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Articles 1 - 30 of 172
Full-Text Articles in Other Environmental Sciences
U.S. Drought Monitor, December 22, 2015, Richard R. Heim Jr.
U.S. Drought Monitor, December 22, 2015, Richard R. Heim Jr.
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for December 22, 2015 (12/22/15) 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: Corn, Soybeans, Hay, Cattle, Winter wheat.
Genetic Analysis Of The Henry Mountains Bison Herd, Dustin H. Ranglack, Lauren K. Dobson, Johan T. Du Toit, James Derr
Genetic Analysis Of The Henry Mountains Bison Herd, Dustin H. Ranglack, Lauren K. Dobson, Johan T. Du Toit, James Derr
Wildland Resources Faculty Publications
Wild American plains bison (Bison bison) populations virtually disappeared in the late 1800s, with some remnant animals retained in what would become Yellowstone National Park and on private ranches. Some of these private bison were intentionally crossbred with cattle for commercial purposes. This forced hybridization resulted in both mitochondrial and nuclear introgression of cattle genes into some of the extant bison genome. As the private populations grew, excess animals, along with their history of cattle genetics, provided founders for newly established public bison populations. Of the US public bison herds, only those in Yellowstone and Wind Cave National Parks (YNP …
U.S. Drought Monitor, December 15, 2015, Richard Tinker
U.S. Drought Monitor, December 15, 2015, Richard Tinker
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for December 15, 2015 (12/15/15) 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: Corn, Soybeans, Hay, Cattle, Winter wheat.
U.S. Vehicle Efficiency Standards, Derek Baylog
U.S. Vehicle Efficiency Standards, Derek Baylog
Op-Eds from ENSC230 Energy and the Environment: Economics and Policies
The United States is a driving force of the global economy and a major innovator in the technology sector. For decades the world has looked to The United States as a leader of great technological advancements with the strong economy to allow investors a chance make these technologies a reality. So why is it now that we lag behind other countries when it comes to making our technology energy efficient? Sure we’ve been steadily growing our production of renewable resources with wind and solar energy, bet we are still behind in the second largest source of pollution, transportation. According to …
When Addressing Climate Change, Don’T Forget Animal Agriculture, Aaron Matzke
When Addressing Climate Change, Don’T Forget Animal Agriculture, Aaron Matzke
Op-Eds from ENSC230 Energy and the Environment: Economics and Policies
As COP 21 closes in Paris, global animal agriculture is a topic that has eluded the international media. Animal agriculture is responsible for more global greenhouse gas emissions than transportation according to the U.N.’s Food and Agriculture Organization. With global population and prosperity rising, the global meat supply is expected to nearly double by 2050. This increase in production will only be achieved if significant steps are taken to promote sustainability through existing techniques globally, and to regulate air contamination in industrial feedlots in the United States. Alternative meat production methods, which have seen considerable investment recently, could supplement animal …
Energy Subsidies And The Future Of Power, Christian Jewett
Energy Subsidies And The Future Of Power, Christian Jewett
Op-Eds from ENSC230 Energy and the Environment: Economics and Policies
The modern political climate has grown rife with talk concerning the use of fossil fuels as an energy source and how this may impact our planet for generations to come. The Left and the Right seem to be at odds over whether or not climate change is actually occurring, or who is causing it. Additionally, the energy industry likes to tout their “low-cost” energy sources as a boon to the global economy as well as a benefit to the consumer at large. However, are coal, oil, and natural gas truly the “cheapest” sources of energy? Whether or not one believes …
Making Walkable Communities, Katie Zuehlke
Making Walkable Communities, Katie Zuehlke
Op-Eds from ENSC230 Energy and the Environment: Economics and Policies
There is no doubt that global warming is happening. With all the rage about climate change and global warming people should be doing more about it than just reading about it in the news. We should be making efforts towards making changes on a local level. This in turn could grow to a national level with more and more people participating in the movement and actually make global changes, instead of just talking about it. When the scale of participants grows the scale of the changes made will grow as well and this will be the beginning of the changes …
Incentives Critical To Full Wind Power Potential In Nebraska, Michael Neale
Incentives Critical To Full Wind Power Potential In Nebraska, Michael Neale
Op-Eds from ENSC230 Energy and the Environment: Economics and Policies
On August 3rd, President Obama and the EPA announced the Clean Power Plan (CPP) with the goal of cutting 32% of carbon emissions nationwide by 2030. The plan institutes carbon reduction requirements for all states based on their current sources of energy, for Nebraska the goal is 40%. The next day, Governor Ricketts and his Attorney General announced they would be fighting the mandate in court; stating the plan is unlawful federal government overreach, while expressing concerns the reduction are infeasible in the timeframe given and will drive up electricity costs. Governor Ricketts misses the point on this. Reducing carbon …
Longevity Of Mineral Supplements Within The Soil And Associated Use By White-Tailed Deer, Brian C. Peterson, Keith D. Koupal, Andrew K. Schissel, Cody M. Siegel
