Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Physical Sciences and Mathematics (6)
- Environmental Sciences (4)
- Natural Resources and Conservation (3)
- Biodiversity (2)
- Earth Sciences (2)
-
- Forest Management (2)
- Geography (2)
- Geology (2)
- Oceanography (2)
- Oceanography and Atmospheric Sciences and Meteorology (2)
- Remote Sensing (2)
- Social and Behavioral Sciences (2)
- Aerospace Engineering (1)
- Animal Sciences (1)
- Applied Mechanics (1)
- Biogeochemistry (1)
- Botany (1)
- Data Science (1)
- Ecology and Evolutionary Biology (1)
- Engineering (1)
- Forest Biology (1)
- Fresh Water Studies (1)
- Geochemistry (1)
- Mechanical Engineering (1)
- Other Plant Sciences (1)
- Paleontology (1)
- Plant Sciences (1)
- Sedimentology (1)
Articles 1 - 9 of 9
Full-Text Articles in Forest Sciences
Using Deep Learning With Satellite Imagery To Estimate Deforestation Rates, Maeve Naughton-Rockwell
Using Deep Learning With Satellite Imagery To Estimate Deforestation Rates, Maeve Naughton-Rockwell
Undergraduate Honors Theses
Previous studies have used Convolutional Neural Networks for regional detection of deforestation breaks. However, there is limited research into the capability of deep neural networks to identify sudden shifts in global forest cover from satellite imagery. Additionally, many deforestation detection models are trained on region specific data and need manual input thresholds. In this work, we develop a deep learning model to predict the percent of deforestation in a region between two points in time, trained on globally sourced data. Using the before and after satellite images of a deforestation event as inputs, we implemented a two input Convolutional Neural …
Three Centuries Of Vegetation Change In The William & Mary College Woods Reconstructed Using Phytoliths, Timothy Terlizzi
Three Centuries Of Vegetation Change In The William & Mary College Woods Reconstructed Using Phytoliths, Timothy Terlizzi
Undergraduate Honors Theses
The College Woods, west of William & Mary’s campus, consists of ~900 acres of protected southern mixed hardwood forest. The woods surround Lake Matoaka, a former millpond established in ~1700. Despite the rich history of the area, little is known about how the dominant vegetative landcover has shifted over the last 300 years. This study set out to quantify the modern vegetation within the College Woods via the phytolith assemblages within the soil and identify shifts in the assemblages since the creation of Lake Matoaka and whether these changes are distinct from the vegetation that existed in the area before …
Reconstructing Coastal Forest Retreat And Marsh Migration Response To Historical Sea Level Rise, Nathalie Schieder
Reconstructing Coastal Forest Retreat And Marsh Migration Response To Historical Sea Level Rise, Nathalie Schieder
Dissertations, Theses, and Masters Projects
Climate change assessments predict that rates of relative sea level rise will increase in the future, leading to enhanced inundation of low-lying coastal regions and a 20 – 50 % decline in salt marsh area by 2100. Global sea level rise began accelerating in the late 19th to early 20th century, and local rates along the U.S. mid-Atlantic coast are twice as fast as global estimates. Frequent flooding and salt stress associated with sea level rise lead to coastal transgression, and the survival of ecosystems depends on their ability to migrate inland faster than they erode and submerge. Here, I …
Microburst Damage Assessment And Forest Composition Reconstruction After Hurricane Isabel In The College Woods, Williamsburg, Va, Kjarstin Alane Carlson-Drexler
Microburst Damage Assessment And Forest Composition Reconstruction After Hurricane Isabel In The College Woods, Williamsburg, Va, Kjarstin Alane Carlson-Drexler
Dissertations, Theses, and Masters Projects
No abstract provided.
Development Of Generalized Index-Removal Models, With Particular Attention To Catchability Issues, Thomas F. Ihde
Development Of Generalized Index-Removal Models, With Particular Attention To Catchability Issues, Thomas F. Ihde
Dissertations, Theses, and Masters Projects
The index-removal method estimates abundance, exploitation and catchability coefficient, given surveys conducted before and after a known removal. The method assumes a closed population between surveys. Index-removal has seldom been applied due to its strong assumption of constant survey catchabilities. This work generalizes the method to allow multiple years of data to be incorporated, and the assumptions of the original model to be relaxed. If catchability is constant across years, precision can be improved by analyzing multi-year data simultaneously. Two multiple-year models were developed: the first, 1qIR, assumes constant catchability within and among years; the second, 2qIR, allows catchability to …
Long Term Permanent Vegetation Plot Studies In The Matoaka Woods, Williamsburg, Virginia : Establishment And Initial Data Analysis Of Plots Established With The North Carolina Vegetation Survey Protocol, Resampling Of Single Circular Plots And A Comparison Of Results From North Carolina Vegetation Survey Protocol And Single Circular Plot Methods, Jacob Robert George Kribel
Dissertations, Theses, and Masters Projects
No abstract provided.
A Semi-Empirical Cellular Automata Model For Wildfire Monitoring From A Geosynchronous Space Platform, Brian D. Killough
A Semi-Empirical Cellular Automata Model For Wildfire Monitoring From A Geosynchronous Space Platform, Brian D. Killough
Dissertations, Theses, and Masters Projects
The environmental and human impacts of wildfires have grown considerably in recent years due to an increase in their frequency and coverage. Effective wildfire management and suppression requires real-time data to locate fire fronts, model their propagation and assess the impact of biomass burning. Existing empirical wildfire models are based on fuel properties and meteorological data with inadequate spatial or temporal sampling. A geosynchronous space platform with the proposed set of high resolution infrared detectors provides a unique capability to monitor fires at improved spatial and temporal resolutions. The proposed system is feasible with state-of-the-art hardware and software for high …
Use Of A Digital Multispectral Video System And Spectroradiometer For Bottomland Hardwood Forest Remote Sensing: A Jurisdictional Boundary Accuracy Assessment And Radiance Examination, Jill E. Meyer
Dissertations, Theses, and Masters Projects
No abstract provided.
Forest Fires In Western Europe In 1987, Philippe Le Canut
Forest Fires In Western Europe In 1987, Philippe Le Canut
Dissertations, Theses, and Masters Projects
No abstract provided.