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 65 for “"nest survival"”.
-
Bayesian hierarchical models for estimating nest survival
… OF MISSOURI-COLUMBIA AT AUTHOR'S REQUEST.] Nest survival rate is a critical value in avian study to evaluate the landbirds populations. The widely used likelihood-based logistic regression model was evaluated in the first part of the dissertation. In this part, we investigated the importance …
-
Avian assemblages and Red-eyed Vireo nest survival within mineland forest
… structure and composition, and 2) contrast nest survival of Red-eyed Vireos (Vireo olivaceus) breeding within mineland and reference forest.;I conducted this research in 2011 within New River Gorge National River in southern West Virginia. I surveyed avian assemblages and sampled stand …
-
Factors Affecting Songbird Richness, Abundance, and Nest Survival in Riparian Forests in a Midwestern Agricultural Landscape
… of various spatial and temporal scales on the nesting success of songbirds. I found that the forest type was the most important variable in determining nesting success of canopy nesters, while landscape-scale factors were most important for shrub-nesting birds. Canopy nesters placed nests more …
-
Using marsh bird nest survival and post-fledging habitat use and survival to inform wetland management
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-11 without embargo terms
-
Sources of Nest Failure in Mississippi Sandhill Cranes, Grus canadensis pulla: Nest Survival Modeling and Predator Occupancy
… pulla). Lack of information on sources of nest failure hinders effective management to increase recruitment. I examined sources of nest failure for 54 nests at the Mississippi Sandhill Crane National Wildlife Refuge, 2008-2009. Nest cameras identified predation as the primary source of …
-
The Effects of natural Gas Development on Density, Reproductive Success and Nest Survival of Grassland Songbirds in South-Western Saskatchewan
… grassland songbirds. I found and monitored 392 nests of 7 species of grassland songbirds, including Chestnut-collared Longspur (Calcarius ornatus), Vesper Sparrow (Pooecetes gramineus), Sprague’s Pipit (Anthus spragueii), Savannah Sparrow (Passerculus sandwichensis), Baird’s Sparrow (Ammodramus …
-
INDIRECT EFFECTS OF LOW AMPLITUDE ARVICOLINE CYCLES ON DAILY NEST SURVIVAL OF DUNLIN (CALIDRIS ALPINA HUDSONIA) IN A RAPIDLY CHANGING CLIMATE
… risk on alternative prey such as shorebird nests as they share predators. I examined the indirect 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 …
-
An Evaluation of Duck and Ring-Necked Pheasant Nest Survival and Nest Density in Relation to Patch Size and Landscape Variables in Eastern South Dakota
… patches are hypothesized to experience decreased nest survival rates for ring-necked pheasants (Phasianus colchicus) and dabbling duck species due to small size and high degrees of fragmentation. Several natural resource agencies currently conserve grasslands throughout eastern South Dakota, but …
-
EFFECTS OF SCALE AND HABITAT MANAGEMENT ON GRASSLAND BIRD RESPONSE IN CONSERVATION RESERVE PROGRAM FIELDS IN NORTHWEST ILLINOIS
… species turnover dynamics (Chapter 1) and daily nest survival (Chapter 2). Also, habitat management-related studies often suffer when not accounting for inherent variation between fields, field landscapes, and study year; thus, to disentangle specific effects of management, it is important to …
-
The Role of Urban Climate and Land Cover in Phenology, Nest Success, and Habitat Use
… temperature variation and urban land cover for nest survival, the function of thermal refuges for habitat use by breeding birds, and the relationship between urban climate and phenology. Temperatures, leaf phenology, invertebrate abundance, nest habitat, and nest fate were monitored over a …
-
Ecological Factors Associated With Songbird and Small Mammal Predation by Texas Ratsnakes
… avian ecology, predation is the primary cause of nest failure and yet few studies examine predators directly. For my dissertation, I used radio-telemetry to monitor Texas ratsnake (Elaphe obsoleta ) habitat use and behavior to examine predation risk on nests of two endangered bird species breeding …
-
Nesting and Boat Disturbance Studies of Colonial Birds in the Okavango Delta, Botswana
Colonial waterbirds nesting at the Okavango Delta have been subjected to different forms of human disturbances. Motor boat disturbance is one main example of these disturbances. The objectives of my study were to: (I) obtain baseline data on the nesting success and nest height in colonial …
-
Comparative reproductive biology of co-occurring endangered and common shrubland birds
… 2014. I used point count surveys (n = 256) and nest monitoring (n = 145) to determine arrival dates, settlement patterns, nest site selection, and, ultimately, nest survival relative to temporal and habitat factors. Additionally, I conducted reciprocal playback trials (n = 16) to test for the …
-
Reproductive ecology of the island scrub-jay (Aphelocoma insularis)
… 2008 - 2010 I investigated factors influencing nest success, quantified annual fecundity per pair, and documented breeding behavior. Nest predation was the major factor influencing nest success, accounting for 92 percent of documented nest failures. Nests that were initiated earlier in the …
-
Raptors in Temperate Grasslands: Ecology of Ferruginous Hawk, Golden Eagle, and Northern Harrier in the Northern Great Plains
… are a grassland and shrubland obligate nesting raptor and prefer lightly grazed pasture or idle areas for nesting. Their population reportedly declines in number if more than 30% of an area is cultivated and they rarely nest in areas dominated by croplands. Golden eagles (<em>Aquila …
-
Factors affecting foraging by breeding farmland birds
This thesis investigates nesting success, foraging behaviour, chick diet and growth of three ecologically contrasting species (skylark <i>Alauda arvensis</i>, yellowhammer <i>Emberiza citrinella</i> and song thrush <i>Turdus philomelos</i>) on farmland, in relation to microhabitat and the …
-
Nesting Success of Grassland Birds in Fragmented and Unfragmented Landscapes of North Central South Dakota
… main objective of this study was to assess the nesting success of grassland birds in relation to habitat patch size and the composition of the surrounding landscape. I evaluated nesting success in moderately grazed native pastures in north central South Dakota within the following categories: 1) …
-
Demography, Nest Site Selection, and Physiological and Behavioral Responses to Overflights and other Human Activities, of Wilson's Plover (Charadrius wilsonia) at Cape Lookout National Seashore, North Carolina
… decline. I studied Wilson's Plover demography, nest site selection, and physiological and behavioral responses to overflights at Cape Lookout National Seashore, North Carolina, where the National Park Service and U.S. Marine Corps recently lowered the altitude for overflights at tactical speeds. …
-
Behavioral ecology of wild turkeys
… season, sensitive to observer presence near the nest site, and as a result our understanding of their incubation behavior is limited to a handful of studies. Lacking this important behavioral information, it remains unclear how incubation behavior among turkey hens influences reproductive …
Page 1 of 4