Habitat Use and Spatial Ecology of Blanding's Turtle, Emydoidea Blandingii, on Squaw Creek National Wildlife Refuge, Mound City, Missouri PDF Download
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Author: Lisa Marie Lehnhoff
Publisher:
ISBN:
Category : Emydidae
Languages : en
Pages : 114
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Book Description
Author: Lisa Marie Lehnhoff
Publisher:
ISBN:
Category : Emydidae
Languages : en
Pages : 114
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Book Description
Author: Christine E. Barlow
Publisher:
ISBN:
Category : Blanding's turtle
Languages : en
Pages : 198
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Author: Gabriella Zagorski
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Mining practices can negatively impact turtles through degradation of wetlands and surrounding upland habitat, alteration of movement corridors, accidental mortality, and increased risk of nest and turtle predation. These impacts, in turn, can cause changes in patterns of energy allocation, skewed sex ratios and changed demography, which may ultimately lead to population declines. The aim of my study was to describe the demography of, and identify critical habitat for, a population of globally-endangered Blanding's turtles (Emydoidea blandingii) inhabiting an area of interest for development of a trap rock quarry. In addition to generating important knowledge about population ecology and habitat use, my study can serve as the "before" study in a BeforeAfter Control-Impact (BACI) study quantifying impacts of quarrying on turtles. Using radiotelemetry, GPS dataloggers, and capture-mark-recapture surveys, data were collected at an impact (quarry) site and a control site, and thermal data were collected during overwintering using iButtons. I captured 56 turtles at the impact site and 13 at the control site, and estimated population sizes were 79.6 +/- 17.9 (1.84 turtles/ha) and 16.0 +/- 21.2 (0.32 turtles/ha), respectively. Body size was larger at the control site, but body condition was similar at both sites. Daily distances moved and home range sizes did not differ between sites, and were generally smaller than conspecific values reported in the literature. I identified nesting (15 impact, 2 control) and overwintering (12 impact, 7 control) sites, both considered critical habitats. Overwintering water depth ranged from 30-150 cm (before ice-on) and turtles overwintered at temperatures reported previously in the literature (1.5 to 0.5 oC). My data can be used to quantitatively inform quarry development and mitigation strategies, essential components to balancing the needs of species at risk and humans.
Author: Catherine Stéphanie Millar
Publisher:
ISBN:
Category : University of Ottawa theses
Languages : en
Pages : 342
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Author: Timothy J. Crockett
Publisher:
ISBN:
Category : Blanding's turtle
Languages : en
Pages : 172
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Author: Ian Morrison
Publisher:
ISBN:
Category : Turtles
Languages : en
Pages : 30
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Book Description
Reports a study conducted to: document the movement patterns of young Blandings turtles (Emydoidea blandingii); and identify areas used by young turtles as rearing grounds and hibernation sites. The study area was located in a park in south-western Nova Scotia. The turtles were hand-reared to an age when they could be fitted with radio transmitters and were then released at four sites, three located on small brooks and the fourth at a small pond. All release sites had boggy floodplain areas dominated by shrubs, grasses, and sphagnum moss. Tagged turtles were tracked daily for the first few days after release to determine whether they would move significantly after release. When determined they would not move significantly, they were positioned by telemetry every 3-7 days and recaptured every 3-14 days. Recaptured turtles were measured and examined to determine their condition. Results are presented and discussed related to turtle survival, movement, predation, behaviour, and habitat use.
Author: Andrea M. Chaloux
Publisher:
ISBN:
Category : Blanding's turtle
Languages : en
Pages : 166
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Author: Catherine Stéphanie Millar
Publisher:
ISBN:
Category : Blanding's turtle
Languages : en
Pages : 0
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Bradley M. Poynter
Publisher:
ISBN:
Category : Blanding's turtle
Languages : en
Pages : 53
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Book Description
The Blanding's Turtle (Emydoidea blandingii) has received threatened status in the State of Ohio in 2010. The goal of this study is to provide information that can be used in conservation management to locate suitable habitat for conservation of the species as well as potential repatriation or trans location sites. Wetland Inventory and Land Use/Land Cover maps were combined with aerial photography to evaluate regions located in Ohio's Lake Erie Drainage Basin that would meet the essential requirements of the turtles life history by quantitative methods used in Geographic Information Systems (GIS) and Remote Sensing programs. This study identified suitable wetlands and vernal pools, lakes and ponds, and other areas with minimum canopy for nesting and movement. Throughout the region, the highest concentration of available habitat is found in Erie, Lucas, and Ottawa counties of the Blanding's turtle's historical range. This approach to creating Habitat Niche Models was validated by close correlation between the counties identified as having remaining appropriate habitat and the counties from the historical populations in which Blanding's turtles still remain. The potential exists to restore these areas through various means: restoring wetlands, protecting areas near agriculture that are more suitable for nesting, constructing small tunnels under roads and fences, and installing road warning signs to allow for safer migration. With protection and restoration of the habitat, the species may still have a chance to recover and become a stable population without the need for intense management.
