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 56 for “"vital rates"”.
-
Spring Dispersal and Breeding Ecology of Northern Bobwhite in Southwest Ohio
… breeding ecology and behavior, and breeding vital rates of Midwestern bobwhites near the northern limit of their range. It is unclear if recovery of Midwestern bobwhite populations is limited by spring dispersal capabilities and/or breeding vital rates.</p><p>Radio-telemetry was used to …
-
Genetic variability, demography, and habitat selection in a reintroduced elk (Cervus elaphus) population
… that influence genetic variability, demographic vital rates, and resource selection is important for conservation and management of wildlife populations. I examined factors influencing microsatellite variability, demographic vital rates, and habitat use for a reintroduced elk (Cervus elaphus) …
-
MONITORING SURVIVAL OF YOUNG IN UNGULATES: A CASE STUDY WITH ROCKY MOUNTAIN ELK
… approach to determine the relative importance of vital rates on age ratios. I also evaluated the ability of age ratios to reflect changes in vital rates and population growth (ë). Calf survival had the greatest impact on calf:cow ratios and explained most of the variation in calf:cow ratios (r2= …
-
MONITORING SURVIVAL OF YOUNG IN UNGULATES: A CASE STUDY WITH ROCKY MOUNTAIN ELK
… approach to determine the relative importance of vital rates on age ratios. I also evaluated the ability of age ratios to reflect changes in vital rates and population growth (ë). Calf survival had the greatest impact on calf:cow ratios and explained most of the variation in calf:cow ratios (r2= …
-
RESISTANCE AND RESILIENCE OF STREAM SALAMANDER POPULATIONS TO DISTURBANCE
… and drought would strongly influence vital rates (e.g., occupancy, abundance, survival, etc.) of salamander populations.
-
Ornate box turtle (Terrapene ornata) demography in northern Illinois
… threatened species. Without data on population vital rates, decisions are often speculative and based on general information about a species rather than at the population level. The Ornate Box Turtle (Terrapene ornata) is a threatened species in Illinois and lacks essential demographic data. …
-
Assessing the Influence of Prescribed Fire on Faunal Communities in a Pyric Landscape
… to spatial variation in animal distributions and vital rates is fundamental to population ecology and wildlife management. The Longleaf pine (Pinus palustris; hereafter, LLP) ecosystem is an archetypal fire-mediated ecosystem, which has seen drastic reductions in land area due to fire suppression. …
-
MALLARD NESTING ECOLOGY IN THE GREAT LAKES
Understanding how habitat features influence vital rates that drive population growth is fundamental for delivery of effective conservation programs. Past decisions in management of Great Lakes mallard (Anas platyrynchos) populations were based largely on paradigms established in the mid-continent …
-
BIOLOGICAL CONTROL: EFFECTS OF TYRIA JACOBAEAE ON THE POPULATION DYNAMICS OF SENECIO JACOBAEA IN NORTHWEST MONTANA
… moth damage and its effects on important plant vital rates were tested with and without specialist herbivores. The presence of moth larvae corresponded to a reduction in population growth rates to less than one, compared to herbivore-free controls, indicating the potential for successful …
-
MALLARD NESTING ECOLOGY IN THE GREAT LAKES
Understanding how habitat features influence vital rates that drive population growth is fundamental for delivery of effective conservation programs. Past decisions in management of Great Lakes mallard (Anas platyrynchos) populations were based largely on paradigms established in the mid-continent …
-
BIOLOGICAL CONTROL: EFFECTS OF TYRIA JACOBAEAE ON THE POPULATION DYNAMICS OF SENECIO JACOBAEA IN NORTHWEST MONTANA
… moth damage and its effects on important plant vital rates were tested with and without specialist herbivores. The presence of moth larvae corresponded to a reduction in population growth rates to less than one, compared to herbivore-free controls, indicating the potential for successful …
-
Population Dynamics and Spatial Ecology of White-tailed Deer in the Central Appalachian Mountains of Virginia
… on herd demographics. Some key population vital rates allowing better understanding of these changes in white-tailed deer herds are survival, cause-specific mortality, home-range variation, both broad and fine-scale resource selection, and ultimately population growth trends in response to …
-
Population dynamics of the Columbia spotted frog (Rana luteiventris): inference from long-term demography
… effects of climate change on individual vital rates and subsequent population dynamics of amphibians. I investigated the population dynamics of a high elevation population of the Columbia spotted frog (Rana luteiventris) in relation to climate variation over a ten-year period.</p> <p>I …
-
Population dynamics of the Columbia spotted frog (Rana luteiventris): inference from long-term demography
… effects of climate change on individual vital rates and subsequent population dynamics of amphibians. I investigated the population dynamics of a high elevation population of the Columbia spotted frog (Rana luteiventris) in relation to climate variation over a ten-year period.</p> <p>I …
-
Optimal bioeconomic management of changing marine resources
… and when rising temperatures cause changes in vital rates. I explore this last case in both deterministic and stochastic environments, and also allow the harvester to learn about unknown parameters of the stock recruitment model while harvesting. I also develop an unambiguous definition of and …
-
Optimal bioeconomic management of changing marine resources
… and when rising temperatures cause changes in vital rates. I explore this last case in both deterministic and stochastic environments, and also allow the harvester to learn about unknown parameters of the stock recruitment model while harvesting. I also develop an unambiguous definition of and …
-
The Role of Climate Variability in Duck Population Ecology
… factors in population dynamics, variation in vital rates, and timing of breeding. Where possible I used interspecific comparisons to evaluate whether responses were mediated by life-history traits. First, I examined annual variation in the timing, length, and productivity of growing seasons on …
-
The population dynamics of shortnose gar in the Illinois River to inform management of an emerging recreational fishery
… the relative abundance, stock structure and vital rates of Shortnose Gar (Lepisosteus platostomus) in the lower Illinois River. The findings indicate that Shortnose Gar exhibit slow growth rates, large body size, variable recruitment and long life spans characteristic of a periodic life …
-
Integrating Above and Belowground Components of Biodiversity across Spatial Scales: The Role of Host Plants in the Distribution of Arbuscular Mycorrhizal Fungi
… soil physical properties and AM fungal vital rates.
-
Patterns in Gray Wolf Pup Survival and Recruitment in Northern Minnesota
<p>Knowledge of how and why the vital rates of wildlife populations change through and over time is crucial for understanding wildlife population dynamics. Because estimating gray wolf pup survival is challenging, our understanding of pup survival and the factors influencing survival and …
Page 1 of 3