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Poultry Litter-Treated Length Effects On Quality Of Runoff From Fescue Plots, Dwayne R. Edwards, Philip A. Moore Jr., Tommy C. Daniel, Puneet Srivastava

Biosystems and Agricultural Engineering Faculty Publications

Using experimental data and/or mathematical simulation models to identify practices that reduce pollution from manure-treated areas is sometimes perceived as limited by the unknown validity of extrapolating plot-scale data to larger areas and by uncertainties in modeling transport of various pollutants. The objectives of this study were to assess the effect of length of manure treatment on runoff concentrations of poultry litter constituents and to define the modes of transport (particulate versus soluble) for nitrogen (N), phosphorus (P), carbon (C), and solids. Poultry litter was applied to three 1.5- x 18.3-m fescue (Festuca arundinacea Schreb.) plots with runoff collection …

Application Of Simplified Phosphorus Transport Models To Pasture Fields In Northwest Arkansas, Dwayne R. Edwards, C. T. Haan, Andrew N. Sharpley, John F. Murdoch, Tommy C. Daniel, Philip A. Moore Jr.

Biosystems and Agricultural Engineering Faculty Publications

Runoff transport of phosphorus (P) is often predicted from simple equations with parameters determined from data applicable primarily to row-cropped and fallow cover conditions. The applicability, accuracy, and precision of such P transport prediction equations under pasture situations are less well defined. The objectives of this study were to determine parameters of simplified runoff P transport equations for pasture fields and to assess the accuracy and precision of the equations. Runoff, sediment yield, soluble P transport, and particulate P transport data were collected from four pasture fields in northwestern Arkansas. Runoff event enrichment ratios and extraction coefficients were computed, and …

Hydrologic Factors Affecting The Discharge Of Ground Water In The Red River Of The North Basin, Northeastern North Dakota, Michael Lee Strobel

Theses and Dissertations

Ground-water discharge from bedrock aquifers contributes significant amounts of salinity to the Red River of the North. The area of major discharge is represented on the land surface by saline soils, wetlands, and flowing wells. As tributaries flow through these areas, the dissolved-solids concentrations in the streams increase. This salinity is then transported to the Red River of the North and northward to Canada. The bedrock units that supply the saline water are mainly the Dakota Group. Overlying the bedrock are sediments from numerous glacial advances and lacustrine sediments from glacial Lake Agassiz. These units form confining layers over the …

The Depositional Environment Of The Kisbey Sandstone From The Madison Group (Mississippian), North-Central North Dakota, Gregory D. Waltz

Theses and Dissertations

The Kisbey Sandstone, also known as the K-2 marker, was studied to understand its depositional environment. It occurs within the Madison Group (Mississippian) of North Dakota. The Madison Group is a regressive, near-shore sequence. In descending order, this Group comprises the Charles, Mission Canyon, and Lodgepole Formations. The K-2 marker appears as well-log defined unit between the Charles and Mission Canyon Formations. Seven counties comprise the 7100 square mile study area. They include Rolette, Bottineau, Renville, McHenry, Ward, Burke, Mountrail Counties, and the southern most adjacent townships in Canada.

For this study, 1677 well-logs were examined. These data were analyzed …

An Ice-Shelf Model Test Based On The Ross Ice Shelf, D. R. Macayeal, V. Rommelaere, P. Huybrechts, Christina L. Hulbe, J. Determann, C. Ritz

Geology Faculty Publications and Presentations

A standard numerical experiment featuring the Ross Ice Shelf, Antarctica, is presented as a test package for the development and intercomparison of ice-shelf models. The emphasis of this package is solution of stress-equilibrium equations for an ice-shelf velocity consistent with present observations. As a demonstration, we compare five independently developed ice-shelf models based on finite-difference and finite-element methods. Our results suggest that there is little difference between finite-element and finite-difference methods in capturing the basic, large-scale flow features of the ice shelf. We additionally show that the fit between model and observed velocity depends strongly on the ice-shelf temperature field …

Mechanical And Chemical Weathering Of Periglacial And Non-Periglacial Forms On The Eastern Fosheim Peninsula, Ellesmere Island (Northwest Territories), Cameron Lawrence Chadwick

