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Author: Jennifer Windom Hollen Publisher: ISBN: Category : Bats Languages : en Pages : 121
Book Description
Bat species face multiple threats. One such threat, white-nose syndrome (WNS) has drastically reduced many bat populations. Also, habitat loss and fragmentation often forces bats to concentrate in remnant natural areas, or utilize habitats that are not as suitable. Both of these threats, while threaten bats in a general sense, also affect species differentially. The Oak Openings Region of Northwest Ohio is a biodiversity hotspot with a landscape composed of remnant natural areas within a matrix of agriculture and urban areas. This area, which provides crucial summer foraging habitat, has experienced declines in bat activity, shifts in bat assemblages, and some in diversity, in recent years, especially since WNS introduction. To study bats in this diverse landscape, we sampled bats acoustically from May - August 2016. We sampled mobile transects along roads along with stationary sites within the Oak Openings Preserve within the region. We identified calls to species and ran analyses investigating total bat activity, species-specific activity and presence, and bat diversity compared to. We compared bats to environmental, vegetation, road, and landcover parameters. Our results show that certain parameters influence bats as a whole, while others only affect one or a few species. We found that savanna stationary sites had more species-specific activity and bat diversity than forested sites (Rank Sums, p
Author: Jennifer Windom Hollen Publisher: ISBN: Category : Bats Languages : en Pages : 121
Book Description
Bat species face multiple threats. One such threat, white-nose syndrome (WNS) has drastically reduced many bat populations. Also, habitat loss and fragmentation often forces bats to concentrate in remnant natural areas, or utilize habitats that are not as suitable. Both of these threats, while threaten bats in a general sense, also affect species differentially. The Oak Openings Region of Northwest Ohio is a biodiversity hotspot with a landscape composed of remnant natural areas within a matrix of agriculture and urban areas. This area, which provides crucial summer foraging habitat, has experienced declines in bat activity, shifts in bat assemblages, and some in diversity, in recent years, especially since WNS introduction. To study bats in this diverse landscape, we sampled bats acoustically from May - August 2016. We sampled mobile transects along roads along with stationary sites within the Oak Openings Preserve within the region. We identified calls to species and ran analyses investigating total bat activity, species-specific activity and presence, and bat diversity compared to. We compared bats to environmental, vegetation, road, and landcover parameters. Our results show that certain parameters influence bats as a whole, while others only affect one or a few species. We found that savanna stationary sites had more species-specific activity and bat diversity than forested sites (Rank Sums, p
Author: Christian C. Voigt Publisher: Springer ISBN: 3319252208 Category : Nature Languages : en Pages : 601
Book Description
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.
Author: Kelly Russo-Petrick Publisher: ISBN: Category : Bats Languages : en Pages : 129
Book Description
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.
Author: Richard B. Primack Publisher: Sinauer Associates, Incorporated ISBN: 9780878936922 Category : Conservation biology Languages : en Pages : 0
Book Description
Provides up-to-date coverage of Conservation Biology, including sustainable development, global warming, and strategies to save species on the verge of extinction.
Author: Jacob A. Rogers Publisher: ISBN: Category : Bats Languages : en Pages : 106
Book Description
I assessed activity and habitat associations of bats in and surrounding San Bernard National Wildlife Refuge on the Gulf Coast of Texas from May to August 2018 and 2019. My objective was to examine two major components of bat ecology in a region with no prior data: 1) nighttime activity and habitat use of all species and 2) day-roost use of evening bats (Nycticeius humeralis). I used autonomous acoustic detectors to assess nighttime activity of bats in various habitats across the refuge and recorded vegetation surrounding the deployment sites. I then conducted generalized linear mixed-effect models to assess drivers of bat activity. I also conducted Kruskal-Wallis non-parametric analysis of variance tests to determine differences in activity among habitats. For both analyses, I used the number of bat calls of each species in each year as response variables and habitat types and vegetation estimates as independent variables. Seven species of bats were detected and used all available habitats. Activity increased throughout the summer, likely because bat pups reached volancy. Alongside acoustics, I utilized radio telemetry to assess day-roost use of evening bats, an abundant species in the region. I radiotracked 11 evening bats to 9 unique roost locations. All bats roosted within a
Author: Elizabeth G. Crichton Publisher: Academic Press ISBN: 0080540538 Category : Science Languages : en Pages : 523
Book Description
The Reproductive Biology of Bats presents the first comprehensive, in-depth review of the current knowledge and supporting literature concerning the behavior, anatomy, physiology and reproductive strategies of bats. These mammals, which occur world-wide and comprise a vast assemblage of species, have evolved unique and successful reproductive strategies through varied anatomical and physiological specialization. These are accompanied by individual and/or group behavioral interactions, usually in response to environmental mechanisms essential to their reproductive success. - Is the first book devoted to the reproductive biology of bats - Contains in-depth reviews of the literature concerned with bat reproduction - Contributors are widely recognized specialists - Provides a powerful database for future research
Author: John M. Marzluff Publisher: Springer Science & Business Media ISBN: 9780792374589 Category : Nature Languages : en Pages : 608
Book Description
The twenty-seven contributions authored by leaders in the fields of avian and urban ecology present a unique summary of current research on birds in settled environments ranging from wildlands to exurban, rural to urban.
Author: Jennifer Windom Hollen
Author: Jennifer Windom Hollen
Author: Christian C. Voigt
Author: Johnny De Jong
Author: Kelly Russo-Petrick
Author: Richard B. Primack
Author: Jacob A. Rogers
Author: Enrico Bernard
Author: Lori Ann Campbell
Author: Elizabeth G. Crichton
Author: John M. Marzluff