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Prioritizing Riparian Cooridors for Water Quality Protection in Urbanizing Watersheds

Description: This article describes the design of a GIS and remote sensing based analysis tool called the Water Quality Corridor Management model to identify and prioritize highly functioning riparian ecosystems for the preservation of steam corridor conditions.
Date: May 21, 2010
Creator: Atkinson, Samuel F.; Hunter, Bruce & English, April
Item Type: Refine your search to only Article
Partner: UNT College of Arts and Sciences
open access

An Analysis of the Habitat of the Greater One-Horned Rhinoceros Rhinoceros Unicornis (Mammalia: Perissodactyla: Rhinocerotidae) at the Chitwan National Park, Nepal

Description: This article uses geographic information systems and landscape-level data obtained from remote sensing sources to build a habitat suitability index model for the Greater One-horned Rhinoceros.
Date: September 26, 2014
Creator: Thapa, Vivek; Acevedo, Miguel F. & Limbu, Kul P.
Item Type: Refine your search to only Article
Partner: UNT College of Engineering
open access

Quantifying Forest Vertical Structure to Determine Bird Habitat Quality in the Greenbelt Corridor, Denton, Tx

Description: This study presents the integration of light detection and range (LiDAR) and hyperspectral remote sensing to create a three-dimensional bird habitat map in the Greenbelt Corridor of the Elm Fork of the Trinity River. This map permits to examine the relationship between forest stand structure, landscape heterogeneity, and bird community composition. A biannual bird census was conducted at this site during the breeding seasons of 2009 and 2010. Census data combined with the three-dimensional map … more
Date: August 2013
Creator: Matsubayashi, Shiho
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Ground-Water Resources of Chester County, Pennsylvania

Description: From purpose and scope: This report provides basic information on the ground-water resources of Chester County, Pennsylvania, which is an area of about 760 square miles (1970 meters) in southeastern Pennsylvania. It discusses the availability and quality of the water in the water-bearing units in the county and the relation of the ground water to surface water.
Date: September 1977
Creator: McGreevy, Laurence J. & Sloto, Ronald A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Preliminary Applications of Landsat Images and Aerial Photography for Determining Land-Use, Geologic, and Hydrologic Characteristics--Yampa River Basin, Colorado and Wyoming

Description: From abstract: "This study used Landsat images and small-scale color and color-infrared photographs for selected geologic, hydrologic, and land-use applications within the Yampa River Basin" in Colorado and Wyoming. It includes maps, tables, and a glossary.
Date: October 1978
Creator: Heimes, Frederick J.; Moore, Gerald K. & Steele, Timothy Doak
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Application of Thermal Imagery and Aerial Photography to Hydrologic Studies of Karst Terrane in Missouri

Description: From abstract: Planning waste-disposal facilities and impoundments is complicated by karst carbonate terrane in the Ozarks. Thermal imagery (8-13 micrometer wavelength) and color infrared photography aid in identifying losing streams, sinkholes and hydrologic conditions encouraging collapse. Imagery and photography were acquired in Greene and Reynold Counties, Mo., in March 1972 and June 1973. Differences in thermal levels correlating with losing and gaining reaches of Logan Creek valley, Reyno… more
Date: September 1977
Creator: Harvey, E. J.; Williams, J. H. & Dinkel, T. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Ecological Responses to Severe Flooding in Coastal Ecosystems: Determining the Vegetation Response to Hurricane Harvey within a Texas Coast Salt Marsh

Description: Vegetative health was measured both before and after Hurricane Harvey using remotely sensed vegetation indices on the coastal marshland surrounding Galveston Island's West Bay. Data were recorded on a monthly basis following the hurricane from September of 2005 until September of 2019 in order to document the vegetation response to this significant disturbance event. Both initial impact and recovery were found to be dependent on a variety of factors, including elevation zone, spatial proximity … more
Date: August 2021
Creator: Hudman, Kenneth Russell
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

The Bobwhite Population Decline: Its History, Genetic Consequences, and Studies on Techniques for Locating and Assessing Current Populations

