Open Access. Powered by Scholars. Published by Universities.®

Physical Sciences and Mathematics Commons

Open Access. Powered by Scholars. Published by Universities.®

Natural Resources Management and Policy

2008

Institution
Keyword
Publication
Publication Type
File Type

Articles 1 - 30 of 233

Full-Text Articles in Physical Sciences and Mathematics

Photosynthetic Response Of Soybean To Twospotted Spider Mite (Acari: Tetranychydae) Injury, Adeney De Freitas Bueno, Regiane Cristina Oliveira De Freitas Bueno, Paul David Nabity, Leon George Higley, Odair Aparecido Fernandes Dec 2008

Photosynthetic Response Of Soybean To Twospotted Spider Mite (Acari: Tetranychydae) Injury, Adeney De Freitas Bueno, Regiane Cristina Oliveira De Freitas Bueno, Paul David Nabity, Leon George Higley, Odair Aparecido Fernandes

Papers in Natural Resources

The twospotted spider mite Tetranychus urticae Koch is a common pest on soybean plants. To clarify plantarthropod interaction on mite-soybean system, leaf fluorescence, photosynthetic responses to variable carbon dioxide levels, and chlorophyll content were evaluated. Significant photosynthetic rate reduction was observed due to stomatal limitation. Stomatal closure was the major plant physiological response. As a consequence, there was reduction in photosynthetic rates. Surprisingly, plants did not show chlorophyll content reduction associated with photosynthetic impairment. No differences in fluorescence data indicate that T. urticae injury did not impair the function of light harvesting and photoelectron transport. These results showed that T ...


Agenda: Managing Oil And Gas Development In Colorado: The New Cogcc Rules, University Of Colorado Boulder. Natural Resources Law Center Dec 2008

Agenda: Managing Oil And Gas Development In Colorado: The New Cogcc Rules, University Of Colorado Boulder. Natural Resources Law Center

Managing Oil and Gas Development in Colorado: The New COGCC Rules (December 16)

NRLC Hot Topic held on December 16, 2008 from 12:00 noon to 1:30 p.m. at the offices of Hogan and Hartson, Denver, Colorado.

Panelists from COGCC, the oil & gas industry, and environmental community, will present their perspectives on the soon-to-be-issued rules on oil and development in Colorado. Discussion and questions from attendees will follow.


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, Red Lodge Clearinghouse Dec 2008

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, 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 ...


Slides: Lower Arkansas Valley Super Ditch Company, Inc.: Water Leasing Program, Peter Nichols Dec 2008

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 Dec 2008

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


Slides: Pvid/Mwd Land Management, Crop Rotation And Water Supply Program, Ed Smith Dec 2008

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 Dec 2008

Hydrochemistry Of Wetlands Along The Platte River Near Ashland, Nebraska, Carrie L. Wiese

Dissertations & Theses in Natural Resources

No abstract provided.


A Targeted Conservation Approach For Improving Environmental Quality: Multiple Benefits And Expanded Opportunities, Lisa A. Schulte, Heidi Asbjornsen, Ryan Atwell, Chad E. Hart, Matthew J. Helmers, Thomas M. Isenhart, Randy Kolka, Matthew Z. Liebman, Jeri Neal, Matthew E. O'Neal, Silvia Secchi, Richard C. Schultz, Janette R. Thompson, Mark D. Tomer, John C. Tyndall Dec 2008

A Targeted Conservation Approach For Improving Environmental Quality: Multiple Benefits And Expanded Opportunities, Lisa A. Schulte, Heidi Asbjornsen, Ryan Atwell, Chad E. Hart, Matthew J. Helmers, Thomas M. Isenhart, Randy Kolka, Matthew Z. Liebman, Jeri Neal, Matthew E. O'Neal, Silvia Secchi, Richard C. Schultz, Janette R. Thompson, Mark D. Tomer, John C. Tyndall

Agriculture and Environment Extension Publications

Find out how targeted conservation practices can have the most impact on environmental quality while causing only a small change in overall agricultural production. Environmental benefits are discussed related to clean air and water, productive soils, diverse wildlife and plant habitat, and biological controls for crop protection.


