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Articles 3001 - 3030 of 5276
Full-Text Articles in Hydrology
Riparian And Associated Habitat Characteristics Related To Nutrient Concentrations And Biological Responses Of Small Streams In Selected Agricultural Areas, United States, 2003–04, Ronald B. Zelt, Mark D. Munn
Riparian And Associated Habitat Characteristics Related To Nutrient Concentrations And Biological Responses Of Small Streams In Selected Agricultural Areas, United States, 2003–04, Ronald B. Zelt, Mark D. Munn
United States Geological Survey: Publications
Physical factors, including both in-stream and riparian habitat characteristics that limit biomass or otherwise regulate aquatic biological condition, have been identified by previous studies. However, linking the ecological significance of nutrient enrichment to habitat or landscape factors that could allow for improved management of streams has proved to be a challenge in many regions, including agricultural landscapes, where many ecological stressors are strong and the variability among watersheds typically is large. Riparian and associated habitat characteristics were sampled once during 2003–04 for an intensive ecological and nutrients study of small perennial streams in five contrasting agricultural landscapes across the United …
Droughtscape, Winter 2009, Kelly Smith
Droughtscape, Winter 2009, Kelly Smith
DroughtScape: Quarterly Newsletter of the National Drought Mitigation Center (2007–2023)
Bastrop TX: Feb. 12 Central CA: Feb. 24, 26
La Niña May Keep West and Gulf Coast Dry
Big Canoes to Launch
2008 in Review
U.S. Feels Drought Impacts in 2008
NDMC Welcomes Widhalm, Sakamoto
Climate Modelers at Workshop Look to Sea Surface Temperatures for Drought Prediction
Barriers And Drivers Influencing Adoption Of Perennial Pastures On The South Coast Of Wa, Jamie Bowyer, Rebecca Heath
Barriers And Drivers Influencing Adoption Of Perennial Pastures On The South Coast Of Wa, Jamie Bowyer, Rebecca Heath
Resource management technical reports
No abstract provided.
Farming For The Future : Industry Practice Baselines, Danielle England, Susan Murphy-White, John Noonan, Marie Shanks, Jon Warren
Farming For The Future : Industry Practice Baselines, Danielle England, Susan Murphy-White, John Noonan, Marie Shanks, Jon Warren
Resource management technical reports
No abstract provided.
Ecosystem Jenga!, Natalie Umphlett, Tierney Brosius, Ramesh Laungani, Diandra L. Leslie-Pelecky
Ecosystem Jenga!, Natalie Umphlett, Tierney Brosius, Ramesh Laungani, Diandra L. Leslie-Pelecky
High Plains Regional Climate Center: Staff Publications
Students are often taught that ecosystems are "delicately balanced," But what. exactly, does this mean? How do we help students relate what they learn in the classroom about ecosystems to the world immediately around them?
As scientists who work closely with middle school students as part of a National Science Foundation-funded Graduate Fellows in K-12 Education program called Project Fulcrum. we have learned that abstract concepts, such as "delicately balanced ecosystem," are often not truly understood. We addressed this concern in a seventh-grade science classroom in Lincoln. Nebraska. by introducing students to locally threatened saline wetlands and the endangered Salt …
Observations Of The Transient Characteristics Of The Hydrological Balance, Matthew Czikowsky
Observations Of The Transient Characteristics Of The Hydrological Balance, Matthew Czikowsky
Legacy Theses & Dissertations (2009 - 2024)
The impact of transient input events on the hydrological balance components are studied over a wide range of spatial and temporal scales. First, interception evaporation and energy-balance changes during and following precipitation events are examined at the site spatial and event temporal scale. Second, the hydrological response to spatial and seasonal changes in precipitation and evapotranspiration due to land cover changes are examined on the small-to-large watershed scale, covering the event to seasonal time scales.
