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Articles 1 - 30 of 9865
Full-Text Articles in Physical Sciences and Mathematics
Leaf Optical And Indirect Lai Measurements In Wheat And Alfalfa At Maciv: Agmet Progress Report 89-4, E. A. Walter-Shea, B. L. Blad
Leaf Optical And Indirect Lai Measurements In Wheat And Alfalfa At Maciv: Agmet Progress Report 89-4, E. A. Walter-Shea, B. L. Blad
School of Natural Resources: Documents and Reviews
No abstract provided.
Wyoming Conservation Exchange: A Case Study In Grassroots Conservation Program Design, Kristiana Hansen, Sara Brodnax, Roger Coupal, Jennifer Lamb, Anne Mackinnon, Ginger Paige, Eric Peterson, Melanie Purcell
Wyoming Conservation Exchange: A Case Study In Grassroots Conservation Program Design, Kristiana Hansen, Sara Brodnax, Roger Coupal, Jennifer Lamb, Anne Mackinnon, Ginger Paige, Eric Peterson, Melanie Purcell
The Journal of Extension
This article describes the conception and development of a market-based conservation program in Wyoming whose purpose was threefold: to compensate landowners for good stewardship of their land and water resources; facilitate meaningful conservation; and encourage environmentally responsible energy development. The program was developed with strong stakeholder support against a backdrop of significant regulatory change. The project, called the Wyoming Conservation Exchange (WCE), represents a project-based alternative to more traditional program-based Extension efforts. This article evaluates ways in which the WCE can act as a road map—but also a cautionary tale—for similar Extension efforts in the future.
Fireflies At Rpa Natural Area Final Report, Olivia H. Bush, Sydney M. Shea, Sofia J. Gordon, Nick S. Wiebke
Fireflies At Rpa Natural Area Final Report, Olivia H. Bush, Sydney M. Shea, Sofia J. Gordon, Nick S. Wiebke
Final Reports in ENST 411: Environmental Community Projects
Our group worked alongside community partners Shaunna Barnhart and Jim Dunn during the Spring 2024 semester to assist with their annual event Fireflies at RPA Natural Area. RPA Natural Area is a local park in South Williamsport, Pennsylvania that was recently acquired by Southside Recreational Authority. Since taking over the park, the organization has begun hosting an event each July to educate the general public about firefly biology and conservation by showing a film and guiding attendees through a firefly tour through the park. Our goals for this project included creating physical educational materials to be used at the park …
Techniques And Trials In Pteridophyte Conservation And Cultivation, Jessica Bartel
Techniques And Trials In Pteridophyte Conservation And Cultivation, Jessica Bartel
Senior Theses and Projects
With the progressive nature of climate change conditions globally over the past century, there has been increasing focus on conservation of all species, but particularly those already endangered. Over 12,000 species of ferns live on Earth, and they do not produce seeds, so an investigation into their spores and how they reach maturity will allow us to preserve more genetic material in the future for these species. As a result, we investigated ex situ conservation and survivability of in vitro cultured gametophytes of within the genus Dryopteridaceae through herbarium sample germination rates across samples representing a wide age range ( …
Identifying Phytoremediation Performing Plant Species That Can Be Utilized In The Improvement Of Heavy Metal Contaminated Soils, Ashley Clark*, Samuel Mutiti
Identifying Phytoremediation Performing Plant Species That Can Be Utilized In The Improvement Of Heavy Metal Contaminated Soils, Ashley Clark*, Samuel Mutiti
Graduate Research Showcase
Heavy metal pollution is a problem associated with industrialization and development. Two major metals that are commonly mined and can enter the environment, which can jeopardize communities’ health, are copper (Cu) and lead (Pb). There are different options for reducing heavy metal pollution in the environment via remediation efforts, including physical, chemical, and biological methods. However, physical and chemical remediation can be costly and labor-intensive, making them unsuitable for regions that do not have the funds to utilize these practices. Biological remediation is a more cost-conservative practice that has been shown in many studies to be effective in the gradual …
Examining The Relationship Between Manning's Roughness Coefficient And Stage, Henry Holtkamp
Examining The Relationship Between Manning's Roughness Coefficient And Stage, Henry Holtkamp
Biological and Agricultural Engineering Undergraduate Honors Theses
This paper uses LOESS regression to predict Manning's roughness coefficient to calculate flows in natural stream channels. Manning's roughness coefficient can introduce variability into Manning's equation, potentially destabilizing results. Utilizing LOESS to find n based on backcalculated n from collected discharge vs. stage information is the best way to acquire accurate Manning's roughness coefficient values at a variety of flows. Book values tend to drastically overestimate which can have wide-ranging implications for water allocation, flood management, maintaining environmental flows, and maintaining water quality.