The Distribution And Reproductive Success Of The Western Snowy Plover Along The Oregon Coast - 2008, David J. Lauten, Kathleen J. Castelein, David C. Bailey, Travis Lewis, Eleanor P. Gaines Dec 2008

The Distribution And Reproductive Success Of The Western Snowy Plover Along The Oregon Coast - 2008, David J. Lauten, Kathleen J. Castelein, David C. Bailey, Travis Lewis, Eleanor P. Gaines

Institute for Natural Resources Publications

From 1 April – 24 September 2008, we monitored the distribution, abundance and productivity of the federally Threatened Western Snowy Plover (Charadrius alexandrinus nivosus) along the Oregon coast. From north to south, we surveyed and monitored plover activity at Sutton Beach, Siltcoos River estuary, the Dunes Overlook, North Tahkenitch Creek, Tenmile Creek, Coos Bay North Spit, Bandon Beach, and New River. Our objectives for the Oregon coastal population in 2008 were to: 1) estimate the size of the adult Snowy Plover population, 2) locate plover nests, 3) continue selected use of miniexclosures (MEs) to protect nests from predators and evaluate whether ...


Integrating Landscapes That Have Experienced Rural Depopulation And Ecological Homogenization Into Tropical Conservation Planning, Aerin L. Jacob, Ismael Vaccaro, Raja Sengupta, Joel N. Hartter, Colin A. Chapman Dec 2008

Integrating Landscapes That Have Experienced Rural Depopulation And Ecological Homogenization Into Tropical Conservation Planning, Aerin L. Jacob, Ismael Vaccaro, Raja Sengupta, Joel N. Hartter, Colin A. Chapman

Geography Scholarship

If current trends of declining fertility rates and increasing abandonment of rural land as a result of urbanization continue, this will signal a globally significant transformation with important consequences for policy makers interested in conservation planning. This transformation is presently evident in a number of countries and projections suggest it may occur in the future in many developing countries. We use rates of population growth and urbanization to project population trends in rural areas for 25 example countries. Our projections indicate a general decline in population density that has either occurred already (e.g., Mexico) or may occur in the ...


The Environmental And Economic Benefits Of Highway Access Management: A Multivariate Analysis Using System Dynamics, Dan Andersen Dec 2008

The Environmental And Economic Benefits Of Highway Access Management: A Multivariate Analysis Using System Dynamics, Dan Andersen

UNLV Theses, Dissertations, Professional Papers, and Capstones

Better management of highway operations can be achieved, in part, by controlling vehicular access to adjacent properties and cross streets. This tactic, referred to as access management, has proven safety and operational benefits. However, doubts remain regarding its environmental and economic benefits.

I hypothesize that one environmental indicator, carbon emissions, will decrease with proper access management. Controlling access increases the speed at which vehicles travel, improving fuel efficiency and reducing carbon emissions. My hypothesis relative to financial impacts is that access management will neither help nor harm businesses. Controlling access can reduce travel time which has the effect of increasing ...


Atrazine Contamination And Suspended Sediment Transport Within Logsdon River, Mammoth Cave, Kentucky, Julie Eileen Schenck Brown Dec 2008

Atrazine Contamination And Suspended Sediment Transport Within Logsdon River, Mammoth Cave, Kentucky, Julie Eileen Schenck Brown

Masters Theses & Specialist Projects

Understanding the potential for karst aquifer contamination by sediment-sorbed pesticides is important for cave conservation efforts in agricultural landscapes. Flow rate, water quality parameters and suspended sediment concentrations were measured in Logsdon River, a ~10km karst conduit within the Turnhole Spring Groundwater Basin of Mammoth Cave National Park to determine characteristics of storm-period transport of sediment-sorbed atrazine through a conduit-flow karst aquifer.

Analysis of two independent precipitation events occurring in the Spring of 2008 from May 2-4 and May 27-29 demonstrated the rapid response of the Logsdon River to precipitation events with detections of atrazine increasing during the initial turbidity ...