The Effect Of Vegetated Roofs On Acid Precipitation Runoff, Jennifer Gillen
The Effect Of Vegetated Roofs On Acid Precipitation Runoff, Jennifer Gillen
Geology Theses and Dissertations
Vegetated, or “green” roofs are used in urban architecture and sustainable building to capture stormwater and enhance urban wildlife. Most research to date has focused on their water retention capabilities, but green roofs also have the potential to treat anthropogenic acid precipitation in urban environments. More specifically, green roofs could reduce sulfate, nitrate and hydrogen ion concentrations in runoff. One previous study has demonstrated that nitrate was reduced in water draining from a green roof (Berndtsson, et al. 2006), but this unpublished thesis appears to be the first comprehensive study of the effects of vegetated roof materials on major ions …
Eastern Nebraska Water Resources Assessment (Enwra): Introduction To A Hydrogeological Study, Dana Divine, R. Matthew Joeckel, Jesse T. Korus, P.R. Hanson, Sue Olafsen Lackey
Eastern Nebraska Water Resources Assessment (Enwra): Introduction To A Hydrogeological Study, Dana Divine, R. Matthew Joeckel, Jesse T. Korus, P.R. Hanson, Sue Olafsen Lackey
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Setting Targets For Resource Condition In Yilliminning Catchment, Leon Van Wyk, Gregory Paul Raper
Setting Targets For Resource Condition In Yilliminning Catchment, Leon Van Wyk, Gregory Paul Raper
Resource management technical reports
No abstract provided.
Evolution Of The Cretaceous Calcareous Nanofossil Genus Eiffellithus And Its Biostratigraphic Significance, Jamie L. Shamrock, David K. Watkins
Evolution Of The Cretaceous Calcareous Nanofossil Genus Eiffellithus And Its Biostratigraphic Significance, Jamie L. Shamrock, David K. Watkins
Department of Earth and Atmospheric Sciences: Faculty Publications
The calcareous nanofossil genus Eiffellithus is an important taxon of mid- to Upper Cretaceous marine sediments in biostratigraphy and paleoceanography. The definition of species within Eiffellithus have been both broadly interpreted and variably applied by nanofossil workers. This is particularly true for the Eiffellithus eximius plexus. While the taxonomy of mid-Cretaceous Eiffellithus species has recently been well-defined, the remaining 35 m.y. history of the genus has not been closely examined. Our investigation of Cenomanian to Maastrichtian sediments from the Western Interior Seaway, Gulf of Mexico, and Western Atlantic gives rise to six new species of Eiffellithus that can be reliably …
Pilot Study: The Nature And Thickness Of The Unsaturated Zone And Delineation Of Confined Aquifers, Sue Olafsen Lackey, Les Howard
Pilot Study: The Nature And Thickness Of The Unsaturated Zone And Delineation Of Confined Aquifers, Sue Olafsen Lackey, Les Howard
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Nebraska Statewide Groundwater-Level Monitoring Report 2009, Jesse T. Korus Dr., Mark E. Burbach
Nebraska Statewide Groundwater-Level Monitoring Report 2009, Jesse T. Korus Dr., Mark E. Burbach
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Spatial, Geologic, And Land Use Characteristics Of Sinkholes In A Karst Landscape: Waverly, Iowa, Adam Richard Campbell
Spatial, Geologic, And Land Use Characteristics Of Sinkholes In A Karst Landscape: Waverly, Iowa, Adam Richard Campbell
Honors Program Theses
The city of Waverly and its surrounding area in the Waverly Quadrangle has the fortune of having a large supply of groundwater that is easily accessible. However, the karst landscape that comprises much of the quadrangle has made the groundwater supply vulnerable to degradation from point and non-point contamination. Thus, it is crucial to explore the properties of sinkholes in the region to determine their threat to groundwater. To determine this threat, it is necessary to examine the characteristics of where and under what circumstances sinkholes develop. The Waverly Quadrangle is located entirely within the Iowan Surface. The bedrock in …
