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Articles 12541 - 12570 of 22763
Full-Text Articles in Entire DC Network
The Fierce Green Fire: Vol. 2 Issue 10, Wofford College Environmental Studies Program
The Fierce Green Fire: Vol. 2 Issue 10, Wofford College Environmental Studies Program
The Fierce Green Fire
No abstract provided.
Mapping Shallow Coastal Ecosystems: A Case Study Of A Rhode Island Lagoon, Mark Stolt, Michael Bradley, Jim Turenne, Maggie Payne, Eric Scherer, Giancarlo Cicchetti, Emily Shumchenia, Marisa Guarinello, John W. King, Jon Boothroyd, Bryan Oakley, Carol Thornber, Pete August
Mapping Shallow Coastal Ecosystems: A Case Study Of A Rhode Island Lagoon, Mark Stolt, Michael Bradley, Jim Turenne, Maggie Payne, Eric Scherer, Giancarlo Cicchetti, Emily Shumchenia, Marisa Guarinello, John W. King, Jon Boothroyd, Bryan Oakley, Carol Thornber, Pete August
Natural Resources Science Faculty Publications
In order to effectively study, manage, conserve, and sustain shallow-subtidal ecosystems, a spatial inventory of the basic resources and habitats is essential. Because of the complexities of shallow-subtidal substrates, benthic communities, geology, geomorphology, and water column attributes, few standard protocols are fully articulated and tested that describe the mapping and inventory processes and accompanying interpretations. In this paper, we describe a systematic approach to map Rhode Island’s shallow-subtidal coastal lagoon ecosystems, by using, integrating, and reconciling multiple data sets to identify the geology, soils, biological communities, and environments that, collectively, define each shallow-subtidal habitat. We constructed maps for these lagoons …
Climate Change And The Conservation Of Archaeological Sites: A Review Of Impacts Theory, Caithleen Daly
Climate Change And The Conservation Of Archaeological Sites: A Review Of Impacts Theory, Caithleen Daly
Articles
This article identifies the current state of knowledge in the literature regarding the possible impacts of future climatic change on archaeological sites and ensembles. Drawing on the literature review a matrix of potential impacts is collated to provide a simplified overview. This theoretical ‘menu’ is then tested by applying it to a vulnerability assessment of the World Heritage site of Skellig Michael in Ireland. The case study results reveal some knowledge gaps, particularly in regard to the impacts of climate change on buried archaeological remains.
Habitat Use And Abundance Patterns Of Sandhill Cranes In The Central Platte River Valley, Nebraska, 2003–2010, Todd Joseph Buckley
Habitat Use And Abundance Patterns Of Sandhill Cranes In The Central Platte River Valley, Nebraska, 2003–2010, Todd Joseph Buckley
School of Natural Resources: Dissertations, Theses, and Student Research
The Central Platte River Valley (CPRV) in Nebraska is an important spring stopover area for the midcontinent population of sandhill cranes. Alterations to crop rotation and loss habitat in the CPRV pose a risk to the population. Personnel drove designated routes in the CPRV from 2003–2010 to record the presence of cranes in agricultural fields and estimate abundance. I developed and evaluated models to predict habitat use and flock sizes. Alfalfa was predicted to receive the highest use followed by corn, soybeans, winter wheat, grassland, and shrubland. Use of all habitats and flock size increased as field area increased. Flock …
Education In The Environment: A Strategy For Continued Interagency Outdoor Education Programming: Round 6 Project Compendium, Margaret N. Rees
Education In The Environment: A Strategy For Continued Interagency Outdoor Education Programming: Round 6 Project Compendium, Margaret N. Rees
Reports (PLI Education)
The essence of public land stewardship lies far beyond the words, numbers, and pictures compiled in this project compendium. During the past seven years, many people have gained greater appreciation of the discovered and yetto‐ be discovered treasures held within the Southern Nevada public lands. People have had the opportunity to learn about and make a first‐time connection with nature and the community within which they live. Some participants realized dynamic and everlasting changes in their lives as a result of their new experiences and insights.
