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Articles 1 - 30 of 64
Full-Text Articles in Environmental Sciences
Effects Of Temperature Anomalies On The Palmer Drought Severity Index In The Central United States, Q. Steven Hu, Garry D. Wilson
Effects Of Temperature Anomalies On The Palmer Drought Severity Index In The Central United States, Q. Steven Hu, Garry D. Wilson
School of Natural Resources: Faculty Publications
The purpose of this study is to improve our understanding of temperature and precipitation effects on the Palmer Drought Severity Index (PDSI). Both theoretical and observational analyses were applied to separate and compare temperature and precipitation effects on PDSI. The results showed that because of the dependence of PDSI on the ‘climatologically appropriate rainfall’, which is a function of time and varies with surface air temperature, the PDSI can be equally affected by temperature and precipitation, when both have similar magnitudes of anomalies. Calculations using observational data further illustrated the temperature influence on PDSI in different climate regions in the …
Ecological And Physiological Factors Affecting Nesting Success Of Burrowing Owls In Buffalo Gap National Grassland, Randall L. Griebel
Ecological And Physiological Factors Affecting Nesting Success Of Burrowing Owls In Buffalo Gap National Grassland, Randall L. Griebel
School of Natural Resources: Dissertations, Theses, and Student Research
The western burrowing owl (Athene cunicularia hypugea) has been declining throughout much of its range, and in some areas, quite dramatically. In the Great Plains region, these declines appear to be closely associated with declines in prairie dog numbers. Most research to date has taken place on relatively small, fragmented prairie dog colonies. The objectives of this study were to analyze burrowing owl reproductive performance (i.e., clutch size, brood size, and number fledged), and nestling body condition in relation to nest level and colony level factors in Buffalo Gap National Grassland, South Dakota. Buffalo Gap contains large prairie …
The Prairie Naturalist Volume 32, No.4 December 2000
The Prairie Naturalist Volume 32, No.4 December 2000
The Prairie Naturalist
LOCATING NESTS OF BIRDS IN GRASSLANDS FROM A MOBILE TOWER BLIND ▪ . T. F. Fondell, S. T. Hoekman, and L J. Ball
OBSERVATIONS ON SMALL MAMMALS RECOVERED FROM OWL PELLETS FROM NEBRASKA ▪ J J Huebschman, P. W Freeman, H. H. Genoways, and J A. Gubanyi
DlSTRIBUTION, HABITAT USE, AND NESTING SUCCESS OF HENSLOW'S SPARROW IN OKLAHOMA ▪ D. L. Reinking, D. A. Wiedenfeld, D. H. Wolfe, and R. W. Rohrbaugh, Jr.
REPRODUCTIVE SUCCESS OF PIPING PLOVERS ON ALKALI LAKES IN NORTH DAKOTA AND MONTANA ▪ R. K. Murphy, M. J. Rabenberg, M. L. Sondreal, B. R. Casler, and …
The Effectiveness Of The Asos, Mmts, Gill, And Crs Air Temperature Radiation Shields*, K. G. Hubbard, X. Lin, E.A. Walter-Shea
The Effectiveness Of The Asos, Mmts, Gill, And Crs Air Temperature Radiation Shields*, K. G. Hubbard, X. Lin, E.A. Walter-Shea
School of Natural Resources: Faculty Publications
Periodic upgrades of air temperature measurement systems in surface weather station networks cause data discontinuities. From a climatological viewpoint, it is necessary to evaluate the air temperature data discontinuities when air temperature radiation shields are upgraded. This study was undertaken to investigate the effectiveness of four common air temperature radiation shields including the Automated Surface Observing System (ASOS), the Maximum–Minimum Temperature System (MMTS), the Gill, and the Cotton Region Shelter (CRS) shields. The solar radiation shielding effectiveness for each shield under typical grass ground surface and different artificial surfaces (black, white, and aluminum) were investigated. The shield effectiveness was evaluated …
Horse Creek Fen, Birdwood Creek And Kelly Ranch Inventory, Robert F. Steinauer
Horse Creek Fen, Birdwood Creek And Kelly Ranch Inventory, Robert F. Steinauer
Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts
Horse Creek Fen preserve is a complex of wetland communities (Sandhills fen, Sandhills freshwater marsh, and northern sedge wet meadow) associated with Horse Creek, a ditched stream that drains the Allen Valley fen. Fen vegetation on the preserve is limited to approximately 20 acres on the western boundary of the preserve where it abuts the eastern end of the Allen Valley fen (Steinauer et al. 1996). The fen vegetation is surrounded primarily by Sandhills freshwater marsh, which in turn is surrounded by northern sedge wet meadow. Additional Sandhills freshwater marsh occurs near the eastern boundary of the preserve. The eastern …