Density And Abundance Of Mountain Plovers In Northeastern Montana, Theresa M. Childers, Stephen J. Dinsmore Dec 2008

Density And Abundance Of Mountain Plovers In Northeastern Montana, Theresa M. Childers, Stephen J. Dinsmore

Natural Resource Ecology and Management Publications

Estimates of local abundance for declining species provide important information necessary for conservation measures. We estimated the density and abundance of Mountain Plover (Charadrius montanus) in Phillips and Valley counties in north-central Montana in 2004 using distance sampling methodology. Sampling efforts were stratified to include active prairie dog (Cynomys sp.) colonies, an Area of Critical Environmental Concern (ACEC) specifically established for Mountain Plover, and all other habitats. The density of plovers was greatest on prairie dog colonies (7.20 ± 0.42 [SE] plovers/km2) and much lower on both the ACEC (1.60 ± 0.31 plovers/km2), and ...


Effects Of Nitrogen Fertilization On Biomass Yield And Quality In Large Fields Of Established Switchgrass In Southern Iowa, Usa, Roque Lemus, E. Charles Brummer, C. Lee Burras, Kenneth J. Moore, Michael F. Barker, Neil E. Molstad Dec 2008

Effects Of Nitrogen Fertilization On Biomass Yield And Quality In Large Fields Of Established Switchgrass In Southern Iowa, Usa, Roque Lemus, E. Charles Brummer, C. Lee Burras, Kenneth J. Moore, Michael F. Barker, Neil E. Molstad

Agronomy Publications

Switchgrass (Panicum virgatum L.) is a potential biofuel crop in the midwestern United States. The objective of this experiment was to test the effect of nitrogen application on biomass dry matter yield and fiber and mineral concentrations in large field plots in Lucas and Wayne counties in southern Iowa. Two established switchgrass fields with a previous history of limited management were evaluated from 1998 through 2002. Nitrogen was applied in the spring at rates of 0, 56, 112, and 224 kg N ha−1, and a single biomass harvest was made in autumn. Biomass production averaged across locations and N ...


Water Quality Impacts From Agricultural Land-Use In The Karst Groundwater Basin Of Qingmuguan, Chongqing, China, Ted W. Baker Dec 2008

Water Quality Impacts From Agricultural Land-Use In The Karst Groundwater Basin Of Qingmuguan, Chongqing, China, Ted W. Baker

Masters Theses & Specialist Projects

Karst regions are composed of soluble rock, often limestone, which leads to the formation of fissures, sinkholes and water flow conduits such as caves. Pollutants in karst waters tend to be quickly directed and concentrated into these subsurface conduits. As a result of this and other factors, water resources are especially sensitive to contamination and pollution in karst areas. Pollutant concentrations going into fluvial systems travelling through the subsurface in karst areas are often very similar to the concentrations arriving at outlets such as springs. Areas connected by karst conduit flows must be distinctly determined and special attention should be ...


Evaluation Of Striped Bass Stocks In Virginia, Monitoring And Tagging Studies, 2004-2008 Annual Report, 1 September 2007 - 31 September 2008, Philip W. Sadler, John M. Hoenig, Robert E. Harris, Matthew W. Smith, Rebecca J. Wilk, Lydia M. Goins Nov 2008

Evaluation Of Striped Bass Stocks In Virginia, Monitoring And Tagging Studies, 2004-2008 Annual Report, 1 September 2007 - 31 September 2008, Philip W. Sadler, John M. Hoenig, Robert E. Harris, Matthew W. Smith, Rebecca J. Wilk, Lydia M. Goins

Reports

This report presents the results of striped bass (Morone saxatilis) tagging and monitoring activities in Virginia during the period 1 September 2007 through 31 August 2008. It includes an assessment of the biological characteristics of striped bass taken from the 2008 spring spawning run, estimates of annual survival and fishing mortality based on annual spring tagging, and the results of the study that documents the prevalence of mycobacterial infections of striped bass in Chesapeake Bay. The information contained in this report is required by the Atlantic States Marine Fisheries Commission and is used to implement a coordinated management plan for ...


