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Articles 4891 - 4920 of 9826

Full-Text Articles in Natural Resources and Conservation

Assessing Satellite-Based Start-Of-Season Trends In The U.S High Plains, Rezaul Mahmood Jan 2014

Assessing Satellite-Based Start-Of-Season Trends In The U.S High Plains, Rezaul Mahmood

School of Natural Resources: Faculty Publications

No abstract provided.


Direct Stratospheric Injection Of Biomass Burning Emissions: A Case Study Of The 2009 Australian Bushfires Using The Nasa Giss Modele2 Composition-Climate Model, Robert Field, Mike From, Apostolos Voulgarakis, Drew Shindell, Mike Flannigan, Peter Bernath Jan 2014

Direct Stratospheric Injection Of Biomass Burning Emissions: A Case Study Of The 2009 Australian Bushfires Using The Nasa Giss Modele2 Composition-Climate Model, Robert Field, Mike From, Apostolos Voulgarakis, Drew Shindell, Mike Flannigan, Peter Bernath

Chemistry & Biochemistry Faculty Publications

Direct stratospheric injection (DSI) of forest fire smoke represents a direct biogeochemical link between the land surface and stratosphere. DSI events occur regularly in the northern and southern extratropics, and have been observed across a wide range of measurements, but their fate and effects are not well understood.

DSIs result from explosive, short-lived fires, and their plumes stand out from the background concentrations immediately. This makes it easier to associate detected DSIs to individual fires and their estimated emissions. Because the emissions pulses are brief, chemical decay can be more clearly assessed, and because the emissions pulses are so large, …


The Effects Of Mountaintop Removal Mining And Valley Fills On Stream Salamander Communities, Brenee' Lynn Muncy Jan 2014

The Effects Of Mountaintop Removal Mining And Valley Fills On Stream Salamander Communities, Brenee' Lynn Muncy

Theses and Dissertations--Forestry and Natural Resources

Mountaintop removal mining and valley filling (MTR/VF) is a common form of land conversion in Central Appalachia and threatens the integrity of stream ecosystems. We investigated the effects of MTR/VF on stream salamander occupancy probabilities and community structure by conducting area constrained active searches for stream salamanders within intermittent streams located in mature forest (i.e., control) and those impacted by MTR/VF. During March to June of 2013, we detected five stream salamander species (Desmognathus fuscus, D. monticol, Eurycea cirrigera, Pseudotriton ruber, and Gyrinophilus porphyriticus) and found that the probability of occupancy was greatly reduced in MTR/VF streams compared …


Ground Arthropod Abundance In Switchgrass And Diverse Prairie Agroenergy Crops, Stephanie Paape, Libby Torresani, Mark C. Myers Jan 2014

Ground Arthropod Abundance In Switchgrass And Diverse Prairie Agroenergy Crops, Stephanie Paape, Libby Torresani, Mark C. Myers

Undergraduate Student Work

The University of Northern Iowa’s Tallgrass Prairie Center converted corn and soybean fields in the Cedar River Natural Resource Area to four mixes of perennial tallgrass prairie species. Research plots were randomly seeded with one of four treatments of native prairie vegetation including a switchgrass monoculture and a 32-species prairie mix. We studied ground arthropod abundance in Switchgrass and the 32-species prairie mix at various distances from the nearest woody edge using pitfall traps. We hypothesized that a 32-species Prairie mix would support greater numbers of ground arthropods than a Switchgrass monoculture and that ground arthropod abundance would be greater …


Grassland Bird Nest Survival In Perennial Agroenergy Crops, Libby Torresani, Stephanie Paape, Mark C. Myers Jan 2014

Grassland Bird Nest Survival In Perennial Agroenergy Crops, Libby Torresani, Stephanie Paape, Mark C. Myers

Undergraduate Student Work

Previous research had been done in 2011 and 2012 regarding bird nest survival rates in the Cedar River Natural Resource Area in Washburn, IA. Further analysis of bird nest survival rates was done in this study to research how nest age, calendar date, soil type, and vegetation type influence the success or failure of these nests. New nests were identified in the prairie plots of the Cedar River Natural Resource Area and added to the previous sample size from the original study. A sample size of 97 bird nests total and 67 Dickcissel nests –SPAM (Spiza Americana) were …