Two-Dimensional Gravity Modeling Of The Rattlesnake Springs Watershed, Carlsbad Caverns National Park, New Mexico, Nikolay D. Boykov
Two-Dimensional Gravity Modeling Of The Rattlesnake Springs Watershed, Carlsbad Caverns National Park, New Mexico, Nikolay D. Boykov
Open Access Theses & Dissertations
A series of non-invasive geophysical investigations at the Rattlesnake Springs part of Carlsbad Caverns National Park, New Mexico, were performed in an effort to better delineate the watershed of the springs. The goal of this project is to determine possible locations of fractures and faults that may control the distribution of groundwater that feeds Rattlesnake Springs. Once the water flow paths are identified, the park will be able to better protect Rattlesnake Springs from environmental hazards, such as oil and gas drilling, as well as from upstream water development. As part of this effort I conducted a precision gravity survey …
Land Resources Series No 21 - Tambellup-Borden Area Land Resources Survey, Angela Stuart-Street, Rohan Marold
Land Resources Series No 21 - Tambellup-Borden Area Land Resources Survey, Angela Stuart-Street, Rohan Marold
Natural resources published reports
AGDEX 526
Land Resources Series No. 21
This report presents results from soil-landscape mapping at a scale of 1: 100,000 in the Tambellup- Borden area of Western Australia. It is accompanied by a soil-landscape map covering almost 511,000 hectares.
Most of the survey occurs within the upper Frankland-Gordon, Kent, North Stirlings Basin and upper reaches of the Pallinup and Kalgan River catchments. The survey falls within the Katanning and Albany Department of Agriculture and Food advisory districts.
Seventeen soil-landscape systems have been identified and are represented on the map on the accompanying CD-ROM. These systems have been further divided into …
Demonstrating Sustainable Farm Management Systems. Final Report For Rcg05-Ord13, Tara Slaven, Francis Bright, Jodie Hawley, Joe Sherrard
Demonstrating Sustainable Farm Management Systems. Final Report For Rcg05-Ord13, Tara Slaven, Francis Bright, Jodie Hawley, Joe Sherrard
Natural resources research reports
The Ord River Irrigation Area (ORIA) has a 'flow through' irrigation system. That is, irrigation water is diverted from Lake Kununurra and any waste water from the irrigation system and farms flows directly back into the river downstream. This means that any sediment, nutrient or chemicals in tailwater from farms flows straight into the river.
The Ord Land and Water Management Plan 2000 specifies goals to improve surface water quality. The goals are to reduce the load of chemical and nutrient contamination and sediment in tailwater by 40 per cent.
The aim of this project was to develop and demonstrate …
Report On Polyacrylamide, A Practice To Reduce Sediment And Insoluable Chemicals In Tailwater, Tara Slaven
Report On Polyacrylamide, A Practice To Reduce Sediment And Insoluable Chemicals In Tailwater, Tara Slaven
Bulletins 4000 -
The main barrier to the adoption of PAM seems to the timing of the cost of outlay. This could add significantly to the initial crop establishment costs at a time of year when rowers receive no income. However, the partial and parametric analysis indicates that there re benefits from using PAM as part of the crop management cycle. These benefits are from ving water, retaining sediment on-farm and reducing the cost of delving drains. There are ther potential economic benefits including the retainment of phosphorus as a plant nutrient n-farm and subsequent yield increases.
Additionally, the off-site environmental impacts seem …
Western Australian Natural Resource Management Plan 09, Department Of Agriculture, Western Australia
Western Australian Natural Resource Management Plan 09, Department Of Agriculture, Western Australia
Natural resources published reports
The purpose of the State Natural Resource Management [NRM] Plan is to communicate the direction for sustainably managing Western Australia's natural resources.
