Browsing by Subject "Remote sensing"
Now showing items 1-14 of 14
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A Limnological Examination of the Southwestern Amazon, Madre de Dios, Peru
(2012)This dissertation investigates the limnology of the southwestern Peruvian Amazon centered on the Madre de Dios department by examining first the geomorphology and then the ecology and biogeochemistry of the region's fluvial ... -
Deforestation and Flooding in the Lower Roanoke River Basin
(2022-04-22)The large natural forest ecosystems in the Lower Roanoke River Basin, in northeast North Carolina, are home to numerous and diverse plant and animal species. However, these unique and precious forest ecosystems have been ... -
Ecosystem Consequences of Sea Level Rise and Salinization in North Carolina’s Coastal Wetlands
(2021)Climate change is driving vegetation community shifts in coastal regions of the world, where low topographic relief makes ecosystems particularly vulnerable to sea level rise, salinization, storm surge, and other effects ... -
Ecosystem Response to a Changing Climate: Vulnerability, Impacts and Monitoring
(2017)Rising temperatures with increased drought pose three challenges for management of future biodiversity. First, are the species expected to be vulnerable concentrated in specific regions and habitats? Second, are the impacts ... -
Exploiting Multi-Look Information for Landmine Detection in Forward Looking Infrared Video
(2013)Forward Looking Infrared (FLIR) cameras have recently been studied as a sensing modality for use in landmine detection systems. FLIR-based detection systems benefit from larger standoff distances and faster rates of advance ... -
Improving Radar Imaging with Computational Imaging and Novel Antenna Design
(2017)Traditional radar imaging systems are implemented using the focal planetechnique, steering beam antennas, or synthetic aperture imaging. These conventionalmethods require either a large number of sensors to form a focal ... -
Land Use Land Cover in the Western Ghats, India
(2013-04-26)In India’s Western Ghats mountain range, a UNESCO World Heritage Site and Conservation International biodiversity hotspot, human-caused habitat loss threatens many native species. A number of protected areas have been created ... -
Novel Sensing and Inference Techniques in Air and Water Environments
(2015)Environmental sensing is experiencing tremendous development due largely to the advancement of sensor technology and wireless technology/internet that connects them and enable data exchange. Environmental monitoring sensor ... -
Passive Ecosystem Monitoring: Developing UAS-based monitoring methodologies for tidal wetlands in the NERR System
(2021-04-30)Tidal wetlands perform vital ecosystem services. However, these wetlands confront anthropogenic and natural stressors that are actively contributing to their degradation. In an effort to safeguard tidal wetlands and the ... -
Spatio-temporal dynamics of woody plant-cover in Argentine savannas: encroachment, agriculture conversion and changes in carbon stocks at varying scales
(2015)Land use and land cover changes significantly affect C storage in terrestrial ecosystems. Programs intended to compensate land owners for the maintenance or enhancement to C stocks are promising, but require detailed and ... -
Subwavelength Sensing Using Nonlinear Feedback in a Wave-Chaotic Cavity
(2013)Typical imaging systems rely on the interactions of matter with electromagnetic radiation, which can lead to scattered waves that are radiated away from the imaging area. The goal such an imaging device is to collect these ... -
The Utility of Digital Aerial Surveys in Censusing Dipteryx Panamensis, the Key Food and Nesting Tree of the Endangered Great Green Macaw (Ara Ambigua) in Costa Rica
(2008-10-31)Remote sensing technologies offer an innovative way to study tropical forests and complement research from forest inventory plots. From a logistic standpoint, remote sensing mitigates some of the physical, political, and ... -
Understanding the Coupled Surface-Groundwater System from Event to Decadal Scale using an Un-calibrated Hydrologic Model and Data Assimilation
(2015)In this dissertation, a Hydrologic Data Assimilation System (HDAS) relying on the Duke Coupled surface-groundwater Hydrology Model (DCHM) and various data assimilation techniques including EnKF (Ensemble Kalman Filter), ... -
Understanding the Impacts of Agricultural Expansion on Biodiversity and Habitat Loss
(2018)In recent years, the expansion of agricultural lands into areas rich in biodiversity has led to a conservation dilemma between the need for food security for an expanding human population and the goal of conserving species ...