Description: The northern bobwhite (Colinus virginianus) population decline is a severe, rangewide phenomenon beginning >150 years ago and continuing today. In this investigation, I: 1. document the timeline of bobwhite population decline and unintended genetic consequences of attempted remedies, 2) develop a model useful for predicting possible locations of potentially sustainable bobwhite populations in semiarid rangeland in Texas and Oklahoma, and 3) examine the relationship between population monitoring… more
Date: May 2019
Creator: Whitt, Jeffrey Glen
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Archeological Testing at Fort St. Leon, Plaquemines Parish, Louisiana

Description: This report describes archaeological testing at a site known as Fort St. Leon in Louisiana. Studies were made of levee building, geomorphology, and comparison of archival maps and aerial photographs, which contribute to the understanding of human activity as well as geological processes at the site.
Date: May 1983
Creator: Gilmore, Kathleen & Noble, Vergil
Item Type: Refine your search to only Report
Partner: UNT Institute of Applied Sciences
open access

Characterizing recent and projecting future potential patterns of mountain pine beetle outbreaks in the Southern Rocky Mountains

Description: This article aims to quantify the landscape-level drivers that explain the dynamic patterns of mountain pine beetle (MPB) mortality, and simulate areas with future potential MPB mortality under projected climate-change scenarios in Grand County, Colorado, USA.
Date: September 29, 2014
Creator: Liang, Lu; Hawbaker, Todd J.; Chen, Yanlei; Zhu, Zhiliang & Gong, Peng
Item Type: Refine your search to only Article
Partner: UNT College of Engineering
open access

A Comparison of Universal Soil Loss Equation Results Using a Remote Sensing/GIS Technique to Results Obtained Using a Field Survey Technique

Description: Digital satellite remote sensing and Geographic Information Systems (GIS) have been used in conjunction with the Universal Soil Loss Equation (USLE) to model soil erosion potential within watersheds. This study compared erosion estimates calculated by the remote sensing method to results obtained in the field by soil conservationists using conventional methods.
Date: December 1990
Creator: Hunter, Bruce Allan
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Modelling Land Use Change and Nonpoint Source Pollution Potential Using Remote Sensing and Geographic Information System Technology

Description: In this study Geographic Information System (GIS) technology was integrated with remote sensing techniques in order to determine the potential for nonpoint source pollution in the Lake Palestine and Cedar Creek Reservoir watersheds of North Central Texas. The Universal Soil Loss Equation was used to determine soil erosion potential from the watersheds, and export coefficients were used to estimate nutrient loadings into the reservoirs.
Date: August 1990
Creator: Walker, Scott William
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Estimating Nonpoint Source Pollution in North Texas Watersheds through Remote Sensing and Geographic Information Systems

Description: Monitoring nonpoint source pollution in a large area is often impractical. However, estimating nonpoint pollution through use of empirical models such as the Universal Soil Loss Equation (USLE) provides a basis for identifying problem areas, and setting management priorities. The purpose of this study was to determine the feasibility of using Landsat imagery and existing geographic data to estimate the effects of land use changes on water quality in four North Texas watersheds over a twelve yea… more
Date: December 1989
Creator: Groome, Kristina M. (Kristina Martin)
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Comparison of IKONOS Derived Vegetation Index and LiDAR Derived Canopy Height Model for Grassland Management.

Description: Forest encroachment is understood to be the main reason for prairie grassland decline across the United States. In Texas and Oklahoma, juniper has been highlighted as particularly opportunistic. This study assesses the usefulness of three remote sensing techniques to aid in locating the areas of juniper encroachment for the LBJ Grasslands in Decatur, Texas. An object based classification was performed in eCognition and final accuracy assessments placed the overall accuracy at 94%, a significant… more
Date: December 2009
Creator: Parker, Gary
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Integrated Land Ecosystem-Atmosphere Processes Study: Science Plan and Implementation Strategy