Correlations Between Burrowing Owl And Black-Tailed Prairie Dog Declines: A 7-Year Analysis, Martha J. Desmond, Julie A. Savidge, Kent M. Eskridge
Correlations Between Burrowing Owl And Black-Tailed Prairie Dog Declines: A 7-Year Analysis, Martha J. Desmond, Julie A. Savidge, Kent M. Eskridge
School of Natural Resources: Faculty Publications
Concern over the status of species associated with prairie dog colonies has increased with the recent proposed listing of black-tailed prairie dogs (Cynomys ludovicianus). We monitored burrowing owl (Athene cunicularia) populations and prairie dog densities in 17 black-tailed prairie dog colonies in the Nebraska panhandle between 1990 and 1996. All prairie dog colonies were controlled at least once during the study. We observed a 63% decline in nesting pairs of burrowing owls and significant declines in burrow densities. Results indicated a time lag in owl response to changes in active burrow densities. However, in the later …
Resource Law Notes Newsletter, No. 50, Fall 2000, University Of Colorado Boulder. Natural Resources Law Center
Resource Law Notes Newsletter, No. 50, Fall 2000, University Of Colorado Boulder. Natural Resources Law Center
Resource Law Notes: The Newsletter of the Natural Resources Law Center (1984-2002)
No abstract provided.
The Aquaculture Of Non-Endemic Species In Western Australia Silver Perch (Bidyanus Bidyanus), Tina Thorne, H. G. Brayford
The Aquaculture Of Non-Endemic Species In Western Australia Silver Perch (Bidyanus Bidyanus), Tina Thorne, H. G. Brayford
Fisheries management papers
The development of commercial aquaculture of a non-endemic species such as silver perch raises a number of important issues relating to translocation. These include the potential of the introduced species to: impact on genetic diversity; introduce disease; and impact on - the natural environment; and - the biodiversity of native species. This Management Paper has been drafted in liaison with the Department of Environmental Protection in accordance with the principles of rish assessment, taking into account the above issues. It is considered that the implementation of this policy will protect the natural environment and native fish species. It will also …
Environmental Finance Charette, Hyannis Park On Lewis Bay: A Case Study, New England Environmental Finance Center, Environmental Finance Center Of University Of Maryland
Environmental Finance Charette, Hyannis Park On Lewis Bay: A Case Study, New England Environmental Finance Center, Environmental Finance Center Of University Of Maryland
Water
The town of Yarmouth currently has a $30 million septic sludge treatment plant and transport lines in place. The vast majority of the dwellings and businesses in the Hyannis Park area are on septic systems that are viable and Title 5 compliant, regardless of age. Conventional, "non-failing" septic systems, however, were never intended to remove form their effluent nutrients such as nitrogen. These have become recognized as an environmental threat only as our understanding of the impacts of excess nutrients on ecosystems has increased in recent decades.
A Flexible K-12 Weather Data Collection And Education Program, Mark A. Mesarch, S. J. Meyer, David C. Gosselin
A Flexible K-12 Weather Data Collection And Education Program, Mark A. Mesarch, S. J. Meyer, David C. Gosselin
School of Natural Resources: Faculty Publications
The Nebraska Earth Science Education Network (NESEN) is an organization within the University of Nebraska-Lincoln whose objectives are to: 1) promote and enhance K-12 earth science education in Nebraska, 2) improve teacher knowledge and understanding so that students become better informed about the complexities of environmental and natural resources issues and 3) enhance the transfer of earth science information to the K-12 teaching community (Gosselin, Mohlman, Mesarch & Meyer, 1996; Gosselin et al., 1999). To achieve this last objective NESEN developed the Students and Teachers Exchanging Data, Information and Ideas (STEDII) program with the help of support from the National …
The Prairie Naturalist Volume 32, No.3 September 2000
The Prairie Naturalist Volume 32, No.3 September 2000
The Prairie Naturalist
SPECIAL FEATURE: LESSER PRAIRIE-CHICKEN
PREFACE ▪ C. E. Braun
NOTE ON SPECIAL FEATURES
POPULATION STATUS AND MANAGEMENT OF LESSER PRAIRIE-CHICKEN IN COLORADO ▪ K. M. Giesen
STATUS OF NESTING HABITAT FOR LESSER PRAIRIE-CHICKEN IN NEW MEXICO ▪ J. A. Bailey, J. Klingel, and C. A. Davis
STATUS OF THE LESSER PRAIRIE-CHICKEN IN NEW MEXICO, 1999 ▪ . J. A. Bailey, and S. O. Williams III
DISTRIBUTION AND POPULATION TREND OF LESSER PRAIRIE-CHICKEN IN KANSAS ▪ W. E. Jensen, D A. Robinson. Jr and R. D. Applegate