This direction has been informed by previous initiatives such as the 'Decade of Landcare', several programs focused on salinity, the Western Australian State Sustainability Strategy (2009), and more recently a report commissioned by the State entitled The delivery of Natural Resources Management in Western Australia - a review (2006), which recommended preparation of an NRM Plan. The review noted that the most important issue for the State to clarify first was the outcome it seeks rather than how …
Slides: Lower Arkansas Valley Super Ditch Company, Inc.: Water Leasing Program, Peter Nichols
Slides: Lower Arkansas Valley Super Ditch Company, Inc.: Water Leasing Program, Peter Nichols
Evolving Regional Frameworks for Ag-to-Urban Water Transfers (December 11)
Presenter: Peter Nichols, General Counsel of the Lower Arkansas Valley “Super Ditch” Company, Trout, Raley, Montano, Witwer & Freeman PC, Colorado
33 slides
Slides: Idaho Rental Pool: Rules And Procedures, Idaho Water Resource Board, Jerry R. Rigby
Slides: Idaho Rental Pool: Rules And Procedures, Idaho Water Resource Board, Jerry R. Rigby
Evolving Regional Frameworks for Ag-to-Urban Water Transfers (December 11)
Presenter: Jerry Rigby, Counsel for Fremont‐Madison Irrigation District, Rigby, Thatcher, Andrus, Rigby & Moeller, Idaho
25 slides
Agenda: Evolving Regional Frameworks For Ag-To-Urban Water Transfers, University Of Colorado Boulder. Natural Resources Law Center, Western Water Policy Program, Western Water Assessment (Program), Red Lodge Clearinghouse
Agenda: Evolving Regional Frameworks For Ag-To-Urban Water Transfers, University Of Colorado Boulder. Natural Resources Law Center, Western Water Policy Program, Western Water Assessment (Program), Red Lodge Clearinghouse
Evolving Regional Frameworks for Ag-to-Urban Water Transfers (December 11)
The permanent transfer of water from agricultural users to municipalities has become a common feature of water management in several western states. In many cases, these voluntary market‐based transfers provide significant benefits to both the buyers and sellers, but many third parties—including remaining irrigators, rural businesses and communities dependent upon agricultural economies—have been negatively impacted. While some impacts of these so‐called “buy and dry” transfers are largely unavoidable, many can be lessened by temporary arrangements that only shift water to cities in years when municipal supplies are inadequate, such as drought and post‐drought storage recovery, and by consolidating individual farm‐to‐city …
Slides: Pvid/Mwd Land Management, Crop Rotation And Water Supply Program, Ed Smith
Slides: Pvid/Mwd Land Management, Crop Rotation And Water Supply Program, Ed Smith
Evolving Regional Frameworks for Ag-to-Urban Water Transfers (December 11)
Presenter: Ed Smith, General Manager, Palo Verde Irrigation District, Southern California
25 slides
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.
Global Irrigation Water Demand: Variability And Uncertainties Arising From Agricultural And Climate Data Sets, Dominik Wisser, Steve Frolking, Ellen M. Douglas, Balazs M. Fekete, Charles Vorosmarty, Andreas H. Schumann
Global Irrigation Water Demand: Variability And Uncertainties Arising From Agricultural And Climate Data Sets, Dominik Wisser, Steve Frolking, Ellen M. Douglas, Balazs M. Fekete, Charles Vorosmarty, Andreas H. Schumann
Earth Sciences
Agricultural water use accounts for around 70% of the total water that is withdrawn from surface water and groundwater. We use a new, gridded, global-scale water balance model to estimate interannual variability in global irrigation water demand arising from climate data sets and uncertainties arising from agricultural and climate data sets. We used contemporary maps of irrigation and crop distribution, and so do not account for variability or trends in irrigation area or cropping. We used two different global maps of irrigation and two different reconstructions of daily weather 1963–2002. Simulated global irrigation water demand varied by ∼30%, depending on …
Kamper Re-Visited Concert (Program), Klaus Kamper, Janet Bass Smith
Kamper Re-Visited Concert (Program), Klaus Kamper, Janet Bass Smith
Mammoth Cave Research Symposia
One hundred years ago, a young German engineer named Max Kämper, came as a visitor to Mammoth Cave. He became so enchanted with the cavern he obtained permission to map the vast system. For the next eight months Max, along with assistance from cave guide Ed Bishop, meticulously put together a highly detailed and accurate map revealing more of the cave than ever before. He probably never realized his work would be admired by generations to follow. Some admire its artistic expression of the cave. Others see beauty in its precision. Ultimately, it has become the iconic map for generations …
Slave Guide Legacy At Mammoth Cave, Joy Medley Lyons
Slave Guide Legacy At Mammoth Cave, Joy Medley Lyons
Mammoth Cave Research Symposia
Serving as guides and explorers at Mammoth Cave partially rescued four men from the obscurity of enslavement. Stephen Bishop, Materson Bransford, Nicholas Bransford and a young man named Alfred all had their very existence documented in the written journals and diaries of various nineteenth century Mammoth Cave visitors. They were physically described, their personalities contemplated, their intelligence gauged, their dialects imitated. At least one abolitionist characterized Stephen Bishop as a charismatic natural leader who could govern the citizenry of freed men in Liberia, should he choose to relocate there.
