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University of Nebraska - Lincoln

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Articles 1021 - 1050 of 1647

Full-Text Articles in Water Resource Management

Drought Planning Research In The United States: An Overview And Outlook, Xinyu Fu, Zhenghong Tang, Jianjun Wu, Kevin Mcmillan Jan 2013

Drought Planning Research In The United States: An Overview And Outlook, Xinyu Fu, Zhenghong Tang, Jianjun Wu, Kevin Mcmillan

Community and Regional Planning Program: Faculty Scholarly and Creative Activity

Drought is widely known as an insidious hazard due to its complex and unique characteristics. Drought disasters have brought tremendous economic losses and significant social and environmental impacts to communities across the globe. To further understand the hazard drought poses and provide insights into planning for drought preparedness, this article conducts a thorough literature review of drought hazard and drought planning frameworks within the United States. Two main approaches and three major forms of drought planning are discussed and summarized. Based on this review, a preliminary overview of drought planning status in the United States is presented. This study provides …


Climate Change: What Does It Mean For Nebraska?, Martha D. Shulski, Natalie A. Umphlett, Tapan B. Pathak, Kenneth G. Hubbard Jan 2013

Climate Change: What Does It Mean For Nebraska?, Martha D. Shulski, Natalie A. Umphlett, Tapan B. Pathak, Kenneth G. Hubbard

High Plains Regional Climate Center: Staff Publications

Because Nebraska’s location on the North American continent is far removed from large bodies of water, Nebraskans experience a strong continental type climate. As such, residents do not benefit from the moderating influence of the ocean, and temperatures can have wide swings from day to day and season to season. Typical characteristics for a continental climate at this latitude are large temperature variability with warm summers dominated by convective thunderstorms, and cold winters influenced by snow and wind from mid-latitude cyclones.


U.S. Drought Monitor, January 1, 2013, Richard R. Heim Jr. Jan 2013

U.S. Drought Monitor, January 1, 2013, Richard R. Heim Jr.

United States Agricultural Commodities in Drought Archive

Drought map of the United States for January 1, 2013 (1/1/13) plus: United States crop areas experiencing drought (map), an approximate percentage of crop located in drought by state (bar graph), and the percentage of crop area located in drought during the past 52 weeks (line graph) for hay, cattle, and winter wheat.


Fecundity Of The Chinese Mystery Snail In A Nebraska Reservoir, Bruce J. Stephen, Craig R. Allen, Noelle M. Chaine, Kent A. Fricke, Danielle M. Haak, Michelle L. Hellman, Robert A. Kill, Kristine T. Nemec, Kevin L. Pope, Nicholas A. Smeenk, Daniel R. Uden, Kody M. Unstad, Ashley E. Vanderham, Alec Wong Jan 2013

Fecundity Of The Chinese Mystery Snail In A Nebraska Reservoir, Bruce J. Stephen, Craig R. Allen, Noelle M. Chaine, Kent A. Fricke, Danielle M. Haak, Michelle L. Hellman, Robert A. Kill, Kristine T. Nemec, Kevin L. Pope, Nicholas A. Smeenk, Daniel R. Uden, Kody M. Unstad, Ashley E. Vanderham, Alec Wong

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

The Chinese mystery snail (Bellamya chinensis) is a non-indigenous, invasive species in freshwater ecosystems of North America. We provide fecundity estimates for a population of these snails in a Nebraska reservoir. We dissected 70 snails, of which 29 were females. Nearly all female snails contained developing young, with an average of 25 young per female. Annual fecundity was estimated at between 27.2 and 33.3 young per female per year. Based on an estimated adult population and the calculated fecundity, the annual production for this reservoir was between 2.2 and 3.7 million young.


Predictors Of Regional Establishment Success And Spread Of Introduced Non-Indigenous Vertebrates, Criag R. Allen, Kristine T. Nemec, Donald A. Wardwell, Justin D. Hoffman, Mathew L. Brust, Karie L. Decker, Daniel Fogell, Jennifer Hogue, Aaron Lotz, Thaddeus Miller, Marcy Pummill, Luis E. Ramirez-Yañez, Daniel R. Uden Jan 2013

Predictors Of Regional Establishment Success And Spread Of Introduced Non-Indigenous Vertebrates, Criag R. Allen, Kristine T. Nemec, Donald A. Wardwell, Justin D. Hoffman, Mathew L. Brust, Karie L. Decker, Daniel Fogell, Jennifer Hogue, Aaron Lotz, Thaddeus Miller, Marcy Pummill, Luis E. Ramirez-Yañez, Daniel R. Uden

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

Aim To provide the first analysis of predictors of both establishment and spread, both within and across taxa, for all vertebrate taxa within a region.We used Florida, USA, as our study system because it has a well-documented history of introduction and invasion, and is a hotspot for biological invasions.