Education in the Environment was a four‐year collaborative effort of the Southern Nevada Agency …
Historical Vegetation Of Central Southwest Oregon, Based On Glo Survey Notes : Final Report To Usdi Bureau Of Land Management, Medford District, O. Eugene Hickman, John A. Christy
Historical Vegetation Of Central Southwest Oregon, Based On Glo Survey Notes : Final Report To Usdi Bureau Of Land Management, Medford District, O. Eugene Hickman, John A. Christy
Institute for Natural Resources Publications
Historical vegetation at the time of European settlement is of great interest to both the public and land managers, but is poorly documented. One source of data are the earliest land survey records of the General Land Office (GLO). Rectangular township surveys in Southwest Oregon were initiated in the mid 1850’s as settlers began to claim homesteads in the Bear Creek Valley surrounding what is now Medford. We examined GLO land survey field notes and plats (maps) accompanying the surveys, transcribed GLO landscape data into an Access database, and classified the data set into very general vegetation types for mapping. …
Horticultural Pest Management And The African Economy: Successes, Challenges And Opportunities In A Changing Global Environment, S. Ekesi, A. Chabi-Olaye, S. Subramanian, C. Borgemeister
Horticultural Pest Management And The African Economy: Successes, Challenges And Opportunities In A Changing Global Environment, S. Ekesi, A. Chabi-Olaye, S. Subramanian, C. Borgemeister
All Peer-Reviewed Publications
In many African countries, horticulture is the fastest growing agricultural sub-sector contributing significantly to national incomes. Diverse vegetables, fruits and spices are grown for domestic and export markets. Horticultural exports in Africa has increased by more than 50% in recent years and currently contributes >20% of agricultural exports by volume and income generation. Despite the growth, production has not kept pace with increasing demand due largely to biotic constraints attributed to arthropod pests. Agricultural research aimed at reducing insect pest damage can lead to increased horticultural production and improved rural livelihoods. icipe in collaboration with National Agricultural Research and Extension …
Geospatially Detecting Saccharum Spontaneum: An Invasion Of The Panama Canal Watershed, Casey L. Calamaio
Geospatially Detecting Saccharum Spontaneum: An Invasion Of The Panama Canal Watershed, Casey L. Calamaio
Von Braun Symposium Student Posters
No abstract provided.
Take Pride In America In Southern Nevada: Quarterly Progress Report, Period Covering July 6, 2011-October 5, 2011, Margaret N. Rees
Take Pride In America In Southern Nevada: Quarterly Progress Report, Period Covering July 6, 2011-October 5, 2011, Margaret N. Rees
Anti-littering Programs
- A total of 6 clean-up events were conducted this quarter.
- Interagency cooperation continued.
- Recycling containers were distributed to agencies for use at public events.
- Website redesign continued.
Effects Of Climate Change On Spring Ecosystem Hydroecology As A Guide To Developing Alternative Water Policies, Scott Mensing, Saxon E. Sharpe, Scott Bassett, Don Sada, Jim Thomas
Effects Of Climate Change On Spring Ecosystem Hydroecology As A Guide To Developing Alternative Water Policies, Scott Mensing, Saxon E. Sharpe, Scott Bassett, Don Sada, Jim Thomas
Climate Change Seminar Series (NNE)
Hydroecology: the interface of ecological systems and water which combines the scientific disciplines of hydrology and ecology
Goal: evaluate the hydrologic and climate history using pollen, loss on ignition, total inorganic carbon, and invertebrates from spring sediments in Spring Valley, Eastern Nevada and Snake Valley, Western Utah
Breeding Ecology Of The Pileated Woodpecker, Brandon Lennon Noel
Breeding Ecology Of The Pileated Woodpecker, Brandon Lennon Noel
Student Theses and Dissertations
The purported rediscovery of the ivory-billed woodpecker (Campephilus principalis) in the Cache River National Wildlife Refuge in 2004 was a monumental moment in conservation biology. Although controversy surrounds this and other sightings of ivory-billed woodpeckers within bottomland hardwood forests, the rediscovery of a species thought to have gone extinct revitalized optimism focused on its conservation. What knowledge we possess about ivory-billed woodpeckers comes from research done by James Tanner in the 1930s and his data are pseudo-replicated from just a few pairs. Tanner suggested that sweetgum-oak forest cover types were better quality habitats for ivory-billed woodpeckers and other woodpecker species …
