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Articles 1 - 11 of 11
Full-Text Articles in Physical Sciences and Mathematics
Atrazine Runoff In The Blue River Basin: Geomorphology, Rainfall, And Agronomic Practices, Kundan Dhakal
Atrazine Runoff In The Blue River Basin: Geomorphology, Rainfall, And Agronomic Practices, Kundan Dhakal
Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research
Atrazine concentrations in the Big Blue River Basin (BRB) in Nebraska and Kansas periodically exceed the U.S. EPA Maximum Contaminant Level (MCL) of 3 µg L-1. The present study is focused on watershed variables influencing surface runoff of atrazine. The assessment includes the impact of corn and sorghum planting progress (indicating atrazine application), rainfall, antecedent soil water content, and soil restrictive layer on stream-measured weekly atrazine load in independent BRB subwatersheds for 1997 - 2004. Maximum atrazine loading occurred after most of the corn had been planted but during sorghum planting from mid-May to early June, immediately following …
The Prairie Naturalist Volume 36, No.4 December 2004
The Prairie Naturalist Volume 36, No.4 December 2004
The Prairie Naturalist
ROADSIDE BIAS IN POINT COUNT SURVEYS AT ARROWWOOD NATIONAL WILDLIFE REFUGE, NORTH DAKOTA ▪ J. S. Dieni and P. Scherr
HISTORY OF GREATER SAGE-GROUSE IN THE DAKOTAS: DISTRIBUTION AND POPULATION TRENDS ▪ . J. T. Smith, L. D. Flake, K. F. Higgins, and G. D. Kobriger
PATCH USE BY A MONOPHAGOUS HERBIVORE IN FRAGMENTED PRAIRIE LANDSCAPES ▪ . M. J. St. Pierre and S. D. Hendrix
SNOWSHOE HARE OCCURRENCE AND WINTER HABITAT ON THE MISSOURI COTEAU IN NORTH DAKOTA ▪ R. K. Murphy 243
HIGH ABUNDANCE OF NESTING LONG-EARED OWLS IN NORTH DAKOTA ▪ R. K. Murphy, L. J. Rosenfield, …
The Prairie Naturalist Volume 36, No.3 September 2004
The Prairie Naturalist Volume 36, No.3 September 2004
The Prairie Naturalist
OVERLAND MOVEMENTS AND HABITAT USE OF MALLARD BROODS DEPARTING OVERWATER NESTING STRUCTURES ▪ J. D. Stafford, L. D. Flake, and P. W. Mammenga
NEST SITE CHARACTERISTICS OF EASTERN WILD TURKEY IN NORTHEASTERN SOUTH DAKOTA ▪ R. D. Shields and L. D. Flake
WHITE-TAILED DEER INFECTEUWITH STAPHYLOCOCCUS HYICUS IN SOUTH DAKOTA ▪ T. J. Zimmerman, J. A. Jenks, and A. E. Pillatzki
CLOSTRIDIUM PERFRINGENS TYPE A IN A FREE-RANGING FAWN? ▪ T. J. Brinkman, J. A. Jenks, C. S. DePerno, and B. S. Haroldson
BUFFLEHEAD BREEDING ACTIVITY IN SOUTH-CENTRAL NORTH DAKOTA ▪ G. A. Knutsen and J. C. King
POTENTIAL MULTIPLE …
Science-Based Organic Farming: A Resource For Educators, Charles A. Francis, Mindi Schneider, Brad Kindler
Science-Based Organic Farming: A Resource For Educators, Charles A. Francis, Mindi Schneider, Brad Kindler
Publications from the Center for Applied Rural Innovation (CARI)
Organic farming is an important and growing part of the United States food system. The organic sector has grown by at least 20% per year for the past two decades, and currently shows no indication of slowing in this growth. There is increasing consumer concern about where and how food is produced, and people want to be assured access to safe and healthy food products. Interest and concern about food security, and discussion about the merits of a local food system as compared to the vulnerable globalized marketplace are also becoming increasingly important. In Nebraska we have only limited local …
The Prairie Naturalist Volume 36, No.2 June 2004
The Prairie Naturalist Volume 36, No.2 June 2004
The Prairie Naturalist
PREDICTING NEONATAL AGE OF WHITE-TAILED DEER IN THE NORTHERN GREAT PLAINS . . T. J. Brinkman, K. L. Monteith, J. A. Jenks, and C. S. DePemo
DUCK NESTING ON ROTATIONAL AND CONTINUOUS GRAZED PASTURES IN NORTH DAKOTA . R. K. Murphy, D. J. Schindler, and R. D. Crawford
MORPHOLOGY OF LESSER PRAIRIE-CHICKENS IN KANSAS ▪ C. A. Hagen, J. C. Pitman, R. J. Robel, and R. D. Applegate
DAILY AND SEASONAL BEHAVIOR OF BISON ON AN OKLAHOMA TALLGRASS PRAIRIE . E. J. Maichak, K. L. Schuler, and M. E. Payton
CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA 2003 ▪ R. N. …
The Prairie Naturalist Volume 36, No.1 March 2004
The Prairie Naturalist Volume 36, No.1 March 2004
The Prairie Naturalist
DUCK NESTING SUCCESS IN NORTH DAKOTA ROAD RIGHT-OF-WAYS ▪ J. Walker, S. S. Stephens, M. S. Lindberg, and J. 1. Rotella
DID TALLGRASS PRAIRIE EXTEND INTO PENNSYLVANIA? ▪ D. C. Laughlin
INFLUENCE OF PREY ABUNDANCE ON RAPTORS IN TALLGRASS PRAIRIE ▪ A. W. Reed, G. A. Kaufman, D. A. Rintoul, and D. W. Kaufman
AMERICAN BITTERN NESTING IN THE SAN JOAQUIN VALLEY, CALIFORNIA ▪ L. C. Carroll and F. A. de Szalay
THE FLORA OF THE COTTONWOOD LAKE STUDY AREA, STUTSMAN COUNTY, NORTH DAKOTA ▪ . D. M. Mushet, N. H. Euliss Jr., S. P. Lane, and C. M. Goldade …
Bank Stabilization, Riparian Land Use And The Distribution Of Large Woody Debris In A Regulated Reach Of The Upper Missouri River, North Dakota, Usa, Ted R. Angrandi, E William Schweiger, David W. Bolgrien, Peter Ismert, Tony Selle
