Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 31 for “"Sciurus"”.
-
Spatial ecology of grey squirrels (Sciurus carolinensis) in an urban environment
The North American eastern grey squirrel (Sciurus carolinensis) is a<br/>highly invasive species that has replaced the sympatric native Eurasian red<br/>squirrel (Sciurus vulgaris) across much of the United Kingdom through<br/>exploitative competition and disease spread. The city of Aberdeen …
-
Ecology of frontier populations of the invasive grey squirrel (Sciurus carolinensis) in Ireland
… biological invaders. The eastern grey squirrel (Sciurus carolinensis) is the most commonly introduced squirrel species worldwide. This research addressed the grey squirrel invasion and frontier population biology. Novel results were generated through diverse research techniques. Public sighting …
-
Competition Between Fox (Sciurus Niger) and Gray (S. Carolinensis) Squirrels (Illinois, Habitat Selection, Behavior)
The role of competition in free-living populations of tree squirrels was evaluated by manipulating female fox squirrel numbers and monitoring the response of gray squirrels. Supplemental feeding with native mast was used to determine if food was limiting for squirrel populations in east-central …
-
Effects of tannins on protein digestibility and detoxification activity in gray squirrels (Sciurus carolinensis)
Captive gray squirrels were fed acorns or diets containing commercial tannins to determine the effects of tannins on digestion and detoxification (glucuronidation) activity. In the Acorn experiment, Northern red oak acorns (Quercus rubra), white oak acorns (Q. alba), or rat chow were fed to …
-
A new method of aging gray squirrels (Sciurus carolinensis) by use of cementum annuli
Squirrel teeth were decalcified in a modified formic acid-sodium citrate solution and sectioned longitudinally with a razor blade. The sections were stained with Harris' hematoxylin and eosin and viewed under a microscope using reflected light. Tooth development was used for separating spring and …
-
Nutrition, Supplemental Feeding, and Body Composition of the Fox Squirrel, Sciurus Niger, in Central Illinois
Made available in DSpace on 2014-12-14T16:11:14Z (GMT). No. of bitstreams: 1 7811249.pdf: 4887787 bytes, checksum: a326f85c087a4dceac13c67c0cedc565 (MD5) Previous issue date: 1978
-
Building a Predictive Model of Delmarva Fox Squirrel (Sciurus niger cinereus) Occurrence Using Infrared Photomonitors
… federally endangered Delmarva fox squirrel (DFS; Sciurus niger cinereus). The ability to predict or identify suitable habitat is a necessary component of this species' recovery. Habitat identification is also an important consideration when evaluating impacts of land development on this species …
-
A Comparison of Eastern Gray Squirrel (Sciurus Carolinensis) Nesting Behavior among Habitats Differing in Anthropogenic Disturbance
Eastern gray squirrels inhabit a large range of heterogeneous habitats and climates, and live with various levels of anthropogenic disturbance. Previous studies have examined this species in unmodified and modified surroundings; however, a comparison of populations between these habitats has yet to …
-
Effect of a supplemental food supply on the reproductive attainment of the gray squirrel (Sciurus carolinensis)
The effect of a supplemental food supply on the reproductive attainment of the gray squirrel was investigated in the squirrel populations of two food supplemented Experimental and two Control woodlots near the campus of Virginia Polytechnic Institute and State University, Blacksburg, Virginia, from …
-
A survey of the food habits of the gray squirrel (Sciurus carolinensis) in Montgomery County, Virginia
The examination of one-hundred-thirteen gray squirrel stomachs collected throughout the year revealed a total of seventy-eight food items eaten. Only four, however, contributed more than half of the entire diet for any season. In the fall, hickory nuts (36%), fungi (26%), white oak acorns (12%), …
-
Behavioral differences in urban Sciurus carolinensis with varying human exposure as a model for synanthropic human-animal relationships
… and depend on humans for their survival. Sciurus carolinensis, the eastern gray squirrel, symbolizes a distinctive coexistence between human and wildlife as they are commonly fed in parks and gardens. They are native to the eastern United States. Where they are invasive, they are found …
-
Esquilos Sciurus alphonsei (Mammalia: Rodentia) como dispersores de Attalea oleifera (Arecaceae) em remanescente da Floresta Atlântica Nordestina, Brasil
Este estudo investigou o papel do esquilo, Sciurus alphonsei, como dispersor de frutos de Attalea oleifera em um remanescente da floresta Atlântica do Nordeste brasileiro. Durante 4 meses as visitas de esquilos foram monitoradas em 15 palmeiras, perfazendo 118 horas de observação planta focal, com …
-
Resource Selection, Home Range and Habitat Associations of the Southern Fox Squirrel (<i>Sciurus niger niger</i>) in the Piedmont and Coastal Plain of Virginia
The southern fox squirrel (Sciurus niger niger) has the northernmost part of its range in Virginia. For the past 100 years, southern fox squirrels have been declining due to habitat fragmentation, cover type conversion, and fire suppression. Decrease in growing season burns, hardwood encroachment …
-
Effects of Road Characteristics, Land Cover, and Topography on Roadkill Patterns Across a Rural-Urban Gradient in Southwest Virginia
… most frequent roadkill taxa were tree squirrels (Sciurus sp.), opossums (Didelphis virginiana), striped skunks (Mephitus mephitis), and raccoons (Procyon lotor). I found three roadkill hotspots, all along a major highway, and a high frequency of roadkill in spring, autumn, and early winter. High …
-
The role of seed attributes in eastern gray squirrel foraging
… of seed attributes in eastern gray squirrel (Sciurus carolinensis) foraging behavior from an evolutionary, economic, ecological and biochemical perspective. From an evolutionary perspective (chapter 2), I found that squirrel foraging behaviors are influenced by a combination of …
-
Caracterización de la composición florística y estructural del bosque de la finca El Tule, Volcán Mombacho, Granada, Nicaragua
… fueron Aluatta vi/losa (mono congo), Sciurus variegatoides (ardilla), Ca/ocita formosa (urraca), Aratinga canicularis (Chocoyo), Culombina rufinipendis (paloma san nicolas) y Cebus capuchinus (mono cara blanca).
-
Acorn Contribution to Mammalian Energetics
… (Peromyscus leucopus), eastern gray squirrels (Sciurus carolinenis), and fox squirrels (S. niger). Oak trees (genus (Quercus) produce variable amounts of acorn mast each autumn. Variation in acorn crop yields has been shown to affect reproductive success, population size, body condition, and …
-
Barrier Effects Of Roads And Traffic On Animal Occurrence, Space Use, And Movements
… obligate, the Mount Graham red squirrel (Tamiasciurus hudsonicus grahamensis), as our study organism to assess effects of traffic noise on animal occurrence and demonstrated that traffic noise had spatially extensive and negative effects on site occupancy after accounting for effects of …
Page 1 of 2