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 41 for “"camera-trapping"”.
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Use of restored grasslands by mammals in a dynamic agroecosystem: insights from camera trapping
… effects of landscape context. I integrated camera trapping with occupancy modeling for two seasons (summer and winter) to assess mammal responses on 30 restored grassland sites in a dynamic agroecosystem in Illinois from 2014 to 2015. I tested hypotheses about the effects of local habitat …
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Ocelot Density and Home Range in Belize, Central America: Camera-Trapping and Radio Telemetry
… protection for this endangered species. Remote cameras were deployed in 7 grids across the landscape to estimate the density of ocelots in 2 habitat types; the broadleaf rainforest and pine forest of western Belize. Camera trapping combined with mark-recapture statistics resulted in densities of …
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Comparing fine-scale temporal environmental DNA (eDNA) sampling to camera trapping for detecting mammalian carnivores
… semi-aquatic mammals and compared favourably to camera trap results. However, carnivores are one of the more problematic groups regarding eDNA detections. In this study, the validity of semi-aquatic and terrestrial mammalian detection via eDNA was investigated within the north-eastern region of …
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Noninvasive tracking of jaguars (Panthera onca) and co-occurring Neotropical felids in Belize, Central America by genotyping feces and remote camera trapping
… across all study sites by remote sensing camera traps, which allows for a comparison of density estimates obtained from two different noninvasive survey approaches. Furthermore, analytical methods for density estimation are advancing rapidly, making it difficult to choose the optimal …
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Determining Habitat Associations of Virginia and Carolina Northern Flying Squirrels in the Appalachian Mountains from Bioacoustic and Telemetry Surveys
… survey techniques (ultrasonic acoustics and camera trapping) to a traditional technique (live trapping) to determine which method had higher probability of detection (POD) and lower latency to detection (LTD, number of survey nights to initial detection) of northern flying squirrels in the …
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A Comparison of Wildlife Monitoring Techniques in Riparian Ecosystems of the Western United States
… mammal and avian monitoring methods: wildlife camera trapping, GPS devices, mark-recapture, fecal DNA surveying, circular plot point counts, mist-net transects and bird-banding, transect counts, and nest monitoring. The main objectives of wildlife monitoring include gaining data in species …
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Leopard population dynamics, trophy hunting and conservation in the Soutpansberg Mountains, South Africa
… novel attempt to combine capture-recapture camera trapping, GPS telemetry and dietary analysis with anthropological techniques such as participant observation and semi-structured interviews in order to investigate leopard population density and dynamics, human-leopard conflict and the …
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Estimation of population density and investigation of socio-spatial organization of ocelots (Leopardus pardalis) from comparison and integration of two noninvasive methods
… become more commonplace in carnivore research: camera trapping (Carey 1926, Karanth 1995), and noninvasive genetics (Hoss et al. 1992, Kohn and Wayne 1997). These two methods do not require capture or direct observation of study animals, greatly increasing the amount of data that can be …
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Carnivore ecology and conservation : implications for tiger conservation and management in Nepal /
… programs. I collected field data through camera trap survey in Chitwan National Park and found that tiger occurrence was influenced by fine-scale habitat factors including prey availability. I concluded that in small protected areas wide-ranging carnivores may persist at high population …
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Monitoring Squirrels from the Sky: Applications of Uncrewed Aerial Systems-Based Bioacoustic and Vegetation Monitoring Regimes for Mohave Ground Squirrel
… the goal of supplementing ongoing live and camera trapping. Chapter two captured vegetation information within MGS ranges using UAS-based multiband imagery and developed a random forest vegetation classification model for the study area, allowing for a better understanding of the vegetation …
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Estimating population density and survival of ocelots in six study sites over multiple years in Belize, Central America
… to better inform conservation. My study used camera trapping data from long-term monitoring of ocelot populations on six different protected areas in Belize over a time span ranging from 1 to 12 years, with 1,700 ocelot detections in 65,157 total trap nights. I used classical and spatially …
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The influence of habitat features and co-occurring species on puma (Puma concolor) occupancy across eight sites in Belize, Central America
… and two-species co-occurrence models to analyze camera trapping and habitat data collected at eight study sites across Belize. Puma occupancy was positively influenced by jaguar trap success, understory density, canopy cover, and human trap success, and negatively influenced by stream density. …
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Extirpation Risk of the Endangered Golden Langur (<i>Trachypithecus geei</i>) Inside and Outside Biological Corridors, Langthel Sub-district, Trongsa, Central District Bhutan
… for each group. Using a combination of remote camera trapping, sign survey method, and key informant interviews, I confirmed the presence of potential predators for golden langurs. I used qualitative risk analysis to analyze the probability and impact of six extirpation risks: 1) electrocution, …
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The ecology of venom use in the Javan Slow Loris (Nycticebus Javanicus) and its implications for conservation
… with potential predator species using camera traps and by conducting forest surveys throughout Java. Venom may be sequestered from secondary plant metabolites and noxious arthropods, as the latter were abundant at the study site. Javan slow lorises fed extensively on gum (56 %) and 95 % …
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Towards multimodal monitoring of large African carnivores
… pardus). The most used technologies are camera traps and GPS or VHF collars. Passive acoustic monitoring could act as a complementary monitoring tool because both species produce loud, recognisable vocalisations that propagate long distances. Yet, no such survey has occurred for leopards …
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Assessing conservation status of remnant mammal populations in a Neotropical cloud forest
… predicted as early as the mid-2020s. Analysis of camera trapping surveys indicated that large mammalian species detections were negatively associated with proximity to scientific research stations. Additionally smaller species were negatively associated with proximity to survey transects used for …
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Spatial capture-recapture for acoustic surveys
… sampling methods such as passive acoustics, camera trapping, and genetic sampling. In this thesis, I focus on SCR methods for passive acoustic surveys, where animals are observed by sampling their calls using audio devices like microphones. Passive acoustic surveys are suitable for wildlife …
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Community ecology of small-mammal pollinated proteas
… nectar production and spectral reflectance. Live-trapping was conducted using Sherman traps and mean facial and faecal pollen load was determined for the different species caught. Furthermore pollinators were observed through footage from motion sensor cameras placed facing the inflorescences of …
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Determining habitat and biotic factors driving puma (<i>Puma concolor</i>) space use and underlying dynamic processes (colonization and extinction) over 20 years in protected and private areas throughout Belize, Central America
… of pumas across the country of Belize. We used camera trapping data from 7 protected areas over 20 years with 2,198 camera stations covering ~5,000 km2. For both approaches, detection was mostly affected by distance to roads, enhanced vegetation index (EVI), and elevation, with variable …
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Using Minimally Invasive Sampling Methods to Evaluate Polar Bear (Ursus maritimus) Visitation in Response to Environmental and Anthropogenic Stimuli
… this project were collected via a combination of camera trap surveys, evaluation of sea ice charts, and human use observations in the western Hudson Bay region. Using mixed effects logistic regressions, generalized linear models, and negative binomial regressions, I validated camera trap efficacy …
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