Theses and Dissertations (Comprehensive)

The purpose of this study is to examine the differences in the mechanical and chemical weathering of different periglacial and non-periglacial forms on the eastern Fosheim Peninsula. Forms studied include: solifluction lobes, non-sorted stripes, polygons, mudboils, wetted sloped, dry ridge and wet meadow. Most sites including the periglacial forms of solifluction lobes, non-sorted stripes, and polygons show signs of chemical and mechanical weathering. The weathering found at all sites was minute but may be significant given the slow rates of weathering in this environment. The individual environmental variables of moisture and temperature levels do not appear to have a direct …

Using Digital Elevation Models To Measure The Surface And Volumetric Change Of Athabasca Glacier, Alberta, Canada, 1919-1979, James Robb Reynolds

Theses and Dissertations (Comprehensive)

The Athabasca Glacier (52˚12'N, 117˚14'W) located at the Alberta-British Columbia border was studied to quantify its volumetric, area and elevation changes below 2400 m between 1919 and 1979. The data sources consist of maps produced using aerial and terrestrial photogrammetry in the years between 1919 and 1979. The maps were digitized and converted into raster digital elevation models (DEMs), the manipulation of which allowed values of surface and volumetric change to be calculated. These DEMs showed that between 1919 and 1979 the glacier lost 2.344 x 108m3 of volume and receded more than 1 km. Each of the source maps …

Reference Sediment Selection In The Lower Mississippi Delta, M. T. Moore, C. D. Milam, Jerry L. Farris

Journal of the Arkansas Academy of Science

Floodplain deposition has been a critical part in the evolution of Arkansas' Delta ecoregion, and because ofits high potential for such events, this region is highly enriched and extremely fertile. Historically, water quality in the area has been the subject ofscientific study, and as a result littlehas been published on the effects of underlying sediment with associated benthic communities. Sediment analysis is critical to many of the ongoing aquatic studies because ofits significance as both a habitat for benthic organisms and a sink for contaminants. Seven rivers and one creek within the Delta ecoregion were examined for water chemistry, sediment …

Relative Rates Of Sand Transport Through An Incipient Parabolic Dune At Pinery Provincial Park, Ontario (Ammophila Breviligulata, Calamovilfa Longifolia, Cakile Edentula, Juniperus Virginiana, Populus Deltoides), Sheri A. Longboat

Theses and Dissertations (Comprehensive)

Factors controlling the development, migration, and stability of an incipient parabolic dune in Pinery Provincial Park, Ontario were investigated in terms of grain size characteristics, rates of sediment transport, and local and regional winds. The parabolic dune, situated approximately 60 meters inland of Lake Huron, is dominated by sparsely scattered dune grass species of marram grass (Ammophila breviligulata), sand reed (Calamovilfa longifolia), and sea rocket (Cakile edentula). Small tree species of red cedar (Juniperus virginiana) and eastern cottonwood (Populus deltoides) emerge and increase in number beyond the parabolic dune. Mean grain sizes along a profile were coarsest on the beach …

Temporal And Spatial Patterns In Water Chemistry, Phytoplankton Biomass And Microcrustacea In Lake Joondalup And Beenyup Swamp, Western Australia, Kimberley Upton

Theses : Honours

Lake Joondalup is one of the largest remaining permanent lakes of the Swan Coastal Plain. Despite increasing urbanisation, it supports highly diverse terrestrial and riparian communities, and an abundant and diverse aquatic fauna. However, like other wetlands of the Swan Coastal Plain, Lake Joondalup is increasingly threatened by eutrophication and degradation. The aims of this study were to describe the patterns in selected physical, chemical parameters, microcrustacean abundance and biomass of Daphnia carinata in Beenyup Swamp and the adjacent sections of Lake Joondalup; to identify the likely factors determining the patterns of phytoplankton biomass in these wetlands; and to suggest …

Land Capability Assessment For The Wellington-Blackwood Survey, Peter J. Tille

Resource management technical reports

This report has been produced to provide more detail on the land capability assessments presented in the Wellington-Blackwood Land Resources Survey (Tille 1996). In that report, the land capability of each of the soil-landscape subsystems has been summarised with a brief description. Capability ratings are provided here for each of the map units (including subsystem phases) which appear on the two map sheets (Tille et al. 1996) accompanying the Wellington-Blackwood Land Resources Survey.

