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Articles 1 - 13 of 13
Full-Text Articles in Physical Sciences and Mathematics
Assessing The Relationships Between The Spatial Variation In Land-Use Spatial Patterns And Surface Water Quality, Majed A. Khater
Assessing The Relationships Between The Spatial Variation In Land-Use Spatial Patterns And Surface Water Quality, Majed A. Khater
UNLV Theses, Dissertations, Professional Papers, and Capstones
The purpose of this dissertation was to examine the association between the spatial patterns of urban land uses and surface water quality parameters at the watershed outlet. The aim of the study was to understand the strength and nature of this relationship, and examine new methods of classifying and quantifying contributing urban land-uses and their spatial patterns. The hypothesis of this research was: in an urban watershed, the variation in the spatial patterns of contributing land uses will have a significant impact on the surface water quality parameters at the watershed outlet.
This relationship between urbanization and water quality is …
Prediction Of Sediment-Bound Nutrient Delivery From Semi-Arid California Watersheds, Emmanuel Gabet, Noah Fierer, Oliver Chadwick
Prediction Of Sediment-Bound Nutrient Delivery From Semi-Arid California Watersheds, Emmanuel Gabet, Noah Fierer, Oliver Chadwick
Faculty Publications
Soil carbon (C), nitrogen (N), and phosphorus (P) are lost from hillslopes in particulate forms through soil erosion. The fate of the eroded C (e.g., sequestration or oxidation) may affect the global C budget, and delivery of N and P to waterbodies can lead to eutrophication. Whereas the magnitude of particulate nutrient losses may be similar to or greater than dissolved losses, it is rarely estimated. We couple a sediment delivery model with measurements of C, N, and P in soil to account explicitly for hillslope sediment transport processes that yield sediment-bound nutrients to fluvial networks. The model is applied …
Slides: The Trust For Public Land: Conserving Land For People, Ernest Cook
Slides: The Trust For Public Land: Conserving Land For People, Ernest Cook
Community-Owned Forests: Possibilities, Experiences, and Lessons Learned (June 16-19)
Presenter: Ernest Cook, Senior Vice President, Conservation Finance Program, The Trust for Public Land, Boston, MA
19 slides
Slides: Community Ownership And Management Of Productive Forestland: Building Natural And Social Capital, Keith Bisson, Rodger Krussman
Slides: Community Ownership And Management Of Productive Forestland: Building Natural And Social Capital, Keith Bisson, Rodger Krussman
Community-Owned Forests: Possibilities, Experiences, and Lessons Learned (June 16-19)
Presenters: Keith Bisson, Quebec-Labrador Foundation, and Rodger Krussman, The Trust for Public Land
20 slides
Water Quality Sampling, Analysis And Annual Load Determinations For Tss, Nitrogen And Phosphorus At The Washington County Road 76 Bridge On Ballard Creek, Marc A. Nelson, L. Wade Cash, G. Keith Trost, Jennifer Purtle
Water Quality Sampling, Analysis And Annual Load Determinations For Tss, Nitrogen And Phosphorus At The Washington County Road 76 Bridge On Ballard Creek, Marc A. Nelson, L. Wade Cash, G. Keith Trost, Jennifer Purtle
Technical Reports
The Illinois River Basin has experienced water quality impairment from non-point source pollution for many years. This fact was well documented in the State of Arkansas' Water Quality Assessment report, the Soil Conservation Service River Basin Study, and several University of Arkansas studies. Thirty-seven sub-watersheds have been identified by the SCS in the Arkansas portion of the Illinois River basin. In the Arkansas portion of the Basin, the Illinois River, Evansville Creek, Baron Fork, Cincinnati Creek, Muddy Fork, Moores Creek, Clear Creek, Osage Creek and Flint Creek were all classified as not supporting their designated use as primary contact recreation …
Water Quality Sampling, Analysis And Annual Load Determinations For Tss, Nitrogen And Phosphorus At The Washington County Road 195 Bridge On The West Fork Of The White River, 2004 Annual Report, Marc A. Nelson, L. Wade Cash, G. Keith Trost, Jennifer Purtle
Water Quality Sampling, Analysis And Annual Load Determinations For Tss, Nitrogen And Phosphorus At The Washington County Road 195 Bridge On The West Fork Of The White River, 2004 Annual Report, Marc A. Nelson, L. Wade Cash, G. Keith Trost, Jennifer Purtle
Technical Reports
A water quality sampling station was installed at the Washington County road 195 bridge on the West Fork of the White River just above the confluence of the three main forks of the Upper White River in December 2001. The Quality Assurance Project Plan (QAPP) was approved by EPA Region six on March 2002 and sampling was begun at that time. This station is coordinated with a USGS gauging station at the same location. This station was instrumented to collect samples at sufficient intervals across the hydrograph to accurately estimate the flux of total suspended solids, nitrogen and phosphorus into …
Illinois River 2004 Pollutant Loads At Arkansas Highway 59 Bridge, Marc A. Nelson, L. Wade Cash, Keith Trost, Jennifer Purtle
Illinois River 2004 Pollutant Loads At Arkansas Highway 59 Bridge, Marc A. Nelson, L. Wade Cash, Keith Trost, Jennifer Purtle
Technical Reports
Automatic water sampler and a U. S. Geological Survey gauging station were established in 1995 on the main stem of the Illinois River at the Arkansas Highway 59 Bridge. Since that time, continuous stage and discharge measurements and water quality sampling have been used to determine pollutant concentrations and loads in the Arkansas portion of the Illinois River. This report represents the results from the measurement and sampling by the Arkansas Water Resources Center -Water Quality Lab for January 1, 2004 to December 31, 2004.