Optimizing Spectral Indices And Chemometric Analysis Of Leaf Chemical Properties Using Radiative Transfer Modeling, Jean-Baptiste Féret, Christophe François, Anatoly A. Gitelson, Gregory P. Asner, Karen M. Barry, Cinzia Panigada, Stéphane Jacquemoud
Optimizing Spectral Indices And Chemometric Analysis Of Leaf Chemical Properties Using Radiative Transfer Modeling, Jean-Baptiste Féret, Christophe François, Anatoly A. Gitelson, Gregory P. Asner, Karen M. Barry, Cinzia Panigada, Stéphane Jacquemoud
School of Natural Resources: Faculty Publications
We used synthetic reflectance spectra generated by a radiative transfer model, PROSPECT-5, to develop statistical relationships between leaf optical and chemical properties, which were applied to experimental data without any readjustment. Four distinct synthetic datasets were tested: two unrealistic, uniform distributions and two normal distributions based on statistical properties drawn from a comprehensive experimental database. Two methods used in remote sensing to retrieve vegetation chemical composition, spectral indices and Partial Least Squares (PLS) regression, were trained both on the synthetic and experimental datasets, and validated against observations. Results are compared to a cross-validation process and model inversion applied to the …
Tracking Large Carnivore Dispersal Using Isotopic Clues In Claws: An Application To Cougars Across The Great Plains, Viviane Hénaux, Larkin A. Powell, Keith A. Hobson, Clayton Kent Nielsen, Michelle A. Larue
Tracking Large Carnivore Dispersal Using Isotopic Clues In Claws: An Application To Cougars Across The Great Plains, Viviane Hénaux, Larkin A. Powell, Keith A. Hobson, Clayton Kent Nielsen, Michelle A. Larue
School of Natural Resources: Faculty Publications
1. Cougar (Puma concolor) populations, like other large carnivores, have increased during recent decades and may be recolonizing their former ranges in Midwestern North America. The dispersal routes taken by these animals from established populations are unknown and insight into these movements would facilitate their conservation and management.
2. We inferred the origin and migration route of four dispersing cougars using stable hydrogen (δD) and carbon (δ13C) isotope values along one of their claws. We compared isotopic variations within claws to regional and large-scale isoscapes of δD and δ13C values in prey species. Using …
El Perro De Monte De Sechura: Su Relación Con El Bosque Seco Tropical Y La Gente De La Región Central De Manabí, Julian O. Buffam
El Perro De Monte De Sechura: Su Relación Con El Bosque Seco Tropical Y La Gente De La Región Central De Manabí, Julian O. Buffam
Independent Study Project (ISP) Collection
The Cerro Hojas-Jaboncillo, located in Central Manabí, Ecuador, is a Patrimonial site that, in addition to containing the ruins of an ancient culture, is home to a species of mammal endemic to the tumbesian eco-region. Currently listed by the ‘LibroRojo de los mamíferos del Ecuador’ as vulnerable, the Sechuran Fox (Lycalopexsechurae) is a nocturnal and solitary animal, of a medium size, that is rarely seen due to its elusive behavior. This species is the focus of this investigation, which seeks to gain an understanding of the plants and animals that the Sechuran Fox requires for food, the home …
A Study Of Sponge Aquaculture In Jambiani: Is Shallow Farming Feasible?, Sarah Friday
A Study Of Sponge Aquaculture In Jambiani: Is Shallow Farming Feasible?, Sarah Friday
Independent Study Project (ISP) Collection
In the village of Jambiani, Unguja, a Swiss NGO called Marine Cultures has established an experimental sponge farming initiative to improve local employment and support economic development. Currently, the main farming site is only accessible through SCUBA diving. This is consistent with experimental farm sites in other oceanic regions, as most are located in depths of at least five meters with sponges suspended vertically to maximize water flow exposure. Farms located in shallower water may not be conducive to sponge growth due to highly variable environmental conditions; however, no conclusive research has been conducted on this matter (Duckworth 2009). Nonetheless, …