Glacial Deposits, Vol. 24, 1995-1996, Department Of Geography-Geology

Glacial Deposits

Newsletter of the Department of Geography-Geology

Upper Cretaceous Calcareous Nannofossil Biostratigraphy And Paleoceanography Of The Southern Ocean, David K. Watkins, Sherwood W. Wise Jr., James J. Popsichal, Jason Crux

Department of Earth and Atmospheric Sciences: Faculty Publications

Nannofossil data from the Naturaliste Plateau (DSDP Legs 26 & 28), Falkland Plateau (DSDP Legs 36 & 71), Maud Rise (ODP Leg 113), Northeast Georgia Rise (ODP Leg 114), and Kerguelen Plateau (ODP Leg 120) yield a set of consistent, reliable biohorizons that form the basis of a revised calcareous nannofossil zonation for the Southern Ocean Upper Cretaceous. Analysis of this zonation indicates significant changes in the circum-Antarctic climatic regime during the Campanian and Maastrichtian that foreshadow the more dramatic climatic shifts of the Palaeogene. Calcareous nannofossils from the Turonian through the Lower Campanian of the studied sections are characterized …

Groundwater-Level Changes In Nebraska, Predevelopment To Spring 1994, Mack Ann, Jim Weir, Jennifer Sharpe

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Data On Mineral Production In Nebraska, R. R. Burchett, D. Mohlman

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Polk County Test Hole Logs, Raymond R. Burchett, Frank A. Smith

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Resource News-Spring 1996

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

North Central Tablelands Hydrogeologic Summary From Domestic Well-Water Quality In Rural Nebraska, D C. Gosselin

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Rural Domestic Well-Water Quality In The Sand Hills, D C. Gosselin

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Regional Analysis Of Rural Domestic Well-Water Quality -- Platte River Valley, D. C. Gosselin, J. Headrick, X- H. Chen, S. E. Summerside

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Regional Analysis Of Rural Domestic Well-Water Quality -- South Central Plains, D. C. Gosselin, J. Headrick, X- H. Chen, S. E. Summerside

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Regional Analysis Of Rural Domestic Well-Water Quality -- Northern Panhandle Tablelands, D. C. Gosselin, J. Headrick, X- H. Chen, S. E. Summerside

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Regional Analysis Of Rural Domestic Well-Water Quality -- Southern Panhandle Tablelands, D. C. Gosselin, J. Headrick, X- H. Chen, S. E. Summerside

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Geology Along Selected Lincoln Bike Trails, R. K. Pabian

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Regional Hydrogeologic Summaries From Domestic Well-Water Quality In Rural Nebraska -- Sand Hills, D. C. Gosselin, J. Headrick, X- H. Chen, S. E. Summerside

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Regional Hydrogeologic Summaries From Domestic Well-Water Quality In Rural Nebraska -- Platte River Valley, D. C. Gosselin, J. Headrick, X- H. Chen, S. E. Summerside

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Regional Hydrogeologic Summaries From Domestic Well-Water Quality In Rural Nebraska -- Missouri River Lowlands, D. C. Gosselin, J. Headrick, X- H. Chen, S. E. Summerside

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Regional Hydrogeologic Summaries From Domestic Well-Water Quality In Rural Nebraska -- South Central Plains, D. C. Gosselin, J. Headrick, X- H. Chen, S. E. Summerside

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Regional Hydrogeologic Summaries From Domestic Well-Water Quality In Rural Nebraska -- Northern Panhandle Tablelands, D. C. Gosselin, J. Headrick, X-H. Chen, S. E. Summerside

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

Regional Hydrogeologic Summaries From Domestic Well-Water Quality In Rural Nebraska -- Southern Panhandle Tablelands, D. C. Gosselin

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.