Modeling Natural Resources Scarcity And Proverty Effects On Fertility In Honduras, Nepal, And Tanzania, Ayoub Shaban Ayoub Nov 2008

Modeling Natural Resources Scarcity And Proverty Effects On Fertility In Honduras, Nepal, And Tanzania, Ayoub Shaban Ayoub

UNLV Theses, Dissertations, Professional Papers, and Capstones

This dissertation examines whether the vicious circle theory applies in three developing countries characterized by high population growth. According to the vicious circle theory, natural resource scarcity coupled with poverty leads to population growth via positive effects on fertility particularly in rural areas of developing countries. Population growth then leads to a further increase in natural resource scarcity, creating a "feedback loop." This is the first study to use micro-level data to test and control for endogeneity using a two-stage Probit model (IVPROBIT). The existing literature has largely failed to address endogeneity in the relationship between natural resource scarcity and ...


Final Report: Section 1. Introduction, Horsley Witten Group, Inc. Nov 2008

Final Report: Section 1. Introduction, Horsley Witten Group, Inc.

Phase I Final Report

No abstract provided.


Final Report: Cover, Acknowledgement, Table Of Contents, List Of Figures And List Of Tables, Horsley Witten Group, Inc. Nov 2008

Final Report: Cover, Acknowledgement, Table Of Contents, List Of Figures And List Of Tables, Horsley Witten Group, Inc.

Phase I Final Report

No abstract provided.


Final Report: Section 2. Data Collection, Horsley Witten Group, Inc. Nov 2008

Final Report: Section 2. Data Collection, Horsley Witten Group, Inc.

Phase I Final Report

No abstract provided.


Final Report: Section 5. Stream Buffer And Habitat Analysis, Horsley Witten Group, Inc. Nov 2008

Final Report: Section 5. Stream Buffer And Habitat Analysis, Horsley Witten Group, Inc.

Phase I Final Report

No abstract provided.


Final Report: Section 8. Phase Ii Scope Of Services, Horsley Witten Group, Inc. Nov 2008

Final Report: Section 8. Phase Ii Scope Of Services, Horsley Witten Group, Inc.

Phase I Final Report

No abstract provided.


Final Report: Appendix A. Water Balance Analysis Assumptions, Horsley Witten Group, Inc. Nov 2008

Final Report: Appendix A. Water Balance Analysis Assumptions, Horsley Witten Group, Inc.

Phase I Final Report

No abstract provided.


Final Report: Watershed Database, Horsley Witten Group, Inc. Nov 2008

Final Report: Watershed Database, Horsley Witten Group, Inc.

Phase I Final Report

No abstract provided.


Final Report: Water And Sewer Service Area Maps (By Town), Horsley Witten Group, Inc. Nov 2008

Final Report: Water And Sewer Service Area Maps (By Town), Horsley Witten Group, Inc.

Phase I Final Report

No abstract provided.


Final Report: Section 4. Sub-Watershed Analysis – Water Balance, Horsley Witten Group, Inc. Nov 2008

Final Report: Section 4. Sub-Watershed Analysis – Water Balance, Horsley Witten Group, Inc.

Phase I Final Report

No abstract provided.


Final Report: Section 3. Public Outreach, Horsley Witten Group, Inc. Nov 2008

Final Report: Section 3. Public Outreach, Horsley Witten Group, Inc.

Phase I Final Report

No abstract provided.


Final Report: Executive Summary, Horsley Witten Group, Inc. Nov 2008

Final Report: Executive Summary, Horsley Witten Group, Inc.

Phase I Final Report

No abstract provided.


Final Report: Data And Assessment (Full Report), Horsley Witten Group, Inc. Nov 2008

Final Report: Data And Assessment (Full Report), Horsley Witten Group, Inc.

Phase I Final Report

No abstract provided.


Final Report: Section 7. Conclusions And Additional Comments, Horsley Witten Group, Inc. Nov 2008

Final Report: Section 7. Conclusions And Additional Comments, Horsley Witten Group, Inc.

Phase I Final Report

No abstract provided.