Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Environmental Sciences (198)
- Natural Resources and Conservation (193)
- Water Resource Management (189)
- Natural Resources Management and Policy (186)
- Other Environmental Sciences (177)
-
- Life Sciences (17)
- Social and Behavioral Sciences (13)
- Environmental Indicators and Impact Assessment (7)
- Environmental Monitoring (7)
- Oceanography and Atmospheric Sciences and Meteorology (7)
- Animal Sciences (6)
- Ecology and Evolutionary Biology (6)
- Aquaculture and Fisheries (5)
- Climate (5)
- Geography (5)
- Biodiversity (4)
- Engineering (4)
- Plant Sciences (4)
- Public Affairs, Public Policy and Public Administration (4)
- Remote Sensing (4)
- Terrestrial and Aquatic Ecology (4)
- Forest Management (3)
- Forest Sciences (3)
- Fresh Water Studies (3)
- Other Earth Sciences (3)
- Population Biology (3)
- Statistics and Probability (3)
- Keyword
-
- Nebraska (21)
- Habitat (10)
- Drought (8)
- Agriculture (7)
- Conservation (7)
-
- Interactions (6)
- Reservoir (6)
- Damage (5)
- Ecology (5)
- Groundwater (5)
- Growth (5)
- Irrigation (5)
- Biology (4)
- Birds (4)
- Fisheries (4)
- Freshwater (4)
- Movement (4)
- Remote sensing (4)
- Survival (4)
- Water quality (4)
- Advection (3)
- Alfalfa (3)
- Avian (3)
- Benthic (3)
- Climate (3)
- Cyanobacteria (3)
- Distribution (3)
- Elk (3)
- Fish (3)
- Interaction (3)
Articles 91 - 120 of 201
Full-Text Articles in Hydrology
Interactions Of Zoo Plankton And Phytoplankton With Cyanobacteria, Rebecca J. Alexander
Interactions Of Zoo Plankton And Phytoplankton With Cyanobacteria, Rebecca J. Alexander
School of Natural Resources: Dissertations, Theses, and Student Research
Cyanobacteria are a major concern in Nebraska reservoirs and are capable of producing toxins that can cause skin irritations and gastrointestinal problems, as well as affect the nervous system. It is important to determine the mechanisms that can cause cyanobacteria blooms due to the effect they can have on human health. The interaction of zooplankton and other phytoplankton groups with cyanobacteria is important because there is a biological component in surface waters that should be taken into consideration along with the physical and chemical parameters that have been noted to promote cyanobacteria. For example, zooplankton have the ability to alter …
Interactions Of Zooplankton And Phytoplankton With Cyanobacteria, Rebecca Alexander
Interactions Of Zooplankton And Phytoplankton With Cyanobacteria, Rebecca Alexander
School of Natural Resources: Dissertations, Theses, and Student Research
Cyanobacteria are a major concern in Nebraska reservoirs and are capable of producing toxins that can cause skin irritations and gastrointestinal problems, as well as affect the nervous system. It is important to determine the mechanisms that can cause cyanobacteria blooms due to the effect they can have on human health. The interaction of zooplankton and other phytoplankton groups with cyanobacteria is important because there is a biological component in surface waters that should be taken into consideration along with the physical and chemical parameters that have been noted to promote cyanobacteria. For example, zooplankton have the ability to alter …
Impacts Of Climate Change On The Surface Water Balance Of The Central United States, 1984–2007, Bo Dong
Impacts Of Climate Change On The Surface Water Balance Of The Central United States, 1984–2007, Bo Dong
School of Natural Resources: Dissertations, Theses, and Student Research
The climate system and the hydrologic cycle are strongly connected with each other. Understanding the interactions between these two systems is important, since variations in climate can trigger extensive changes in the hydrologic cycle, with significant impacts on agriculture, ecosystems, and society. Observations over the central U.S. in recent decades show numerous changes in climatic variables. This includes decreases in cloud cover and wind speed, increases in air temperature, and seasonal shifts in precipitation rate and rain/snow fraction. To assess the impacts of these variations in climate on the regional water cycle, a terrestrial ecosystem/land surface hydrologic model (Agro-IBIS) is …
Understanding Of The Hydrologic Connections Between Wide-Channel And Adjacent Aquifers Using Numerical And Field Techniques, Cheng Cheng
School of Natural Resources: Dissertations, Theses, and Student Research
Streambed sedimentary structure plays a vital role in controlling the interactions between surface water and groundwater. In the study, three rivers -the Big Blue River, the Little Blue River, and the lower reach of the Platte River in Nebraska were chosen to characterize the shallow streambed for the two types of rivers (braided and meandering rivers) and investigated the variations of the streambed electrical and hydraulic conductivities with depth. In-situ and laboratory permeameter tests were conducted to determine streambed hydraulic conductivity up to 20 m below the channel surface in the three rivers. Additionally, the electrical conductivity logs were obtained …
Quantifying Evapotranspiration And Water Table Interactions In Regions Of Shallow Groundwater: Sensitivity To Soil Properties, Vegetation, And Climate Variability, Mehmet E. Soylu
