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School of Natural Resources: Dissertations, Theses, and Student Research

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Articles 181 - 210 of 226

Full-Text Articles in Other Environmental Sciences

Habitat Use And Diet Analysis Of Breeding Common Barn Owls In Western Nebraska, Joseph A. Gubanyi M.S. Apr 1989

Habitat Use And Diet Analysis Of Breeding Common Barn Owls In Western Nebraska, Joseph A. Gubanyi M.S.

School of Natural Resources: Dissertations, Theses, and Student Research

I studied barn owl (Tyto alba) breeding biology in western Nebraska 1984-1986. I had greatest success capturing males (56% success) at night using trap doors at nest sites and females (91 % success) using hoop nets at nest sites during the day. Barn owls removed 16 of 23 tail-mounted radios. Eight birds were radio-tracked for 7-14.5 hours. The mean foraging range was 198 ha (32- 299 ha, n = 8) with < 1 % overlap among birds from adjacent nest sites. Field-tested telemetry error was high (mean displacements of radio-locations for 2 birds were 208 and 241 m). I found no relationship between percent cover in foraging habitat and reproductive success. I identified 10,140 prey items from 15 nest sites and found both annual and seasonal variation in barn owl diets. Microtus ochrogaster occurred most frequently (32.7%) and increased in the diet from 17.6 to 27.2 to 43.5% 1984-1986. M. ochrogaster and Perognathus hispidus annual frequencies were …


Fox Squirrel Interaction With Electrical Transformers, J. Christopher Hamilton Oct 1987

Fox Squirrel Interaction With Electrical Transformers, J. Christopher Hamilton

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


Fox Squirrel Interaction With Electrical Transformers, J. Christipher Hamilton Oct 1987

Fox Squirrel Interaction With Electrical Transformers, J. Christipher Hamilton

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


A Field Test Of Habitat Evaluation Procedures For Creek Chub (Semotilus Atromaculatus) And Channel Catfish (Ictalurus Punctatus), Donald W. Zaroban Aug 1987

A Field Test Of Habitat Evaluation Procedures For Creek Chub (Semotilus Atromaculatus) And Channel Catfish (Ictalurus Punctatus), Donald W. Zaroban

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


A Preliminary Study Of The Hydrogeology Of The Dakota Formation In Douglas, Sarpy And Washington Counties, Eastern Nebraska, Thomas Mark O'Connor Aug 1987

A Preliminary Study Of The Hydrogeology Of The Dakota Formation In Douglas, Sarpy And Washington Counties, Eastern Nebraska, Thomas Mark O'Connor

School of Natural Resources: Dissertations, Theses, and Student Research

This study provides preliminary information on the hydrogeology of the Dakota Formation within a 1,000 square-mile area in eastern Nebraska. Isopach maps of the Dakota Formation and individual sand and gravel beds were constructed using a computer contouring program. Hydraulic conductivity values for water-bearing sand beds in the Dakota were estimated using the equation for calculating the specific capacity of wells and results from a grain-size analysis. Concentrations of major dissolved species were determined for samples collected from twenty five wells. The Dakota Formation is characterized by an increase in thickkness and an increase in percentage of clay versus sand …


Effect Of Shelterbelts On Growth, Yield, And Quality Of Alfalfa (Medicago Sativa L.), Thomas G. Hans May 1987

Effect Of Shelterbelts On Growth, Yield, And Quality Of Alfalfa (Medicago Sativa L.), Thomas G. Hans

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


Prairie Dog Population Growth: Relationships To Population Density, Habitat, And Livestock Grazing Management, Kelly A. Cable May 1987

Prairie Dog Population Growth: Relationships To Population Density, Habitat, And Livestock Grazing Management, Kelly A. Cable

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


Effects Of Sediment Addition On The Drift Of Aquatic Macroinvertebrates In Nine Mile Creek, Nebraska, Laurence Angle May 1987

Effects Of Sediment Addition On The Drift Of Aquatic Macroinvertebrates In Nine Mile Creek, Nebraska, Laurence Angle

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


A Test Of Habitat Evaluation Models Using Avian Densities, Jeremy B. Cable Mar 1987

A Test Of Habitat Evaluation Models Using Avian Densities, Jeremy B. Cable

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


Effect Of Pre-Burn Artificial Litter And Prescribed Burning On Smooth Brome (Bromus Inermis Leyss), Patricia R. Boehner Aug 1986

Effect Of Pre-Burn Artificial Litter And Prescribed Burning On Smooth Brome (Bromus Inermis Leyss), Patricia R. Boehner

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


Improving Nebraska's Near-Real Time Weather-Based Products Through User Interaction, Steven J. Meyer Jul 1986

Improving Nebraska's Near-Real Time Weather-Based Products Through User Interaction, Steven J. Meyer

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


The Population Biology Of Oak Middle Creek Structure 58-B After An Experimental Stocking With Adult Fish: A Three Year Evaluation, Donn A. Rodekohr Jun 1986

The Population Biology Of Oak Middle Creek Structure 58-B After An Experimental Stocking With Adult Fish: A Three Year Evaluation, Donn A. Rodekohr

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


Environmental And Physiological Effects On Water Use Of Cereal Crops, Joon Kim Mar 1986

