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 19 of 19 for “"migration distance"”.
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Stopover behavior and refueling physiology in relation to migration distance in Wilson's Warblers (Wilsonia Pusilla)
… how inter-individual variation in total migration distance within a species affects stopover behavior and refueling rate. Wilson’s Warbler is a leapfrog migrant passerine that winters in Central America and breeds throughout North America. Birds were captured in the spring and fall of …
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An examination of differential survival in downstream migrating coho salmon smolts
… I examined mortality during the downstream migration of coho salmon (0. kisutch) smolts by trapping and marking smolts high in the watershed and recapturing the fish near the ocean. Four study sites were used, two in the upper watershed and two in the lower watershed. At both distances, …
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Advancements in Isotopic Geolocation Tools for Insect Migration Research
… provide important ecosystem services, yet the migration phenomenon is understudied in insects compared to vertebrates. In this thesis, I aim to deepen our understanding of insect migration, using the monarch butterfly Danaus plexippus (L.) and the painted lady butterfly Vanessa cardui (L.) as …
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Capture and control of excitations
… two of its properties: the long exciton migration it exhibits, and its ability to be irreversibly photobrightened and reversibly photodarkened under continuous illumination. I show the exciton migration distance is due to strong nearest-neighbor coupling along a helical direction that is …
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Reduce the charge risking applying migration tracers
… post drill the focus is now on charge and migrations, as the proven source rock quantity and quality are in many cases proven. Current charge risking primarily relies on basin models built on geophysical, geological, geochemical source rock parameters. Geochemical post well analyses are …
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Lateral Migration of the Red River, in the Vicinity of Grand Forks, North Dakota
… methods to document the path of lateral channel migration along areas of this highly sinuous, low-gradient river. Specifically, historical aerial photographs, cross sectional elevation based models, and PLAT maps were used to determine how the river channel has laterally migrated over the past …
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Essays on migration
Migration is one of the main forces shaping our society as we know it. Focusing on the determinants of migration and its influence on local communities, this dissertation consists of three chapters. Chapter 1 provides a brief introduction to the thesis, covering the motivation for the research, the …
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Population Ecology of Rocky Mountain Elk in the Black Hills, South Dakota and Wyoming
… cow elk. We documented elk using a variety of migration strategies (obligate migrator, resident, conditional migrator, disperser); the majority of the population (58%) was migratory. Spring migration distance travelled ranged from 2.45 km – 74.44 km (n = 42); fall migration distances ranged …
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Movements, Survival, and Sightability of White-Tailed Deer in Southeastern South Dakota
… objectives of my study were to document seasonal migration, estimate survival rates for female adult white-tailed deer, and generate a sightability model for deer in southeastern South Dakota. Secondary objectives were to calculate seasonal home ranges and document cause-specific mortality. Forty …
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Evaluating the effects of acoustic stimulation on fibroblast cell migration and muscle fibre formation.
… minutes) on wound/scratch assays, the mean cell migration distance (µm), actin and vinculin organisation, cell viability, muscle fibre diameters and the effects of temperature were investigated. The results show that 100Hz acoustic vibration can enhance cell migration, wound healing in LL24 and …
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The structure and dynamics of spawning aggregations of coral reef fish
… were formed, and (4) individuals’ patterns of migration to spawning aggregation sites. All fieldwork was conducted on the inshore reefs of Kimbe Bay, New Britain, Papua New Guinea (5o30’S 150o6’E). Spawning aggregations of reef fish were located by intensively searching areas of reef on snorkel …
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Controlled Migration of Retinal Progenitor Cells Within Electro-Chemotactic Fields
… of restored visual response depends upon the migration of transplanted cells from insertion in the sub-retinal space to the outer nuclear layer (ONL). However, transplantation efficiency is exceedingly low – ~5% cells transplanted enter the retina – directly limiting the efficacy of the …
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Ecology, Growth, and Migration of Pseudoplatystoma fasciatum in the Amazon Basin
… nutrients and connects habitats through migration. It is also a source of food security and income for riverine people in the Amazon basin. This species is heavily fished and may be threatened by the growing construction of hydropower dams. One ecological aspect lacking in the literature …
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Lake Sturgeon (Acipenser fulvescens) Population Attributes, Reproductive Structure, and Distribution in Namakan Reservoir, Minnesota and Ontario
… using radioimmunoassay. The greatest recorded distance traveled by a lake sturgeon was 130 km. In general, females traveled greater distances (mean=38.8 km) than males (mean=29.9 km). Lake sturgeon of both sexes traveled greater distances during the spawning and post-spawning periods compared …
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Plasmid deoxyribonucleic acid of strains of the saccharolytic intestinal Bacteroides
… to 65 megadaltons (Mdal) as estimated from their migration distance in agarose gels during electrophoresis. A small plasmid of 2 to 6 Mdal was found in 42 of the plasmid bearing strains. Seventeen of these strains also contained larger plasmids (20 to 65 Mdal). Ten strains contained only a large …
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Blood plasma-mediated effects on regenerative features of a novel adult human cardiac stem cell population
… heart regeneration in terms of proliferation, migration, senescence, and global gene expression. Here, the identification of a novel multipotent hCSC population from the heart auricle of patients undergoing routine cardiac surgery enabled the establishment of a cellular model to study human …
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Migration of Recent College Graduates
… and background characteristics on the migration of a recent cohort of bachelor degree recipients. The National Postsecondary Student Aid Study (NPSAS:2000) data and the Baccalaureate and Beyond (B&B:2000/2001) data are used to address the following questions: Who migrates after …
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Movement Patterns, Survival, and Sightability of White-Tailed Deer (Odocoileus virginianus) in Eastern South Dakota
… a total of 55 seasonal movements during 4 migration periods. Snow depth and temperature were the primary causes of seasonal migration. Mean migration distance between seasonal home ranges was 4.76 km (SE= 0.38). A total of 119 individual home ranges was calculated during 4 periods of …
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Movement Patterns of White-Tailed Deer in East Central South Dakota Relative to Winter Ranges and Management Unit Boundaires
… a total of 49 seasonal movements during 4 migration periods; spring 2005 (n = 5), fall 2005 (n = 8), spring 2006 (n = 20), and fall 2006 (n = 16). Temperature was the primary cause of seasonal migration. Mean migration distance between seasonal home ranges was 19.4 km (SE = 2.0). Percentage …