Rice Biomass Response To Various Phosphorus Fertilizers In A Phosphorus-Deficient Soil Under Simulated Furrow-Irrigation, Jonathan B. Brye
Rice Biomass Response To Various Phosphorus Fertilizers In A Phosphorus-Deficient Soil Under Simulated Furrow-Irrigation, Jonathan B. Brye
Crop, Soil and Environmental Sciences Undergraduate Honors Theses
Wastewater-recovered phosphorus (P), in the form of the mineral struvite (MgNH4PO4⋅6H2O), may provide a sustainable alternative to rapidly decreasing rock phosphate reserves. Struvite can be generated via chemical and/or electrochemical precipitation methods, potentially reducing the amount of P runoff to aquatic ecosystems. The objective of this greenhouse tub study was to evaluate the effects of chemically- and electrochemically precipitated struvite (CPST and ECST, respectively) on above- and belowground plant response in a hybrid rice cultivar (Gemini 214, RiceTec) grown using furrow-irrigation compared to other common fertilizer-P sources [i.e., triple super phosphate (TSP) and diammonium phosphate (DAP)] in a P-deficient silt …
Threats From Climate Change Are Increasing For Natural World Heritage Sites, Martin Falk, Eva Hagsten
Threats From Climate Change Are Increasing For Natural World Heritage Sites, Martin Falk, Eva Hagsten
GSTC Academic Symposium - In conjunction with the GSTC Global Conference Sweden April 23, 2024
The aim of the paper is to analyse the occurrence and intensity of threats to Natural World Heritage Sites from climate change as assessed by IUCN experts. The data comes from the Conservation Outlook Assessment database, which covers 250 sites for three time periods (2014, 2017 and 2020). The threat of climate change is broadly defined and includes temperature extremes, rapidly disappearing glaciers, coral bleaching, droughts, desertification, rising temperatures and rising sea levels. Simultaneous probit and ordered models with individual site effects are used to analyse the occurrence and intensity of both a perceived actual and a potential threat.
The …
Arkansas Soil Erosion And Conservation Methods In Ornamental Landscapes, Abby J. Cutsinger
Arkansas Soil Erosion And Conservation Methods In Ornamental Landscapes, Abby J. Cutsinger
ATU Research Symposium
This study will attempt to identify the best soil erosion mitigation methods for Arkansas ornamental landscape settings by comparing the strengths and weaknesses of known techniques. Since soil is not a renewable resource, we must apply conservation practices wherever possible, not just in agricultural settings. To determine the most effective erosion prevention techniques, this study will review soil studies conducted by the NRCS and NASA, as well as articles on best practices observed in ornamental landscape and agricultural industries. These are analyzed by comparing and contrasting techniques against known problems with Arkansas soil to determine which methods are most effective. …
Navigating Murky Waters: State-Level Strategies For Wetland Preservation And Tile Drainage Regulation After Sackett V. Epa, Caleb M. Swanson
Navigating Murky Waters: State-Level Strategies For Wetland Preservation And Tile Drainage Regulation After Sackett V. Epa, Caleb M. Swanson
Honors Thesis
Wetlands are some of the world’s most valuable ecosystems, serving as provisioners of species habitat, carbon sequestration, flood mitigation, water quality purification, and other ecosystem services. Human development has resulted in substantial wetland loss the world over. In the 1970s, the United States Congress passed the Clean Water Act, giving the EPA broad authority over wetland protection. However, in the summer of 2023, the United States Supreme Court decided Sackett v. EPA, limiting the EPA’s jurisdiction over wetlands to those indistinguishably connected to generally recognized “Waters of the United States” and removing federal protection for millions of acres of wetlands, …
Agricultural Groundcover Update February 2024, Justin Laycock
Agricultural Groundcover Update February 2024, Justin Laycock
Natural resources published reports
- About 92% of the grainbelt had adequate (more than 50%) vegetative groundcover to prevent wind erosion in February 2024.
