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 20 of 31 for “"Preferred Habitat"”.
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Preferred Habitat For Liquidity In International Short-term Interest Rates
… been found to exhibit behavior consistent with preferred habitat for liquidity around year-ends (Griffiths and Winters (1997, 2004)). In particular, repurchase agreement and commercial paper yields tend to increase when the security begins to mature across the end of the year, and return to …
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Distribution and abundance of nearshore aquatic habitat, Fraser River, British Columbia
Physical habitat for instream biota derives from a combination of stream system structural and hydraulic phenomena. Consequently, the quantity and quality of physical habitat is dynamic both over time and in space along the river, laterally, longitudinally and vertically. Its characterization …
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Essays in macroeconomics and corporate finance
… debt. According to one interpretation, the preferred-habitat model of Vayanos and Vila (2009) implies that Federal Reserve purchases of long-term bonds generate a reduction in long-term interest rates. In this paper, I clarify this interpretation. In particular, in a Vayanos and Vila (2009) …
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Wild turkey-road interactions on a Virginia national forest
… by woods or fields less than 80 m wide. Seasonal habitat preferences, rather than vehicular road use levels, seemed to dictate turkey use of the area surrounding Forest Service roads. Revegetated Forest Service roads were preferred habitat in the spring and summer. Turkey mortality was not closely …
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Demography and Behavior of Western Sandpipers (Calidris mauri) Breeding on the Yukon-Kuskokwim River Delta, Alaska
… excluded younger, subordinate individuals from preferred habitat. The pattern of habitat occupancy conformed to an ideal despotic distribution with aggregated nesting birds in less preferred habitat experiencing lower reproductive success. In chapter 4, I described and demonstrated the form and …
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Behavioral Study of the Red Lechwe antelope (Kobus leche leche) on Double D ranch, Bastrop County, Texas
… County, Texas between July 1997 and August 1998. Habitat use, as well as the major behaviors, feeding, resting, and mating, of lechwe introduced in Texas were compared to that described for lechwe in Africa. Open grassland is the preferred habitat type for both African and Texas lechwe, but Texas …
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Life History and Distribution of the Tennessee Dace (<em>Phoxinus tennesseensis</em>) in Northeast Tennessee.
… information on growth, reproductive biology, preferred habitat, and demography. Observations were made during the breeding season to determine spawning strategy. Breeding season lasted from April to June. Spawning occurred over the nest of <em>Semotilus atromaculatus</em> (creek chub) and …
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Ecological studies on the American kestrel (Falco sparverius) in east-central Indiana
… than females in both townships. Pasture was the preferred habitat of both male and female birds. No correlation was found between numbers of kestrels sighted and weather conditions. Kestrels occupied two of six nest boxes in the area and fledged a total of ten young. U. S. Fish and Wildlife …
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An Ecological Study of the Black-Tailed Jack-Rabbit Lepus Californicus in Missouri
… units. Pasture fields were found to be the preferred habitat over hay and crop fields on the study site. A seasonal activity pattern was discovered in which jackrabbits were active during the daylight hours from the 1st of May to the 31st of August and strictly nocturnal the remainder of the …
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Habitat use and demography of red-headed woodpeckers in west-central Illinois
… been attributed to the loss or degradation of preferred habitat, particularly because of changes in land use and management practices. Red-headed woodpeckers have been known to use a variety of habitat types, but little is known about specific habitat features associated with habitat use and …
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Biology, movement behaviour and spatial dynamics of an exploited population of smooth hound shark mustelus mustelus around a coastal marine protected area in South Africa
… of a MPA closed to fishing which includes preferred habitat for all life- IX history stages of this species. In the absence of a comprehensive stock assessment and species-specific management, well-positioned closed areas that include preferred habitat can aid the sustainability of coastal …
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An experimental test of intra- and inter-specific competition between invasive western mosquitofish (Gambusia affinis) and native plains topminnow (Fundulus Sciadicus)
… conservation. Species coexistence in invaded habitats depends on the relative strength of intra- versus inter-specific competition, where inter-specific competition from invasive species to native species is often stronger than intra-specific competition, jeopardizing their coexistence.2. In …
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Nest predation and habitat selection in the grasshopper sparrow (Ammodramus savannarum)
… our understanding of the relationship between habitat characteristics and nest loss and how predation affects nest-site selection is limited. Predators are not often identified, yet their behavior greatly influences nest loss patterns. Most studies of nest-site selection make unrealistic …
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Comparative Ecology of Juvenile Striped Bass and Juvenile Hybrid Striped Bass in Claytor Lake, Virginia
… and post-stocking predation. Both fishes preferred habitat types characterized by structure-free sand or gravel substrates, but striped bass and hybrid striped bass did not exhibit significant diet overlap during the growing season. At a total length of approximately 120 mm, the juvenile …
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Abiotic and biotic factors influencing the decline of native unionid mussels in the Clinch River, Virginia
… fluminea in the depositional areas, the preferred habitat of the juveniles. Before investigating the impacts of these factors, it was necessary to characterize the relationship of the juveniles with the sediment they inhabit. Observations of feeding behavior using videotape, dye studies …
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Behavioural Ecology of Lake Trout: From Movement Ecology to Bioenergetics
… are directed to maximizing the success of habitat exploitation, which can be quantified by examining population-level parameters such as size and age at maturity, and the population bioenergetics. Similarly, the behavioural decisions of organisms are influenced and regulated by abiotic and …
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Breeding and Nesting Behavior and Habitat of the Red-billed Pigeon (Columbia flavirostris) along the Rio Grande River in Texas
… The main cause for decline in Texas is probably habitat loss due to agricultural and urban expansion. Whil~ once common throughout the lower Rio Grande River Valley, it is now restricted to a short section of the Rio Grande River immediately below Falcon Dam where mature riparian vegetation still …
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Habitat ecology of the native subtidal snail, Lacuna vincta, in the Gulf of Maine and the impact of two introduced species
… preference experiments showed that L. vincta preferred Antithamnionella floccosa (O. F. Mull.) Whittick, Ulva lactuca L., and Laminaria saccharina. However, the growth experiments demonstrated that growth rates of snails fed on L. saccharina tended to be higher than those fed on other …
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Density, Movements, and Habitat Use of White-Tailed Deer at Sand Lake National Wildlife Refuge, South Dakota
Density, movements, and habitat use of white-tailed deer (Odocoileus virgni anus) were evaluated at Sand Lake National Wildlife Refuge (SLNWR), South Dakota. Deer detection rate was estimated (88.2%) in sample areas using infrared sensing. A flight transect method that was developed in 1993 to …
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Behavior and habitat selection of largemouth bass in response to dynamic environmental variables with a focus on dissolved oxygen
… resulting in the loss of suitable fish habitat. Additionally, high surface temperatures can also contribute to the loss of preferred habitat. Understanding how fish interact with and respond to their environment is a critical part of fisheries research and management. My research …
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