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 28 for “"population monitoring"”.
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Improving the Use of Migration Counts for Wildlife Population Monitoring
Counts of migrating animals are used to monitor populations, particularly for species that are not well sampled by breeding and wintering surveys. The use of migration counts for population monitoring relies on the assumptions that new individuals are detected each day, and that probability of …
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Integrating Research into Conservation: Using Satellite Telemetry and Population Monitoring to Inform the Management of Hawksbill Turtles in Brazil
… biodiversity. Utilizing satellite telemetry and population monitoring, key demographic parameters and spatial ecology of nesting hawksbill turtles were investigated. The utilization distribution by tracked turtles overlapped with Marine Protected Areas (MPAs) and the potential threats, offered …
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Distribution and Population Characterization of Clinch Dace (Chrosomus sp. cf. saylori) in the Upper Clinch River System, Virginia
… A management plan, which should include both population monitoring and habitat restoration, is still lacking for the species. Population monitoring must balance high detection probability with low risk of injury to captured individuals. I sampled 98 sites in 2014 and 2015 within the putative …
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Refining monitoring practices and applying novel enhancement strategies to populations of threatened diadromous species.
… fisheries, with this driving extensive population monitoring and management. However, overexploitation and other anthropogenic impacts mean both species are threatened and/or declining throughout their range. Population monitoring for salmonids generally consists of electrofishing …
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Reproduction of coastal birds breeding in the Wadden Sea: variation, influencing factors and monitoring
… the contribution of current breeding success to population trends of single species. The studies were conducted during the mid 1990s and at the beginning of the 2000s investigating six frequent breeding bird species at 17 breeding sites throughout the German part of the Wadden Sea area. In …
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Towards the ecology and conservation of sand lizard (Lacerta agilis) populations in Southern England
… of a reliable and effective methodology for population monitoring; this threatens to compromise conservation effort. The behaviour of sand lizards varies seasonally, with sex and with environmental conditions, none of which are fully understood. This aim of this thesis is to further our …
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Modeling Effects of Mortality on Indiana Bat (Myotis Sodalis) Populations at Wind Energy Facilities
… of this additional mortality on Indiana bat populations. This thesis describes and evaluates the potential effects of wind turbine related mortality on Indiana bat populations over time. Leslie matrix models were used to estimate the growth or decline of a population over time under different …
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Monitoring Bacteria Cultures Using Near Infrared (nir) Binary Spectronephelometry (bsn), Raman Spectra and Principal Component Analysis (pca)
… the same or better sensitivity and precision for population monitoring as optical density at 600nm (OD600), while simultaneously measuring metabolic processes. The BSN algorithm uses laser induced emission to probe mildly turbid media i.e., propagation of light occurs in the single scattering …
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Genetic and ecological investigations of European populations of the pool frog, Rana lessonae (Camerano, 1882) with allied, osteological and species identification methods
… indices suggested a complex origin for the Swiss population which also supported more northerly refugia than traditionally assumed. The RAPD analyses concur with a parallel microsatellite investigation supporting native status for Norfolk pool frogs, and have helped to prompt a programme for …
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Life history implications of the mother's choice for a larval habitat. Niche choice and niche conformance in the fire salamander, Salamandra salamandra
… crisis, and many species experience drastic population declines or local extinction events. Amphibians are by far the most threatened taxon. They are highly affected by habitat loss, climate change, pollution and emerging infectious diseases such as chytridiomycosis caused by the chytrid …
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Behavioural ecology and conservation of the Anosy mouse lemur (Microcebus tanost) in the littoral forests of southeastern Madagascar
… differences between isolated con-specific populations. Microcebus tanosi home ranges overlap substantially both inter and intra-sexually and are consistent with a dispersed social neighbourhood and promiscuous mating system, with males ranging over significantly larger areas than females. …
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Four-Toed Salamander (hemidactylium Scutatum) Nest Site Characteristics In Natural And Constructed Wetlands In Eastern Kentucky
… wetlands. In the absence of such data, long-term population monitoring with nest surveys is recommended to determine if this species is impacted by greater predation in constructed wetlands. </p>
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Conservation genetics of Australian quolls
… anthropogenic disturbance has led to severe population declines. In response, captive breeding and translocation programs were implemented in an attempt to mitigate extinction risks. This thesis provides genetic (microsatellite) data to guide management of the four Australian quoll species. …
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Beautiful but lacking diversity : population genetics of Pacific Dogwood (Cornus nuttallii Audobon ex Torr. & A. Gray)
… past, conifers have been the primary focus of population and conservation genetic studies in Pacific Northwest (PNW) trees. These studies have provided tremendous insight as to how genetic diversity varies across species ranges for these wind-pollinated and mostly wind-dispersed species. With …
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Movements of adult western toads, Bufo boreas, in a managed forest landscape and the incidence of a disease in southwestern British Columbia
… British Columbia, I tested a breeding population of western toads in a protected area. Results showed a 28% infection rate, although no toads showed any visual signs of the disease. These results provide the first evidence of the chytrid fungus in western toads in British Columbia and …
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Long-term impacts of water quality and climate variability on Illinois River waterway fish assemblages
… Natural History Survey began the Long-Term Fish Population Monitoring Program to sample fish assemblages throughout the Illinois River Waterway (IRW) on a yearly basis. During the 1960s, researchers observed that much of the upper river was depauperate. Fishes consisted almost entirely of …
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The application of spatial capture-recapture models to investigate leopard ecology and conservation in South Africa
Population monitoring is essential to wildlife conservation and management. Rare and elusive species are difficult to observe, and hence monitor, in wild populations. Leopards (Panthera pardus) are an iconic and threatened species whose conservation is hampered by a lack of robust population data, …
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Recursos alimentares de primatas da Mata Atlântica e um olhar sobre os maiores primatas deste bioma: mudanças climáticas, principais recursos de plantas e habitat
… restoration, connectivity improvement, and population monitoring/management.
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An Evaluation of Population Restoration and Monitoring Techniques for Freshwater Mussels in the Upper Clinch River, Virginia, and Refinement of Culture Methods for Laboratory-Propagated Juveniles
From 2006-2011, four population reintroduction techniques were applied to three sites within a reach of the upper Clinch River in Virginia designated suitable for population restoration of the federally endangered oyster mussel (Epioblasma capsaeformis). These techniques were: 1) translocation of …
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Geographic expansion and small stream use by three species of invasive Asian carp in Illinois
… management. These three species have established populations throughout the lower Mississippi River and its tributaries, and have spread into the Upper Mississippi and its tributaries. Asian carp are very fecund and feed at lower trophic levels, potentially posing serious negative impacts for …
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