- Nearly 8% of the grainbelt (1,193,400 ha) had less than 50% groundcover, which is inadequate to prevent wind erosion.
- The northern grainbelt had the highest risk of wind erosion and 16.5% of this farmland had inadequate groundcover.
- Less than 0.7% of the grainbelt had a high to very high risk of wind erosion because groundcover was less than 30%.
Ecology And Conservation Of Diamondback Terrapins In Virginia, Cypress Ambrose
Ecology And Conservation Of Diamondback Terrapins In Virginia, Cypress Ambrose
Undergraduate Honors Theses
The diamondback terrapin (Malaclemys terrapin) is the only turtle species native to North America with specific morphological and physiological adaptations to estuarine environments. Along with many other pressures contributing to population declines, terrapins frequently become trapped and drown as bycatch in crab pots used in the commercial and recreational blue crab (Callinectes sapidus) fishery. A wealth of evidence supports the use of inexpensive bycatch reduction devices (BRDs) that can be attached to the entrances of these traps, which leads to a marked decrease in terrapin bycatch while not reducing crab catch dramatically. Virginia is the only …
Yulong Snow Mountain National Field Observation And Research Station For Cryosphere And Sustainable Development
Bulletin of Chinese Academy of Sciences (Chinese Version)
No abstract provided.
Long Term Monitoring And Research On Temperate Glaciers And Related Environments Provide Technological Support For Regional Sustainable Development, Shijin Wang, Shichang Kang, Tuo Chen, Yuanqing He, Meixue Yang, Quanlian Li, Hewen Niu, Tao Pu, Binglin Zhang, Yanjun Che, Wanqin Guo, Xingguo Yan, Xinggang Ma, Rongjun Wang
Long Term Monitoring And Research On Temperate Glaciers And Related Environments Provide Technological Support For Regional Sustainable Development, Shijin Wang, Shichang Kang, Tuo Chen, Yuanqing He, Meixue Yang, Quanlian Li, Hewen Niu, Tao Pu, Binglin Zhang, Yanjun Che, Wanqin Guo, Xingguo Yan, Xinggang Ma, Rongjun Wang
Bulletin of Chinese Academy of Sciences (Chinese Version)
After nearly 20 years of development, the Yulong Snow Mountain National Field Observation and Research Station for Cryosphere and Sustainable Development, Chinese Academy of Sciences has built a field comprehensive observation system and data online visualization platform of temperate glacier and environment integrating observation, research, demonstration, and service. Based on the long-term positioning monitoring of temperate glaciers and the environment, and focusing on key scientific issues related to sustainable development in temperate glacier areas, this study deeply analyzes the mechanism of changes in temperate glaciers, reveals the hydrological, microorganisms, and climatic effects of temperate glacier change, evaluates the effectiveness of …
Trading Policy, Practice And Prospect On Marine Carbon Sequestration In China, Jingming Dong, Zifei Liu, Limei Chen
Trading Policy, Practice And Prospect On Marine Carbon Sequestration In China, Jingming Dong, Zifei Liu, Limei Chen
Bulletin of Chinese Academy of Sciences (Chinese Version)
Marine carbon sequestration trading is the inherent requirement and effective mechanism for marine eco-civilization development, maritime economic strategy. The research compares and analyzes the policies and practices of China’s marine carbon sequestration trading, and looks forward its future development tendency. It is pointed points out that under the framework of the national Dual Carbon goals, especially in “1+N” policy, the top-level system of China’s marine carbon sequestration trading has initially formed. Many relevant industry standards have been introduced and implemented at the national level. Then at the local level, some regions have introduced and implemented marine carbon sequestration calculation guidelines …
Challenges To Reindeer, Reciprocity, And Indigenous Sami Sovereignty Amidst The Impact Of Green Energy Developments, Lisa Heikka-Huber
Challenges To Reindeer, Reciprocity, And Indigenous Sami Sovereignty Amidst The Impact Of Green Energy Developments, Lisa Heikka-Huber
IdeaFest: Interdisciplinary Journal of Creative Works and Research from Cal Poly Humboldt