Longevity Of Mineral Supplements Within The Soil And Associated Use By White-Tailed Deer, Brian C. Peterson, Keith D. Koupal, Andrew K. Schissel, Cody M. Siegel
Transactions of the Nebraska Academy of Sciences and Affiliated Societies
Humans have baited wildlife such as white-tailed deer (Odocoileus virginianus) for generations with the primary purpose of increasing hunting harvest success. Baiting regulation changes are often considered by state management agencies as they pertain to hunting opportunity, fair chase, and disease risk. Cervids require a variety of minerals to supplement biological processes, especially sodium (Na), calcium (Ca), and phosphorus (P). We developed artificial mineral supplement sites set in front of trail cameras to monitor deer use. Pooled soil samples were collected at mineral sites and compared to the surrounding area to determine the longevity of elevated minerals levels …
Three-Dimensional Wind Speed And Flux Measurements Over A Rain-Fed Soybean Field Using Orthogonal And Non-Orthogonal Sonic Anemometer Designs, Taylor Thomas
School of Natural Resources: Dissertations, Theses, and Student Research
The eddy covariance method for estimating fluxes of trace gases, energy and momentum in the constant flux layer above a plant canopy fundamentally relies on accurate measurements of the vertical wind speed. This wind speed is typically measured using a three-dimensional ultrasonic anemometer. Previous studies comparing anemometers with orthogonal transducer sets to those with non-orthogonal transducer sets suggest differences in measured 3D wind speed components, particularly for a vertical component. These differences, attributed to additional flow distortion caused by the non-orthogonal transducer arrangement and support structure, directly affect fluxes of trace gases, energy and momentum. A field experiment was conducted …
Geographic Variation, Null Hypotheses, And Subspecies Limits In The California Gnatcatcher: A Response To Mccormack And Maley, Robert M. Zink, Jeffrey G. Groth, Hernan Vázquez-Miranda
Geographic Variation, Null Hypotheses, And Subspecies Limits In The California Gnatcatcher: A Response To Mccormack And Maley, Robert M. Zink, Jeffrey G. Groth, Hernan Vázquez-Miranda
School of Natural Resources: Faculty Publications
We interpreted the results of nuclear DNA sequencing to be inconsistent with the recognition of California Gnatcatcher (Polioptila californica) subspecies. McCormack and Maley (2015) suggested that our data did support 2 taxa, one of which was P. c. californica, listed as Threatened under the Endangered Species Act (ESA). We summarize here how 2 sets of researchers with access to the same data reached different conclusions by including different analyses. We included the southern subspecies’ boundary from the taxonomy of Atwood (1991), the taxonomic basis for the ESA listing, which resulted in an Analysis of Molecular Variance that …
The First Bromeligenous Species Of Dendropsophus (Anura: Hylidae) From Brazil's Atlantic Forest, Rodrigo Barbosa Ferreira, Julián Faivovich, Karen H. Beard, José P. Pombal Jr
The First Bromeligenous Species Of Dendropsophus (Anura: Hylidae) From Brazil's Atlantic Forest, Rodrigo Barbosa Ferreira, Julián Faivovich, Karen H. Beard, José P. Pombal Jr
Wildland Resources Faculty Publications
We describe a new treefrog species of Dendropsophus collected on rocky outcrops in the Brazilian Atlantic Forest. Ecologically, the new species can be distinguished from all known congeners by having a larval phase associated with rainwater accumulated in bromeliad phytotelms instead of temporary or lentic water bodies. Phylogenetic analysis based on molecular data confirms that the new species is a member of Dendropsophus; our analysis does not assign it to any recognized species group in the genus. Morphologically, based on comparison with the 96 known congeners, the new species is diagnosed by its small size, framed dorsal color pattern, and …
The Clean Power Plan Needs To Be A Law, Mitchell Frischmeyer
The Clean Power Plan Needs To Be A Law, Mitchell Frischmeyer
Op-Eds from ENSC230 Energy and the Environment: Economics and Policies
The Clean Power Plan (CPP) is a long overdue policy which is necessary to direct national investment in emerging markets and create an intelligent energy infrastructure that strives to operate at max efficiency. To this point, the US has developed using inefficient and dirty fuels, a method which allowed for cheap and reliable energy generation, but is largely responsible for the change in global climate. If we expect to prevent climate change, our energy infrastructure must be reformed. Countries like Denmark have led the way in energy reform by creating policies set to reach 100% renewable generation by 2050 (8). …
Climate Change And Interpersonal Violence: A "Global" Estimate And Regional Inequities, Dennis Mares, Kenneth W. Moffett
Climate Change And Interpersonal Violence: A "Global" Estimate And Regional Inequities, Dennis Mares, Kenneth W. Moffett
SIUE Faculty Research, Scholarship, and Creative Activity
This study estimates the predicted impact of climate change on levels of violence in a sample of 57 countries. We sample western and non-western countries and perform a multilevel ARFIMA regression to examine if warmer temperatures are associated with higher levels of homicide. Our results indicate that each degree Celsius increase in annual temperatures is associated with a nearly 6% average increase in homicides. Regional variation in this predicted effect is detected, for example, with no apparent effects in former Soviet countries and far stronger effects found in Africa. This variation indicates that climate change may acutely increase violence in …
U.S. Drought Monitor, November 24, 2015, Richard R. Heim Jr.
