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 “"Occupancy Modeling"”.
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Characterizing Patterns Of Round Goby (Neogobius Melanostomus) Distribution Using Morphometrics, Occupancy Modeling, And Population Genetics
… morphological differences, (2) estimated the co-occupancy of round goby and native benthic fish (i.e. darters) in the tributary system and (3) analyzed the impact on population genetics resulting from round goby invasion in streams as inferred from gene flow. The study area spanned the Lake …
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Assessment of mudpuppy (Necturus maculosus) presence along the St. Clair-Detroit River System using environmental DNA and occupancy modeling
… success. Environmental DNA (eDNA) and occupancy modeling were used to determine best detection practices for this cryptic species. Mudpuppy eDNA was detected at all known mudpuppy sites with the addition of one site. Occupancy was highest at shoreline restoration sites, while reef …
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How can occupancy modeling and occupancy sensors reduce energy usage in academic buildings: An application approach to University of San Francisco
… on energy reduction. Most are old and have fixed occupancy schedules, resulting in high energy consumption because these buildings experience significant occupancy variation throughout the day. Five academic buildings were analyzed; their building information, energy consumption data and methods …
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Analyzing anuran diversity in urban and rural wetlands using frog call citizen science data
… higher diversity than the urban wetlands. Occupancy modeling found that rural wetlands appear to contain more sensitive and rarer anurans. The TAMP data can further facilitate our understanding of land use impacts on amphibian conservation.
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Ecology, Habitat Use, and Conservation of Asiatic Black Bears in the Min Mountains of Sichuan Province, China
… feeding analysis from scats and sign, and occupancy modeling from sign surveys. I documented the home ranges of an adult female (100% MCP = 107.5km2, n=470 locations) and a sub-adult female (100%MCP = 5.9km2, n=36 locations) Asiatic black bear. I also documented two birthing occasions with …
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Integrating multiple sign types to improve occupancy estimation for inconspicuous species: a case study of American pika in the Pacific Northwest
… critical for conservation and management. Occupancy models have emerged as one of the most powerful tools to investigate regional population trends and dynamics, range shifts and habitat associations. Standard occupancy models are capable of producing unbiased estimates of occupancy and its …
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Distribution and Population Characterization of Clinch Dace (Chrosomus sp. cf. saylori) in the Upper Clinch River System, Virginia
… sites with multiple gears and replication in an occupancy modeling framework. Clinch Dace occupied low-gradient headwater streams with relatively low conductivity in forested watersheds. My surveys uncovered two new tributaries occupied by Clinch Dace, and I was unable to find Clinch Dace in two …
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Variation In Bat Activity Across Upland Embedded Wetlands In The Cumberland Ranger District Of The Daniel Boone National Forest
… on identifying differences in bat activity and occupancy across natural and constructed UEWs. Acoustic detectors were deployed at 9 natural and 31 constructed UEWs across the Cumberland Ranger District of the DBNF. Each UEW was surveyed across 3 intervals from May – August 2022, and each …
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Use of restored grasslands by mammals in a dynamic agroecosystem: insights from camera trapping
… 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 conditions and …
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Applying ecological models to positive interactions among lotic fishes: implications for population and community regulation at multiple spatial scales
… choices, respectively; and (3) using two-species occupancy modeling to determine the relative influence of biotic interactions and habitat covariates on the co-occurrence of a host and two nest associates. To accomplish these goals, I conducted a large-scale experiment to manipulate presence 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
… single-species, single-season and multi-season occupancy modeling to explore factors influencing distribution and persistence 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 …
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Effects of canopy cover on the landscape epidemiology of an amphibian chytrid fungus
… more typical weather conditions in 2013. I used occupancy modeling to examine how Bd prevalence varied spatially in relation to canopy cover and other environmental covariates, and to determine if weather conditions altered such relationships. I analyzed all common species combined and Spring …
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Resource Selection, Home Range and Habitat Associations of the Southern Fox Squirrel (<i>Sciurus niger niger</i>) in the Piedmont and Coastal Plain of Virginia
… were to investigate the general resource needs, occupancy, and home range of southern fox squirrels as well as the impact of resource partitioning and possible competition with eastern gray squirrels in the Piedmont and Coastal Plain of Virginia. I captured, radio collared and tracked four …
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Ecological insight into three neotropical deer species: A study of spatial and diel distributions of white-tailed, Central American red brocket, and Yucatan brown brocket deer in northern Belize, Central America
… in Belize. In Chapter 1, we used single-season occupancy modeling on WTD and RBD detections to estimate occupancy and identify habitat, predator, and anthropogenic drivers of species distribution and to quantify overlap in space use between the two species. WTD behaved as an edge-and-corridor …
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Habitat, landscape, and climate effects on riparian predator-prey interactions in a human-dominated ecosystem
… in three seasons. In summer 2012, I performed occupancy surveys for mink and concurrently measured crayfish densities and habitat features in 59 stream segments in east-central Illinois. Occupancy modeling showed that mink selected locations based directly on high prey concentrations instead of …
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Wild carnivore habitat use and community ecology in a biodiversity hotspot and human-wildlife conflict with pumas and dogs across Chile
… mega-wildfire in 2017. I used dynamic occupancy modeling of human-wildlife conflict (HWC) across 52 provinces for 8 years in Chile and found that free-ranging dogs outpace pumas in livestock depredation, killing substantially more livestock than pumas. Occupancy models show that HWC …
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The Role of Resource Predictability in the Metapopulation Dynamics of Insects
… formulation of single-species multi-year dynamic occupancy modeling to examine the effect of niche breadth, forest structure and fragmentation on their patch occupancy and vital rates. The specialist species exhibited greater occupancy than generalists, but its less preferred host tree appeared to …
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Small mammal communities in restored prairies: comparing monitoring methods and assessing occupancy responses to local and landscape-scale variables
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-08-01
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Functional Equivalency of Created and Natural Wetlands in the Central Appalachians: Reproductive Success, Call Phenology, and Diet Composition of Amphibians
… wetlands that were examined.;I compared the occupancy and detection of calling anurans in created wetlands relative to natural wetlands to assess temporal calling patterns. Five-minute, ten-minute, and broadcast call surveys were performed at 24 wetlands throughout the Central Appalachians …
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Black bears in Canyon de Chelly National Monument: Life in a changing environment
… black bear habitat use in CACH using an occupancy modeling approach. Model results indicated that fine-scale habitat selection by bears in CACH is being driven by the presence of non-native Russian olive as well as native food sources. Thus availability of native foods may be sufficient …
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