclusion of the northern long-eared bat (Myotis septentrionalis) as a federally threatened species. Historic threats like disturbance of winter hibernacula and habitat loss continue to imperil both species, but the introduction of the fungal disease white-nose syndrome (WNS) into North America in 2006 resulted in substantial population declines in several species of Myotine bats in the eastern and central portions of the United States. Prior to the emergence of WNS, M. septentrionalis populations were estimated in the millions, and the rangewide M. sodalis population had experienced almost a decade of steady recovery. However, since the onset of WNS, M. sodalis populations have declined steadily and M. septentrionalis now faces extirpation from much of its range. Additionally, the development of wind power facilities across large portions of the central U.S. has increased the likelihood that critical habitat will be lost or fragmented and pose a new threat of large-scale mortality caused by collisions between bats and turbine blades. Objectives of this study were to 1) quantify maternity habitat characteristics of the endangered Indiana bat (Myotis sodalis) in northern Missouri to identify factors that drive selection and 2) identify local- and landscape-scale habitat characteristics associated with occupancy of M. sodalis and M. septentrionalis. To identify drivers of maternity roost selection of M. sodalis in Northern Missouri, we used mist nets to capture pregnant and lactating females during the summers of 2017 and 2018 and applied radio transmitters to individuals with sufficient body mass. We tracked 24 M. sodalis for an average of 5.8 days and identified 21 roost trees. We conducted emergence counts at each roost to classify them as primary or alternate and collected habitat data for each tree and the surrounding area. We then collected the same habitat data at available roosts and used discrete choice models to compare selected roosts with available trees within the study area. The top ranked model for primary roosts included tree diameter (DBH), tree height, and canopy cover while the top ranked model for alternate roosts included DBH, snag basal area, and canopy cover. Our results indicate that the probability of primary roost selection was greatest for trees with DBH ~ 50 cm and height of ~ 17 m. Roost site selection probability decreased with canopy closure, falling to 0 above ~ 75% closure. The probability of selection for alternate roosts was associated with greater canopy closure (~ 75%), smaller trees (~ 35 cm) and was positively associated with snag basal area. Land managers who wish to promote maternity habitat for M. sodalis could preserve existing snags, implement techniques to create new large-diameter snags, and, when possible, acquire additional bottomland hardwood forests to ensure the availability of an extensive network of available roost trees. To identify the local- and landscape-scale factors associated with occupancy of M. sodalis and M. septentrionalis, we used ANABAT SD1 acoustic detectors to record the echolocation calls of passing bats at 87 sites during the maternity seasons of 2017 and 2018. We deployed three detectors at each site for a minimum of two consecutive nights and recorded a total of 581 detector nights. Calls were identified to species, and detection histories of M. sodalis and M. septentrionalis were used to develop single-season occupancy models which used environmental covariates to estimate the probability of detecting each target species and evaluated the effects of local and landscape habitat characteristics on occupancy probability. The top detection model for M. sodalis included minimum temperature, barometric pressure, average wind speed, and moon minutes. The top detection model for M. septentrionalis included amount of precipitation. Our models indicate that the primary drivers of M. sodalis occupancy were percent of landscape (3 km) composed of wooded wetlands, distance to nearest wooded wetland, forest connectivity, forest shape, and wetland connectivity. Occupancy was positively associated with the proportion of wooded wetlands on the landscape, forest shape, and wetland connectivity and negatively associated with distance to nearest wooded wetland, forest connectivity, and proportion of forest on the landscape. The primary factors associated with M. septentrionalis occupancy were proportion of wooded wetlands on the landscape and wetland connectivity. Occupancy was positively associated with proportion of wooded wetlands and negatively associated with the degree to which wetlands were connected. We recommend land managers preserve riparian forest habitat and enact measures to reduce clutter and stem density in upland forests to improve overall habitat suitability and increase the likelihood that forests in this region can support foraging Myotis bats.