Comeback Of Community-Based Forest Management: The Need To Revamp Strategies To Promote Decentralized Environmental Governance In India And Brazil, Naysa Ahuja Jan 2014

Comeback Of Community-Based Forest Management: The Need To Revamp Strategies To Promote Decentralized Environmental Governance In India And Brazil, Naysa Ahuja

Florida A & M University Law Review

The governance of forests and their resources has always been a contentious issue. It has created a divide between developing and developed countries, as well as within them. With the increasing recognition of forests as valuable commodities in the global market, the management of forests in developing countries is becoming a matter of constant concern for ecologists, economists, and politicians.

Part I of this article provides an overview of the Participatory Forest Management (PFM) approach in the international context. Part II and III examine environmental governance in the forest sector of two rapidly emerging economies of the world, India and …


An Analysis Of Swift Fox (Vulpes Velox) Occupancy On The Northern Cheyenne Reservation, Montana, Adriann Michelle Killsnight Jan 2014

An Analysis Of Swift Fox (Vulpes Velox) Occupancy On The Northern Cheyenne Reservation, Montana, Adriann Michelle Killsnight

All Master's Theses

The swift fox (Vulpes velox) is a small can.id native to the short-grass prairies of the Great Plains region of the United States and Canada. Swift foxes once occupied areas of Montana, North Dakota, South Dakota, Wyoming, Colorado, Nebraska, Kansas, New Mexico, Oklahoma, Texas and the southern regions of Alberta, Manitoba, and Saskatchewan, including the Northern Cheyenne Reservation (NCR) in southeastern, Montana. Since the arrival of European settlers to the prairie region in the late 1800s through the early 1900s, swift fox distribution or been reduced and populations have substantially declined or completely eliminated in some areas due …


State Of The River Report For The Lower St. Johns River Basin, Florida: Water Quality, Fisheries, Aquatic Life, And Contaminants 2014, Environmental Protection Board, City Of Jacksonville, University Of North Florida, Jacksonville University, Lucy Sonnenberg, Gerry Pinto, Nisse Goldberg, Kimberly Mann, Radha Pyati, Gretchen Bielmyer-Fraser, Stuart Chalk, Peter Bacopoulos, Brian P. Zoellner Jan 2014

State Of The River Report For The Lower St. Johns River Basin, Florida: Water Quality, Fisheries, Aquatic Life, And Contaminants 2014, Environmental Protection Board, City Of Jacksonville, University Of North Florida, Jacksonville University, Lucy Sonnenberg, Gerry Pinto, Nisse Goldberg, Kimberly Mann, Radha Pyati, Gretchen Bielmyer-Fraser, Stuart Chalk, Peter Bacopoulos, Brian P. Zoellner

State of the River Report

No abstract provided.


Genetic Variation, Local Adaptation And Population Structure In North American Red Oak Species, Quercus Rubra L. And Q. Ellipsoidalis E. J. Hill, Jennifer F. Lind-Riehl Jan 2014

Genetic Variation, Local Adaptation And Population Structure In North American Red Oak Species, Quercus Rubra L. And Q. Ellipsoidalis E. J. Hill, Jennifer F. Lind-Riehl

Dissertations, Master's Theses and Master's Reports - Open

Forest trees, like oaks, rely on high levels of genetic variation to adapt to varying environmental conditions. Thus, genetic variation and its distribution are important for the long-term survival and adaptability of oak populations. Climate change is projected to lead to increased drought and fire events as well as a northward migration of tree species, including oaks. Additionally, decline in oak regeneration has become increasingly concerning since it may lead to decreased gene flow and increased inbreeding levels. This will in turn lead to lowered levels of genetic diversity, negatively affecting the growth and survival of populations. At the same …


New Mexico Water Law Capsules, Stephanie Tsosie Jan 2014

New Mexico Water Law Capsules, Stephanie Tsosie

Water Matters!

