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Articles 121 - 134 of 134
Full-Text Articles in Physical Sciences and Mathematics
Explorations In Off-Higway Vehicle (Ohv) Recreation: A High School Driver Education Extension, Allison Brody, Jennell M. Miller, Sky Mcclain, Katharine August
Explorations In Off-Higway Vehicle (Ohv) Recreation: A High School Driver Education Extension, Allison Brody, Jennell M. Miller, Sky Mcclain, Katharine August
Education about the Environment
The lessons within this curriculum have been designed to meet the following goals:
● To increase knowledge about the natural world OHV recreationists will encounter in their exploration of Southern Nevada;
● To increase knowledge of responsible use of OHVs and principles of Tread Lightly! and Leave No Trace (both are nonprofit organizations dedicated to increasing awareness about how to minimize impacts while enjoying public and private lands);
● To increase awareness, knowledge, and understanding of land ethics;
● To allow youth to analyze personal values regarding recreational experiences, including OHV use.
Finicky Fish Finish... Last! Pre-Visit Lessons -- Support Materials (Grade 5), Discover Mojave: Forever Earth
Finicky Fish Finish... Last! Pre-Visit Lessons -- Support Materials (Grade 5), Discover Mojave: Forever Earth
Curriculum materials (FE)
In “Finicky Fish Finish…Last!” students explore what has happened to the Colorado River and the reasons why it is so difficult for the razorback sucker to thrive in a changed environment. Working as ichthyologists (fish biologists) at Lake Mead, students collect water quality data such as temperature, pH, and clarity -- to determine whether current habitat conditions are sufficient for survival of young razorback suckers. Students observe and identify non-native fish in Lake Mead as they learn how the razorback sucker interacts with these neighbors. Students assess whether Lake Mead is still a good habitat for razorback suckers. Using the …
Terpenes And Carbohydrate Source Influence Rumen Fermentation, Digestibility, Intake, And Preference In Sheep, J. J. Villalba, F. D. Provenza, K. C. Olson
Terpenes And Carbohydrate Source Influence Rumen Fermentation, Digestibility, Intake, And Preference In Sheep, J. J. Villalba, F. D. Provenza, K. C. Olson
Green Canyon Environmental Research Area, Logan Utah
We hypothesized that toxins and nutrients in foods interact to influence foraging behavior by herbivores. Based on this hypothesis we predicted that 1) terpenes in big sagebrush (Artemisia tridentata) influence intake and preference in sheep for diets varying in sources of nonstructural (barley grain) and structural (sugar beet pulp) carbohydrates, and 2) these effects are due to the differential effects of terpenes on fermentation products and apparent digestibility of each class of carbohydrates. Lambs were fed 2 isoenergetic and isonitrogenous diets with varying proportions of the same ingredients (beet pulp- and barley grain-based diet) or offered a choice between the …
You Should Run For Office (Video), Kevin O'Brien, Grace Drake
You Should Run For Office (Video), Kevin O'Brien, Grace Drake
All Maxine Goodman Levin School of Urban Affairs Publications
No abstract provided.
Fire Does Not Alter Vegetation In Infertile Prairie, Johannes M.H. Knops
Fire Does Not Alter Vegetation In Infertile Prairie, Johannes M.H. Knops
School of Biological Sciences: Faculty Publications
The paradigm in prairie ecology is that fire is one of the key factors deter-mining vegetation composition. fire can impact grassland ecosystems in various ways, including changing plant species composition and inducing nitro-gen loss. I found that 17 years of different burning frequencies in infertile grassland had only a minor impact on the vegetation composition and diversity. The only major impact from increasing the frequency of fires was a decrease of Poa pratensis abundance. However, other plant species did not r-spond to the change in Poa abundance. This result contrasts with previous studies in savannas and more productive grasslands, where …
2006 Vegetation Survey Of The Valentine National Wildlife Refuge, Robert F. Steinauer
2006 Vegetation Survey Of The Valentine National Wildlife Refuge, Robert F. Steinauer
Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts
The Valentine National Wildlife Refuge (VNWR), located in north central Cherry County, was established in 1934. Tolstead (1942) studied the grasslands of northern Cherry County, (including the Valentine National Wildlife Refuge) with a focus on describing the dominant species of grassland types and determining the relationships between vegetation distribution and environmental variables and management practices. Additional studies have been conducted by refuge staff on the effects of management, particularly grazing, on vegetation structure. The purpose of this study was to: (1) document all vascular plant species present on the refuge; (2) collect data on rare plant species and high-quality native …
Water Resources Year In Review - Winter 2006, Vol. 19, No. 2, Annis Water Resource Institute
Water Resources Year In Review - Winter 2006, Vol. 19, No. 2, Annis Water Resource Institute
AWRI Reviews
No abstract provided.