Description: The iLEAPS Science Plan and Implementation Strategy defines the scientific objectives and key research issues of the land-atmosphere project of the International Geosphere-Biosphere Programme. It also outlines a strategy for addressing the key research questions. The scope of iLEAPS research spans from molecular level processes - such as synthesis of volatile organic compounds in vegetation - to Earth System science issues, climate and global change. iLEAPS research emphasises the importance o… more
Date: 2005
Creator: Integrated Land Ecosystem-Atmosphere Processes Study
Item Type: Refine your search to only Text
Partner: UNT Libraries
open access

Global Wetland Distribution and Functional Characterization: Trace Gases and the Hydrologic Cycle

Description: The IGBP Wetlands workshop (Santa Barbara, CA, USA,16-20 May 1996) was held for the purpose of identifying data and research needs for characterizing wetlands in terms of their role in biogeochemical and hydrologic cycles. Wetlands cover only about 1% of the Earth's surface, yet are responsible for a much greater proportion of biogeochemical fluxes between the land surface, the atmosphere and hydrologic systems. They play a particularly important function in processing methane, carbon dioxide, … more
Date: 1998
Creator: Sahagian, Dork & Melack, John
Item Type: Refine your search to only Text
Partner: UNT Libraries
open access

Capability and cost assessment of the major forest nations to measure and monitor their forest carbon

Description: According to the Executive Summary, the aims and objective of this report are to provide an assessment of national capacity and capability in 25 tropical countries for measuring and monitoring forest as a requirement for reporting on REDD under IPCC guidelines. This paper was commissioned by the United Kingdom Office of Climate Change as background work to its report 'Climate Change: Financing Global Forests' (the Eliasch Review).
Date: April 7, 2008
Creator: Harcastle, P. D.; Baird, David & Harden, Virginia
Item Type: Refine your search to only Text
Partner: UNT Libraries
open access

A Storm Water Runoff Investigation Using Gis and Remote Sensing

Description: Environmental controls are becoming more and more expensive to implement, so environmental management is becoming more technologically advanced and efficient through the adoption of new techniques and models. This paper reviews the potential for storm water runoff for the city of Denton, Texas and with the main objective to perform storm water runoff analyses for three different land use datasets; each landuse dataset created with a different methodology. Also analyzed was the difference betwee… more
Date: August 2012
Creator: Jennings, Laura
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Applications of Remote Sensing and GIS to Modeling Fire for Vegetative Restoration in Northern Arizona

Description: An accurate fire model is a useful tool in predicting the behavior of a prescribed fire. Simulation of fire requires an extensive amount of data and can be accomplished best using GIS applications. This paper demonstrates integrative procedures of using of ArcGIS™, ERDAS Imagine™, GPS, and FARSITE© to predict prescribed fire behavior on the Kaibab-Paiute Reservation. ArcGIS was used to create a database incorporating all variables into a common spatial reference system and format for the FARSIT… more
Date: August 2003
Creator: Hardison, Tanya
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Analysis of the One-Horned Rhinoceros (Rhinoceros Unicornis) Habitat in the Royal Chitwan National Park, Nepal.

Description: This study analyzes the remaining suitable habitat of the one-horned rhinoceros, Rhinoceros unicornis, in Royal Chitwan National Park of Nepal. An April 2003 Landsat image was classified into eight land cover types: wetland, sand, water, mixed forest, sal forest, agriculture, settlement, and grassland. This image was converted into habitat suitability maps using cover, food, and water. The rhinoceros prefers grassland habitat with oxbow lakes and closed canopy during the monsoon season. Nomina… more
Date: December 2005
Creator: Thapa, Vivek
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
open access

Correlation of Watershed NDVI Values to Benthic Macroinvertebrate Biodiversity in Eight North American Wadeable Streams

Description: Water quality of a stream or river is influenced by the surrounding landscape and vegetation. The Normalized Difference Vegetation Index (NDVI) is commonly used to characterize landcover and vegetation density. Benthic macroinvertebrates are ubiquitous in freshwater streams and are excellent indicators of the quality of freshwater habitats. Data from one NDVI remote sensing flight and one macroinvertebrate sampling event for eight wadeable stream study sites in the National Ecological Observ… more
Date: May 2022
Creator: Gallagher, Denice Lynne
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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