The Indigenous people of Europe known as the Sami, (also spelled Saami) many of whom live throughout the world, have continued to maintain active nomadic communities today as their ancestors did. A wide spanning region of Northern Europe’s Arctic Zone or Sampi often referred to as Fennoscandia, encompasses four countries, Norway, Sweden, Finland, and Russia’s Kola Peninsula (Roland & Löffler, 2012). The nomadic Sami people follow the migration pathways of their reindeer herds through the wilderness bi-annually. This paper will discuss many perspectives, including the battle Sami people and other Indigenous communities have endured while combating green energy development from …
Accuracy Of Nitrate Hysteresis And Flushing For Agricultural Watersheds In The Midwest, Noah Rudko, Sara K. W. Mcmillian, Jane Frankenberger, François Birgand
Accuracy Of Nitrate Hysteresis And Flushing For Agricultural Watersheds In The Midwest, Noah Rudko, Sara K. W. Mcmillian, Jane Frankenberger, François Birgand
Graduate Industrial Research Symposium
Storm event-based metrics, such as hysteresis (HI) and flushing (FI), are used to differentiate nitrate pathways and sources, which is essential for watershed management. Estimations of these event-based metrics typically use high frequency (15-minute – hourly) measurements, but daily data are also used due to their greater availability. To date, there has been no study assessing how using lower frequency samples affect the accuracy of HI and FI, which could skew interpretation of potential nutrient pathways and sources. We used continuous measurements of nitrate collected at 9 watersheds throughout the Midwest spanning 448 storms. HI and FI were estimated from …
Comparative Life Cycle Assessment Of Copper Production, Xiaohan Wu
Comparative Life Cycle Assessment Of Copper Production, Xiaohan Wu
Graduate Industrial Research Symposium
Copper demand will surge significantly in the context of global renewable energy technology implementation, but its production is an energy-intensive process. It is crucial to choose the best production method to reduce environmental damage in terms of the enormous copper supply. This research develops a multi-criteria life cycle assessment model for the three main copper production routes- pyrometallurgy, hydrometallurgy, and bioleaching. We complied material and energy flow data to assess each route's life cycle greenhouse gas (GHG) emissions, cost, and resource efficiency. Results indicate bioleaching emits the least GHG emissions (4.09 kg-CO2 eq/kg copper) among the three routes. Hydrometallurgy is …
Publications And Other Works By R. F. Diffendal, Jr., Robert F. Diffendal Jr.
Publications And Other Works By R. F. Diffendal, Jr., Robert F. Diffendal Jr.
School of Natural Resources: Faculty Publications
Articles
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Updated March 2024
Improve Governance System Of National Parks, Build The World‘S Largest National Park System With High Quality, Baorong Huang
Improve Governance System Of National Parks, Build The World‘S Largest National Park System With High Quality, Baorong Huang
Bulletin of Chinese Academy of Sciences (Chinese Version)
Improving the governance system of national parks is an inevitable requirement for China’s high-quality construction of the world’s largest national park system. This study analyzes the main challenges and problems faced by China’s national park governance based on long-term investigation on national parks and national park system pilot areas. Under the overall logic of modernization of China’s national governance system and governance capabilities, drawing on international experiences in sound governance of regional and watershed public goods and national parks, this study proposes a theoretical framework for establishing a “four in one” national park governance system in China, including a comprehensive …
Regime Of National Park Group Based On Protected Area System In Tibetan Plateau, Dong Chen, Yafei Wang, Dengsheng Wu, Jie Fan
Regime Of National Park Group Based On Protected Area System In Tibetan Plateau, Dong Chen, Yafei Wang, Dengsheng Wu, Jie Fan
Bulletin of Chinese Academy of Sciences (Chinese Version)
