Open Access. Powered by Scholars. Published by Universities.®

Physical Sciences and Mathematics Commons

Open Access. Powered by Scholars. Published by Universities.®

Nebraska

Discipline
Institution
Publication Year
Publication
Publication Type

Articles 1 - 30 of 701

Full-Text Articles in Physical Sciences and Mathematics

Areas In Nebraska Of Subirrigated Vegetation, John Elder Jan 9999

Areas In Nebraska Of Subirrigated Vegetation, John Elder

Conservation and Survey Division

No abstract provided.


Nebraska Natural Resources District Boundaries, Nebraska Natural Resources Commission Jan 9999

Nebraska Natural Resources District Boundaries, Nebraska Natural Resources Commission

Conservation and Survey Division

No abstract provided.


Nebraska Map Of Counties, Conservation Survey Division Jan 9999

Nebraska Map Of Counties, Conservation Survey Division

Conservation and Survey Division

No abstract provided.


Nebraska Groundwater In Storage, Conservation Survey Division Jan 9999

Nebraska Groundwater In Storage, Conservation Survey Division

Conservation and Survey Division

No abstract provided.


Generalized Soil Map Of Nebraska Jan 9999

Generalized Soil Map Of Nebraska

Conservation and Survey Division

No abstract provided.


Report Of The Nebraska Conservation And Soil Survey, G. E. Condra Jan 9999

Report Of The Nebraska Conservation And Soil Survey, G. E. Condra

Conservation and Survey Division

No abstract provided.


Precambrian Rock Descriptions From Deep Wells In Nebraska, E. Liedecke Jan 9999

Precambrian Rock Descriptions From Deep Wells In Nebraska, E. Liedecke

Conservation and Survey Division

No abstract provided.


Groundwater Regions In Nebraska Jan 9999

Groundwater Regions In Nebraska

Conservation and Survey Division

No abstract provided.


Nebraska Natural Resource District Boundaries Jan 9999

Nebraska Natural Resource District Boundaries

Conservation and Survey Division

No abstract provided.


Topographic Regions Of Nebraska, G. E. Condra Jan 9999

Topographic Regions Of Nebraska, G. E. Condra

Conservation and Survey Division

No abstract provided.


Distribution And Thickness Of Glacial Till In Nebraska. Jan 9999

Distribution And Thickness Of Glacial Till In Nebraska.

Conservation and Survey Division

No abstract provided.


Dissolved Solids Sampling Sites And Zones Of Concentration Jan 9999

Dissolved Solids Sampling Sites And Zones Of Concentration

Conservation and Survey Division

No abstract provided.


Holdrege: Nebraska's State Soil Jan 9999

Holdrege: Nebraska's State Soil

Conservation and Survey Division

No abstract provided.


The Possibility Of A Land Bridge Across Nebraska In Mississippian Time, E. C. Reed May 2022

The Possibility Of A Land Bridge Across Nebraska In Mississippian Time, E. C. Reed

Papers in Natural Resources

No abstract provided.


Multi-Criteria Evaluation Model For Classifying Marginal Cropland In Nebraska Using Historical Crop Yield And Biophysical Characteristics, Andrew Laws May 2022

Multi-Criteria Evaluation Model For Classifying Marginal Cropland In Nebraska Using Historical Crop Yield And Biophysical Characteristics, Andrew Laws

Dissertations & Theses in Natural Resources

Marginal cropland is suboptimal due to historically low and variable productivity and limiting biophysical characteristics. To support future agricultural management and policy decisions in Nebraska, U.S.A, it is important to understand where cropland is marginal for its two most economically important crops: corn (Zea mays) and soybean (Glycine max). As corn and soybean are frequently planted in a crop rotation, it is important to consider if there is a relationship with cropland marginality. Based on the current literature, there exists a need for a flexible yet robust methodology for identifying marginal land at different scales, which takes advantage ...


