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Articles 1201 - 1230 of 2238
Full-Text Articles in Natural Resource Economics
Invasive Species And E-Commerce, Invasive Species Advisory Committee
Invasive Species And E-Commerce, Invasive Species Advisory Committee
National Invasive Species Council
ISSUE
Internet commerce (hereafter e-commerce) is a growing and vital part of the United States economy. Total e-commerce sales in the United States for 2011 totaled $194 billion, an increase of 16% over 2010. From 2002 to 2011, the proportion of reported e-commerce sales in the U. S. grew from about 1.4% to 5.5% of total retail sales (United States Census Bureau News 2012). Globally, e-commerce is expected to increase at a rate of 13.5% annually, amounting to $1.4 trillion in yearly sales by 2015 (Enright 2011). A portion of this activity includes the sale and trade of living organisms. …
The Full Cost Of Renewables: Managing Wind Integration Costs In California, William Savage
The Full Cost Of Renewables: Managing Wind Integration Costs In California, William Savage
Pomona Senior Theses
Wind power will be an important component of California's aggressive strategies to meet its greenhouse gas reduction targets by the year 2020. However, the costs of integrating wind power's variable and uncertain output are often ignored. I argue that California must take prudent action to understand, minimize, and allocate wind integration costs. A review of numerous studies suggests that for wind penetration levels below 20%, integration costs should remain modest. However, costs are heavily dependent on market structure, and I suggest numerous ways that California can optimize its market design to manage wind integration costs.
Improving Woody Biomass Estimation Efficiency Using Double Sampling, David L. Parrott, John M. Lhotka, Songlin Fei, B. Scott Shouse
Improving Woody Biomass Estimation Efficiency Using Double Sampling, David L. Parrott, John M. Lhotka, Songlin Fei, B. Scott Shouse
Forestry and Natural Resources Faculty Publications
Although double sampling has been shown to be an effective method to estimate timber volume in forest inventories, only a limited body of research has tested the effectiveness of double sampling on forest biomass estimation. From forest biomass inventories collected over 9,683 ha using systematic point sampling, we examined how a double sampling scheme would have affected precision and efficiency in these biomass inventories. Our results indicated that double sample methods would have yielded biomass estimations with similar precision as systematic point sampling when the small sample was ≥ 20% of the large sample. When the small to large sample …
Roger Williams Park Edible Forest Garden, Mark S. Scialla
Roger Williams Park Edible Forest Garden, Mark S. Scialla
Senior Honors Projects
An edible forest garden is a low-maintenance system that uses edible native and regionally-adapted plants arranged in beneficial relationships to meet human, wildlife and ecosystem needs. The forest garden in Roger Williams Park will transform underutilized urban land into a highly productive parcel producing market-viable fruits, nuts, vegetables, medicine and fiber. Forest gardens mimic natural forest systems in architecture and complexity. The design follows ecological principles to create a system that promotes biodiversity and enhances the surrounding ecosystem. This project also demonstrates the potential to grow food and create land-based livelihoods in the city.