China’s national park reform has entered a new stage of promoting reform based on the protected area system. The national park team of the second comprehensive scientific investigation and research on the Tibetan Plateau (TP) took the lead in putting forward the construction plan of the TP protected area, which is dominated by national park in area and function. The TP national park group, including “small group” which refer to national park, and “large group” which refer to different protected areas, innovates the long-term mechanism for the construction of national ecological security barriers on TP. The national park group requires …
Experience And Enlightenment Of Eu Natura 2000 Protected Area Network, Ling Tang, Baorong Huang, Tong Jin, Xuetian Hu
Experience And Enlightenment Of Eu Natura 2000 Protected Area Network, Ling Tang, Baorong Huang, Tong Jin, Xuetian Hu
Bulletin of Chinese Academy of Sciences (Chinese Version)
The EU Natura 2000 protected area network, covering nearly 19% of the land and 10% of the sea in the EU, has played an important role in protecting biodiversity and enhancing regional socio-economic well-being, and is regarded as the most successful protected area network in the world. Its successful experience is mainly reflected in five aspects. (1) The adoption of regional biodiversity conservation legislation and the promotion of compliance with the law by member countries to promote the construction of the protected area network. (2) The establishment of a decision-making and implementation mechanism that combines the EU resolution process and …
Problems And Suggestions Of Building Scientific Decision-Making And Advisory Mechanism Of National Parks—Governance-Based Perspective, Yu Wei, Duowei Cheng, Yi Wang
Problems And Suggestions Of Building Scientific Decision-Making And Advisory Mechanism Of National Parks—Governance-Based Perspective, Yu Wei, Duowei Cheng, Yi Wang
Bulletin of Chinese Academy of Sciences (Chinese Version)
National parks are multi-factor, multi-functional and multi-dimensional complexes, which makes them difficult to follow the traditional administration and management modes, and need to explore the construction of a modernized governance system. An important step in enhancing the effectiveness of governance is to establish a reasonable, and efficient scientific decision-making and consultation mechanism. China has made remarkable progress in scientific decision-making and consultation in national parks. However, there are still some problems with the national parks’ decision-making process and effectiveness due to vague definition of authority and responsibility, dependence on departmentalized management paths, and inadequate upward and downward transmission of information …
Agricultural Groundcover Update January 2024, Justin Laycock
Agricultural Groundcover Update January 2024, Justin Laycock
Natural resources published reports
Summary
- About 94% of the grainbelt had adequate (more than 50%) vegetative groundcover to prevent wind erosion in January 2024.
- In the northern half of the grainbelt, a larger-than-average area has 51–60% groundcover, which is expected to decrease to below 50% over the coming months.
- Just under 6% of the grainbelt (855,000 ha) had less than 50% groundcover, which is inadequate to prevent wind erosion. West Midlands Ag Soil Zone had the highest risk of wind erosion and 14.5% of this farmland had inadequate groundcover.
- Less than 0.5% of the grainbelt had a high to very high risk of wind …
Monitoring The Abundance Of American Shad And River Herring In Virginia's Rivers: 2023 Annual Report, Eric J. Hilton, Patrick E. Mcgrath, Ashleigh Magee, Timothy Hoyt
Monitoring The Abundance Of American Shad And River Herring In Virginia's Rivers: 2023 Annual Report, Eric J. Hilton, Patrick E. Mcgrath, Ashleigh Magee, Timothy Hoyt
Reports
This report describes the results of the twenty-sixth year of a continuing study to estimate the relative abundance and assess the status of American shad (Alosa sapidissima) stocks in Virginia by monitoring the spawning runs in the James, York and Rappahannock rivers in spring 2023, evaluating hatchery programs, and contributing to coast-wide assessments (ASMFC 2007, ASMFC 2020). We also report on two fisheryindependent monitoring programs using anchor gillnets in the Rappahannock River (year 6) and a major tributary of the James River, the Chickahominy River (year 9), to determine relative abundance and stock structure for the adult spawning run of …