Environmental And Physiological Effects On Water Use Of Cereal Crops, Joon Kim

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


Interspecific Interactions Of Green Sunfish (Lepomis Cyanellus) And (Creek Chub (Semotilus Atromaculatus) In Small Streams In Southeast Nebraska, Steve L. Schleiger Mar 1986

Interspecific Interactions Of Green Sunfish (Lepomis Cyanellus) And (Creek Chub (Semotilus Atromaculatus) In Small Streams In Southeast Nebraska, Steve L. Schleiger

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


Development Of Oriented Lakes In The Eastern Rainbasin Region Of South Central Nebraska, James P. Krueger Jan 1986

Development Of Oriented Lakes In The Eastern Rainbasin Region Of South Central Nebraska, James P. Krueger

School of Natural Resources: Dissertations, Theses, and Student Research

The Eastern Rainbasin region is located on a relatively flat-lying, loess-covered plain. The gently sloping land surface is poorly drained and in places local drainage is toward basins which lack external drainage. In the spring, excell precipitation collects in these basins, forming small lakes and marshes. It is these ephemeral lakes that give the region its name.


Thiram And Methiocarb As Deer Mouse Repellents And Agents For Conditioned Aversion, Bobbi A. Holm Dec 1985

Thiram And Methiocarb As Deer Mouse Repellents And Agents For Conditioned Aversion, Bobbi A. Holm

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


Changes In Photosynthesis Rate In Pinus Sylvestris L. And Pinus Banksiana Lamb Seedlings Subjected To Drought Stress, George A. Riggs Jr. May 1985

Changes In Photosynthesis Rate In Pinus Sylvestris L. And Pinus Banksiana Lamb Seedlings Subjected To Drought Stress, George A. Riggs Jr.

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


Small Mammal Populations And Rodent Damage In Nebraska No-Tillage Crop Fields, Kent E. Holm Dec 1984

Small Mammal Populations And Rodent Damage In Nebraska No-Tillage Crop Fields, Kent E. Holm

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


House Mouse Populations And Their Damage To Common Building Insulations, Daryl D. Fisher Dec 1984

House Mouse Populations And Their Damage To Common Building Insulations, Daryl D. Fisher

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


A Study Of The Crayfish Orconectes Immunis In An Intermittent Nebraska Stream, John J. Shadle Dec 1984

A Study Of The Crayfish Orconectes Immunis In An Intermittent Nebraska Stream, John J. Shadle

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


Effects Of The Plains Pocket Gopher (Geomys Bursarius) On Hay Meadows And Irrigated Alfalfa In The Nebraska Sandhills, Patrick J. Hegarty May 1984

Effects Of The Plains Pocket Gopher (Geomys Bursarius) On Hay Meadows And Irrigated Alfalfa In The Nebraska Sandhills, Patrick J. Hegarty

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


Vital Characteristics Of The Black-Tailed Jack Rabbit In East-Central Nebraska, Rockford G. Plettner May 1984

Vital Characteristics Of The Black-Tailed Jack Rabbit In East-Central Nebraska, Rockford G. Plettner

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


Methiocarb And Thiram As Thirteen-Lined Ground Squirrel Repellents In Newly Planted Corn, Ann E. Koehler Aug 1983

Methiocarb And Thiram As Thirteen-Lined Ground Squirrel Repellents In Newly Planted Corn, Ann E. Koehler

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


Turbulent Exchange Of Carbon Dioxide, Water Vapor, Heat And Momentum Over Crop Surfaces, Dean E. Anderson Jan 1983

Turbulent Exchange Of Carbon Dioxide, Water Vapor, Heat And Momentum Over Crop Surfaces, Dean E. Anderson

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


Variation Of Whole Body Components As An Indicator Of Habitat Quality In Geomys Bursarius And Peromyscus Maniculatus, Joseph W. Nietfeldt Dec 1982

Variation Of Whole Body Components As An Indicator Of Habitat Quality In Geomys Bursarius And Peromyscus Maniculatus, Joseph W. Nietfeldt

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


Mass And Energy Exchanges Of Soybeans: Microclimate–Plant Architectural Interactions, Dennis D. Baldocchi Nov 1982

Mass And Energy Exchanges Of Soybeans: Microclimate–Plant Architectural Interactions, Dennis D. Baldocchi

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


Irrigation Scheduling Of Corn Utilizing Infrared Thermometry, Kirk L. Clawson Jul 1980

Irrigation Scheduling Of Corn Utilizing Infrared Thermometry, Kirk L. Clawson

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


Distributional And Dimensional Patterns Of Muskrat Burrows, James G. Bruner Jul 1979

Distributional And Dimensional Patterns Of Muskrat Burrows, James G. Bruner

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


Environmental And Physiological Effects On The Carbon Exchange Rate And Water Use Efficiency Of Alfalfa, Dennis D. Baldocchi Jul 1979

Environmental And Physiological Effects On The Carbon Exchange Rate And Water Use Efficiency Of Alfalfa, Dennis D. Baldocchi

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


Cenozoic Geology Of The North Platte River Valley, Morrill And Garden Counties, Nebraska, James B. Swinehart Jan 1979

Cenozoic Geology Of The North Platte River Valley, Morrill And Garden Counties, Nebraska, James B. Swinehart

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.