Location Florida, USA.

Methods We analysed non-indigenous species (NIS) data from peninsular Florida – which included both successful and unsuccessful introductions from all vertebrate classes – to determine the best predictors of both establishment and spread for fish (65 species), herpetofauna (63 species), birds (71 species) and mammals (25 species). We …


The Feasibility Of Producing Adequate Feedstock For Year-Round Cellulosic Ethanol Production In An Intensive Agricultural Fuelshed, Daniel R. Uden, Robert B. Mitchell, Craig R. Allen, Qingfeng Guan, Tim D. Mccoy Jan 2013

The Feasibility Of Producing Adequate Feedstock For Year-Round Cellulosic Ethanol Production In An Intensive Agricultural Fuelshed, Daniel R. Uden, Robert B. Mitchell, Craig R. Allen, Qingfeng Guan, Tim D. Mccoy

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

To date, cellulosic ethanol production has not been commercialized in the United States. However, government mandates aimed at increasing second-generation biofuel production could spur exploratory development in the cellulosic ethanol industry. We conducted an in-depth analysis of the fuelshed surrounding a starch-based ethanol plant near York, Nebraska that has the potential for cellulosic ethanol production. To assess the feasibility of supplying adequate biomass for year-round cellulosic ethanol production from residual maize (Zea mays) stover and bioenergy switchgrass (Panicum virgatum) within a 40-km road network service area of the existing ethanol plant, we identified ∼14,000 ha of marginally productive cropland within …


Survival And Behavior Of Chinese Mystery Snails (Bellamya Chinensis) In Response To Simulated Water Body Drawdowns And Extended Air Exposure, Kody M. Unstad, Daniel R. Uden, Craig R. Allen, Noelle M. Chaine, Danielle M. Haak, Robert A. Kill, Kevin L. Pope, Bruce J. Stephen, Alec Wong Jan 2013

Survival And Behavior Of Chinese Mystery Snails (Bellamya Chinensis) In Response To Simulated Water Body Drawdowns And Extended Air Exposure, Kody M. Unstad, Daniel R. Uden, Craig R. Allen, Noelle M. Chaine, Danielle M. Haak, Robert A. Kill, Kevin L. Pope, Bruce J. Stephen, Alec Wong

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

Nonnative invasive mollusks degrade aquatic ecosystems and induce economic losses worldwide. Extended air exposure through water body drawdown is one management action used for control. In North America, the Chinese mystery snail (Bellamya chinensis) is an invasive aquatic snail with an expanding range, but eradication methods for this species are not well documented. We assessed the ability of B. chinensis to survive different durations of air exposure, and observed behavioral responses prior to, during, and following desiccation events. Individual B. chinensis specimens survived air exposure in a laboratory setting for > 9 weeks, and survivorship was greater among adults …


Enamel-Based Mark Performance For Marking Chinese Mystery Snail Bellamya Chinensis, Alec Wong, Craig R. Allen, Noelle M. Hart, Danielle M. Haak, Kevin L. Pope, Nicholas A. Smeenk, Bruce J. Stephen, Daniel R. Uden Jan 2013

Enamel-Based Mark Performance For Marking Chinese Mystery Snail Bellamya Chinensis, Alec Wong, Craig R. Allen, Noelle M. Hart, Danielle M. Haak, Kevin L. Pope, Nicholas A. Smeenk, Bruce J. Stephen, Daniel R. Uden

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

The exoskeleton of gastropods provides a convenient surface for carrying marks, and in the interest of improving future marking methods our laboratory assessed the performance of an enamel paint. The endurance of the paint was also compared to other marking methods assessed in the past. We marked the shells of 30 adult Chinese mystery snails Bellamya chinensis and held them in an aquarium for 181 days. We observed no complete degradation of any enamel-paint mark during the 181 days. The enamel-paint mark was superior to a nail-polish mark, which lasted a median of 100 days. Enamel-paint marks also have a …