A Coupled Model Of Population, Poaching, And Economic Dynamics To Assess Rhino Conservation Through Legal Trade, Henry Doyle, Kylie Champagne, Ditto Rajpal, Grace Seebeck, David J. Gerberry
A Coupled Model Of Population, Poaching, And Economic Dynamics To Assess Rhino Conservation Through Legal Trade, Henry Doyle, Kylie Champagne, Ditto Rajpal, Grace Seebeck, David J. Gerberry
Spora: A Journal of Biomathematics
Rhinoceros populations in Africa are in peril largely due to the high value of their horns and the poaching that ensues. The strategy of legalizing the international trade of rhino horn is receiving increased support among both the people and government officials in Africa. Many in the international conservation community remain opposed to the idea. The legalization strategy is straightforward in theory: legalizing the trade of rhino horn will introduce a large quantity of horn to the market, the increased supply will lead to lower prices for rhino horn, and lower prices will reduce the overall poaching pressure these animals …
If You Build It, Will They Come? Assessing Habitat Quality For Marsh Birds At Created Marshes In Southeastern Louisiana, Katherine Aylett Lipford
If You Build It, Will They Come? Assessing Habitat Quality For Marsh Birds At Created Marshes In Southeastern Louisiana, Katherine Aylett Lipford
LSU Master's Theses
Wetland loss occurs at an alarming pace globally, with extremely high rates along the northern Gulf of Mexico. Louisiana loses a football field of wetland every 100 minutes: that is 77,000 m2 of wetland bird habitat lost daily. In Louisiana, marsh creation projects combat wetland loss, and while wildlife habitat is often used as a justification for restoration, wildlife receives little to no consideration during and after construction. Habitat characteristics such as site-specific hydrology, vegetation composition, and habitat structure affect the abundance of wetland birds and understanding these features is crucial to creating habitat that will benefit birds. My …
Fish Assemblage Structure In Great Lakes Coastal Wetlands Over Ten Years, Matthew S. Silverhart
Fish Assemblage Structure In Great Lakes Coastal Wetlands Over Ten Years, Matthew S. Silverhart
Masters Theses
Coastal wetlands in the Laurentian Great Lakes are important habitats for many fish species. The geographic scale of the watershed and the diversity of land uses in the region result in substantial environmental variation among coastal wetlands. During 2011-2020, annual surveys were conducted as part of the Great Lakes Coastal Wetland Monitoring Program (GLCWMP) to better understand the status and trends of coastal wetlands. Fish sampling consisted of fyke netting in monodominant vegetation zones. During this time, 1225 unique monodominant plant zones in coastal wetlands were sampled, resulting in 584,125 fishes captured that consisted of 113 different species. Yellow Perch …
Fauna, Flora, And Land Cover Changes Over The Last Two Decades In The Mobile-Tensaw River Delta, Gabriel De Oliveria, Steven R. Schultze, Guilherme Mataveli
Fauna, Flora, And Land Cover Changes Over The Last Two Decades In The Mobile-Tensaw River Delta, Gabriel De Oliveria, Steven R. Schultze, Guilherme Mataveli
Technical Reports
A technical report documenting ecosystem changes to the Mobile-Tensaw River Delta region due to urban expansion over approximately two decades (2001-2019).
Current Challenges And Future Of Agricultural Genomes To Phenomes In The Usa, C. K. Tuggle, J. L. Clarke, B. M. Murdoch, E. Lyons, N. M. Scott, B. Benes, J. D. Campbell, H. Ching, C. L. Daigle, S. D. Choudhury, J.C. M. Dekkers, J.R.R. Dorea, D. S. Erti, B. O. Fragomeni, J. E. Fulton, C. R. Guadagno, D. E. Hagen, A. S. Hess, L. M. Kramer, C. J. Lawrence-Dill, A. E. Lipka, T. Lubberstedt, F. M. Mccarthy, P. S. Schnable
Current Challenges And Future Of Agricultural Genomes To Phenomes In The Usa, C. K. Tuggle, J. L. Clarke, B. M. Murdoch, E. Lyons, N. M. Scott, B. Benes, J. D. Campbell, H. Ching, C. L. Daigle, S. D. Choudhury, J.C. M. Dekkers, J.R.R. Dorea, D. S. Erti, B. O. Fragomeni, J. E. Fulton, C. R. Guadagno, D. E. Hagen, A. S. Hess, L. M. Kramer, C. J. Lawrence-Dill, A. E. Lipka, T. Lubberstedt, F. M. Mccarthy, P. S. Schnable
School of Natural Resources: Faculty Publications
No abstract provided.