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.
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Showing 1 to 8 of 8 for “"Nest location"”.
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Biotic and Abiotic Characteristics Influencing Nest Location and Trophic Relationships of the Fungus-Growing Ant <i>Trachymyrmex septentrionalis</i> (Formicidae: <i>Attini)</i>
… found to be significantly higher around inactive nests. Plant cover, which would affect light intensity around the nests, was significantly higher above active nests (71.1%) than over inactive nests (57.9%). Soil samples from <em>T. septentrionalis</em> populated and adjacent, unpopulated sites …
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Life-History Evolution and Population Dynamics of a Neotropical Forest Bird (Hylophylax Naevioides)
Finally, I investigated nest-reuse decisions made by Spotted Antbirds and found that over a quarter of all nest attempts were located at a previously used nest site. Pairs were more likely to reuse previously successful nests, especially for a consecutive nest attempt, than previously depredated …
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Perspectives from above: The role of altitude in bumblebee spatial orientation and navigation
… world to find food, shelter or their home location. Flying insects like bumblebees master these task despite their relatively small brain size. They acquire visual memories of their nest location, well hidden from predators, to return home after their forag- ing trips. With this thesis I …
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Use of magnetic and olfactory cues for orientation by a fossorial rodent, Thomomys talpoides
… 1) field homing of displaced animals, 2) nest location in an 8-arm maze, and 3) movement through a complex labyrinth. Homing results, analyzed by V-test, indicated that the gophers displaced from their burrow systems relied on magnetic cues for homing orientation. Although Rayleigh …
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The influence of aspect and forest edge effects on the ecology of the wood ant, Formica rufa L. (Hymenoptera: Formicidae)
… edge to interior transects, a total of 82 sample nests and five control points within four study aspects located around the wood. Nest location and characteristics, density, colony structure, and the phenology of activities were also recorded. Overall, southern transects received more light but …
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Etude des facteurs écologiques et écotoxicologiques impliqués dans la réussite d’incubation chez la tortue luth, Dermochelys coriacea, de Guyane Française
… success is lower for this species than on other nesting sites, emphasising the problem of recruitment for the population. Understanding the causes of low hatching success is therefore an important conservation step towards preventing extinction in this population. During my thesis, I investigated …
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Factors Affecting the Distribution and Abundance of Microtus Ochrogaster and M. Pennsylvanicus in East-Central Illinois (Competition, Agonistic)
… predation risk resulting from differences in nest location is responsible for the preference of M. pennsylvanicus for dense vegetation and tolerance of M. ochrogaster for sites with more sparse cover. A series of three manipulative field experiments using the addition or removal of …
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Does Urbanization Facilitate the Establishment of Introduced Monk Parakeet (Myiopsitta monachus) Populations?
… determine what landscape features Monk Parakeet nests might be associated with and to further our understanding of why Monk Parakeets have so far remained in urban environments, as well as identify if there were any differences in these habitat associations across the United States. I used tree …