Nebraska Statewide Groundwater-Level Monitoring Report 2021, Aaron R. Young, Mark E. Burbach, Leslie M. Howard, Sue Olafsen Lackey, Robert Matthew Joeckel Mar 2022

Nebraska Statewide Groundwater-Level Monitoring Report 2021, Aaron R. Young, Mark E. Burbach, Leslie M. Howard, Sue Olafsen Lackey, Robert Matthew Joeckel

Conservation and Survey Division

This report is a synthesis of groundwater-level monitoring programs in Nebraska. It is a continuation of the series of annual reports and maps produced by the Conservation and Survey Division (CSD) of the University of Nebraska in cooperation with the U.S. Geological Survey (USGS) since the 1950s. Groundwater-level monitoring began in Nebraska in 1930 in an effort to survey the state’s groundwater resources and to observe changes in its availability on a continuing basis. The CSD and USGS cooperatively developed, maintained, and operated an observation-well network throughout the state. These two agencies were responsible for collecting and archiving ...


Feasibility Discussion Of Potential Carbon Offsetting Options For Nebraska, Andrew Mwape Nov 2021

Feasibility Discussion Of Potential Carbon Offsetting Options For Nebraska, Andrew Mwape

Papers in Natural Resources

Conclusion

Highlighting the advantages and disadvantages of carbon offsetting options in the context of the state of Nebraska, this discussion shows that the choice and decisions about which option is better than the other depends on the interests at play and expected outcomes of the participation in carbon markets. However, irrespective of the motive to engage in emission reduction projects for carbon marketing, factors such as cost, and project efficiency can never be overlooked. Given the options discussed in this report, Nebraska has a lot of potential for carbon offsetting or emission reduction projects that would not only reduce and ...


The Sandhill Crane State: A Naturalist’S Guide To Nebraska, Paul Johnsgard Oct 2021

The Sandhill Crane State: A Naturalist’S Guide To Nebraska, Paul Johnsgard

Zea E-Books Collection

This book includes the locations, descriptions, and points of biological, historical, geological, or paleontological interest of nearly 350 sites in Nebraska, most of which are free to access. Its 53,000 words include accounts of 9 state historical parks, 8 state parks, 2 national forests, 2 national monuments, and 7 national wildlife refuges as well as 181 wildlife management areas, 56 waterfowl production areas, and 54 state recreation areas. It also includes 48 state and county maps, 18 drawings, 33 photographs, and nearly 200 literature citations.

doi: 10.32873/unl.dc.zea.1305


Geology And Hydrogeology Of Northeastern Nebraska: Geology, Water Management And Geological Hazards, Nebraska Geological Society Field Trip 2021, Robert F. Diffendal, Sue Olafsen Lackey, Douglas R. Hallum Oct 2021

Geology And Hydrogeology Of Northeastern Nebraska: Geology, Water Management And Geological Hazards, Nebraska Geological Society Field Trip 2021, Robert F. Diffendal, Sue Olafsen Lackey, Douglas R. Hallum

Conservation and Survey Division

The 2021 Nebraska Geological Society field trip will provide an overview of the geology and hydrogeology of northeast Nebraska, the groundwater quality and quantity issues unique to the region, water management issues and decision-making, and ongoing work relating to water quality and geologic (hydrostratigraphic) framework, along the lower Niobrara and Missouri rivers Between Spencer Dam and Homer Nebraska. This program will be comprised of an auto tour with multiple stops on Saturday October 16 through Monday October 18 as illustrated in Map 1. The tour will begin with an examination of the Spencer Dam site and several locations in and ...


Holocene Records Of Nebraska Mammals, Hugh H. Genoways Mar 2021

Holocene Records Of Nebraska Mammals, Hugh H. Genoways

Zea E-Books Collection

A survey of the archeological and paleontological literature allowed a compilation of Holocene records of mammals in Nebraska. This survey identified Holocene records from 338 sites in 62 of the 93 Nebraska counties. These counties were located throughout state, but there was a concentration of sites in southwestern Nebraska where there were 27 fossil sites in Frontier County and 22 in Harlan County. Fossils sites were underrepresented in the Sand Hills region. Records of fossil mammals covered the entire Holocene period from 13,000 years ago until AD 1850. A minimum of 57 species (with eight additional species potentially present ...


