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Determining Habitat Preferences Of The Juvenile Gopher Tortoise Gopherus Polyphemus Using Spatially Modeled Vegetation On A Central Florida Sandhill
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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 The Diet of the Gopher Tortoise, Gopherus Polyphemus, in a Sandhill Habitat in Central Florida by : Laurie Ann Macdonald
Download or read book The Diet of the Gopher Tortoise, Gopherus Polyphemus, in a Sandhill Habitat in Central Florida written by Laurie Ann Macdonald and published by . This book was released on 1986 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 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 Modeling Gopher Tortoise (Gopherus Polyphemus) Habitat in a Fire-dependnent Ecosystem in North Florida by : Christina Legleu
Download or read book Modeling Gopher Tortoise (Gopherus Polyphemus) Habitat in a Fire-dependnent Ecosystem in North Florida written by Christina Legleu and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 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 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 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 Effects of Gopher Tortoise (Gopherus Polyphemus) Disturbances on the Microenvironment and Vegetation of a Florida Sandhill by : Sue A. Kaczor
Download or read book Effects of Gopher Tortoise (Gopherus Polyphemus) Disturbances on the Microenvironment and Vegetation of a Florida Sandhill written by Sue A. Kaczor and published by . This book was released on 1988 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Home Range, Activity, and Burrow Use of Juvenile Gopher Tortoises (gopherus Polyphemus) in a Central Florida Population by : Dawn S. Wilson
Download or read book Home Range, Activity, and Burrow Use of Juvenile Gopher Tortoises (gopherus Polyphemus) in a Central Florida Population written by Dawn S. Wilson and published by . This book was released on 1990 with total page 86 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 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.
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 Reintroduction of Gopher Tortoises (Gopherus Polyphemus) to Reclaimed Phosphate Land by : Laurie Ann Macdonald
Download or read book Reintroduction of Gopher Tortoises (Gopherus Polyphemus) to Reclaimed Phosphate Land written by Laurie Ann Macdonald and published by . This book was released on 1996 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Investigation of Habitat Suitability Factors and Their Interactions for Predicting Gopher Tortoise Habitat by : Abigail V. Lavallin
Download or read book An Investigation of Habitat Suitability Factors and Their Interactions for Predicting Gopher Tortoise Habitat written by Abigail V. Lavallin and published by . This book was released on 2018 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis evaluates the interaction between four habitat factors vital to the gopher tortoise in Florida. Federally and state listed as threatened throughout its entire range, the gopher tortoise is vital to protect, not only for itself individually but its burrows provide an essential habitat to over 300 species making it a key stone species within its environment. Historic habitat modeling methods are reviewed for the gopher tortoise to highlight the gap on this topic. This research expanded on the methods utilized by Baskaran et al. (2006) evaluating the soil, landcover, percentage of canopy cover and the depth to water table habitat factors key to the gopher tortoise. Statistical analysis was used to establish the interactions using a regression type analysis of the presence/absence data relative to the four factors. A probability map for the study site was then computed from the results. The Analysis of Deviance results for the statistical model with land cover type as an independent variable and a 3-way interaction term for the other factors found that the land cover term was significant as an independent variable and the 3-way interaction of the other 3 habitat factors was significant. This result demonstrates that there is in fact an interaction between the habitat factors influencing the location of gopher tortoises. This finding is significant in future gopher tortoise research as it indicates that habitat factors evaluated individually may not be as important as the interactions between the factors. By understanding the interactions between the habitat factors, the FWC can work alongside other agencies to increase and improve these key habitat areas preventing them from destruction. The map results also help pinpoint those fragmented potential habitat sites which are most at risk from full destruction and loss allowing agencies the work on protecting and expanding the suitable habitat landscape in order to enhance and restore the gopher tortoise populations residing there, helping them to maintain the gopher tortoises function as a keystone species
Book Synopsis The Foraging Ecology of the Juvenile Gopher Tortoise, Gopherus Polyphemus by : Terri Anne Stilson
Download or read book The Foraging Ecology of the Juvenile Gopher Tortoise, Gopherus Polyphemus written by Terri Anne Stilson and published by . This book was released on 2001 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
