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Habitat Selection By The Gopher Tortoise Gopherus Polyphemus
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Book Synopsis Habitat Selection by the Gopher Tortoise (Gopherus Polyphemus). by :
Download or read book Habitat Selection by the Gopher Tortoise (Gopherus Polyphemus). written by and published by . This book was released on 2007 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: The gopher tortoise (Gopherus polyphemus) occurs in the southeastern Coastal Plain and has experienced widespread decline due to habitat loss and other human impacts. The largest remaining populations occur on private lands and military installations. Proper management at these sites will be critical to the success of the species. The goal of this study was to determine the response of gopher tortoises to forestry management practices commonly implemented in the management of the redcockaded woodpecker. We monitored habitat use of individual tortoises at four study sites with different ownership and management scenarios: Fort Gordon (military installation, winter burning), Savannah River Site (federal defense facility, winter burning, translocated population), Tillman Sand Ridge (state wildlife preserve, summer burning), and a private hunting preserve (no management). Habitat data were collected to characterize typical canopy and herbaceous vegetation of each site. Data were collected at active burrows; the anecdotal belief that tortoises select the most open habitat available was confirmed. The preferred habitat density appears to be in the range of 40 percent canopy cover, a value compatible with current woodpecker management guidelines. Results will be used to develop recommendations for the concurrent management of gopher tortoises and red-cockaded woodpeckers.
Book Synopsis Assessment of Resource Selection Using Remote Sensing and Geographic Information Systems (gis) for Two Vertebrates in Disparate Habitats by : Cherie A. Keller
Download or read book Assessment of Resource Selection Using Remote Sensing and Geographic Information Systems (gis) for Two Vertebrates in Disparate Habitats written by Cherie A. Keller and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Aerial survey data (December-March, 1991-1998) including survey tracklines and right whale locations were entered into a Geographic Information Systems (GIS) for comparing whale use of SST to availability based on search effort. Using Monte Carlo techniques, mean and standard deviation for SSTs and latitudes of whale-sightings were compared to sampling distributions derived from available SSTs and latitudes. From these data, it was concluded that the North Atlantic right whale uses SSTs and latitudes non-randomly. Broad-scale habitat selection for gopher tortoises was evaluated from the 2003 Land Cover/Land Use map (Florida Fish and Wildlife Conservation Commission). Based on land cover and ancillary data, potential gopher tortoise habitat was developed for northeast Florida.
Book Synopsis Spatial Ecology of the Gopher Tortoise (Gopherus Polyphemus) in Coastal Sand Dune Habitat by : Anthony Yin Kun Lau
Download or read book Spatial Ecology of the Gopher Tortoise (Gopherus Polyphemus) in Coastal Sand Dune Habitat written by Anthony Yin Kun Lau and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Coastal sand dunes may serve as short-term alternative recipient sites for Gopher Tortoises affected by human development.
Book Synopsis The Gopher Tortoise by : Ray E. Ashton
Download or read book The Gopher Tortoise written by Ray E. Ashton and published by Rowman & Littlefield. This book was released on 2014-08-28 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: Full-color book for children ages 10 and up. Details the life of the gopher tortoise and how it is tied in with other animals. Also discusses how the encroachment into the gopher tortoise's habitat is affecting the environment and the tortoise.