Nebraska Statewide Groundwater-Level Monitoring Report 2020, Aaron R. Young, Mark E. Burbach, Leslie M. Howard, Sue Olafsen Lackey, Robert Matthew Joeckel Feb 2021

Nebraska Statewide Groundwater-Level Monitoring Report 2020, Aaron R. Young, Mark E. Burbach, Leslie M. Howard, Sue Olafsen Lackey, Robert Matthew Joeckel

Conservation and Survey Division

The term “groundwater” has come to be all but synonymous with Nebraska. Nearly three-quarters of the total volume of the High Plains Aquifer lies beneath the state. Groundwater maintains our streams, our ecosystems, our people, and our vitally important agricultural economy. Nebraska’s total groundwater resource is vast, yet it is also vulnerable to natural and anthropogenic changes, necessitating a long-term commitment to wise management through informed decision-making. Monitoring, studying, and reporting form the essential basis for such management and, ultimately, for meeting the myriad challenges presented by change.


Whooping Crane (Grus Americana) Family Consumes A Diversity Of Aquatic Vertebrates During Fall Migration Stopover At The Platte River, Nebraska, M. Forsberg Jan 2021

Whooping Crane (Grus Americana) Family Consumes A Diversity Of Aquatic Vertebrates During Fall Migration Stopover At The Platte River, Nebraska, M. Forsberg

Papers in Natural Resources

No abstract provided.


Impact Of Bank Stabilization Structures On Upstream And Downstream Bank Mobilization At Cedar River, Nebraska, M. Russell, A. Mittelstet, R. M. Joeckel, J. Korus, C. Castro Bolinaga Jan 2021

Impact Of Bank Stabilization Structures On Upstream And Downstream Bank Mobilization At Cedar River, Nebraska, M. Russell, A. Mittelstet, R. M. Joeckel, J. Korus, C. Castro Bolinaga

Papers in Natural Resources

No abstract provided.


The Birds Of The Nebraska Sandhills, Paul A. Johnsgard, Josef Kren Nov 2020

The Birds Of The Nebraska Sandhills, Paul A. Johnsgard, Josef Kren

Zea E-Books Collection

This book provides basic information on all the species of birds that have been reliably reported from the Nebraska Sandhills region as of 2020. They include 46 permanent residents, 125 summer breeders, 125 migrants, and 102 rare or accidental species, totaling 398 species. Information on status, migration, and habitats is provided for all but the very rare and accidental species. There are also descriptions of 46 refuges, preserves, and other public-access natural areas in the region and seven suggested birding routes. The text contains more than 90,000 words and over 250 literature references along with more than 20 drawings ...


Spatial Ecology And Resource Selection Of Bighorn Sheep (Ovis Canadensis) Ewes In A Prairie Badlands Population, Erin Wood Jul 2020

Spatial Ecology And Resource Selection Of Bighorn Sheep (Ovis Canadensis) Ewes In A Prairie Badlands Population, Erin Wood

Dissertations & Theses in Natural Resources

The basic spatial ecology and habitat relationships of female bighorn sheep in Nebraska are poorly understood. Establishing seasonal patterns of space use and resource selection for this population at the margin of their historical and current range addresses a key knowledge gap and provides important baseline information for ongoing conservation efforts in Nebraska. We deployed GPS radio-collars on 56 adult ewes in western Nebraska to quantify seasonal space use, movements, and resource selection of ewes. To investigate spatial ecology, we quantified movements of ewes and the factors that influence home range size, seasonal use, and spatial stability across seasons. Home ...


Spatial And Temporal Patterns Of Bat Activity In A Southeast Nebraska Agricultural Landscape, Christopher Fill Jul 2020

Spatial And Temporal Patterns Of Bat Activity In A Southeast Nebraska Agricultural Landscape, Christopher Fill

Dissertations & Theses in Natural Resources

Intensive agriculture is associated with biodiversity loss and species decline. Yet wild species, such as bats, may provide critical ecosystem services to agriculture, even in transformed landscapes. In the United States, bats have been estimated to save the agricultural industry billions of dollars per year. However, white-nose syndrome and habitat loss have led to the decline of many bat species in North America, including the federally threatened northern long-eared bat, Myotis septentrionalis.