Located on the edge of a …
Sediment Removal From The San Gabriel Mountains, Mary C. Ferguson
Sediment Removal From The San Gabriel Mountains, Mary C. Ferguson
Pitzer Senior Theses
The issue of sediment removal from the San Gabriel Mountains has been a complex issue that has created problems with beach replenishment, habitat destruction and the need to spend millions of dollars at regular intervals to avoid safety hazards. Most recently 11 acres of riparian habitat, including 179 oaks and 70 sycamores, were removed for sediment placement. Other sites including Hahamongna Watershed Park and La Tuna Canyon also face a similar fate. This thesis questions: How did we get to this point of destroying habitat to dump sediment which is viewed as waste product? What are the barriers for creating …
Aquculture And Deforestation In The Peruvian Amazon, Gator Halpern
Aquculture And Deforestation In The Peruvian Amazon, Gator Halpern
Pomona Senior Theses
This study examines whether aquaculture has the potential to reduce deforestation in the Peruvian Amazon. The natural resources of the Peruvian Amazon are subject to extreme pressures due to increases in subsistence farming, cattle ranching, and logging in the region. The resulting loss of biodiversity has affected the delicate soil balance that is characteristic of the Amazon, and has contributed to water pollution as well as erosion (Guerra et al. 2001). One of the highest rates of deforestation in the Amazon basin can be found at the foothills of the eastern Andes (Lepers et al. 2005), which includes the area …
Extraction Politics: An Economic Analysis Of Rare Earth Elements, Aishwarya Subbaraman '12
Extraction Politics: An Economic Analysis Of Rare Earth Elements, Aishwarya Subbaraman '12
Honor Scholar Theses
Rare earth elements (REE) have critical applications in high-technology industries such as defense and clean energy. China holds more than 90% of the current production capacity for these elements and in September, 2010 announced plans to cut its exports of the elements by 72%. Amid a rush to develop substitutes for the materials, in 2012 the USS. E.U., and Japan have filed a case against China in the WTO. This paper will analyze the extraction of rare earth clement (REE) extraction from the joint perspective of Economics and Political Science. After a brief backgrounder provided in Section 1, Section 2 …
Régulations De L’Usage Et De La Possession De Terre: Exploration De L'Efficacité Des Règles Officielles Concernant La Gestion De Terre Et Perceptions Des Lois Par Les Habitants D’Andranomena Dans La Région Menabe, Ben Armstrong
Independent Study Project (ISP) Collection
Autour d’Andranomena, un village qui se trouve près de Morondava dans la Région Menabe, il y a encore des terres non cultivées couvertes d’herbes sauvages ou de forets. Mais avec l’accroissement de la population dû au taux de natalité et de l’immigration, il y a de plus en plus de pressions pour trouver de la terre nouvelle.
Cette recherche de terrain se passe avec deux processus parallèles: le premier est la demande de titres domaniaux auprès de l’Etat effectuée par l’intéressé et le second est la validation de la possession de terre avec la connaissance locale de la personne qui …
Water And Energy Balance Response Of A Riparian Wetland To The Removal Of Phragmites Australis, Phillip Mykleby
Water And Energy Balance Response Of A Riparian Wetland To The Removal Of Phragmites Australis, Phillip Mykleby
Department of Earth and Atmospheric Sciences: Dissertations, Theses, and Student Research
Vegetation and climate both play integral roles in water availability, particularly for arid to semi-arid regions. Changes in these variables can lead to extreme shortages in water for regions that rely on water for crop irrigation (i.e., the Great Plains). The objective of this study is to evaluate the impacts of vegetation on water availability in the Republican River basin in central Nebraska. Decreases in streamflow have been observed in the river basin for many years and, as a result, an invasive riparian plant species (Phragmites australis) is being removed in an effort to reduce evapotranspiration and reclaim …
Global Monthly Water Scarcity: Blue Water Footprints Versus Blue Water Availability, Arjen Y. Hoekstra, Mesfin Mekonnen, Ashok K. Chapagain, Ruth E. Mathews, Brian D. Richter
Global Monthly Water Scarcity: Blue Water Footprints Versus Blue Water Availability, Arjen Y. Hoekstra, Mesfin Mekonnen, Ashok K. Chapagain, Ruth E. Mathews, Brian D. Richter
Daugherty Water for Food Global Institute: Faculty Publications
Freshwater scarcity is a growing concern, placing considerable importance on the accuracy of indicators used to characterize and map water scarcity worldwide. We improve upon past efforts by using estimates of blue water footprints (consumptive use of ground- and surface water flows) rather than water withdrawals, accounting for the flows needed to sustain critical ecological functions and by considering monthly rather than annual values. We analyzed 405 river basins for the period 1996–2005. In 201 basins with 2.67 billion inhabitants there was severe water scarcity during at least one month of the year. The ecological and economic consequences of increasing …