U.S. Drought Monitor, November 24, 2015, Richard R. Heim Jr.
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for November 24, 2015 (11/24/15) 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: Corn, Soybeans, Hay, Cattle, Winter wheat.
U.S. Drought Monitor, November 17, 2015, Richard R. Heim Jr.
U.S. Drought Monitor, November 17, 2015, Richard R. Heim Jr.
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for November 17, 2015 (11/17/15) 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: Corn, Soybeans, Hay, Cattle, Winter wheat.
U.S. Drought Monitor, November 10, 2015, Richard Tinker
U.S. Drought Monitor, November 10, 2015, Richard Tinker
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for November 10, 2015 (11/10/15) 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: Corn, Soybeans, Hay, Cattle, Winter wheat.
U.S. Drought Monitor, November 3, 2015, David Miskus
U.S. Drought Monitor, November 3, 2015, David Miskus
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for November 3, 2015 (11/3/15) 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: Corn, Soybeans, Hay, Cattle, Winter wheat.
8000 Years Of Environmental Evolution Of Barrier–Lagoon Systems Emplaced In Coastal Embayments (Nw Iberia), Rita González-Villanueva, Marta Pérez-Arlucea, Susana Costas, Roberto Bao, Xose L. Otero, Ronald J. Goble
8000 Years Of Environmental Evolution Of Barrier–Lagoon Systems Emplaced In Coastal Embayments (Nw Iberia), Rita González-Villanueva, Marta Pérez-Arlucea, Susana Costas, Roberto Bao, Xose L. Otero, Ronald J. Goble
Department of Earth and Atmospheric Sciences: Faculty Publications
The rocky and indented coast of NW Iberia is characterized by the presence of highly valuable and vulnerable, small and shallow barrier– lagoon systems structurally controlled. The case study was selected to analyse barrier–lagoon evolution based on detailed sedimentary architecture, chronology, geochemical and biological proxies. The main objective is to test the hypothesis of structural control and the significance at regional scale of any highenergy event recorded. This work is also aimed at identifying general patterns and conceptualizing the formation and evolution of this type of coastal systems. The results allowed us to establish a conceptual model of Holocene evolution …
U.S. Drought Monitor, October 27, 2015, Brad Rippey
U.S. Drought Monitor, October 27, 2015, Brad Rippey
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for October 27, 2015 (10/27/15) 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: Corn, Soybeans, Hay, Cattle, Winter wheat.
The Vulnerability Of Indo-Pacific Mangrove Forests To Sea-Level Rise, Catherine E. Lovelock, Donald R. Cahoon, Daniel A. Friess, Glenn R. Guntenspergen, Ken W. Krauss, Ruth Reef, Kerrylee Rogers, Megan L. Saunders, Frida Sidik, Andrew Swales, Neil Saintilan, Le Xuan Thuyen, Tran Triet
The Vulnerability Of Indo-Pacific Mangrove Forests To Sea-Level Rise, Catherine E. Lovelock, Donald R. Cahoon, Daniel A. Friess, Glenn R. Guntenspergen, Ken W. Krauss, Ruth Reef, Kerrylee Rogers, Megan L. Saunders, Frida Sidik, Andrew Swales, Neil Saintilan, Le Xuan Thuyen, Tran Triet
United States Geological Survey: Staff Publications
Sea-level rise can threaten the long-term sustainability of coastal communities and valuable ecosystems such as coral reefs, salt marshes and mangroves1,2. Mangrove forests have the capacity to keep pace with sea-level rise and to avoid inundation through vertical accretion of sediments, which allows them to maintain wetland soil elevations suitable for plant growth3. The Indo- Pacific region holds most of the world’s mangrove forests4, but sediment delivery in this region is declining, owing to anthropogenic activities such as damming of rivers5. This decline is of particular concern because the Indo-Pacific region is …
U.S. Drought Monitor, October 20, 2015, Brad Rippey
U.S. Drought Monitor, October 20, 2015, Brad Rippey
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for October 20, 2015 (10/20/15) 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: Corn, Soybeans, Hay, Cattle, Winter wheat.