Mortality Estimate Of Chinese Mystery Snail, Bellamya Chinensis (Reeve, 1863) In A Nebraska Reservoir, Danielle M. Haak, Noelle M. Chaine, Bruce J. Stephen, Alec Wong, Craig R. Allen Jan 2013

Mortality Estimate Of Chinese Mystery Snail, Bellamya Chinensis (Reeve, 1863) In A Nebraska Reservoir, Danielle M. Haak, Noelle M. Chaine, Bruce J. Stephen, Alec Wong, Craig R. Allen

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

The Chinese mystery snail (Bellamya chinensis) is an aquatic invasive species found throughout the USA. Little is known about this species’ life history or ecology, and only one population estimate has been published, for Wild Plum Lake in southeast Nebraska. A recent die-off event occurred at this same reservoir and we present a mortality estimate for this B. chinensis population using a quadrat approach. Assuming uniform distribution throughout the newly-exposed lake bed (20,900 m2), we estimate 42,845 individuals died during this event, amounting to approximately 17% of the previously-estimated population size of 253,570. Assuming uniform distribution throughout all …


Scenarios Of Bioenergy Development Impacts On Regional Groundwater Withdrawals, Daniel R. Uden, Craig R. Allen, Rob B. Mitchell, Qingfeng Guan, Tim D. Mccoy Jan 2013

Scenarios Of Bioenergy Development Impacts On Regional Groundwater Withdrawals, Daniel R. Uden, Craig R. Allen, Rob B. Mitchell, Qingfeng Guan, Tim D. Mccoy

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

Irrigation increases agricultural productivity, but it also stresses water resources (Huffaker and Hamilton 2007). Drought and the potential for drier conditions resulting from climate change could strain water supplies in landscapes where human populations rely on finite groundwater resources for drinking, agriculture, energy, and industry (IPCC 2007). For instance, in the North American Great Plains, rowcrops are utilized for livestock feed, food, and bioenergy production (Cassman and Liska 2007), and a large portion is irrigated with groundwater from the High Plains aquifer system (McGuire 2011). Under projected future climatic conditions, greater crop water use requirements and diminished groundwater recharge rates …


Rainwater Basin Wetland Inundation Decision Support System Guide, Christopher F. Jorgensen, Andy A. Bishop, Daniel R. Uden, Roger Grosse Jan 2013

Rainwater Basin Wetland Inundation Decision Support System Guide, Christopher F. Jorgensen, Andy A. Bishop, Daniel R. Uden, Roger Grosse

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

The Rainwater Basin region of south-central Nebraska, U.S.A., is a critical stopover location for migratory waterfowl, waterbirds and shorebirds traveling along the Central Flyway. The ephemeral playa wetlands in the region serve as spring staging areas, providing critical habitat for migrating birds to rest, feed and establish pairs before resuming their northward migration to the breeding grounds. Collectively, the playa wetlands found in the region form the Rainwater Basin Wetland Complex, encompassing a 6,150 square-mile area of rolling loess plains that extend over 21 counties. Analyses of the State’s historic soil surveys (1910-1917), National Wetland Inventory (NWI; 1980-1982; U.S. Geological …


Effects Of Simulated Angler Capture And Live-Release Tournaments On Walleye Survival, John H. Loomis, Harold L. Schramm Jr., Bruce Vondracek, Patrick D. Gerard, Christopher J. Chizinski Jan 2013

Effects Of Simulated Angler Capture And Live-Release Tournaments On Walleye Survival, John H. Loomis, Harold L. Schramm Jr., Bruce Vondracek, Patrick D. Gerard, Christopher J. Chizinski

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

We examined the effects of acclimation water temperature, live-well (LW) water temperature, and LW dissolved oxygen (DO) concentration on survival of adult Walleyes Sander vitreus subjected to simulated tournament conditions (angling, LW confinement, and weigh-in procedures) under controlled laboratory conditions. We tested three acclimation temperatures (12, 18, and 24◦C), and three LWtemperature differentials (Delta T=−4, 0, and +4◦C) were tested at each acclimation temperature. Survival was monitored after 8 h of LW confinement and during a 5-d retention period in 1,700-L tanks. None of the Walleyes that were acclimated to 24◦C and subjected to simulated tournament procedures survived the 5-d …