The Water Footprint Of Humanity, Arjen Y. Hoekstra, Mesfin Mekonnen
The Water Footprint Of Humanity, Arjen Y. Hoekstra, Mesfin Mekonnen
Daugherty Water for Food Global Institute: Faculty Publications
This study quantifies and maps the water footprint (WF) of humanity at a high spatial resolution. It reports on consumptive use of rainwater (green WF) and ground and surface water (blue WF) and volumes of water polluted (gray WF). Water footprints are estimated per nation from both a production and consumption perspective. International virtual water flows are estimated based on trade in agricultural and industrial commodities. The global annual average WF in the period 1996–2005 was 9,087 Gm3 ∕y (74% green, 11% blue, 15% gray). Agricultural production contributes 92%. About one-fifth of the global WF relates to production for export. …
2011 Deer Creek Ranch Wetland Vegetation Survey, Robert F. Steinauer
2011 Deer Creek Ranch Wetland Vegetation Survey, Robert F. Steinauer
Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts
The approximately 75,000 acre Deer Creek Ranch (owned by Ted Turner) lies on the south side of the Niobrara River in northeastern Sheridan County, Nebraska (Figure 1). The majority of the ranch lies within the Sandhills, with Sandhill dune prairie being the predominant vegetation type. Two significant streams, Deer Creek and the Snake River, originate on the ranch. The primary purpose of the Deer Creek Ranch surveys was to document native wetland plant communities and rare plant species occurrences and to provide vegetation management recommendations for plant communities bordering these two stream. Also surveyed were Chokecherry and Hackberry Lakes in …
Ecosystem Services: The Making Of A Metaphor We Live (?) By, Richard B. Norgaard
Ecosystem Services: The Making Of A Metaphor We Live (?) By, Richard B. Norgaard
Systems Science Friday Noon Seminar Series
What started as a humble metaphor to help us think about our relation to nature has become integral to how we are addressing the future of humanity and the course of biological evolution. The metaphor of nature as a stock that provides a flow of services is insufficient for the difficulties we are in or the task ahead. Indeed, combined with the mistaken presumption that we can analyze a global problem within a partial equilibrium economic framework and reach a new economy project-by-project without major institutional change, the simplicity of the stock-flow framework blinds us to the complexity of the …
The Steady-State Economy As A Solution To The World’S Problems: A Theoretical Examination Of The Greatest Environmental Problem Facing Human Society, Brianna L. Besch
The Steady-State Economy As A Solution To The World’S Problems: A Theoretical Examination Of The Greatest Environmental Problem Facing Human Society, Brianna L. Besch
The Macalester Review
This paper is a theoretical exploration of the questioning, if you were given a magic power to solve one, and only one, of the worlds problem outlined by a classic environmental author, which would you solve, and why? While the field of environmental studies is relatively new, since the publishing of Malthus’ An Essay on the Principles of Population environmental scholars have been debating what should be considered the greatest environmental problem facing humanity. This paper explains how the creation of a steady-state economy to replace our current economic system, as described by Herman Daly, offers a holistic solution to …
Licensing And Allocation Under A New Management Plan For The West Coast Rock Lobster Managed Fishery. A Discussion Paper., Department Of Fisheries Western Australia.
Licensing And Allocation Under A New Management Plan For The West Coast Rock Lobster Managed Fishery. A Discussion Paper., Department Of Fisheries Western Australia.
Fisheries Management Papers
This paper was prepared to set out the proposed direction for licensing, entitlement allocation and related matters under a new management plan for the West Coast Rock Lobster Managed Fishery (the new Management Plan), which is expected to begin operation on 15 January 2013. It is one of two papers being released by the Department of Fisheries (the Department) for comment as part of consultation on the development of this legislation, and is designed to encourage public involvement in the changes to the management arrangements for the West Coast Rock Lobster Managed Fishery (the fishery).
In addition, a related paper …
A Resource-Based Management Approach For Recreational Fishing In Western Australia 2012-2017. State-Wide Management Proposals For Finfish, Crustaceans, Molluscs And Other Invertebrates., Department Of Fisheries Western Australia.
A Resource-Based Management Approach For Recreational Fishing In Western Australia 2012-2017. State-Wide Management Proposals For Finfish, Crustaceans, Molluscs And Other Invertebrates., Department Of Fisheries Western Australia.