Download or read book Roost Selection Roosting Fidelity and Activity Patterns of Female Indiana Bats Myotis Sodalis in Northern Missouri written by Shelly Noelle Dey and published by . This book was released on 2009 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bats around the United States continue to be threatened by both natural and manmade factors. White-Nose Syndrome (WNS) is killing thousands of bats in the Northeastern United States and is rapidly moving to the South and West. It is extremely important to study both endangered and non-endangered bats in areas not yet exposed to these certain threats. Warmer cave temperatures and habitat destruction are two threats to Missouri bats. Populations of the endangered Indiana bat (Myotis sodalis) in Missouri have decreased 95% since 1979. During the summers of 2007, 2008 and 2009 twenty three reproductively active and one non-reproductively active female Indiana bats were captured, fitted with 0.47g to 0.51g radio transmitters and tracked throughout the life of the transmitter. Anabat II and SD1 detectors were placed at each netting location to determine presence/absence and foraging/activity areas. Roost trees were located by radio telemetry and species, DBH, circumference, height, bark percentage, canopy cover, snag density and basal area were taken at each roost tree. Primary roost trees (>30bats) had a significantly larger average diameter than alternate (

Download or read book Review of the Forest Habitat Relationships of the Indiana Bat Myotis Sodalis written by and published by . This book was released on 2001 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Review of Forest Habitat Relationships of the Indiana Bat written by and published by . This book was released on 2001 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Roost Site Selection by Indiana Bats Myotis Sodalis and Comparison of Foraging Habitat Selection by Morphologically Similar Bat Species in Bottomland Hardwood Ecosystems written by Jacquelyn A. Dearborn and published by . This book was released on 2017 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: While bottomland hardwoods used to encompass a large portion of the south-central United States, due to clear cutting for agriculture and other purposes, the amount of bottomland hardwoods present has been reduced by almost 88 percent from its previous extent. At the same time, bat surveys in the Midwest after the arrival of white-nose syndrome (WNS) have shown declines in populations of Indiana bats (Myotis sodalis), northern long-eared bats (Myotis septentrionalis), little brown bats (Myotis lucifigus), and tri-colored bats (Perimyotis subflavus). Due to these threats to bat populations, it is important to gain information on how various bat species in the Midwest United States utilize the landscape within bottomland hardwood ecosystems in order to inform conservation efforts. There were two main objectives to this study. First, we sought to determine which roost site characteristics influence selection of a roost location by individuals in maternity colonies of Indiana bats. Second, we wanted to evaluate which habitat characteristics influenced occupancy of morphologically similar species within bottomland hardwood ecosystems in the Midwest United States: Myotis species, tri-colored bats, and evening bats (Nycticeius humeralis).

Download or read book Species Profile Indiana Bat Myotis Sodalis on Military Installations in the Southeastern United States written by Darrell Edward Evans and published by . This book was released on 1998 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Using Occupancy Estimates to Assess Habitat Use and Interspecific Interactions of the Indiana Bat Myotis Sodalis and Little Brown Bat M Lucifugus in Northeast Missouri written by Sarah A. Pennington and published by . This book was released on 2013 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Indiana bat (Myotis sodalis) has been endangered since 1967 and is the focus of a controversial debate among stakeholders on both public and private lands due to a lack due to a lack of understanding the summer habitat needs of the species. In addition, even less is known about interspecific interactions with other bats and if this could be playing a role in the decline of this species. Our objectives were to estimate the probability of site occupancy for the Indiana bat and the little brown bat (M. lucifugus) from which we could model their summer habitat suitability. We then used our occupancy modeling estimates to determine whether the knowledge of the little brown bat's (M. lucifugus) landscape occupancy patterns improved the fit of Indiana bat occupancy models and vice versa. We used an information theoretic approach to examine a priori hypotheses relative to both probability of detection and site occupancy using an objective model selection criterion to rank the candidate models. For the Indiana bat the quantity of bottomland hardwood forest in a 7 km landscape was the single most significant factor in determining Indiana bat occupancy. For the little brown bat, site combined with distance to water and canopy cover created the top model determining little brown bat occupancy. Combined information of both species' occupancy patterns did not improve the probability of either species' occupancy.