Book Synopsis Gopher Tortoise, Gopherus Polyphemus, Recovery Plan by : Wendell A. Neal
Download or read book Gopher Tortoise, Gopherus Polyphemus, Recovery Plan written by Wendell A. Neal and published by . This book was released on 1990 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ecology and Habitat Protection Needs of Gopher Tortoise (Gopherus Polyphemus) Populations Found on Lands Slated for Large-scale Development in Florida by : James A. Cox
Download or read book Ecology and Habitat Protection Needs of Gopher Tortoise (Gopherus Polyphemus) Populations Found on Lands Slated for Large-scale Development in Florida written by James A. Cox and published by . This book was released on 1987 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Conservation and Coexistence of a Federally Listed Species Within a Landscape Highly Modified for Commodity Production: Gopher Tortoise (Gopherus Polyphemus) and Intensive Pine (Pinus Spp.) Management by : Duston R. Duffie
Download or read book Conservation and Coexistence of a Federally Listed Species Within a Landscape Highly Modified for Commodity Production: Gopher Tortoise (Gopherus Polyphemus) and Intensive Pine (Pinus Spp.) Management written by Duston R. Duffie and published by . This book was released on 2020 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gopher tortoise (Gopherus polyphemus; hereinafter, tortoise) is listed as threatened under the Endangered Species Act in the western portion of its range. Across the species’ range, approximately 70 % of potential habitat is privately owned, and these properties are often managed primarily for timber production. However, tortoise ecology on private, working forest landscapes remains poorly understood. To provide a better understanding of tortoise response to active forest management, I evaluated population demographics, movement ecology, and habitat selection of two tortoise populations: former Ben’s Creek Wildlife Management Area (BC) in Washington Parish, Louisiana and Perry County Gopher Tortoise Management Unit (PCGTMU) in Perry County, Mississippi. At BC, tortoises were generally clustered along utility rights-of- way and roadways. At PCGTMU, tortoises were clustered within forest stands with high quality soils. Low recruitment has been documented at BC for the last 25 years. However, PCGTMU appears to have a stable population with active recruitment.
Book Synopsis Environmental Effects on Gopher Tortoise (Gopherus Polyphemus) Burrows by : Ron Christian Sambeli
Download or read book Environmental Effects on Gopher Tortoise (Gopherus Polyphemus) Burrows written by Ron Christian Sambeli and published by . This book was released on 2017 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: The gopher tortoise (Gopherus polyphemus) is a keystone species that provides a habitat for hundreds of other animal species. While environmental temperatures may fluctuate, gopher tortoise burrows maintain a fairly constant temperature. This study examines data collected from 50 burrows found in Abacoa Jupiter Greenway range VIa. Variables considered when analyzing the data include weather conditions, burrow location, and whether the temperature was measured from the air, the burrow's apron, or from within the burrow. The results were compared to previous research conducted on gopher tortoises.
Book Synopsis The Thermal Biology of the Gopher Tortoise (Gopherus Polyphemus) and the Importance of Microhabitat Selection by : Noah J. Anderson
Download or read book The Thermal Biology of the Gopher Tortoise (Gopherus Polyphemus) and the Importance of Microhabitat Selection written by Noah J. Anderson and published by . This book was released on 2001 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Species Profile: Gopher Tortoise (Gopherus Polyphemus) on Military Installations in the Southeastern United States by :
Download or read book Species Profile: Gopher Tortoise (Gopherus Polyphemus) on Military Installations in the Southeastern United States written by and published by . This book was released on 1997 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: The gopher tortoise (Gopherus polyphemus) is the only tortoise that occurs east of the Mississippi River. The U.S. Fish and Wildlife Service has separated the species into two main populations. The western population (southwest Mississippi and southeast Louisiana) is Federally listed as threatened; the eastern population, which occurs in southern Alabama and Georgia, extreme southwestern South Carolina, and most of Florida, is a former candidate for listing as threatened. Gopher tortoises occupy a wide range of open, upland habitats with a well-drained, deep sandy substrate, primarily longleaf pine-xerophytic oak woodlands (sandhills). They have been documented on several military installations in the Southeast. This report is one of a series of 'Species Profiles' being developed for threatened, endangered, and sensitive species inhabiting southeastern United States plant communities. The work is being conducted as part of the Department of Defense (DoD) Strategic Environmental Research and Development Program (SERDP). The report is designed to supplement information provided in plant community management reports for major United States plant communities found on military installations. Information provided on the gopher tortoise includes status, life history and ecology, habitat requirements, impacts and cause of decline, management and protection, and inventory and monitoring.