Fisheries Management Papers
This paper outlines a new, simplified framework of bag and possession limits that is based on state-wide management arrangements for various categories of finfish and invertebrate resources. This new approach will help simplify advisory material and make the recreational fishing experience more enjoyable.
Operational And Compliance Elements Of A New Management Plan For The West Coast Rock Lobster Managed Fishery. A Discussion Paper., Department Of Fisheries Western Australia
Operational And Compliance Elements Of A New Management Plan For The West Coast Rock Lobster Managed Fishery. A Discussion Paper., Department Of Fisheries Western Australia
Fisheries Management Papers
This paper was prepared to set out the proposed direction for compliance and other operational matters under a new management plan for the West Coast Rock Lobster Managed Fishery (the new Management Plan) which is expected to commence operation on 15 January 2013. It is one of two papers being released by the Department of Fisheries (Department) for comment as part of consultation on the development of this legislation, and is designed to encourage public involvement in the changes to the management arrangements for the West Coast Rock Lobster Managed Fishery (the fishery).
Scotts Bluff National Monument, Plant Community Resource Brief, Isabel Ashton, Mike Prowatzke
Scotts Bluff National Monument, Plant Community Resource Brief, Isabel Ashton, Mike Prowatzke
United States National Park Service: Publications
2011 Monitoring Status
Overview
In 2011, the first year of vegetation monitoring by the Northern Great Plains Network Inventory and Monitoring staff at Scotts Bluff National Monument, efforts resulted in the documentation of 79 plant species. This was the lowest number of species among parks sampled in 2011. Graminoid (grass and grass-like plant) species accounted for only 21 (27%) of the total species, but graminoid cover was much higher than that of any other plant type. Forbs were much more diverse, but did not provide as much foliar cover.
The 5 most abundant native non-graminoids were winterfat (Krascheninnikovia lanata …
Plant Community Composition And Structure Monitoring Protocol For The Northern Great Plains I&M Network - Standard Operating Procedures, Version 1.01, Amy J. Symstad, Robert A. Gitzen, Cody L. Wienk, Michael R. Bynum, Daniel J. Swanson, Andy D. Thorstenson, Kara J. Paintner-Green
Plant Community Composition And Structure Monitoring Protocol For The Northern Great Plains I&M Network - Standard Operating Procedures, Version 1.01, Amy J. Symstad, Robert A. Gitzen, Cody L. Wienk, Michael R. Bynum, Daniel J. Swanson, Andy D. Thorstenson, Kara J. Paintner-Green
United States National Park Service: Publications
Introduction
The Northern Great Plains Inventory and Monitoring Network (NGPN) includes thirteen park units located in five northern Great Plains states across six ecoregions. Plant community composition and structure monitoring comprises the core of the vegetation monitoring effort for the NGPN, covering the “Riparian Lowland Plant Communities” and “Upland Plant Communities” vital signs (Gitzen et al. 2010). The narrative portion of the plant community protocol can be found in Symstad et al. 2012. The narrative includes the rationale for vegetation monitoring, an overview of sample design, field methods, data management, and program requirements. This document contains the standard operating procedures …
A Global Assessment Of The Water Footprint Of Farm Animal Products, Mesfin Mekonnen, Arjen Y. Hoekstra
A Global Assessment Of The Water Footprint Of Farm Animal Products, Mesfin Mekonnen, Arjen Y. Hoekstra
Daugherty Water for Food Global Institute: Faculty Publications
The increase in the consumption of animal products is likely to put further pressure on the world’s freshwater resources. This paper provides a comprehensive account of the water footprint of animal products, considering different production systems and feed composition per animal type and country. Nearly one-third of the total water footprint of agriculture in the world is related to the production of animal products. The water footprint of any animal product is larger than the water footprint of crop products with equivalent nutritional value. The average water footprint per calorie for beef is 20 times larger than for cereals and …