Download or read book Maximum Entropy Modeling of Indiana Bat Myotis Sodalis Maternity Roost Habitat written by Joseph R. Lemen and published by . This book was released on 2015 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since 1967, the Indiana bat (Myotis sodalis) has been on the U.S. Endangered Species list due to disruption of hibernating bats in caves, summer habitat degradation, and more recently, the onset of White-nose Syndrome. The purpose of this study is to evaluate landscape variables associated with Indiana bat maternity roost trees in an attempt to better understand what factors play a role in their distribution in north central Missouri. I tracked reproductive female Indiana bats to 20 different primary and secondary roost trees; these are roosts that had multiple bats visit them on multiple occasions. GPS location data for these roosts and 6 environmental parameters (aspect, distance to forest edge, distance to stream or river, elevation, percent tree canopy, and slope) were used as input variables for a MaxEnt model of species distribution. I used ENMTools to identify which analysis features produced the best MaxEnt model for this data set. Linear and quadratic analysis features, separately, fit the data the best. When cross-validated through four replicates, the two models performed equally well with area under the curve (AUC) values of 0.792 and 0.764. Distance to forest edge was the variable with the most influence in both models, followed by elevation and distance to stream. Macro-scale environmental variables provide insight to modeling areas in which Indiana bat maternity roosts might be found in the future. This provides researchers and wildlife managers with a toolset to identify potential habitat to aid in species recovery.

Download or read book Roost site Selection of Bats in Northeast Missouri with Emphasis on the Endangered Indiana Bat Myotis Sodalis written by John Charles Timpone and published by . This book was released on 2004 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Indiana Bat Myotis Sodalis written by James M. Engel and published by . This book was released on 1976 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Indiana bat, Myotis sodalis, is classified by the Department of Interior as an endangered species. In developing a plan that will enable the recovery of the bat from its endangered predicament, an extensive search was made for literature concerning the species. This compilation is intended as an aid to biologists and conservationists interested in the animal and its habitats; it is hoped the bibliography will serve as a directory to available information and assist in research efforts on the animal. An attempt has been made to include reports and papers dealing with all aspects of the species, and, therefore, a number of papers included that have not been published. Each numbered item in the bibliography has been read and its contents indexed and cross referenced by subject.

Download or read book Summer Roost tree Selection by a Male Indiana Bat on the Fernow Experimental Forest written by and published by . This book was released on 2002 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Activities Within a Myotine Bat Community with Emphasis on the Endangered Indiana Bat Myotis Sodalis written by Matthew N. Miller and published by . This book was released on 2003 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Recovery Plan for the Indiana Bat written by and published by . This book was released on 1983 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Habitat and Management Effects on Foraging Activity of Indiana Bats Myotis Sodalis in Northern Missouri written by Kathryn M. Womack and published by . This book was released on 2011 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt: The federally endangered Indiana bat (Myotis sodalis) uses fragmented forests in largely agricultural landscapes during the maternity season. Understanding how land use and land management affect bat activity and insect prey availability would provide insight into resource needs of Indiana bats. We had three main objectives, first to determine resource selection by foraging Indiana bats during the maternity season and to compare resource use among pregnant and lactating individuals. Second, we sought to estimate home range size using utilization distributions for individual Indiana bats. Finally, we wanted to determine if we could predict Indiana bat activity by using habitat, weather, and prey availability data within our study area. We used an information theoretic approach to examine a priori models for our first and third objective. To evaluate our second objective, we used telemetry data to calculate the area within 50% and 95% probability contours of utilization distributions estimated by the fixed kernel method. We found variation among individuals in resource selection and home range size. Indiana bat activity was higher in areas managed by prescribed fire and with high percent canopy cover, and at sites with higher dry insect biomass collected in malaise traps. We believe prescribed fire benefitted bats by reducing understory clutter. In contrast, forest management practices that greatly reduce canopy cover may have a negative impact on Indiana bats.