To better evaluate the effectiveness of these pest-controlling services, and to increase understanding of bat foraging behavior in these extreme landscapes, I deployed 11 grids of 24 detectors ...


Impacts Of Human Recreation On Nutrient Availability And Periphyton Abundance On The Niobrara River, Matthew Chen, Jessica Corman, Sydney Kimnach, Kayla Vondracek Apr 2020

Impacts Of Human Recreation On Nutrient Availability And Periphyton Abundance On The Niobrara River, Matthew Chen, Jessica Corman, Sydney Kimnach, Kayla Vondracek

UCARE Research Products

In freshwater ecosystems, eutrophication can create many problems. Excess nutrients, like nitrogen or phosphorus, promote algal or cyanobacterial growth. This growth also leads to increased organic matter production and decomposition, a process that can reduce oxygen concentration in the water. When this happens, species diversity declines, transparency of the water declines, and anoxia may lead to fish kills . Of particular concern is the possibility of cyanobacteria blooms that create compounds toxic for humans. Many of the waters across Nebraska receive excessive nutrients from human activities, largely related to agriculture (Dickey 1982). However, there is one river, the Niobrara River, that ...


Nebraska Statewide Groundwater-Level Monitoring Report 2019, Aaron R. Young, Mark E. Burbach, Leslie M. Howard, Sue Olafsen Lackey, Robert Matthew Joeckel Apr 2020

Nebraska Statewide Groundwater-Level Monitoring Report 2019, Aaron R. Young, Mark E. Burbach, Leslie M. Howard, Sue Olafsen Lackey, Robert Matthew Joeckel

Conservation and Survey Division

The term “groundwater” has come to be all but synonymous with Nebraska. Nearly three-quarters of the total volume of the High Plains Aquifer lies beneath the State. Groundwater maintains our streams, our ecosystems, our people, and our vitally important agricultural economy. Nebraska’s total groundwater resource is vast, yet it is also vulnerable to natural and anthropogenic changes, necessitating a long-term commitment to wise management through informed decision making. Monitoring, studying, and reporting form the essential basis for such management and, ultimately, for meeting the myriad challenges presented by change.

The personnel of the Conservation and Survey Division (CSD) are ...


Problematic Plant Monitoring In Homestead National Monument Of America, 2006–2017, Craig C. Young Mar 2020

Problematic Plant Monitoring In Homestead National Monument Of America, 2006–2017, Craig C. Young

U.S. National Park Service Publications and Papers

Abstract

Managers are challenged with the impact of problematic plants, including exotic, invasive, and pest plant species. Information on the abundance, distribution, and location of these plants is essential for developing risk-based approaches to managing these species. Based on surveys conducted in 2006, 2009, 2013, and 2017, Heartland Inventory and Monitoring Network staff and contractors identified a cumulative total of 20 potentially problematic plant species in Homestead National Monument of America (NMA). Of the 13 species found in 2017, we characterized 4 as very low frequency, 4 as low frequency, 2 as medium frequency, and 3 as high frequency. Only ...


Risk And Cost Assessment Of Nitrate Contamination In Domestic Wells, Pongpun Juntakut, Erin M.K. Haacker, Daniel D. Snow, Chittaranjan Ray Feb 2020

Risk And Cost Assessment Of Nitrate Contamination In Domestic Wells, Pongpun Juntakut, Erin M.K. Haacker, Daniel D. Snow, Chittaranjan Ray

Daugherty Water for Food Global Institute: Faculty Publications

This study combines empirical predictive and economics models to estimate the cost of remediation for domestic wells exceeding suggested treatment thresholds for nitrates. A multiple logistic regression model predicted the probability of well contamination by nitrate, and a life cycle costing methodology was used to estimate costs of nitrate contamination in groundwater in two areas of Nebraska. In south-central Nebraska, 37% of wells were estimated to be at risk of exceeding a threshold of 7.5 mg/L as N, and 17% were at risk of exceeding 10 mg/L as N, the legal limit for human consumption in the ...