Bank Stabilization, Riparian Land Use And The Distribution Of Large Woody Debris In A Regulated Reach Of The Upper Missouri River, North Dakota, Usa, Ted R. Angrandi, E William Schweiger, David W. Bolgrien, Peter Ismert, Tony Selle
United States Environmental Protection Agency: Staff Publications
Large woody debris (LWD) is an important component of ecosystem structure and function in large floodplain rivers. We examined associations between LWD distribution and riparian land use, bank stabilization (e.g. riprap revetment), local channel geomorphology, and distance downriver from the dam in the Garrison Reach, a regulated reach of the upper Missouri River in North Dakota, USA. We conducted a survey of shoreline-associated LWD in the reach during typical summer flow conditions. Reachwide LWDdensity was 21.3 pieces km^-1 of shoreline, of which most pieces (39%) were ‘beached’ between the waterline and the bank full level, 31% of pieces had evidence …
Comparison Of Modis And Avhrr 16-Day Normalized Difference Vegetation Index Composite Data, Kevin P. Gallo, Lei Ji, Brad Reed, John Dwyer, Jeffrey Eidenshink
Comparison Of Modis And Avhrr 16-Day Normalized Difference Vegetation Index Composite Data, Kevin P. Gallo, Lei Ji, Brad Reed, John Dwyer, Jeffrey Eidenshink
School of Natural Resources: Faculty Publications
Normalized difference vegetation index (NDVI) data derived from visible and near-infrared data acquired by the MODIS and AVHRR sensors were compared over the same time periods and a variety of land cover classes within the conterminous USA. The relationship between the AVHRR derived NDVI values and those of future sensors is critical to continued long term monitoring of land surface properties. The results indicate that the 16-day composite values are quite similar over the 23 intervals of 2001 that were analyzed, and a linear relationship exists between the NDVI values from the two sensors. The composite AVHRR NDVI data were …
Mammals Of Carlsbad Caverns National Park, New Mexico, Kenneth N. Geluso, Keith Geluso
Mammals Of Carlsbad Caverns National Park, New Mexico, Kenneth N. Geluso, Keith Geluso
Bulletin of the University of Nebraska State Museum
Carlsbad Cavern was established as a national park on 14 May 1930, after being designated as a national monument for nearly seven years. The park is located in southeastern New Mexico, and today it encompasses 189.3 km2 (73.1 mi2). Eighty-eight percent of the park lies in the rugged Guadalupe Mountains, while 12% is located on relatively flat land along the base of the mountains. The park contains a variety of habitats ranging from desert scrub at the lowest elevations to coniferous woodlands on the highest summits. Five months after Carlsbad Cavern was declared a national monument, Vernon …
Fire In Southern Appalachians: Fuels, Stand Structure And Oaks, David L. Loftis, Mary A. Arthur, Rex Mann, Jeffrey Lewis
Fire In Southern Appalachians: Fuels, Stand Structure And Oaks, David L. Loftis, Mary A. Arthur, Rex Mann, Jeffrey Lewis
JFSP Research Project Reports
Managers responsible for maintaining the diversity and productivity of Southern Appalachian forests are increasingly turning to prescribed fire as an important management tool in oak dominated forests. The decision to use fire with increasing frequency and spatial extent is based, in part, on an emerging sense of the prehistoric significance of fire in this landscape and its potential to control the proliferation of fire-sensitive competitors in contemporary forests. While it is well documented that fire has been an important ecological force in Southern Appalachian forests for a very long time, there has been little research to demonstrate that prescribed fire …
Reduced Acetylcholine Receptor Density, Morphological Remodeling, And Butyrylcholinesterase Activity Can Sustain Muscle Function In Acetylcholinesterase Knockout Mice, Michael Adler, Heather A. Manley, Angela L. Purcell, Sharad S. Deshpande, Tracey A. Hamilton, Robert K. Kan, George Oyler, Oksana Lockridge, Ellen G. Duysen, Robert E. Sheridan
Reduced Acetylcholine Receptor Density, Morphological Remodeling, And Butyrylcholinesterase Activity Can Sustain Muscle Function In Acetylcholinesterase Knockout Mice, Michael Adler, Heather A. Manley, Angela L. Purcell, Sharad S. Deshpande, Tracey A. Hamilton, Robert K. Kan, George Oyler, Oksana Lockridge, Ellen G. Duysen, Robert E. Sheridan
US Army Research
The vertebrate neuromuscular junction is designed for rapid transmission of excitatory signals for initiation of muscle contraction.5 Among the features responsible for the high throughput of this synapse are the close proximity of the presynaptic and postsynaptic membranes,10 the direct coupling of acetylcholine (ACh) binding to the opening of the ion channel associated with the nicotinic acetylcholine receptor (nAChR),27 the brief open time of this channel,21,27 and the presence of cholinesterase (ChE) for hydrolysis of ACh.21,30 At the endplate, there are two distinct ChEs for transmitter hydrolysis: acetylcholinesterase (EC 3.1.1.7, AChE) and butyrylcholinesterase (EC 3.1.1.8, BChE).33 Both enzymes can …