Seaweed Farmer Education: Is It Enough To Sustain The Industry? Analyzing The Status Of Stakeholder Investment In Muungoni And Jambiani, Unguja, Erika Davis
Independent Study Project (ISP) Collection
Since Filipino researchers arrived in Zanzibar to determine the potential for cultivation of seaweed more than 20 years ago, the islands' coastal communities have relied on the resource as a main or alternative source of income. When the companies started investing at the industry’s onset, trained personnel offered farmers' education on proper farming techniques for Spinosum (Eucheuma denticulatum) and Cottonii (Kappaphycus spp.) by establishing demonstrative (demo) farms and holding seminars. Today, informal training involves experienced farmers teaching the newcomers their techniques. While demo farms remain in some villages, companies offer no extension services based on the belief that the farmers …
Droughtscape, Fall 2011, Kelly Smith
Droughtscape, Fall 2011, Kelly Smith
DroughtScape: Quarterly Newsletter of the National Drought Mitigation Center (2007–2023)
Drought Preparedness Community Options
Drought Likely to Persist, Intensify Across South
Database Will Help Planners Find Options
Impacts: Ag Losses, Fire, Water Restrictions
NDMC Welcomes International Visitors
New Drought Impact Reporter Online
Sim-Drought, Available Now at Select Agencies
Mapping Agroforestry Design In Project Tipitamba: The Influence Of Spacing On Tree Growth, Joseph Lee
Mapping Agroforestry Design In Project Tipitamba: The Influence Of Spacing On Tree Growth, Joseph Lee
Independent Study Project (ISP) Collection
Agriculturalists in Brasil’s Zona Bragantina are balancing short term social and economic goals with the long term productivity of their agroecosystems. While these goals often times are seen as conflicting, the implementation of agroforestry systems through EMBRAPA’s Projeto Tipitamba has provided an opportunity for farmers in the region to intercrop quick growing, marketable, non-timber forest products with highly valued lumber species all on the same area of land. As Projeto Tipitamba also provides the associated farmers with access to a bush-chopper, it also allows for farmers to stop swidden, slash-and-burn, agriculture and convert to chop-and-mulch land preparation. As a result, …
Review Of Grass: In Search Of Human Habitat. By Joe C. Truett. Foreword By Harry W. Greene., Mary Ann Vinton
Review Of Grass: In Search Of Human Habitat. By Joe C. Truett. Foreword By Harry W. Greene., Mary Ann Vinton
Great Plains Research: A Journal of Natural and Social Sciences (through 2013)
Much of the book is devoted to discussing the heavy human dependence on grasslands and whether this relationship can be maintained in company with grassland conservation. Can humans continue to use grasslands for food, fiber, and newer uses like biofuels and carbon banking while still sustaining the ecosystem? Many of us in academic ecology struggle with resolving perceived conflicts between conservation and human grassland use. In many cases, a "win-win" scenario exists in which, for example, the proper use of livestock grazing is perfectly compatible with a healthy grassland ecosystem. In other cases, such as conserving prairie dog populations, tensions …
Mojave Applied Ecology Notes Fall 2011, E. Cayenne Engel, Scott R. Abella, Kathryn A. Prengaman, Jason Whited, Peter Michel
Mojave Applied Ecology Notes Fall 2011, E. Cayenne Engel, Scott R. Abella, Kathryn A. Prengaman, Jason Whited, Peter Michel
Mojave Applied Ecology Notes
Paper on impacts of Mojave wildfires through time published, possibilities of catastrophic Mt. Charleston forest fires, vegetation mapping at three national parks, UNLV library’s special collections, and the benefits of scientific publications to managers and stakeholders
Water Current, Volume 43, No. 4, Fall 2011
Water Current, Volume 43, No. 4, Fall 2011
Water Current Newsletter
2012 Water Tour To Visit Missouri River in July
Spring Water Lecture Series Will Include Water Modeling Subset
Weber Research Earns Impact Award; Fall and Coming Events; Summer Water Tour
Meet the Faculty: Valery E. Forbes, Ph.D., Daniel Miller, Ph.D.