Fisheries Research Report No 154 - The Development Of A Rigorous Sampling Methodology For A Long-Term Annual Index Of Recruitment For Finfish Species From South-Western Australia., Daniel J. Gaughan, Suzanne G. Ayvazian, G Nowara, M Craine
Fisheries Research Report No 154 - The Development Of A Rigorous Sampling Methodology For A Long-Term Annual Index Of Recruitment For Finfish Species From South-Western Australia., Daniel J. Gaughan, Suzanne G. Ayvazian, G Nowara, M Craine
Fisheries research reports
Final FRDC Report - 1999/153.
This study has determined the optimal strategies to achieve statistically robust indices of recruitment of five key finfish species in south-western Australia. For another two species such indices could not be established. The sampling strategies developed will initially focus on the most appropriate location, month, and lunar phase, after which fine tuning of the sampling activity will be undertaken with respect to time of day, tide height, weather conditions etc. A significant outcome from the project is that five finfish species have a sampling strategy for recruits that can be utilized as a monitoring program …
Inside Alternatively Powered Vehicles: The Problems And The Possibilities, Roxanne Greitz Miller
Inside Alternatively Powered Vehicles: The Problems And The Possibilities, Roxanne Greitz Miller
Education Faculty Articles and Research
This article explores alternatively powered vehicles.
The Geoprofile Metadata, Exposure Of Instruments, And Measurement Bias In Climatic Record Revisited, Rezaul Mahmood
The Geoprofile Metadata, Exposure Of Instruments, And Measurement Bias In Climatic Record Revisited, Rezaul Mahmood
School of Natural Resources: Faculty Publications
No abstract provided.
Impacts Of Irrigation On 20th Century Temperature In The Northern Great Plains, Rezaul Mahmood
Impacts Of Irrigation On 20th Century Temperature In The Northern Great Plains, Rezaul Mahmood
School of Natural Resources: Faculty Publications
No abstract provided.
Puncturing Ability Of Idealized Canine Teeth: Edged And Non-Edged Shanks, Patricia W. Freeman, Cliff A. Lemen
Puncturing Ability Of Idealized Canine Teeth: Edged And Non-Edged Shanks, Patricia W. Freeman, Cliff A. Lemen
School of Natural Resources: Faculty Publications
Idealized edged and non-edged indenters, mimicking canine teeth, were used to puncture thin materials and thick materials. Less force was needed for the edged (triangular in cross section) indenter to penetrate thin Mylar, paper, leather, beetle elytra and turkey skin than the non-edged (circular in cross-section) indenter. Oak, grass and magnolia leaves responded equally to both indenters. In thick materials, the edged indenter punctured beetles, shrimp, bananas, and chicken flesh more easily than the non-edged indenter. Apple, tomato and avocado were punctured equally well. The edged indenter directs cracks at the corners so that the material can fold away in …
Shoreline Evolution, Chesapeake Bay And Potomac River Shorelines, Northumberland County, Virginia, C. Scott Hardaway Jr., Donna A. Milligan, Lyle M. Varnell, Christine A. Wilcox, George R. Thomas
Shoreline Evolution, Chesapeake Bay And Potomac River Shorelines, Northumberland County, Virginia, C. Scott Hardaway Jr., Donna A. Milligan, Lyle M. Varnell, Christine A. Wilcox, George R. Thomas
Reports
Shoreline evolution is the change in shore position through time. In fact, it is the material resistance of the coastal geologic underpinnings against the impinging hydrodynamic (and aerodynamic) forces. Along the shores of Chesapeake Bay, it is a process-response system. The processes at work include winds, waves, tides and currents, which shape and modify coastlines by eroding, transporting and depositing sediments. The shoreline is commonly plotted and measured to provide a rate of change but it is as important to understand the geomorphic patterns of change. Shore analysis provides the basis to know how a particular coast has changed through …
Virginia Game Fish Tagging Program Annual Report 2005, John A. Lucy, C.M. Bain Iii
Virginia Game Fish Tagging Program Annual Report 2005, John A. Lucy, C.M. Bain Iii
Reports
The Virginia Game Fish Tagging Program (VGFTP), initiated in 1995, coordinates tagging and a tag-recapture fish database generated through contributed efforts of a dedicated corps of trained marine anglers. Through 2005, the program’s database includes nearly 88,000 records of tag-released fish and approximately 8,300 recaptures.