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 20 for “"Calidris"”.
-
The feeding ecology of curlew sandpipers "Calidris Ferruginea" in the South-Western Cape, South Africa
… potentially available to curlew sandpipers Calidris ferruginea at Langebaan Lagoon (33°s, 18°E), South Africa, are described for the period February 1974 - March 1975. Seasonal changes in the diet of curlew sandpipers foraging in the intertidal sandflats and marshes were studied, and the …
-
The feeding ecology of curlew sandpipers Calidris ferrugineol in the South - Western Cape, South Africa
… potentially available to curlew sandpipers Calidris ferruginea at Langebaan Lagoon (33°s, 18°E), South Africa, are described for the period February 1974 - March 1975. Seasonal changes in the diet of curlew sandpipers foraging in the intertidal sandflats and marshes were studied, and the …
-
Demography and Behavior of Western Sandpipers (Calidris mauri) Breeding on the Yukon-Kuskokwim River Delta, Alaska
… and behavioral studies of Western Sandpipers (Calidris mauri) breeding on the Yukon-Kuskokwim River Delta, Alaska (1998-2005). In chapter one, I estimated apparent annual survival (product of true survival and site fidelity) while correcting for the probability of encounter for 237 males and …
-
Factors affecting Western Atlantic red knots (Calidris canutus rufa) and their prey during spring migration on Virginia's barrier islands
… (Canada) migratory Western Atlantic red knots (Calidris canutus rufa, 'red knot') use Virginia's barrier islands as stopover habitat to regain the fat required to continue flights to breeding grounds. Because the red knot completes one of the longest avian migrations in the world and relies on …
-
INDIRECT EFFECTS OF LOW AMPLITUDE ARVICOLINE CYCLES ON DAILY NEST SURVIVAL OF DUNLIN (CALIDRIS ALPINA HUDSONIA) IN A RAPIDLY CHANGING CLIMATE
… effects of arvicoline rodent cycles on Dunlin (Calidris alpina hudsonia) reproduction in Churchill, Manitoba. Using 10 years of field data, the study suggests collared lemming (Dicrostonyx richardsoni) cycles did not influence Dunlin nest success. Meadow vole (Microtus pennsylvanicus) cycles had …
-
Effects of Spatial and Temporal Variation in Resource Availability on the Growth Rates and Survival of Dunlin (Calidris Alpina Hudsonia) Chicks
… in arthropod biomass. Movements of Dunlin (Calidris alpina hundsonia) chicks were observed from hatch until fledging to investigate whether chicks responded to resource hotspots. Dunlin chicks, however, did not significantly respond to hotspots of arthropod biomass. Despite potential …
-
Using Light-Level Geolocation to Investigate the Carry-Over Effects of Long-Distance Migration on the Reproductive Success of Dunlin (Calidris Alpina Hudsonia)
… shorebird. I showed that female Dunlin (Calidris alpina) breeding in Churchill, MB laid eggs of increased volume after migrating longer distances at decreased speeds. Nest survival increased for female Dunlin that migrated longer distances along less direct routes, but the opposite …
-
Demography of a declining Dunlin (<i>Calidris alpina arcticola</i>): influences on adult survival and mate fidelity of an Arctic-breeding migratory shorebird
… declining, including populations of Dunlin (<i>Calidris alpina arcticola</i>), an Arctic-breeding shorebird. Prior adult survival estimates (0.41– 0.60) appeared insufficient to maintain a stationary population, however, it was unclear if estimates were reflective of bias or a real survival …
-
Effects of an Increasing Lesser Snow Goose Population on Shorebird Foraging Ecology at La Perouse Bay, Manitoba
… Sufficient data were collected on dunlin (Calidris a/pina), least sandpiper (C minutilla), pectoral sandpiper (C melantos), semipalmated plover (Charadrius semipalmatus). semipalmated sandpiper (Calidris pusilla), short-billed dowitcher (Limnodromus griseus) and white-rumped sandpiper …
-
