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 52 for “"shorebird"”.
-
Shorebird migration in western Kentucky: phenology, habitat use, and possible effects of prey availability
… the 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 …
-
Nutritional Value and Management of Waterfowl and Shorebird Foods in Atlantic Coastal Moist-Soil Impoundments
… to migratory and wintering waterfowl and shorebirds, contains numerous moist-soil impoundments that are managed for waterbirds. Positive relationships between nonbreeding body condition and subsequent survival and reproduction have been documented for waterfowl, yet few evaluations of …
-
Survey and home range analyses of wintering shorebirds using the Lanark Reef Shorebird Complex, Franklin Co., Florida
… document spatial variation in use by wintering shorebirds at a series of sites believed to form the Lanark Reef Shorebird Complex in Franklin County. Fifty and 95% convex polygon home range estimate for Willets (Catoptrophorus semipalmatus) averaged 0.52 km 2 and 14.85 km2, respectively. Fifty …
-
Effects of an Increasing Lesser Snow Goose Population on Shorebird Foraging Ecology at La Perouse Bay, Manitoba
… 1997 to determine the effects of degradation on shorebird foraging ecology at La Perouse Bay. Sampling was conducted from June 1 - August 10, 1997 and June 4 - August 8, 1998. For temporal analysis each annual collection period was partitioned into four seasons - spring, early-summer, late-summer …
-
DISCRIMINATING OVERWINTERING ORIGIN AND MIGRATORY CONNECTIVITY IN A LONG-DISTANCE MIGRATORY SHOREBIRD STAGING IN THE CANADIAN PRAIRIES
… are experiencing widespread global declines. Shorebirds appear to be experiencing some of the most dramatic declining population trends, with the long-distance, Arctic-breeding migrants apparently losing ground the fastest. Challenges arise in monitoring these populations as they undertake …
-
Migrant Shorebird, Breeding Waterfowl, and Invertebrate Reponse to Conditions in Temporary Wetlands in Easter Central South Dakota During Spring
… in Beadle County, South Dakota were surveyed for shorebird and waterfowl use. Over 5,000 shorebirds used these wetlands in both 1997 and 1998. Of the 26 shorebirds species observed, the most abundant were white-rumped, pectoral, and Baird's sandpipers. During both years, the peak of shorebird …
-
Intertidal mudflats and the conservation of migratory shorebirds
Migratory shorebirds rely on intertidal habitats that are increasingly threatened by habitat loss, human disturbance, and climate change. Investigating habitat availability, its influence on shorebird populations and how to prioritise conservation efforts is critical to inform conservation …
-
Human disturbance impact on shorebirds at Muizenberg Beach, South Africa, during and prior to the COVID-19 lockdown
… knowledge gaps prevail, including its effects on shorebirds. The 2020 global COVID-19 pandemic resulted in a period of abnormally limited human mobility that has been coined the ‘anthropause'. In South Africa, a national lockdown commenced on 27 March 2020 and consisted of five levels to combat …
-
Building a Comprehensive Understanding of Disturbance Mitigation in Migrating Shorebirds
Human disturbance is a serious threat facing shorebirds, and reducing disturbance presents a significant conservation challenge. It requires an understanding of the complex factors that influence both shorebird biology and human behavior related to shorebirds and coastal environments. This thesis …
-
Demography of a declining Dunlin (<i>Calidris alpina arcticola</i>): influences on adult survival and mate fidelity of an Arctic-breeding migratory shorebird
… experienced throughout the year. Migratory shorebird populations are rapidly 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, …
-
A System-Level Analysis of Migratory Shorebird Habitat Use, Diet, and the Influence of Climate-Driven Ecosystem Change in the Virginia Barrier Islands
Migratory shorebirds rely on high-quality coastal staging habitats to refuel during migration, but these sites are threatened by climate change. The Virginia barrier island system supports over 100,000 shorebirds annually, including federally threatened red knots (Calidris canutus rufa) and other …
-
Comparative foraging ecology of two broad-ranging migrants, grey plover Pluvialis Squatarola and whimbrel Numenius Phaeopus (Aves: Charadrii), in tropical and temperate latitudes of the Western Indian Ocean
… of the study was to provide comparative data on shorebird foraging ecology in the southern hemisphere, in order to contribute to the general understanding of shorebird foraging behaviour and migration patterns.
-
Assessing the Effects of Sea-Level Rise on Piping Plover (Charadrius Melodus) Nesting Habitat, and the Ecology of a Key Mammalian Shorebird Predator, on Assateague Island
… (Charadrius melodus) is a federally-listed shorebird that nests on barrier islands along the U.S. Atlantic Coast and is highly vulnerable to habitat change and predation. We have addressed these two threats by 1) developing and implementing a linked model system that predicts future change …
-
Ecosystem impacts of intertidal invertebrate harvesting: from benthic habitats to bird predators.
… This is particularly so for overwintering shorebirds that rely heavily on invertebrate prey to maintain body condition throughout the winter and to fuel migration towards breeding grounds. Harvesting activities in these areas therefore require careful management to achieve sustainability …
-
Estimating occupancy and abundance of shorebirds through aerial surveys in the Illinois river valley
"Shorebirds are one of multiple guilds of wetland birds that have been experiencing population declines over the last 50 years. These species migrate long distances between northern breeding grounds and southern wintering grounds, and many need to stop and refuel along the way. The Illinois River …
-
The structure of macrofaunal assemblages inhabiting an intertidal sandflat in Tomales Bay, California
… experiment aimed at assessing the effects of shorebird, crab and fish predation on certain infaunal and epifaunal invertebrates.
-
Exploring the interplay of ecological and social factors in human-induced disturbance of the African Oystercatcher (Haematopus moquini): insights and management recommendations for conservation
… by dog walkers, and they are also home to shorebird populations that are facing mounting pressure due to human disturbance. African Oystercatchers (Haematopus moquini) are vulnerable to human disturbance because they are a ground-nesting species that breeds during the height of the South …
-
Factors affecting Wilson's Plover (Charadrius wilsonia) demography and habitat use at Onslow Beach, Marine Corps Base Camp Lejeune, North Carolina
… states, where it breeds and winters. The U.S. Shorebird Conservation Plan listed this species as a Species of High Concern (Prioritization Category 4), and the U.S. Fish and Wildlife Service has designated it as a Bird of Conservation Concern (BCC). Despite its conservation status, Wilson’s …
-
Using Light-Level Geolocation to Investigate the Carry-Over Effects of Long-Distance Migration on the Reproductive Success of Dunlin (Calidris Alpina Hudsonia)
… reproductive success in a subarctic-nesting 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 …
Page 1 of 3