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 19 of 19 for “"Sandhill"”.
-
Bluegill Reproductive Characteristics in Nebraska Sandhill Lakes
… biology was evaluated in two Nebraska Sandhill lakes, 323-ha Pelican Lake in Cherry County and 38-ha Cozad Lake in Brown County, during 1998. Catch per unit effort of stock-length bluegills in trap nets did not differ between lakes (P=0.19). Proportional stock density was significantly …
-
Reproductive Ecology of Greater Sandhill Cranes in Nevada
… of nests and chicks (i.e., colts) of greater sandhill cranes (Grus canadensis tabida) in northeastern Nevada, USA, during 2009-2010. We monitored 161 nests and 101 colts and used a maximum-likelihood based approach to test multiple competing hypotheses and estimate daily survival rates, nest …
-
Ecology of Fish Communities in Nebraska Sandhill Lakes
… on the fish communities in Nebraska Sandhill lakes. I selected 30 lakes and measured fish community characteristics, invertebrate populations, and habitat in all lakes. I also evaluated angler impact by using creel data and studied populations in three lakes that were closed to …
-
Predator-prey Interactions of Fishes in Two Nebraska Sandhill Lakes
… completed for fish communities in the Nebraska Sandhill lakes. Additionally, little information exists on the seasonal food habits of bluegill Lepomis macrochirus and yellow perch Perca flavescens in these shallow natural lakes. Most of the previous research on the Nebraska Sandhill lakes has …
-
Migratory Ecology and Movement Patterns of Mid-Continent and Eastern Sandhill Cranes
Sandhill cranes (Antigone canadensis) are long-lived birds with relatively low recruitment rates, making accurate knowledge of abundance and distribution critical for well-informed harvest management. Minnesota is one of few states containing portions of 2 different breeding populations of greater …
-
Vigilance behavior and land use by sandhill cranes (<i>grus canadensis</i>)
<p>I investigated how vigilance in sandhill crane time budgets changed with behavioral, climatic, and anthropogenic factors. I measured two different postures that could be interpreted as vigilance. Cranes significantly altered the time spent in the alert investigative posture with differences in …
-
Autumn Foraging and Staging Ecology of Eastern Population Sandhill Cranes (Antigone canadensis tabida)
… behaviour). The Eastern Population of Greater Sandhill Cranes (Antigone canadensis tabida; EP herein) likely began to recolonize Ontario and its historic range starting in the early 1900s and now relies on agricultural grain during migration. Accordingly, ecologists possess little knowledge of …
-
Evaluation of the Genetic Management of the Endangered Mississippi Sandhill Crane (Grus canadensis pulla)
… status of the critically endangered Mississippi sandhill crane (Grus canadensis pulla) was analyzed using 2009 studbook data from the U.S. Fish and Wildlife Service managed captive breeding and release program. Microsatellite DNA data provided information on shared founder genotypes, allowing for …
-
Habitat Characteristics Affecting Site Occupation in Wintering Henslow’s Sparrows at Mississippi Sandhill Crane National Wildlife Refuge
… Henslow’s sparrow site occupancy at Mississippi Sandhill Crane National Wildlife Refuge. In this study, Henslow’s sparrow more often occupied sites burned one growing season earlier than sites burned two growing seasons earlier, and did not occupy sites burned three or more growing seasons …
-
Below-Ground Food Production in Habitats Utilized by the Rocky Mountain Populations of Greater Sandhill Cranes
… staging). Below-ground foods were sampled in sandhill crane foraging habitats at three United States Fish and Wildlife Service (USFWS) National Wildlife Refuges (NWR) in the Intermountain West where these life cycle events occur. Grays Lake NWR in Idaho is a traditional RMP crane breeding …
-
Sources of Nest Failure in Mississippi Sandhill Cranes, Grus canadensis pulla: Nest Survival Modeling and Predator Occupancy
… of the critically endangered Mississippi Sandhill Crane (Grus canadensis 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, …
-
Sandhill crane colt survival and fledging success in northeastern Illinois: the role of age and significance of land cover in an urbanized landscape
The breeding and fledging success of Sandhill Cranes (Grus canadensis spp.) in urban landscapes has been largely unexplored by previous research. I evaluated survival and habitat use of young Greater Sandhill Cranes (G. c. tabida) in northeastern Illinois, where the Eastern Population of cranes and …
-
Habitat use and activity patterns of Gopher Tortoises (Gopherus polyphemus) inhabiting military test ranges and forested sandhills at Eglin Air Force Base, Florida
… situation in which large tracts of longleaf pine sandhill (suitable Gopher Tortoise habitat) are available, but tortoise sub-populations on base are small, and many tortoises currently inhabit treeless military testing and training ranges (test ranges) rather than typical forested sandhill. My …
-
The Role of Gopher Tortoise Burrows (Gopherus polyphemus) in Shaping Herpetofaunal Diversity in the Sandhills of Southeast Georgia
… burrows and random points not near burrows on a sandhill in Southeast Georgia. I also compared habitat structure between burrows and random arrays. Trapping took place from March 1, 2007 to August 30, 2007. Species richness for all months combined was significantly higher at Gopher Tortoise …
-
LONG-TERM OVERSTORY VEGETATION RESPONSES TO PRESCRIBED FIRE MANAGEMENT FOR LONGLEAF PINE AT BIG THICKET NATIONAL PRESERVE
… Across the size classes and treatments, the sandhill and wetland savanna vegetation types remained less effected by fire treatments and only the upland pine responded to changes in the overstory. Although fire management had an effect on vegetation types, upon reviewing prescribed histories, …
-
Terrestrial Movements and Habitat Use of Gopher Frogs (Rana capito) at Fort Benning, Georgia
… movements and habitat use in a longleaf pine- sandhill area on the Fort Benning Military Reservation, Georgia. The telemetry research was conducted in response to the need for biological data concerning gopher frog terrestrial habits. Ultimately the data could aid biologists and land managers …
-
Anthraquinone Corn Seed Treatment (Avitec™) As A Feeding Repellent for Ring-Necked Pheasants (Phasianus colchicus) on Newly Planted Corn in Eastern South Dakota
… and Michigan as a seed corn treatment where sandhill cranes (Grus canadensis) have been damaging corn fields by eating the corn seeds shortly after planting. In 2006, a 2-year study was initiated to determine if AvitecTM is an effective pheasant repellent on germinating corn seeds. Wildlife …
-
Effects of Fire on the Ectoparasites of Small Mammals in Longleaf Pine (Pinus Palustris) Habitats
I tested the hypothesis that fire significantly decreases prevalence and abundance of ectoparasites and therefore increases the condition of small mammals in longleaf pine habitats. I trapped two areas with paired burned and unburned sites in east central Georgia during 2002 2003. I collected 190 …