U.S. Drought Monitor, October 13, 2015, David Miskus
U.S. Drought Monitor, October 13, 2015, David Miskus
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for October 13, 2015 (10/13/15) 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: Corn, Soybeans, Hay, Cattle, Winter wheat.
U.S. Drought Monitor, October 6, 2015, David Miskus
U.S. Drought Monitor, October 6, 2015, David Miskus
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for October 6, 2015 (10/6/15) 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: Corn, Soybeans, Hay, Cattle, Winter wheat.
Fluctuating Fire Regimes And Their Historical Effects On Genetic Variation In An Endangered Shrubland Specialist, Hernan Vázquez-Miranda, Kelly R. Barr, C. Craig Farquhar, Robert M. Zink
Fluctuating Fire Regimes And Their Historical Effects On Genetic Variation In An Endangered Shrubland Specialist, Hernan Vázquez-Miranda, Kelly R. Barr, C. Craig Farquhar, Robert M. Zink
School of Natural Resources: Faculty Publications
The Pleistocene was characterized by worldwide shifts in community compositions. Some of these shifts were a result of changes in fire regimes, which influenced the distribution of species belonging to fire-dependent communities. We studied an endangered juniper–oak shrubland specialist, the black-capped vireo (Vireo atricapilla). This species was locally extirpated in parts of Texas and Oklahoma by the end of the 1980s as a result of habitat change and loss, predation, brood parasitism, and anthropogenic fire suppression. We sequenced multiple nuclear loci and used coalescence methods to obtain a deeper understanding of historical population trends than that typically available …
The Prairie Post Quarterly Newsletter Of The High Plains Regional Climate Center- October 2015, Martha Shulski, Natalie Umphlett, Bill Sorensen, Glen Roebke, Crystal J. Stiles
The Prairie Post Quarterly Newsletter Of The High Plains Regional Climate Center- October 2015, Martha Shulski, Natalie Umphlett, Bill Sorensen, Glen Roebke, Crystal J. Stiles
HPRCC Newsletter
Inside this issue:
Message from the director........................................1
Staff spotlight...........................1
New website design and products.....................................2
Training workshops................3
AWDN information.................4
Update on regional climate conditions and El Niño..........4
Research highlight..................5
Outreach/engagement.........5
Recent and upcoming travel and activities.............................6
Effects Of Changes In Moisture Source And The Upstream Rainout On Stable Isotopes In Precipitation – A Case Study In Nanjing, Eastern China, Y. Tang, H. Pang, W. Zhang, Y. Li, Shuang-Ye Wu, S. Hou
Effects Of Changes In Moisture Source And The Upstream Rainout On Stable Isotopes In Precipitation – A Case Study In Nanjing, Eastern China, Y. Tang, H. Pang, W. Zhang, Y. Li, Shuang-Ye Wu, S. Hou
Geology Faculty Publications
In the Asian monsoon region, variations in the stable isotopic composition of speleothems have often been attributed to the "amount effect". However, an increasing number of studies suggest that the "amount effect" in local precipitation is insignificant or even non-existent. To explore this issue further, we examined the variability of daily stable isotopic composition (δ18O) in precipitation from September 2011 to November 2014 in Nanjing, eastern China. We found that intra-seasonal variations of δ18O during summer were not significantly correlated with local rainfall amount but could be linked to changes in the moisture source location and rainout processes in the …
Droughtscape- Fall 2015, Kelly Smith
Droughtscape- Fall 2015, Kelly Smith
Droughtscape, Quarterly Newsletter of NDMC, 2007-
CONTENTS
Director’s column.........................1
NDMC 20th anniversary .............. 2
Employment opportunity..............3
Third quarter 2015 climate summary ...................................... 4
Third quarter 2015 impacts summary ...................................... 6
Workshop in Ethiopia...................8
San Antonio multi-hazard tournament .................................. 9
Healthy soil is drought buffer ............. 10
U2U Award ................................ 11
Cost-benefit analysis for utilities managing drought......................12
NDMC helps with rural poll questions on climate..................13
Introducing our post-docs..........14
South Korean visitors ................ 14
U.S. Drought Monitor, September 29, 2015, Eric Luebehusen
U.S. Drought Monitor, September 29, 2015, Eric Luebehusen
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for September 29, 2015 (9/29/15) 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: Corn, Soybeans, Hay, Cattle, Winter wheat.
U.S. Drought Monitor, September 22, 2015, Eric Luebehusen
U.S. Drought Monitor, September 22, 2015, Eric Luebehusen
United States Agricultural Commodities in Drought Archive
Drought map of U.S. for September 22, 2015 (9/22/15) 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: Corn, Soybeans, Hay, Cattle, Winter wheat.