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 42 for “"winter survival"”.
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Cercospora sojina: over-winter survival and fungicide resistance
… including Illinois. To better understand the survival rate of C. sojina in Illinois, a field study was conducted at three locations: Monmouth (west-central Illinois), Urbana (east-central Illinois), and Dixon Springs (southeastern Illinois). At each location, soybean leaves affected by FLS …
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Winter survival of the bobwhite quail on its intermediate range
no abstract provided by author
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A study of the winter survival of bobwhite quail under natural conditions
no abstract provided by author
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Winter survival of bermudagrasses (Cynodon sp.) as influenced by deacclimation, low temperatures, and dormancy periods
… where semitropical grasses are adapted, is winter survival. This research was primarily conducted to investigate the effects of deacclimation of dormancy, duration of dormancy, and freezing temperatures on survival of bermudagrasses. 'Tifgreen' bermudagrass taken from the field in February, …
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Cold Tolerance, Diapause and Winter Survival of the Brown Marmorated Stink Bug (<i>Halyomorpha halys</i>)
… regarding the factors influencing this species’ winter survival within invaded northern regions. Cold tolerance has been previously evaluated in the eastern United States, bot nut within western populations. Winter diapause. Along with any potential links between diapause and cold tolerance …
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Winter survival of bermudagrass (Cynodon sp.) as influenced by traffic, mineral nutrition, plastic covers, cultural treatments, overseeding and freezing in late-winter dormancy
… turf at the northern limit of its adaptation is winter survival. Bermudagrass used for athletic complexes is exposed to the additional problem of uncontrolled or excessive traffic. This research was conducted to determine the effects of: 1) traffic and mineral nutrition; 2) clear plastic covers …
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Role of Parental Care and Ontogenetic Diets Shifts in the Recruitment Variation of an Aquatic Predator
… nest success, ontogeny of piscivory, and winter survival are predicted to determine year class strength of largemouth bass Micropterus salmoides . In Chapter Two, family-specific DNA fingerprints were used to quantify parental effects on brood-specific contribution to fall recruitment in …
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Flood Survival Strategies of Overwintering Snakes
This thesis investigates snake flood survival during hibernation and how anthropogenic habitat alteration and climate variability may affect habitat quality and overwintering survival. Chapter one reviews the current understanding of ecophysiology of hibernation in snakes. In chapter two, I …
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EPIDEMIOLOGY AND POPULATION GENETICS OF THE GRAPE POWDERY MILDEW CAUSAL FUNGUS, ERYSIPHE NECATOR, AND ITS RELATION TO COMMERCIAL DISEASE MANAGEMENT
… study takes place, E. necator exclusively overwinters in its sexual stage as chasmothecia. Having a diverse genetic pool and mixed mode of reproduction contributes to a high evolutionary potential to overcome disease management methods; powdery mildews have been shown numerous times to overcome …
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Approaches to wildflower meadow establishment
… by Lyons for fall establishment. High levels of winter survival, strong competitive ability against weeds, and good spring growth by the wildflower species indicate that the VTTM technique is a promising method for establishing wildflower meadows. Further research is needed to determine the long …
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Adapting to salinity: The effects of salinity on population structure and offspring survival in Lucania parva
… or environmental) that influence offspring survival as a function of salinity. In chapter 3, I describe the results of an experiment where I performed within population crosses for a freshwater and a saltwater population from the Wakulla River drainage. In the experiment, I considered the …
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Over-Winter Mortality Of Gizzard Shad (Dorosoma Cepedianum) In Oneida Lake, New York
Winter limits resource availability in temperate lakes, exerting a strong influence on the northern distributions of many temperate species by altering the recruitment of age-0 fishes. Recently, there has been growing concern that projected climate change could alter over-winter survival of many …
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Determinants of variation in productivity, adult survival and recruitment in a declining migrant bird : the Whinchat (Saxicola rubetra)
… may have a common source, such as low over-winter survival, which affects the whole UK population. To better understand the declines, this study investigated the key demographic parameters driving the breeding Whinchat population change on Salisbury Plain, UK, which is an area of …
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Barley Yellow Dwarf of Winter Wheat: Effects on Germplasm, and Inheritance, Combining Ability, and Reciprocal Effect for Tolerance to the Barley Yellow Dwarf Virus
… of the barley yellow dwarf virus (BYDV) on winter wheat germplasm showed fall infection to be more devastating than spring infection, reducing grain yield an average of 61% vs. 38% for spring infection. BYDV also decreased winter survival, plant height, number of heads, and kernel weight. …
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Site fidelity and territorial behaviour of some migratory passerine species overwintering in the Mediterranean area
… were studied at five sites in Spain during winters 1981-84 and 1989-1994. Some birds exhibited winter site fidelity. Recoveries occurred mostly within the same winter of ringing. However, some birds were recorded after 5, 3 and 2 yrs, in the three species respectively, in the same area. In …
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Survival strategies of eelgrass in reduced light
… between light availability, growth and survival (Chapter III). The study concluded that at temperatures between 18°C and 23°C, eelgrass plants can thrive at light levels of 58% surface irradiance (SI) and above, and are light-limited at 34% SI and below, but that the minimum …
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Hatching synchrony and survival in early life in the painted turtle, Chrysemys picta
… neonates remain in the nest throughout the winter. I also assessed the mechanism by which synchrony occurs and explored potential trade-offs between synchronous hatching and performance. Although hatching synchrony did not occur, underdeveloped embryos attempted to catch-up to more advanced …
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An Evaluation of Corn and Sorghum as a Winter Food Source for Ring-necked Pheasants
In many localities winter food plots of corn am/or sorghum are used to enhance the over-winter survival of ring-necked pheasants. Yet, few studies have been conducted evaluating the benefits provided by winter diets of com and/or sorghum to pheasants. 1be gut morphology and body condition of 110 …
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Winter habitat use by mule deer in Idaho and Montana
Winter survival for species such as Rocky Mountain mule deer (Odocoileus hemionus hemionus) depends on an energy conservation strategy where they use habitats at lower elevations and on south facing slopes with adequate thermal or canopy cover. However, not all mule deer habitats are equivalent in …
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