Hyperspectral Simulation And Recovery Of Submerged Targets In Turbid Waters, Charles R. Bostater
Hyperspectral Simulation And Recovery Of Submerged Targets In Turbid Waters, Charles R. Bostater
Ocean Engineering and Marine Sciences Faculty Publications
Modeled hyperspectral reflectance signatures just above the water surface are obtained from radiative transfer models to create synthetic images of targets below the water surface. Images are displayed as 24 bit RGB images of the water surface using selected channels. Example model outputs are presented in this paper for a hyperspectral Monte Carlo and a hyperspectral layered analytical iterative model of radiative transport within turbid shallow water types. Images at the selected wavelengths or channels centered at 490, 530 and 680 nm suggests the two models provide quite similar results when displayed as RGB images. The techniques are demonstrated to …
Land Planning And Development Mitigation For Protecting Water Quality In The Great Lakes System: An Evaluation Of U.S. Approaches, Elizabeth Brabec, Peter Kumble
Land Planning And Development Mitigation For Protecting Water Quality In The Great Lakes System: An Evaluation Of U.S. Approaches, Elizabeth Brabec, Peter Kumble
Landscape Architecture & Regional Planning Faculty Publication Series
A review of the land use/water quality interface of the Great Lakes system, and the monitoring programs in place. The paper reviews the weakness in the system and suggests opportunities for improvement.
Land Planning And Development Mitigation For Protecting Water Quality In The Great Lakes System: An Evaluation Of U.S. Approaches, Elizabeth Brabec, Peter Kumble
Land Planning And Development Mitigation For Protecting Water Quality In The Great Lakes System: An Evaluation Of U.S. Approaches, Elizabeth Brabec, Peter Kumble
Elizabeth Brabec
A review of the land use/water quality interface of the Great Lakes system, and the monitoring programs in place. The paper reviews the weakness in the system and suggests opportunities for improvement.
Development Of A Quality-Assessed Agrichemical Database For Monitoring Anthropogenic Impacts On Ground-Water Quality, Mary Exner Spalding, Roy F. Spalding, Dorothy M. Harrell
Development Of A Quality-Assessed Agrichemical Database For Monitoring Anthropogenic Impacts On Ground-Water Quality, Mary Exner Spalding, Roy F. Spalding, Dorothy M. Harrell
School of Natural Resources: Faculty Publications
The Quality-Assessed Agrichemical Contaminant Database for Nebraska Ground Water is a unique repository of nitrate and pesticide data collected by federal, state, and local agencies. Each contaminant concentration in the database has been evaluated based upon well-defined criteria that address completeness of the well-attribute data, analytical method and field and laboratory quality control practices and assigned to one of five quality levels. The quality assessment level always accompanies the contaminant concentration so that the end-user knows the quality assurance effort expended in the acquisition of the data, can select comparable data, and choose data whose quality assurance effort is commensurate …
Land Planning And Development Mitigation For Protecting Water Quality In The Great Lakes System: An Evaluation Of Us Approaches, Elizabeth Brabec, Peter Kumble
Land Planning And Development Mitigation For Protecting Water Quality In The Great Lakes System: An Evaluation Of Us Approaches, Elizabeth Brabec, Peter Kumble
Elizabeth Brabec
Since 1978, studies by the International Joint Commission (the bi-national commission mandated to protect the Great Lakes) have shown increasing water quality stress due to urban non-point source pollution. The key question for the IJC today, as an international commission with no direct enforcement power, is how the IJC can be effective in getting the parties and their jurisdictions to improve management of non-point source pollution issues when the land use trigger is primarily a local government issue. To begin to answer this question, the primary objective of this current study is to assemble the latest data and analysis on …
A Review Of Phytoplankton Composition Within Chesapeake Bay And Its Tidal Estuaries, Harold G. Marshall, Lubomira Burchardt, Richard Lacouture
A Review Of Phytoplankton Composition Within Chesapeake Bay And Its Tidal Estuaries, Harold G. Marshall, Lubomira Burchardt, Richard Lacouture
Biological Sciences Faculty Publications
Based on a continuous 20-year data base ofmonthly sampling in Chesapeake Bay and tidal regions of its major tributaries, 1454 phytoplankton taxa have been identified in these waters. They represent a diverse assemblage of species with a dominant diatom flora throughout the year, in addition to large seasonal representation by chlorophytes, cyanobacteria, cryptophytes and dinoflagellates. Included among this flora were 34 potential harmful or toxin producing species. The phytoplankton compositions associated with the seasonal successional patterns are discussed, in addition to characterizing the dominant floral relationships, with comparison to early composition records within the Bay. Several of the present day …