Slides: Natural Gas: Game Changer Or Runner Left On Base? Working To Get It Right In Co!, Gary Graham
Slides: Natural Gas: Game Changer Or Runner Left On Base? Working To Get It Right In Co!, Gary Graham
Drawing the Blueprint for a Sustainable Natural Gas Future (January 18)
Presenter: Dr. Gary Graham, Director, Lands Program, Western Resource Advocates
21 slides
Slides: Drawing The Blueprint For A Sustainable Natural Gas Future, Mark K. Boling
Slides: Drawing The Blueprint For A Sustainable Natural Gas Future, Mark K. Boling
Drawing the Blueprint for a Sustainable Natural Gas Future (January 18)
Presenter: Mark. K. Boling, Executive Vice-President and General Counsel, Southwestern Energy
23 slides
Slides: Current And Proposed Research Activities Addressing Health, Environmental, Economic, And Political Issues Related To Natural Gas Development, University Of Colorado. School Of Public Health. Department Of Environmental And Occupational Health
Slides: Current And Proposed Research Activities Addressing Health, Environmental, Economic, And Political Issues Related To Natural Gas Development, University Of Colorado. School Of Public Health. Department Of Environmental And Occupational Health
Drawing the Blueprint for a Sustainable Natural Gas Future (January 18)
Presenter: Department of Environmental and Occupational Health, University of Colorado School of Public Health
20 slides
Agenda: Drawing The Blueprint For A Sustainable Natural Gas Future, University Of Colorado At Denver. Wirth Chair In Environmental And Community Development Policy, University Of Colorado Boulder. Natural Resources Law Center. Intermountain Oil And Gas Bmp Project
Agenda: Drawing The Blueprint For A Sustainable Natural Gas Future, University Of Colorado At Denver. Wirth Chair In Environmental And Community Development Policy, University Of Colorado Boulder. Natural Resources Law Center. Intermountain Oil And Gas Bmp Project
Drawing the Blueprint for a Sustainable Natural Gas Future (January 18)
A stakeholder-led forum discussing the key topics affecting natural gas as a safe and sustainable energy resource. Participants learned about the current research and related resources at Colorado’s three research universities and participated in designing future research needs.
Slides: Jisea Natural Gas Study: Potential U.S. Electric Power Futures, Jeffrey Logan
Slides: Jisea Natural Gas Study: Potential U.S. Electric Power Futures, Jeffrey Logan
Drawing the Blueprint for a Sustainable Natural Gas Future (January 18)
Presenter: Jeffrey Logan, Denver Museum of Nature and Science
4 slides
Mid-Contract Management Of Conservation Reserve Program Grasslands Provides Benefits For Ring-Necked Pheasant Nest And Brood Survival, Ty W. Matthews, J. Scott Taylor, Larkin A. Powell
Mid-Contract Management Of Conservation Reserve Program Grasslands Provides Benefits For Ring-Necked Pheasant Nest And Brood Survival, Ty W. Matthews, J. Scott Taylor, Larkin A. Powell
School of Natural Resources: Faculty Publications
Conservation Reserve Program (CRP) fields may provide good habitat for nesting and brood-rearing ring-necked pheasants (Phasianus colchicus) during early stages of succession. But, the success of hens in early successional CRP, relative to late successional CRP and other grassland habitats, has yet to be evaluated. The reproductive period is especially critical for populations of pheasants, and CRP’s benefits to hens and chicks may decrease as fields age because of loss of vegetative diversity, decrease in vegetation density, and accumulation of residual litter. During 2005– 2006, we evaluated spatial and temporal variation in nest and brood survival for radio-marked hen pheasants …
Rural Inhabitant Perceptions Of Sandhill Cranes In Wintering Areas Of Northern Mexico, Ingrid Barcelo, Juan Carlos Guzmán-Aranda, Felipe Chávez-Ramírez, Larkin A. Powell
