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 60 for “"camera traps"”.
-
Camera traps as sensor networks for space-time exploration of terrestrial mammal communities
… are essentially about ecological communities. Camera trapping technology has led to a surge in the collection of large ecological datasets, which provides an unmissable opportunity to attain deeper knowledge of animal community assembly and structure. Using extensive camera trap data, this …
-
From camera traps to conservation: biodiversity and mammal functional diversity in the Langkloof Corridor, Eastern Cape province, South Africa
… linking two major provincial reserves. Using camera trap surveys across 36 sites, the study assessed both taxonomic and functional diversity, examining the role of land protection status, landscape heterogeneity, vegetation structure, fire, livestock grazing, invasive alien plants, water …
-
Investigating the conservation value of leopard population indices obtained through camera traps in the greater Kruger region of South Africa
… other often neglected data routinely recorded by camera traps that are potentially important to refining population monitoring efforts. Specifically, I investigate temporal leopard activity quantified using time stamps on photographs of individuals and the potential drivers of activity patterns …
-
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 …
-
Cattle and badger dynamics in relation to the potential transmission of Mycobacterium bovis
… was collected using three different methods; camera traps, GPS collars deployed on badgers and cattle grazing locations recorded by farmers.<br/><br/>The results found that setts and latrines were focal points for indirect contact between badgers and cattle throughout the studies. Not only did …
-
Structure of a primate community in Reserve Adolpho Ducke, central Amazonia
… study explored, how the new frontier of arboreal camera trap technology can be used to survey primates. Eleven camera traps were situated in the canopy for 91 days between January - April 2018 capturing 11,643 images and videos. 261 of these files had images and videos of detections recording five …
-
Multiscale patterns of mammal diversity and occurrence in the Karoo
… To accomplish these objectives, I deployed three camera trap surveys at different geographic extents, with differing array designs. At the broadest geographical extent, I utilised an array consisting of 25 sites (125 camera traps total) that were selected using the Latin hypercube method. At the …
-
An examination of facilitative interactions between shrubs and local desert organisms within the desert ecosystems of southern California
… Southern California was conducted (Chapter 5). Camera traps were used at distinct ecosystems across southern California to determine vertebrate association. Areas of high shrub density influenced the richness and evenness of vertebrate species, while increasing temperatures negatively impacted …
-
Provisioning and Its Effects on the Social Interactions of Tibetan Macaques (<i>Macaca Thibetana</i>) at Mt. Huangshan, China
… and scan sampling were used for data recorded by camera traps. Trail-cameras were placed at six locations that contain natural and human food resources and recorded 60-second videos. Social behavior and proximity of the monkeys were recorded. I found that <em>M. thibetana</em> maintain closer …
-
The Effects of Diet and Predation on Nesting Herring Gulls (Larus argentatus) in Pukaskwa National Park
… by examining gull nest attentiveness with camera traps. Gulls utilizing anthropogenic food sources exhibited reduced levels of stress-associated hormones, increased egg size, and increased day-time nest attentiveness. Gulls were significantly more attentive to their nests during the day …
-
No Longer the Big Bad Wolf: The Expedition to Secure Wolf Self-Portraits and Its Impact On the Bureau of Biological Survey
… beginning a conversation about the importance of camera traps in the history of visual media, it also allows for additional insight into the machinations of the Bureau of Biological Survey (the Survey) during the 1930s. Founded in 1885, the Survey had several duties, including the advancement of …
-
EVALUATION OF A FOREST RESTORATION STRATEGY ON SMALL MAMMALS IN SOUTHERN PINE ECOSYSTEMS
… across larger scales. I utilized bucket camera traps (Hunt Trap) to detect small mammal communities and assess informative forest structure characteristics in sites representative of the retention strategy, which emphasizes forest structure management (i.e., fire) instead of overstory …
-
The Sleepless Forest Observers : Ecologists are using remote observation to advance their understanding of environments. Are they losing something in the process?
In recent years, camera traps, acoustic recorders, genetic methods to identify organisms using DNA they shed into their environments (eDNA), tags on animals to log their behaviors, and aircraft or satellite remote sensing to identify environments and species have all become less expensive, and the …
-
Space Use and Survival of White-Tailed Deer in a Disturbance-Driven System Containing a Restored Apex Predator
… survival of deer, I analyzed GPS telemetry and camera trap data, highlighting the factors influencing deer space use across hydrological and biological seasons, and connected behavioral data captured on camera traps to female deer survival. Space use is primarily a function of intrinsic sex …
-
Fruit bat diet, foraging ecology and seed dispersal in the Vhembe Biosphere Reserve.
… litchi abundance during the harvest season using camera traps. This study also used a vertebrate exclusion experiment to quantify the effect of excluding crop raiders on yield, as well as a questionnaire survey to quantify the perceived damage in litchi orchards. The study was conducted in the …
-
The Influence of Heterogeneous Landscapes on Banded Mongoose (Mungos mungo) Behavior in Northern Botswana: Inferences about Infectious Disease Transmission
… Using behavior data from remote sensing camera traps, a generalized linear mixed model identified vigilance behavior, land use, and their interaction as important factors in predicting olfactory behavior. Cluster and Classification and Regression Tree (CART) analysis of active den sites …
-
VERTEBRATE COMMUNITY CHANGES ACROSS A 3200M AMAZON-TO-ANDES GRADIENT: COMPOSITION, STRUCTURE, AND OCCUPANCY
… range. Here we present findings from two camera surveys in 2013 and 2016 conducted in and near Manu National Park, Peru. In 2013, 53 camera traps were installed between 3693 -1271 m a.s.l to identify both mammal and bird species along two parallel elevational transects composed of tropical …
-
Is the grass really greener on the other side?
… rates (determined from photos captured by camera traps) indicated a higher degree of herbivory at the enriched site. However, there was no difference in the δ¹³C value, nitrogen and phosphorus content in the ungulate dung collected amongst the study sites suggesting no change in the diet. …
-
Neural Region-of-Interest-Aware Video Compression for Wildlife Monitoring Under Edge Computing Constraints
Wildlife camera traps can produce far more video than is practical to store locally or transmit from remote sites. In many clips, the animal occupies only a small part of the frame, while most of the image is background. Standard whole-frame compression does not account for this imbalance and may …
-
Non-invasive monitoring for population assessments of a critically endangered Neotropical primate
… molecular methods. I evaluated the use of canopy camera traps as an effective tool to detect and for a population assessment of non-habituated groups of muriqui and other arboreal primates (Callithrix flaviceps and Sapajus nigritus) in remote areas, demonstrating the applicability of the method …
Page 1 of 3