2013 Nebraska Groundwater Quality Monitoring Report Jan 2013

2013 Nebraska Groundwater Quality Monitoring Report

Nebraska Department of Environmental Quality: Reports

The 2001 Nebraska Legislature passed LB329 (Neb. Rev. Stat. §46-1304) which, in part, directed the Nebraska Department of Environmental Quality (NDEQ) to report on groundwater quality monitoring in Nebraska. Reports have been issued annually since December 2001. The text of the statute applicable to this report follows: “The Department of Environmental Quality shall prepare a report outlining the extent of ground water quality monitoring conducted by natural resources districts during the preceding calendar year. The department shall analyze the data collected for the purpose of determining whether or not ground water quality is degrading or improving and shall present the …


Assessing Total Nitrogen In Surface-Water Samples: Precision And Bias Of Analytical And Computational Methods, David L. Rus, Charles J. Patton, David K. Mueller, Charles G. Crawford Jan 2013

Assessing Total Nitrogen In Surface-Water Samples: Precision And Bias Of Analytical And Computational Methods, David L. Rus, Charles J. Patton, David K. Mueller, Charles G. Crawford

United States Geological Survey: Water Reports and Publications

The characterization of total-nitrogen (TN) concentrations is an important component of many surface-water-quality programs. However, three widely used methods for the determination of total nitrogen—(1) derived from the alkaline-persulfate digestion of whole-water samples (TN-A); (2) calculated as the sum of total Kjeldahl nitrogen and dissolved nitrate plus nitrite (TN-K); and (3) calculated as the sum of dissolved nitrogen and particulate nitrogen (TN-C)—all include inherent limitations. A digestion process is intended to convert multiple species of nitrogen that are present in the sample into one measureable species, but this process may introduce bias. TN-A results can be negatively biased in the …


Riparian Evapotranspiration In Nebraska, Brent M. Hall, David L. Rus Jan 2013

Riparian Evapotranspiration In Nebraska, Brent M. Hall, David L. Rus

United States Geological Survey: Water Reports and Publications

With increasing demands being placed on the water resources of Nebraska, characterizing evapotranspiration (ET) from riparian vegetation has gained importance to water users and managers. This report summarizes and compares the results from several studies of the ET from cottonwood-dominated riparian forests, riparian grasslands, and common reed, Phragmites australis, in Nebraska. Reported results show that the highest seasonal ET amounts were associated with Phragmites australis, followed by riparian forests, with riparian grasslands experiencing the lowest total ET of the studied vegetation communities.


Water Current, Volume 45, No. 1, Winter 2013 Jan 2013

Water Current, Volume 45, No. 1, Winter 2013

Water Current Newsletter

Winter Storm Cancels January WRAP Meeting

Two Interview for Nebraska Water Center Directorship

UNL Scientist Cites Managing Risks in New Keystone XL Pipeline Route

Meet the Faculty - Derek M. Heeren

From the Interim Director: Interviewing Permanent Director

Expect More Impacts as Nebraska Drought Rolls into Second Year

The Nebraska Water Resources Association

Free Public Water Lectures Continue Through April

2013 Water and Natural Resources Tour Is June 25-27: Managing Nebraska's Water Resources

Climate Masters of Nebraska Creating Informed Activists

Drought Webinar Series

February Planning Trip for the June Water and Natural Resources Tour

News from the EPA: EPA Releases …


U.S. Drought Monitor, December 25, 2012, Richard R. Heim Jr. Dec 2012

U.S. Drought Monitor, December 25, 2012, Richard R. Heim Jr.

United States Agricultural Commodities in Drought Archive

Drought map of the United States for December 25, 2012 (12/25/12) plus: United States crop areas experiencing drought (map), an approximate percentage of crop located in drought by state (bar graph), and the percentage of crop area located in drought during the past 52 weeks (line graph) for hay, cattle, and winter wheat.


U.S. Drought Monitor, December 18, 2012, David Simeral Dec 2012

U.S. Drought Monitor, December 18, 2012, David Simeral

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for December 18, 2012 (12/18/12) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Hay, Cattle, Winter wheat.


U.S. Drought Monitor, December 11, 2012, Rich Tinker Dec 2012

U.S. Drought Monitor, December 11, 2012, Rich Tinker

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for December 11, 2012 (12/11/12) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Hay, Cattle, Winter wheat.


U.S. Drought Monitor, December 4, 2012, Rich Tinker Dec 2012

U.S. Drought Monitor, December 4, 2012, Rich Tinker

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for December 4, 2012 (12/4/12) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Hay, Cattle, Winter wheat.