Rural Inhabitant Perceptions Of Sandhill Cranes In Wintering Areas Of Northern Mexico, Ingrid Barcelo, Juan Carlos Guzmán-Aranda, Felipe Chávez-Ramírez, Larkin A. Powell
School of Natural Resources: Faculty Publications
Trends in the mid-continent population of sandhill cranes (Grus canadensis) indicate that the species is increasing. A large proportion of this population winters in northern Mexico where possible conflicts between local inhabitants and cranes can occur. We conducted interviews of 40 rural inhabitants living near wetlands used by cranes in three Mexican states. All interviewees had knowledge of cranes and were capable of describing them. The arrival of cranes affected 43% of interviewees. The negative effects were mainly destroyed crops with a subsequent diminished production. Seventy percent of those affected implemented scare tactics to deter the birds, while others (15%) …
Groundwater Quality And Its Health Impact: An Assessment Of Dental Fluorosis In Rural Inhabitants Of The Main Ethiopian Rift, Tewodros Rango, Julia Kravchenko, Behailu Atlaw, Peter G. Mccornick, Marc Jeuland, Brittany Merola, Avner Vengosh
Groundwater Quality And Its Health Impact: An Assessment Of Dental Fluorosis In Rural Inhabitants Of The Main Ethiopian Rift, Tewodros Rango, Julia Kravchenko, Behailu Atlaw, Peter G. Mccornick, Marc Jeuland, Brittany Merola, Avner Vengosh
Daugherty Water for Food Global Institute: Faculty Publications
This study aims to assess the link between fluoride content in groundwater and its impact on dental health in rural communities of the Ethiopian Rift. A total of 148 water samples were collected from two drainage basins within the Main Ethiopian Rift (MER). In the Ziway-Shala basin in particular, wells had high fluoride levels (mean: 9.4 ± 10.5 mg/L; range: 1.1 to 68 mg/L), with 48 of 50 exceeding the WHO drinking water guideline limit of 1.5 mg/L. Total average daily intake of fluoride from drinking groundwater (calculated per weight unit) was also found to be six times higher than …
Relações Entre As Doenças Respiratórias E A Poluição Atmosférica E Variáveis Climáticas Na Cidade De Curitiba, Paraná, Brasil, Paulo R.B. Guimarães, Ricardo Berger, Fernando Lucambio Perez, Paulo Dt Dl Pires
Relações Entre As Doenças Respiratórias E A Poluição Atmosférica E Variáveis Climáticas Na Cidade De Curitiba, Paraná, Brasil, Paulo R.B. Guimarães, Ricardo Berger, Fernando Lucambio Perez, Paulo Dt Dl Pires
Daugherty Water for Food Global Institute: Faculty Publications
Neste estudo, foram observados níveis de concentrações de poluentes atmosféricos da cidade de Curitiba, no período de novembro de 2003 a junho de 2008, da estação automática de monitoramento da praça Ouvidor Pardinho. O objetivo foi desenvolver uma metodologia de modelagem estatística que explique o número de notificações de doenças respiratórias registradas em idosos (acima de 60 anos) e crianças (abaixo de 5 anos). Além das concentrações de poluentes, algumas variáveis climáticas foram analisadas. Após estudo de diversas metodologias estatísticas, considerou-se mais adequado o ajuste de Modelos Aditivos Generalizados para Locação, Escala e Forma. Os modelos ajustados apresentaram resultados satisfatórios …
As Unidades De Conservação E A Floresta Ombrófila Mista No Estado Do Paraná, Paulo Dt Dl Pires, Douglas Magnus Zeni Jr, Debora Gaulke
As Unidades De Conservação E A Floresta Ombrófila Mista No Estado Do Paraná, Paulo Dt Dl Pires, Douglas Magnus Zeni Jr, Debora Gaulke
Daugherty Water for Food Global Institute: Faculty Publications
O intenso processo de ocupação territorial, uso desordenado dos recursos naturais e destruição de áreas verdes iniciadas no século XIX, são os principais motivos da intensa devastação das Florestas com Araucárias. Como meio de efetivação da proteção e desenvolvimento florestal, o Brasil adotou em sua política ambiental a criação do Sistema de Unidades de Conservação nas categorias, de proteção integral e uso sustentável. Uma alternativa viável é a regulação dos estoques de madeira no Estado por meio de Unidade de Conservação de Uso Sustentável. O que se pretende a partir deste ponto é analisar a possibilidade da criação de regulamentação …