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 15 of 15 for “"Bird Migration"”.
-
An Experimental Study of the Role of the Gonads in the Annual Stimulus for Bird Migration
Made available in DSpace on 2014-12-04T22:45:58Z (GMT). No. of bitstreams: 1 0016437.pdf: 5601514 bytes, checksum: a27647e17dd1f310f1956b450137ea9f (MD5) Previous issue date: 1956
-
When the Map Fails the Territory: Hidden State Models, Complex Traits and the Evolution of Bird Migration
… discrete datasets (Chapter ref{ch:1}). Taking bird migration as an example of a hard-to-measure complex trait, I then develop new continuous metrics of bird movement from large-scale community science (eBird) data, using entropy-based measures and phylogenetically aligned component analysis …
-
Birds/Bats Motion Tracking with Infrared Radiation Camera for Wind Farm Applications
… efficient monitoring system for analyzing the bird migration data for wind farm applications. This system is able to process thermal image sequence data and output accurate results suitable for interpretation by wild life biologists. An IR video processing algorithm has been proposed which …
-
Riemannian Metric Learning via Optimal Transport
… the quality of trajectory inference on scRNA and bird migration data at the cost of little additional cross-sectional data.
-
Visual analysis and synthesis with physically grounded constraints
… noisy videos with an ecological application to bird migration monitoring at night. The resulting algorithms are simple and intuitive while achieving state-of-the-art performance without the need of training on an exhaustive set of visual examples."
-
The Role of Long Distance Movement and Genetic Adaptation on the Evolution of West Nile virus in the New World
… is maintained in an epizooitic cycle involving birds and mosquitoes. After a long history of circulation in the Old World, WNV was introduced into the US and identified in the New York Metropolitan Area during the summer of 1999. While the initial outbreaks were restricted to the northeastern …
-
Landscape + Sky: land use analysis at the scale of flight
… use trends and ecological resources relevant to bird migration and endangered species conservation efforts. From the scale and perspective of avian flight, and through my experience as a pilot, I demonstrate how the sequence of flight can create a model for understanding the relationship between …
-
Spring Phenology and Trophic Ecology of Trees, Caterpillars, and Migrating Neotropical -Nearctic Songbirds
… and vireos (Vireonidae) during spring migration in 2001--2003 at Trelease Woods, a deciduous forest fragment near Urbana, Illinois, USA (40°09'N, 88°10'W). I hypothesized that (1) the photoperiod-driven pattern of migration of wood warblers and vireos through the stopover is …
-
Reduction of wildlife on airfields through turfgrass selection
… and economic concern for the aviation industry. Birdstrikes in particular are increasing due to rises in both the number of aircraft flights and the populations of several of the most hazardous bird species in North America. Traditional avian management practices at airports, including the use of …
-
Birds along a transect across KwaZulu-Natal: altitudinal preference and altitudinal migration
… best places in the world to study altitudinal bird migration. This dissertation uses the bird data from the Second Southern African Bird Atlas Project (SABAP2), and altitudinal data from a Digital Elevation Model to try to understand altitudinal migration in a band of KwaZulu-Natal between 29°S …
-
Improved Intermittent Clutter Filtering For Wind Profiler Radar
… various airborne objects, such as aircraft or birds, which generate strong, intermittent contributions to the received signal. The standard RWP signal processing is not able to deal with these signals in an efficient way, because the model assumption on which the processing is based is …
-
Migratory Stopover of Songbirds in the Western Lake Erie Basin
Songbirds use multiple stopover locations to rest and refuel for subsequent flights while migrating between breeding and non-breeding areas. Selection of high quality stopover habitat may allow migrants to minimize time and energy spent in migration and maximize fitness. Migrants should therefore …
-
Incorporating biotic interactions in phenology
… in the timing of phenological events such as bird migration, leaf unfolding, flowering, and insect emergence, across many taxa and ecosystems are a result of climate change. Phenological shifts depend on different factors and species-specific sensitivity to changes in meteorological variables, …
-
Shorebird migration in western Kentucky: phenology, habitat use, and possible effects of prey availability
… coasts provide reliable food resources and shorebirds may use the same stopover locations every year. However, shorebirds use sites opportunistically in the interior of North America due to the transient nature of many habitats. Little is known, however, about the use of wetlands by migrating …