REVIEW OF THE HISTORICAL AND PRESENT STATUS OF THE LESSER PRAIRIE-CHICKEN (Tympanuchus pallidicinctus) IN …
Ecology Of Elk In The Pine Ridge Region Of Northwestern Nebraska: Seasonal Distribution, Characteristics Of Wintering Sites, And Herd Health, Michael A. Cover
Ecology Of Elk In The Pine Ridge Region Of Northwestern Nebraska: Seasonal Distribution, Characteristics Of Wintering Sites, And Herd Health, Michael A. Cover
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
Environmental Survey Of Potential Sand Resource Sites, Offshore Delaware And Maryland : Final Report, Virginia Institute Of Marine Science
Environmental Survey Of Potential Sand Resource Sites, Offshore Delaware And Maryland : Final Report, Virginia Institute Of Marine Science
Reports
- Technical summary / Carl H. Hobbs
- Non-technical summary / Carl H. Hobbs
- Part. 1. Benthic mapping and resource evaluation of potential sand mining areas, offshore Mayland and Delaware, 1998-1999 / G.R. Cutter and R.J. Diaz
- Part. 2. Transitory species (vertebrate nekton) / John A. Musick
- Part. 3. Literature survey of reproductive finfish and ichthyoplankton present in proposed sand mining locations within the Middle Atlantic Bight / John Olney, Donna Marie Bilkovic
- Part. 4. Potential modifications to waves due to dredging and other oceanographic considerations / Jerome P.-Y. Maa, Sung C. Kim
- Part. 5. Maryland-Delaware shoreline : long-term trends and short-term …
Rapidan River Watershed Riparian Restoration Assessment, Friends Of The Rappahannock, Center For Coastal Resources Management, Virginia Institute Of Marine Science
Rapidan River Watershed Riparian Restoration Assessment, Friends Of The Rappahannock, Center For Coastal Resources Management, Virginia Institute Of Marine Science
Reports
A canoe based GPS survey was conducted of 111 miles of the Rapidan River and its major tributaries. The purpose of the survey was to collect the necessary baseline data to support the prioritization of stream reaches in the Rapidan River watershed for future streambank and/or riparian corridor restoration projects.
The data were post-processed and overlaid onto digital color orthophoto quarter quad images at a scale of 1: 12,000 (resolution = 2 meters). Areas with critical erosion and/or riparian restoration needs were prioritized based on the analyzed features.
Evaluation And Assessment Of Agrichemical Contaminants In The Creighton, Ne Area, Mark E. Burbach, Roy F. Spalding
Evaluation And Assessment Of Agrichemical Contaminants In The Creighton, Ne Area, Mark E. Burbach, Roy F. Spalding
School of Natural Resources: Faculty Publications
The Lewis and Clark Natural Resources District (LCNRD) has reported elevated nitrate- nitrogen (NO3-N) concentrations in ground water near Creighton, NE. The U.S. Environmental Protection Agency has set a maximum contaminant level (MCL) of 10 mg/L for NO3-N in public water supplies. NO3-N in the city of Creighton municipal drinking water wells and several rural domestic and irrigation wells have exceeded the MCL. The city of Creighton has constructed a reverse-osmosis water treatment system at a cost of $1.1 million to reduce the NO3-N concentration below the MCL in its water supply. In response to this NO3-N contamination problem the …
The Eos Prototype Validation Exercise (Prove) At Jornada: Overview And Lessons Learned, J. L. Privette, G. P. Asner, J. Conel, K. F. Huemmrich, R. Olson, A. Rango, A. F. Rahman, K. Thome, Elizabeth A. Walter-Shea
The Eos Prototype Validation Exercise (Prove) At Jornada: Overview And Lessons Learned, J. L. Privette, G. P. Asner, J. Conel, K. F. Huemmrich, R. Olson, A. Rango, A. F. Rahman, K. Thome, Elizabeth A. Walter-Shea
School of Natural Resources: Faculty Publications
The Earth Observing System (EOS) instrument teams must validate the operational products they produce from the Terra spacecraft data. As a pilot for future validation activities, four EOS teams (MODIS, MISR, ASTER, and Landsat-7) and community experts conducted an 11-day field campaign in May 1997 near Las Cruces, NM. The goals of the Prototype Validation Exercise (PROVE) included (1) gaining experience in the collection and use of field data for EOS product validation; (2) developing coordination, measurement, and data-archiving protocols; and (3) compiling a synoptic land and atmospheric data set for testing algorithms. PROVE was held at the USDA-Agricultural Research …
Trophic Dynamics And Pollution Effects In Cave Springs Cave, Arkansas, G. O. Graening, Arthur V. Brown
Trophic Dynamics And Pollution Effects In Cave Springs Cave, Arkansas, G. O. Graening, Arthur V. Brown
Technical Reports
No abstract provided.