Interactions Of Zoo Plankton And Phytoplankton With Cyanobacteria, Rebecca J. Alexander Dec 2012

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 …


U.S. Drought Monitor, November 27, 2012, Eric Luebehusen Nov 2012

U.S. Drought Monitor, November 27, 2012, Eric Luebehusen

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for November 27, 2012 (11/27/12) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Hay, Cattle, Winter wheat.


Agricultural Advisors: A Receptive Audience For Weather And Climate Information?, Linda Stalker Prokopy, Tonya Haigh, Amber Saylor Mase, Jim Angel, Chad Hart, Cody Knutson, Maria Carmen Lemos, Yun Jia Lo, Jean Mcguire, Lois Wright Morton, Jennifer Perron, Dennis Todey, Melissa Widhalm Nov 2012

Agricultural Advisors: A Receptive Audience For Weather And Climate Information?, Linda Stalker Prokopy, Tonya Haigh, Amber Saylor Mase, Jim Angel, Chad Hart, Cody Knutson, Maria Carmen Lemos, Yun Jia Lo, Jean Mcguire, Lois Wright Morton, Jennifer Perron, Dennis Todey, Melissa Widhalm

National Drought Mitigation Center: Faculty Publications

As the climate in the midwestern United States becomes increasingly variable because of global climate change, it is critical to provide tools to the agricultural community to ensure adaptability and profitability of agricultural cropping systems. When used by farmers and their advisors, agricultural decision support tools can reduce uncertainty and risks in the planning, operation, and management decisions of the farm enterprise. Agricultural advisors have historically played a key role in providing information and guidance in these decisions. However, little is known about what these advisors know or think about weather and climate information and their willingness to incorporate this …


U.S. Drought Monitor, November 20, 2012, Eric Luebehusen Nov 2012

U.S. Drought Monitor, November 20, 2012, Eric Luebehusen

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for November 20, 2012 (11/20/12) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Hay, Cattle, Winter wheat.


The Nebraska Water Leaders Academy: Blending Water Policy And Science With Leadership Theory, Mark E. Burbach, Connie I. Reimers-Hild Nov 2012

The Nebraska Water Leaders Academy: Blending Water Policy And Science With Leadership Theory, Mark E. Burbach, Connie I. Reimers-Hild

Nebraska Water Leaders Academy: Publications and Materials

Water Challenges are Growing
Population Continues to Grow
New and Innovative Leadership is Needed
Nebraska Water Leaders Academy (NWLA) was born!

NWLA Objectives
•Develop scientific, social and political knowledge about water and related natural resources
• Examine the economical and beneficial uses of Nebraska’s water resources
• Develop and enhance leadership and critical thinking skills
• Develop interpersonal skills to become actively involved with water policy issues at the local, regional, state, and national levels
• Develop life-long water resources management skills
• Challenge traditional paradigms while encouraging critical thinking and creative solutions.


U.S. Drought Monitor, November 13, 2012, David Miskus Nov 2012

U.S. Drought Monitor, November 13, 2012, David Miskus

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for November 13, 2012 (11/13/12) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Hay, Cattle, Winter wheat.


U.S. Drought Monitor, November 6, 2012, David Miskus Nov 2012

U.S. Drought Monitor, November 6, 2012, David Miskus

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for November 6, 2012 (11/6/12) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Hay, Cattle, Winter wheat.


U.S. Drought Monitor, October 30, 2012, Michael J. Brewer, Liz Love-Brotak Oct 2012

U.S. Drought Monitor, October 30, 2012, Michael J. Brewer, Liz Love-Brotak

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for October 30, 2012 (10/30/12) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Hay, Cattle, Winter wheat.


U.S. Drought Monitor, October 16, 2012, Matthew Rosencrans Oct 2012

U.S. Drought Monitor, October 16, 2012, Matthew Rosencrans

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for October 16, 2012 (10/16/12) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Hay, Cattle, Winter wheat.


U.S. Drought Monitor, October 9, 2012, Matthew Rosencrans Oct 2012

U.S. Drought Monitor, October 9, 2012, Matthew Rosencrans

United States Agricultural Commodities in Drought Archive

Drought map of U.S. for October 9, 2012 (10/9/12) plus: U.S. crop areas experiencing drought (map), Approximate percentage of crop located in drought, by state (bar graph), Percent of crop area located in drought, past 52 weeks (line graph) for: Hay, Cattle, Winter wheat.