A System-Level Analysis of Migratory Shorebird Habitat Use, Diet, and the Influence of Climate-Driven Ecosystem Change in the Virginia Barrier Islands
… including federally threatened red knots (Calidris canutus rufa) and other state and regional species of conservation concern such as dunlin (Calidris alpina) and semipalmated sandpipers (Calidris pusilla). The goals of my thesis were: 1) to advance understanding of the foraging ecology of …
-
Shorebird migration in western Kentucky: phenology, habitat use, and possible effects of prey availability
… N = 4134), Pectoral Sandpipers (<em>Calidris melanotos</em>; N= 2912), Least Sandpipers (<em>Calidris minutilla</em>; N = 1138), Greater Yellowlegs (<em>Tringa melanoleuca</em>; N = 942), and Lesser Yellowlegs (<em>Tringa flavipes</em>; N = 911) being most abundant. I recorded more …
-
Impacts of Human Disturbance on the Behavior of Sanderlings on the Georgia Coast
… of humans altered the behavior of Sanderlings (Calidris alba), (2) to quantify the impacts of staged human encounters on Sanderlings, and (3) to assess whether Sanderlings on high-disturbance beaches habituate to the presence of humans. The study was conducted on two Georgia barrier islands with …
-
Comparing biodiversity of birds in different habitats in South Iceland
… Af þessum átta tegundum voru fimm (lóuþræll (Calidris alpina), hrossagaukur (Gallinago gallinago), spói (Numenius phaeopus), jaðrakan (Limosa limosa) og þúfutittlingur) með hæstan þéttleika í votlendi. Tjaldur (Haematopus ostralegus) og stelkur (Tringa totanus) voru með hæstan þéttleika í …
-
Estimating occupancy and abundance of shorebirds through aerial surveys in the Illinois river valley
… and larger) or ""small"" (Pectoral sandpiper (Calidris melanotos) and smaller) size classes, and recorded wetland habitat characteristics at a total of 96 sites in the IRV weekly. Dynamic occupancy analyses showed the prevalence of wet mud drove site occupancy, and higher occupancy rates were …
-
DISCRIMINATING OVERWINTERING ORIGIN AND MIGRATORY CONNECTIVITY IN A LONG-DISTANCE MIGRATORY SHOREBIRD STAGING IN THE CANADIAN PRAIRIES
… a northward migratory population of Sanderling (Calidris alba) in the Western Hemisphere. I examined geographic variation in feather isotope values from a northern population of Sanderling staging at Chaplin Lake, Saskatchewan over seven years and compared these to feathers collected at three …
-
Effects of human disturbance on the behavior and energetics of nonbreeding sanderlings
… and free-ranging nonbreeding sanderlings (Calidris alba). I exposed 24 captive sanderlings to a 5-min disturbance event during each of 10 diurnal hours over two 4-d trials. The metabolizable energy of food ingested was determined for each bird daily. Total body electrical conductivity and …
-
Aspects of the behaviour and ecology of White-fronted Sandplovers and Sanderlings on a South African sandy beach
… Charadrius marginatus and the Sanderling Calidris alba, which are identified in Chapter l as being dominant components of the southwestern Cape sandy shore avian population. Chapter 3 reports on the spatial and temporal use of the intertidal habitat by foraging White-fronted Sandplovers …
-
Design and Model-based Approaches for Estimating Abundance of American Horseshoe Crab
… food source for the threatened red knot, Calidris canutus rufa. Previously, estimates of relative and total abundance of HSC in the Delaware Bay area were based on a design-based approach using a stratified random sampling design. In Chapter 1 of this work, I developed hurdle models for …
-
Integrated assessment for decision and management support within the Bahía de Cádiz Nature Park (Spain)
… alexandrinus) y del correlimos menudo (Calidris minuta). El declive de las poblaciones de estas especies de limícolas se asocia a la degradación de zonas supralitorales, con pérdida de comederos y dormideros. Los resultados muestran además una mayor sensibilidad de estas dos especies a …