Status Survey Of Aquatic Cave Fauna In Arkansas, G. O. Graening, Arthur V. Brown
Status Survey Of Aquatic Cave Fauna In Arkansas, G. O. Graening, Arthur V. Brown
Technical Reports
No abstract provided.
Wetland Seed Banks: Research In Natural And Created Wetlands, Douglas A. Deberry, James E. Perry, Virginia Institute Of Marine Science, Wetlands Program
Wetland Seed Banks: Research In Natural And Created Wetlands, Douglas A. Deberry, James E. Perry, Virginia Institute Of Marine Science, Wetlands Program
Reports
No abstract provided.
A Quality Future For Recreational Fishing On The West Coast., West Coast Recreational Fishing Working Group
A Quality Future For Recreational Fishing On The West Coast., West Coast Recreational Fishing Working Group
Fisheries management papers
The West Coast Region between Kalbarri and Augusta offers a wide range of recreational fishing opportunities.The West Coast Region also receives more fishing pressure than any other, with an estimated 380 000 anglers fishing each year. Already, the signs of a fishery under pressure are showing. Catch rates of dhufish around inshore reef systems such as the Three-mile are a far cry from the 1950s and 60s when people beachlaunched wooden dinghies to fish the inshore waters for these highly prized fish. Increasing pressure on stocks has led to growing community concerns that the future quality of recreational fishing is …
Airflow Characteristics Of Commonly Used Temperature Radiation Shields*, X. Lin, Kenneth G. Hubbard, George E. Meyer
Airflow Characteristics Of Commonly Used Temperature Radiation Shields*, X. Lin, Kenneth G. Hubbard, George E. Meyer
School of Natural Resources: Faculty Publications
The air temperature radiation shield is a key component in air temperature measurement in weather station networks; however, it is widely recognized that significant errors in the measured air temperature exist due to insufficient airflow past the air temperature sensor housed inside the shield. During the last several decades, the U.S. National Weather Service has employed a number of different shields in air temperature measurements. This paper focuses on the airflow characteristics inside air temperature shields including the Maximum–Minimum Temperature System (MMTS), the Gill shields, and the Cotton Region Shelter (CRS).
Average airspeed profiles and airflow efficiency inside the shields …
Extralimital Records Of The Mexican Free-Tailed Bat (Tadarida Brasilensis Mexicana) In The Central United States And Their Biological Significance, Hugh H. Genoways, Patricia W. Freeman, Cary Grell
Extralimital Records Of The Mexican Free-Tailed Bat (Tadarida Brasilensis Mexicana) In The Central United States And Their Biological Significance, Hugh H. Genoways, Patricia W. Freeman, Cary Grell
School of Natural Resources: Faculty Publications
Two new records of Tadarida brasiliensis mexicana are reported from Nebraska. The literature records of this taxon from the central United States are summarized. In this region of North America, these bats occupy a “natal range” where the species carries on regular reproductive activities and the populations are relatively stable, including California, Arizona, New Mexico, Texas, and Oklahoma. To the north of the natal range of T. b. mexicana is a “pioneering zone” where, under favorable conditions, the species is capable of reproducing and conducting its normal activities. The pioneering zone of the Mexican free-tailed bat includes Barber and Comanche …
Shifting Distributional Patterns Of Mammals In Nebraska, Russell A. Benedict, Hugh H. Genoways, Patricia W. Freeman
Shifting Distributional Patterns Of Mammals In Nebraska, Russell A. Benedict, Hugh H. Genoways, Patricia W. Freeman
School of Natural Resources: Faculty Publications
New distributional records are presented for 20 species of mammals in Nebraska. The majority of these records appear to represent changes in geographic distribution rather than just better sampling in poorly known areas. One group of mammals, including the opossum, northern myotis, evening bat, red bat, woodchuck, white-footed mouse, and gray fox, is expanding westward, probably in response to increasing woodlands along river systems. Another group, including the meadow vole, masked shrew, and least weasel, is expanding southward, possibly in response to new prey species and changing microclimates. The eastern woodrat appears to be expanding northward in eastern Nebraska. The …
Changes In Primary Production Of Pawnee Reservoir As A Result Of Reservoir Aging, Kristopher A. Fischer
Changes In Primary Production Of Pawnee Reservoir As A Result Of Reservoir Aging, Kristopher A. Fischer
School of Natural Resources: Dissertations, Theses, and Student Research
No abstract provided.