Book Synopsis Determining Habitat Preferences of the Juvenile Gopher Tortoise (Gopherus Polyphemus) Using Spatially Modeled Vegetation on a Central Florida Sandhill by : Kristan Marie Nicole Raymond
Download or read book Determining Habitat Preferences of the Juvenile Gopher Tortoise (Gopherus Polyphemus) Using Spatially Modeled Vegetation on a Central Florida Sandhill written by Kristan Marie Nicole Raymond and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: Public and private conservation areas are becoming increasingly important to the continued survival of the gopher tortoise, making it imperative that land managers know the specific habitat requirements of juvenile gopher tortoises because recruitment is key to species persistence. Little is currently known about environmental factors that underlie hatchling and juvenile survival and recruitment in gopher tortoise populations. Because of the short duration and distance of juvenile tortoise foraging journeys, food availability, thermoregulatory conditions, and refugia near the burrow may considerably affect juvenile growth and survival. This two-year study of a central Florida sandhill examines the spatial relationship between juvenile gopher tortoise burrows and the surrounding habitat. Gopher tortoise burrow positions, activity, and width were recorded in four complete surveys of the 4-hectare study area. Coincident with three of the burrow surveys, vegetation and structural habitat characteristics, such as forb and canopy cover, were surveyed in a uniform grid design. Vegetation cover was reclassified using habitat suitability functions (HSFs) derived from qualitative literature values and combined into habitat suitability indices (HSIs) to model the relationships between habitat variables and the likelihood of juvenile gopher tortoise presence. Chi-squared tests and spatial point pattern analysis were used to validate and identify well-forming models. In general, the best performing HSI models for the juvenile gopher tortoise were those that incorporated all three gopher tortoise life requisites in a compensatory relationship (geometric mean): thermoregulation (total high canopy, bare ground, or litter), predation (oak mid-canopy), and food (forb or wiregrass). The models could be improved by using the observed relative abundance of juvenile burrows in each vegetation cover class to modify the HSFs. These methods will help identify habitat characteristics associated with active juvenile gopher tortoise burrows that can be used by public and private land managers to improve existing tortoise habitat and to identify high-quality habitat for future preserves.
Book Synopsis Gopher Tortoise Habitat Management, Strategies and Options by : Gopher Tortoise Council. Meeting
Download or read book Gopher Tortoise Habitat Management, Strategies and Options written by Gopher Tortoise Council. Meeting and published by . This book was released on 1988 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modeling Burrow Choice in Gopherus Polyphemus by : Christopher Olbrych
Download or read book Modeling Burrow Choice in Gopherus Polyphemus written by Christopher Olbrych and published by . This book was released on 2016 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gopher tortoise populations, declining due to habitat fragmentation and degradation, are in need of revised management practices that take into account the individual site’s needs and limitations. The site of concern in this research is the Greenway in Jupiter, FL, which is suffering habitat degradation due to overgrowth driven by a lack of controlled burns or alternative management methods on site. A simple econometric model is developed characterizing the effects of environmental factors that influence the occupancy of burrows by gopher tortoises. A greater understanding of environmental factors affecting gopher tortoise habitat will allow land management practices to best meet the needs of this keystone species at the Greenway nature area.
Download or read book Gopher Tortoise written by and published by . This book was released on 2005 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: The South Carolina Department of Natural Resources published guides to many threatened animals living in the state. This guide gives information about the gopher tortoise, including description, status, habitat, conservation challenges & recommendations, and measures of success.