Max Kämper’S Introduction To The New World, Stanley D. Sides, M.D.
Max Kämper’S Introduction To The New World, Stanley D. Sides, M.D.
Mammoth Cave Research Symposia
Twenty-seven year old engineer Max Eduard Kämper arrived in America at 4:00 pm on May 16, 1907 and was greeted by a thunderstorm. His presumed goals were to study American manufacturing methods, learn English, and enrich himself musically. New York had so many German immigrants at the time that German was the second most common language spoken in the city. He stayed at the Belvedere House at the corner of 4th Avenue and 18th Street, and the next day visited acquaintances in Newark. He visited New York landmarks and May 20 visited the famed Hippodrome theater. He moved on May …
Searching For Max: The Engineer, The War And The World´S Longest Cave (Part 1), Bernd Kliebhan
Searching For Max: The Engineer, The War And The World´S Longest Cave (Part 1), Bernd Kliebhan
Mammoth Cave Research Symposia
In 1908 the German engineer Max Kämper mapped 35 miles of Mammoth Cave, KY. The “Kämper Map,” forgotten in the archives for half a century, is nowadays considered as a masterpiece of underground cartography. Little was known about Max Kämper despite several attempts of American speleo-historians. Most traces were wiped out in two world wars. Nevertheless the authors could find out details of the biography of Max Kämper in German archives. The text is based based upon the radio story “Suche nach Max,” broadcasted by Hessischer Rundfunk - hr1 December 26, 1999, audio download available on http://www.kliebhan.de/kaemper.htm
Mammoth Cave International Center For Science And Learning, Rick Toomey, Shannon R. Trimboli, Bob Ward, Mike Adams, Blaine Ferrell
Mammoth Cave International Center For Science And Learning, Rick Toomey, Shannon R. Trimboli, Bob Ward, Mike Adams, Blaine Ferrell
Mammoth Cave Research Symposia
The Mammoth Cave International Center for Science and Learning (MCICSL) is a cooperative venture of Mammoth Cave National Park and Western Kentucky University. Funding, logistical support, and governance of MCICSL are shared equally by both entities. MCICSL is part of a national network of research learning centers located within the National Park Service.
The goals of MCICSL and the other research learning centers are to:
I. Facilitate the use of parks for scientific inquiry.
II. Support science-informed decision making.
III. Communicate the relevance of and provide access to knowledge gained through scientific research.
IV. Promote science literacy and resource stewardship. …
The Lamps That Lit Their Way, Rick Olson
The Lamps That Lit Their Way, Rick Olson
Mammoth Cave Research Symposia
The distinctive lanterns used at Mammoth Cave from the middle 1800s until 1938 appear to be a locally derived design. Early whale oil railroad lanterns share some characteristics of the Mammoth Cave lanterns, but L&N Railroad lanterns do not appear to have influenced the design. At this time, the design pathway appears to lead from simple open-flame tin candle lanterns to the same lantern with a petticoat lamp affixed in place of the candle, and then finally to the font or oil container being soldered onto the lamp base as one unit. This basic Mammoth Cave lantern varied somewhat over …