Weber's Research Gets Water Center Impact Award
Orton Receives 2011 Kremer Award
Guest Commentary: Nebraska Water Management Ahead of the Curve in Ogallala Region
New Institute Director Praises Strong Foundation
The 2011 Missouri River flood II: The past is prologue
Water Advisory Board Meets in October
WRAP Meeting Brief
UNL Extension Works with Afgan Farmers to Improve Techniques and Efficiencies …
Dr7a: Changes In Ecosystem Services And Migration In Low-Lying Coastal Areas Over The Next 50 Years, Robert Costanza, Ida Kubiszewski, Joe Roman, Paul Sutton
Dr7a: Changes In Ecosystem Services And Migration In Low-Lying Coastal Areas Over The Next 50 Years, Robert Costanza, Ida Kubiszewski, Joe Roman, Paul Sutton
Institute for Sustainable Solutions Publications and Presentations
This paper examines the history and current status of ecosystem services in low-lying coastal areas (LLCAs), their potential changes because of wider environmental and social shifts, and the potential impacts of these changes on human migration. We synthesised information from a number of sources on the status and value of ecosystem services in LLCAs, including information about key ecosystems that are likely to be particularly vulnerable to environmental change. We created maps of ecosystem and human population changes in LLCAs and then estimated changes in ecosystem services. Estimating the impacts of these potential changes depends on the future scenario one …
Integrating Ecosystem Services, River Restoration And Community: A Case Study At Fisher's Bend, Michael Carlson
Integrating Ecosystem Services, River Restoration And Community: A Case Study At Fisher's Bend, Michael Carlson
Environmental Science and Management Professional Master's Project Reports
Natural areas and ecosystem services at the edge of urban areas are threatened by increasing development. This paper examines how community based restoration partnerships can work to identify, protect and restore ecosystem services provided by salmon and our local rivers. Floodplains provide a wide range of ecosystem services to urban and rural communities and we should work collaboratively to protect and restore them. Floodplains are especially valuable and important for salmon recovery. By using a case study, we explore the process and feasibility of restoring off-channel salmon habitat at Fisher's Bend in the lower Clackamas river. A feasibility study was …
The Influence Of Land Use And Climate Change On Forest Biomass And Composition In Massachusetts, Usa, Jonathan R. Thompson, David R. Foster, Robert M. Scheller, David Kittridge
The Influence Of Land Use And Climate Change On Forest Biomass And Composition In Massachusetts, Usa, Jonathan R. Thompson, David R. Foster, Robert M. Scheller, David Kittridge
Environmental Science and Management Faculty Publications and Presentations
Land use and climate change have complex and interacting effects on naturally dynamic forest landscapes. To anticipate and adapt to these changes, it is necessary to understand their individual and aggregate impacts on forest growth and composition. We conducted a simulation experiment to evaluate regional forest change in Massachusetts, USA over the next 50 years (2010–2060). Our objective was to estimate, assuming a linear continuation of recent trends, the relative and interactive influence of continued growth and succession, climate change, forest conversion to developed uses, and timber harvest on live aboveground biomass (AGB) and tree species composition. We examined 20 …
Exploring Marine Conservation Efforts In Tasmania: An Internship With Ocean Planet, Lauren Markram
Exploring Marine Conservation Efforts In Tasmania: An Internship With Ocean Planet, Lauren Markram
Independent Study Project (ISP) Collection
I chose to conduct a dual internship with Environment Tasmania and Ocean Planet. Although I was located in the ET office and conducted participant observation within that environment, I specifically worked on the Ocean Planet campaign to promote marine conservation efforts throughout Tasmania. I was drawn to this internship because the oceans are often disregarded within the environmental movement despite the fact that they are the key to life on earth and are in a degraded state. Further, Tasmania’s marine environment is utterly unique, with ninety percent of its marine life found nowhere else on earth. Despite the magnificent biodiversity …
Effects Of Coral Stressing On The Feeding Preferences Of The Coral Predator, Acanthaster Planci, Harriet Booth