School of Natural Resources: Dissertations, Theses, and Student Research
Evapotranspiration (ET) is an important component of the water and energy balance, yet it is also one of the most challenging components to estimate. There has been great effort to understand the nature of controlling mechanisms and interactions between ET and other earth system processes. The controlling factors of ET can be grouped into two broad categories – namely moisture availability and energy availability (e.g., solar radiation). Soil moisture is a key factor that most of the land surface hydrologic processes are dependent on. While plant water use is mainly controlled by radiation, temperature is another key factor for ET …
Hydrochemistry Of Wetlands Along The Platte River Near Ashland, Nebraska, Carrie L. Wiese
Hydrochemistry Of Wetlands Along The Platte River Near Ashland, Nebraska, Carrie L. Wiese
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
A Spatial Analysis Of Anthropogenically Derived And Naturally Occurring Environmental Controls On Corn-Based Ethanol Production In Nebraska, Nathan Charles Healey
A Spatial Analysis Of Anthropogenically Derived And Naturally Occurring Environmental Controls On Corn-Based Ethanol Production In Nebraska, Nathan Charles Healey
School of Natural Resources: Dissertations, Theses, and Student Research
Transportation fuels are an integral part of political, economic, social, and environmental arenas. Traditionally, fossil fuels have been utilized most heavily due to their abundance and economic value. Currently, social and political concerns about harmful emissions (greenhouse gases) from fossil fuel combustion have enhanced interest in alternative fuels that do not have the same environmental consequence. Numerous alternative fuels are produced globally including methanol, biodiesel, hydrogen cells, and ethanol (ethyl alcohol). In America, ethanol is produced from com due to the existence of the "Com Belt" and abundant corn production. Understanding the capacity for America to sustain expansion of alternative …
Impacts Of Human Physical Disturbance Of Benthic Communities In Tributaries Of The Niobrara National Scenic River, Kimberly D. Laing
Impacts Of Human Physical Disturbance Of Benthic Communities In Tributaries Of The Niobrara National Scenic River, Kimberly D. Laing
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
Preferences For Rural Amenities In Lancaster County, K. Koehler-Cole
Preferences For Rural Amenities In Lancaster County, K. Koehler-Cole
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
The Influence Of Grazing Systems On Grassland Bird Density, Productivity, And Species Richness On Private Rangeland In The Nebraska Sandhills, Silka Lori Finkbeiner Kempema
The Influence Of Grazing Systems On Grassland Bird Density, Productivity, And Species Richness On Private Rangeland In The Nebraska Sandhills, Silka Lori Finkbeiner Kempema
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
Conservation And Beneficial Functions Of Grassland Birds In Agroecosystems, Andrea Victoria Hanson
Conservation And Beneficial Functions Of Grassland Birds In Agroecosystems, Andrea Victoria Hanson
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
Factors Affecting Songbird Nest Survival And Brood Parasitism In The Rainwater Basin Region Of Nebraska, Max Post Van Der Burg
Factors Affecting Songbird Nest Survival And Brood Parasitism In The Rainwater Basin Region Of Nebraska, Max Post Van Der Burg
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
Mesopredator Movement, Abundance, And Habitat Selection In The Rainwater Basins Of Nebraska, Christina J. Kocer
Mesopredator Movement, Abundance, And Habitat Selection In The Rainwater Basins Of Nebraska, Christina J. Kocer
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
Efficacy Of Offshore Breakwater Structures In A Eutrophic Midwestern Reservoir, Larry D. Pape
Efficacy Of Offshore Breakwater Structures In A Eutrophic Midwestern Reservoir, Larry D. Pape
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
Leaf And Wood Utilization In The Middle Missouri River, Kim Rager
Leaf And Wood Utilization In The Middle Missouri River, Kim Rager
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
Applications Of Remote Sensing And Gis To The Studies Of Groundwater–Lake Interactions In The Nebraska Sandhills, Evgueni N. Tcherepanov
Applications Of Remote Sensing And Gis To The Studies Of Groundwater–Lake Interactions In The Nebraska Sandhills, Evgueni N. Tcherepanov
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
Movements And Habitat Use By Shovelnose And Pallid Sturgeon In The Lower Platte River, Nebraska, Benjamin D. Swigle
Movements And Habitat Use By Shovelnose And Pallid Sturgeon In The Lower Platte River, Nebraska, Benjamin D. Swigle
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
Democratizing Science, Management, And Public Policy In The Missouri River Ecosystem: A Pilot Study Of Agricultural Producers' Amenability To Adaptive And Collaborative Management, Meghan Sittler
School of Natural Resources: Dissertations, Theses, and Student Research