Download or read book Determination of Presence and Habitat Suitability for the Indiana Bat M y o t i s S o d a l i s and Gray Bat Myotis Grisescens for the Pine Ford Study Area Jefferson Washington St Louis and Franklin Counties Missouri written by Alan R. Rabinowitz and published by . This book was released on 1982 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: From 29 June 1981, through 14 August 1981, fifty five trap nights and four monitor nights on the Big River and its tributaries within the Pine Ford Study Area resulted in the capture of 393 bats of ten species. High mist nets that spanned the river from bank to bank and extended from water level to a height of 7.5 meters were used. Ultrasonic monitors were used to document bat activity levels at net sites and to assess the presence of myotine bats in areas that could not be netted. Activity patterns and capture times of different species appeared to be related to the presence of mayfly hatches. The red bat (Lasiurus borealis), was the most common bat captured, comprising fifty-four percent of the total sample. Two federally endangered species, the Indiana bat, (Myotis sodalis) and the gray bat, (Myotis grisescens), also were captured, comprising 2.3 percent and 1.5 percent of the total sample, respectively. Of the nine M. sodalis captured, all were adult males except for two adult females. One lactating female M. sodalis was captured on 1 July and a post-lactating female M. sodalis was captured on 22 July. Of six M. grisescens captured, all were adult males except for one juvenile female captured on 12 August.

Download or read book Migration Ecology of Female Indiana Bats myotis Sodalis in Spring written by Arin Michelle Vann and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Indiana bat (Myotis sodalis) has been listed as a federally endangered species since 1967 due to numerous natural and anthropogenic threats. Research on the species has focused on hibernacula and maternity colonies, but data gaps exist in portions of their range. To prevent further decline, migration resources need protection, but management practices are difficult to implement without having precise data on migration routes. I documented spring migration in Arkansas using aerial and ground telemetry during 2017-2018. Radio transmitters were affixed to 52 female M. sodalis during 2017 and 2018 of which 23 were successfully tracked. I located roost trees via ground telemetry and documented their characteristics. Of the 23 tracked bats, 10 migrated east, six migrated north, five migrated south, and three remained in staging trees. These results may assist in uncovering additional information related to migration routes and maternity colonies of M. sodalis in the future. Results of my study suggest that female M. sodalis likely form maternity colonies in Arkansas.

Download or read book The Effects of Changing Forest Dynamics in the Northern Cumberland Plateau on the Indiana Bat Myotis Sodalis written by and published by . This book was released on 2009 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Northern Cumberland Plateau contains both extensive stretches of hardwood forests and remarkable biodiversity. The presences of unique and threatened wildlife species, including the Indiana bat (Myotis sodalis), have made the Plateau an area of concern. Future changes in forest conditions, ranging from declining timber markets to drastic increases in timber harvests, could prove to have significant impacts on M. sodalis. A study of M. sodalis occupancy on the Plateau indicated that although the species was difficult to detect and may not be very common on the Plateau, it could potentially be very sensitive to human disturbance. Although only a reduction in the probability of detection resulted from increased human activity, prolonged disturbance could also reduce occurrence of the species. In order to better understand a larger area of concern for the species, a map was created to designate areas with high potential for M. sodalis maternity roosts. Based on expert opinions, the Analytical Hierarchy Process (AHP) was utilized to compare and rank habitat characteristics. Upland and riparian hardwood stands were determined to be the most important for the species' maternity roosts, while developed and agricultural areas were determined to be the least important. Several areas across Tennessee's Northern Cumberland Plateau were defined as having high potential for M. sodalis maternity roosts. Both the presence and potential for the species in the Plateau, combined with the changing forest dynamics in the Plateau, have made the area a special concern for forest, ecosystem and M. sodalis management.