Effects Of Coral Stressing On The Feeding Preferences Of The Coral Predator, Acanthaster Planci, Harriet Booth
Independent Study Project (ISP) Collection
Coral predators have always been a natural occurrence on coral reefs, but recent studies have begun to focus on the feeding preferences of these predators in relation to bleached and damaged corals. The recent mass bleaching events, mainly resulting from factors of climate change, have motivated researchers to study the effects of predation on the affected corals to determine the extent of harm these large-scale disturbances may be causing to reefs. This study examined how coral stressing affects the feeding preferences of Acanthaster planci, a coral-feeding starfish that has been known to cause widespread damage to coral reefs, especially during …
Feeling, Experiencing, Learning: Environmental Education At Escola Vila, Isabelle Aida Heilman
Feeling, Experiencing, Learning: Environmental Education At Escola Vila, Isabelle Aida Heilman
Independent Study Project (ISP) Collection
Teaching children about the importance of the protecting environment is a key step in preparing future generations to solve environmental issues. The purpose of this paper is to describe and analyze how Escola Vila in Fortaleza, Brazil integrates environmental education into its curriculum to promote positive environmental actions later in the children’s lives. Classroom observations revealed how environmental education is incorporated into the curriculum in an interdisciplinary way. Students at Escola Vila learn about the environment through creative projects, experiential learning, sustainable practices on the campus and human rights education. Interviews with alumni showed that these four ways that Escola …
An Assessment Of Icthyofauna And Artisanal Fishing From The Port Of Pedregal In The Golfo De Chiriquí., Kathleen A. Carey
An Assessment Of Icthyofauna And Artisanal Fishing From The Port Of Pedregal In The Golfo De Chiriquí., Kathleen A. Carey
Independent Study Project (ISP) Collection
The artisanal fishery based out of Pedregal, on the Pacific Coast of Panama in the Chiriqui Province was studied to analyze the biodiversity and community structure of the icthyofaunal population and investigate the practices and opinions of the fishermen there. The study area is located in the Gulf of Chiriqui, and is heavily influenced by freshwater runoff from anthropogenically influenced rivers during. This is especially relevant during the rainy season. During two weeks in November, at the end of the rainy season, fishermen from one port in Pedregal were accompanied for the purposes of data collection and interviewing. The data …
What Is The Value Of A Sea Turtle?: A Case Study Of The Conservation Ethics Of Sea Turtle Fishermen In The Caribbean Coast Of Nicaragua, Alicia Conte
Independent Study Project (ISP) Collection
The sea turtle populations on the Caribbean Coast of Nicaragua have dramatically decreased as a result of human use and consumption. All species of sea turtles are endangered and at risk of extinction. This is an environmental issue because if sea turtles go extinct, many other plants and animals in marine ecosystems will be negatively impacted by this loss, and the environment will be drastically altered. This is also problematic for locals who depend on this resource for food and as a source of income. Conservation efforts have been initiated by an international NGO, the Wildlife Conservation Society (WCS); however, …
Preferencias Sexuales De Aves A Las Carreteras Los Efectos De La Carretera Cuenca - Molleturo – Naranjal En Las Proporciones De Los Sexos En Los Individuos De La Especies De Phrygilus Unicolor En El Parque Nacional De Cajas, Sarah Takushi
Independent Study Project (ISP) Collection
Through the recent years, the Cuenca-Molleturo-Naranjal highway that cuts through the Cajas national park has been the object of much environmental research. In particular, the effects of the highway on the territorial distribution of the local avifauna—that includes many endemic and endangered species—has been a very important subject of study for the conservationists and the park managers. The following study is supplementary to the work of the University of Azuay and the University of Stoneybrook in New York. Here, we analyze how the highway may influence the sex ratios of one of the most commonly found specie—Phrygilus unicolor. Using observations …