Agricultural stakeholder involvement is central to the National Academy of Sciences' (NAS) National Research Council (NRC)(2002) recommendation for development and implementation of adaptive, ecosystem management principles, as well as the definition of a new management regime for the Missouri River. This document represents a pilot study of fifteen agricultural producers in three counties, Atchison County, Missouri, Fremont County, Iowa, and Otoe County, Nebraska, who were contacted via telephone and completed structured interviews. The interview questions centered upon the producers' relationship to the river, perceptions of the current management of the river, and willingness to support and participate in a proposed …
Analysis Of Integrated Farming Systems In Eastern Nebraska, Lori A. Hoagland
Analysis Of Integrated Farming Systems In Eastern Nebraska, Lori A. Hoagland
School of Natural Resources: Dissertations, Theses, and Student Research
Agroecosystems in the U.S. are beset with social, ecological and environmental problems as large industrial farming methods are edging out small family-sized farms and replacing ecological services provided by biodiversity with synthetic inputs and practices. While many of the benefits of smaller diversified or integrated farming systems are well known, farm producers need a concrete model that shows how integration is possible and with what crops. The objective of this study was to investigate some of these supplemental farm activities, and identify and evaluate whether they were compatible given the time and resource constraints of a typical eastern Nebraska farm. …
Effectiveness Of Frightening Devices For Reducing Deer Damage In Cornfields, Jason M. Gilsdorf
Effectiveness Of Frightening Devices For Reducing Deer Damage In Cornfields, Jason M. Gilsdorf
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
A Regional Gis-Based Analysis Of Elk Habitat Suitability In Northeast Nebraska, J W. Fisher
A Regional Gis-Based Analysis Of Elk Habitat Suitability In Northeast Nebraska, J W. Fisher
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
Influence Of Light And Nutrients On Atrazine Toxicity To Freshwater Algae, Crystal J. Hansen
Influence Of Light And Nutrients On Atrazine Toxicity To Freshwater Algae, Crystal J. Hansen
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
Effects Of Binary Combinations Of Herbicides On Freshwater Algae, Jill K. Taylor
Effects Of Binary Combinations Of Herbicides On Freshwater Algae, Jill K. Taylor
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
Movement Of Rainbow And Brown Trout In Relation To Water Quality And Food Availability In Lake Ogallala, Nebraska, Corey M. Huxoll
Movement Of Rainbow And Brown Trout In Relation To Water Quality And Food Availability In Lake Ogallala, Nebraska, Corey M. Huxoll
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
Effects Of Woody Cover In The Landscaping On Riparian Avifauna And A Preliminary Nesting Assessment, Micah W. Perkins
Effects Of Woody Cover In The Landscaping On Riparian Avifauna And A Preliminary Nesting Assessment, Micah W. Perkins
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
Movements And Habitat Use By Hatchery-Reared Pallid Sturgeon In The Lower Platte River, Nebraska, Vaughn A. Snook
Movements And Habitat Use By Hatchery-Reared Pallid Sturgeon In The Lower Platte River, Nebraska, Vaughn A. Snook
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
Ecology Of Elk In The Pine Ridge Region Of Northwestern Nebraska: Seasonal Distribution, Characteristics Of Wintering Sites, And Herd Health, Michael A. Cover
Ecology Of Elk In The Pine Ridge Region Of Northwestern Nebraska: Seasonal Distribution, Characteristics Of Wintering Sites, And Herd Health, Michael A. Cover
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
Changes In Primary Production Of Pawnee Reservoir As A Result Of Reservoir Aging, Kristopher A. Fischer
Changes In Primary Production Of Pawnee Reservoir As A Result Of Reservoir Aging, Kristopher A. Fischer
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
Investigating Ground And Surface Water In The Republican River Basin Of Nebraska Using Water Chemistry And Environmental Isotopes, Jennifer J. Schellpeper
Investigating Ground And Surface Water In The Republican River Basin Of Nebraska Using Water Chemistry And Environmental Isotopes, Jennifer J. Schellpeper
School of Natural Resources: Dissertations, Theses, and Student Research
Recent legal battles concerning water use initiated an investigation of the stream/aquifer relationships in the Republican River Basin located in southwest Nebraska. Ground and surface water was analyzed for tritium, deuterium, 18O, and major ions. Temperature, pH, conductivity and alkalinity were determined on-site. Samples were collected during 1997 and 1998 from irrigation wells throughout the entire basin. Localized interactions between groundwater and surface water were examined during twenty-four hour pump tests performed on the irrigation wells screened in the alluvium along the river valley and its tributaries. These data show there are differences between the ground and surface waters …
Ecology Of Elk In Northwestern Nebraska: Demographics, Effects Of Human Disturbance, And Characteristics Of Calving Habitat, Bruce A. Stillings
Ecology Of Elk In Northwestern Nebraska: Demographics, Effects Of Human Disturbance, And Characteristics Of Calving Habitat, Bruce A. Stillings
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.