Aquaculture Plan For The Houtman Abrolhos Islands, Fisheries Western Australia
Aquaculture Plan For The Houtman Abrolhos Islands, Fisheries Western Australia
Fisheries management papers
The objective of this aquaculture plan is to : Provide a sound basis for developing a new aquaculture industry in the Abrolhos Islands, while at the same time conserving the unique environment of the islands for present and future generations, and minimising conflict between aquaculture and existing and future users of the islands.
Resource Law Notes Newsletter, No. 49, Spring Issue, Mar. 2000, University Of Colorado Boulder. Natural Resources Law Center
Resource Law Notes Newsletter, No. 49, Spring Issue, Mar. 2000, University Of Colorado Boulder. Natural Resources Law Center
Resource Law Notes: The Newsletter of the Natural Resources Law Center (1984-2002)
No abstract provided.
The Prairie Naturalist Volume 32, No.2 June 2000
The Prairie Naturalist Volume 32, No.2 June 2000
The Prairie Naturalist
EVALUATING MORNING AND AFTERNOON ELECTROFISHING CATCH RATES FOR LARGEMOUTH BASS IN KANSAS LAKES C. A. Cox, and R. D. Schultz
DYNAMICS OF GREEN ASH WOODLANDS IN THEODORE ROOSEVELT NATIONAL PARK ▪ L. R. Irby, J. E. Norland, M. G. Sullivan, J. A. Westfall, Jr., and P. Anderson
STATUS OF THE ARKANSAS DARTER IN SOUTH-CENTRAL KANSAS AND ADJACENT OKLAHOMA ▪ M. E. Eberle, and W J. Stark
CHRISTMAS BIRD COUNTS FOR NORTH DAKOTA 1999 R. N. Randall
AN OBSERVATION OF POSSIBLE BROOD ADOPTION IN RUDDY DUCKS ▪ J. T. Pelayo
MAXILLARY CANINE TEETH IN A NORTH DAKOTA DEER ▪ W. F. …
An Introduction To Wetland Seed Banks, Douglas A. Deberry, James E. Perry, Virginia Institute Of Marine Science, Wetlands Program
An Introduction To Wetland Seed Banks, Douglas A. Deberry, James E. Perry, Virginia Institute Of Marine Science, Wetlands Program
Reports
No abstract provided.
Dynamic Fluvial Systems And Gravel Progradation In The Himalayan Foreland, Nicholas Brozovic, Douglas W. Burbank
Dynamic Fluvial Systems And Gravel Progradation In The Himalayan Foreland, Nicholas Brozovic, Douglas W. Burbank
Daugherty Water for Food Global Institute: Faculty Publications
Although the large-scale stratigraphy of many terrestrial foreland basins is punctuated by major episodes of gravel progradation, the relationships of such facies to hinterland tectonism and climate change are often unclear. Structural reentrants provide windows into older and more proximal parts of the foreland than are usually exposed, and thus provide key insights to earlier phases of foreland evolution. Our magnetostratigraphic studies show that, although the major lithofacies preserved within the Himachal Pradesh structural reentrant in northwestern India resemble Neogene facies in Pakistan, they have a much greater temporal and spatial variability. From 11.5 to 7 Ma, major facies boundaries …
The Prairie Naturalist Volume 32, No.1 March 2000
The Prairie Naturalist Volume 32, No.1 March 2000
The Prairie Naturalist
FRESHWATER MUSSELS (BIVALVIA: UNIONOIDEA) IN STREAMS OF NORTHWESTERN KANSAS ▪ S. M. Bergman, M. E. Eberle, and B. K. Obenneyer
PISCIVOROUS BIRD DEPREDATION AT NORTHERN MINNESOTA AQUACULTURE FACILITIES ▪ G. K. Bridgman, E. H. Rave, and J. M. Rafferty 17
EFFECTS OF MOWED TRAILS ON DEPREDATION OF ARTIFICIAL NESTS IN GRASSLAND ▪ D. J. Rosenblatt, J. J. Newton, and E . J. Heske
PLANT COMMUNITY PATTERNS ON UPLAND PRAIRIE IN THE EASTERN NEBRASKA SANDHILLS ▪ W. H. Schacht, J. D. Volesky, D. Bauer, A. J. Smart, and E. M. Mousel
AMERICAN BITTERN DEPREDATES SORA ▪ J. E. Austin, and M. …