Book Synopsis Habitat Assessment for Gopher Tortoise (Gopherus Polyphemus) and Grassland Birds in South Mississippi by : Nathan Andrew Stukey
Download or read book Habitat Assessment for Gopher Tortoise (Gopherus Polyphemus) and Grassland Birds in South Mississippi written by Nathan Andrew Stukey and published by . This book was released on 2017 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: I studied eight habitat types of south Mississippi from 2009-2010 to examine habitat conditions and faunal communities associated with the presence of gopher tortoise burrows (Gopherus polyphemus). Field methods included burrow surveys, vegetation sampling, mound counts, and point count surveys. Active tortoise burrow presence was influenced by percent coverage of bare ground, native legumes, grass-like plants, basal area, overstory canopy, and woody plants. Fire ant mound densities were influenced by percent coverage of overstory canopy cover, bare ground, grass-like vegetation, and woody plants. Northern bobwhite (Colinus virginianus) and Bachman’s sparrow (Peucaea aestivalis) were detected more frequently in longleaf pine (Pinus palustris) dominated habitats supporting gopher tortoises. My findings will be used to address the paucity of information related to gopher tortoise conservation on private and public lands and identify potential areas for inclusion in conservation initiatives supporting longleaf pine restoration or gopher tortoise conservation in the southeastern lower coastal plain.
Book Synopsis Long-term Population Ecology and Movement Patterns of Gopher Tortoises (Gopherus Polyphemus) in Southwest Georgia by : Alexander David Wright
Download or read book Long-term Population Ecology and Movement Patterns of Gopher Tortoises (Gopherus Polyphemus) in Southwest Georgia written by Alexander David Wright and published by . This book was released on 2016 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Habitat loss, fragmentation, and degradation have led to an estimated 80% range-wide decline of gopher tortoise (Gopherus polyphemus) populations across the Southeastern Coastal Plain. Recently, the gopher tortoise was identified as a candidate for listing under the Endangered Species Act in the eastern part of its range. To support an adaptive landscape planning and decision framework for gopher tortoise conservation, I examined the population dynamics and movement patterns of four gopher tortoise populations on a large private reserve in southwestern Georgia, where tortoises were previously marked/recaptured from 1995-2000. It is critical to understand how tortoise populations vary in space and time at large spatial and temporal scales to protect a long-lived species, such as the gopher tortoise, into perpetuity. With further understanding of the long-term population ecology and movement patterns, we can better evaluate the roles of emigration and survival within populations to inform reserve design and decision analysis for the species' conservation.
Book Synopsis Biology and Conservation of North American Tortoises by : David C. Rostal
Download or read book Biology and Conservation of North American Tortoises written by David C. Rostal and published by JHU Press. This book was released on 2014-08-01 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most comprehensive book ever published on North America's native tortoises. Tortoises, those unmistakable turtles, evolved from a lineage that split off from the familiar pond turtles roughly 100 million years ago. Over time, these plant-eating land turtles spread around the world, growing to an enormous size (depending on the species) and living so long that they have become the stuff of legends. By most accounts, they are indeed the longest-lived of the turtles, with good records suggesting individuals may live as long as 180 years (anecdotal records suggest that some reach ages of 200 years or more). Providing the first comprehensive treatment of North America’s tortoises, Biology and Conservation of North American Tortoises brings together leading experts to give an overview of tortoise morphology, taxonomy, systematics, paleontology, physiology, ecology, behavior, reproduction, diet, growth, health, and conservation. The contributors carefully combine their own expertise and observations with results from studies conducted by hundreds of other researchers. The result is a book that belongs in the library of every herpetologist. Contributors Gustavo Aguirre L. Linda J. Allison Matthew J. Aresco Roy C. Averill-Murray Joan E. Berish Kristin H. Berry Dennis M. Bramble K. Kristina Drake Taylor Edwards Todd C. Esque Richard Franz Craig Guyer J. Scott Harrison Sharon M. Hermann J. Howard Hutchison Elliott R. Jacobson Valerie M. Johnson Richard T. Kazmaier Earl D. McCoy Philip A. Medica Robert W. Murphy Henry R. Mushinsky Kenneth E. Nussear Michael P. O’Connor Thomas A. Radzio David C. Rostal Lora L. Smith James R. Spotila Craig B. Stanford C. Richard Tracy Tracey D. Tuberville Michael Tuma Thane Wibbels