This article contains a list some of the key cases decided in the state and federal courts of New Mexico with very brief descriptions of the rulings. The finalized cases have been arranged by topic. This chapter is intended to be a quick and handy reference guide and not a thorough summary of the facts and law of each case. This year we have also included a list of water law statutes.


Water Conservation, Consuelo Bokum Jan 2014

Water Conservation, Consuelo Bokum

Water Matters!

New Mexico always has had periods of water shortages, some far more long lasting and devastating than others. As warming temperature and changing weather patterns continue to develop, the likelihood that water shortages—like those felt throughout the state from 2010 through 2013—will occur with greater frequency. These changes can and have caused significant economic and environmental damage, and the risk of more harm will not improve unless we improve our water management significant.


Drought, Adrian Oglesby Jan 2014

Drought, Adrian Oglesby

Water Matters!

New Mexico is renowned for its high deserts, mild climate, and abundant sunshine. Incidentally, these physical attributes, which make New Mexico so unique and beautiful, are also characteristic of a naturally dry environment. The state has been subjected to severe drought conditions in the past, alternating with times of uncharacteristically high supplies of moisture upon which its population has at times over-relied.

This article will provide various definitions of drought and a short history of drought in New Mexico; discuss impacts of drought on the state’s human water user communities and environment; discuss in brief the priority call and water …


Priority Administration, Ed Merta Jan 2014

Priority Administration, Ed Merta

Water Matters!

Since the turn of the twenty first century, drought conditions have frequently stricken much of New Mexico. Such intervals of extreme dryness have been a permanent, recurring feature of the state’s climate for at least two thousand years, according to tree ring data and other scientific evidence. Some of these past droughts lasted for decades, exceeding in severity the Dust Bowl of the 1930sand the great New Mexico drought of the 1950s. Today, climate change models indicate that the Southwest will likely become even hotter, potentially making future droughts in New Mexico more extreme. Managing water shortages promises to become …


Active Water Resource Management, Paul Bossert, Gregory C. Ridgley Jan 2014

Active Water Resource Management, Paul Bossert, Gregory C. Ridgley

Water Matters!

For decades, most of the waters of the State of New Mexico have been the subject of water rights adjudications to establish all the water rights. Stream systems and sub-basins geographically define the adjudications. There are twelve active cases. However, complete adjudication of all New Mexico water rights is still many years away. Meanwhile, water use in the state has evolved.New water users increasingly look to acquire existing water rights rather than developing new rights. Decisions on administration, distribution, and redistribution of water have to be made.

It was widely held, though not unanimously, that the State Engineer needed greater …


Domestic Wells, Paul Bossert, Sarah Armstrong Jan 2014

Domestic Wells, Paul Bossert, Sarah Armstrong

Water Matters!

The domestic well statutes direct that the State Engineer “shall” issue a permit for certain types of temporary or low volume wells, including wells for household use. For the past fifty-five years, the Office of the State Engineer (OSE) has interpreted this to mean that such permits are granted with no evaluation, public notice, or hearing.


Water For New Mexico Rivers, Beth Bardwell, Adrian Oglesby Jan 2014

Water For New Mexico Rivers, Beth Bardwell, Adrian Oglesby

Water Matters!

The Rio Grande, the Pecos, the Gila, the San Juan, the Canadian—New Mexico’s rivers are synonymous with the state’s culture and natural heritage. New Mexicans overwhelmingly care about the health of the state’s rivers and that includes flows to support fish and river dependent wildlife. Rivers, wetlands, and riparian areas comprise a very small part of our landscape—a mere 1 percent. This 1 percent plays an essential role in renewing the state’s water supply for its two million residents; for sustaining the state’s second largest industry—tourism; for producing food and fiber; and for sustaining New Mexico’s web of life. Eighty …


Inter-Basin Water Transfers, Anne Minard Jan 2014

Inter-Basin Water Transfers, Anne Minard

Water Matters!

Inter-basin water transfers move water from one watershed to another. As droughts constrict the availability of water, and cities grow larger and thirstier, such transfers are increasingly being eyed as a solution. Although inter-basin transfers usually do not increase the overall availability of water in a state, they can move water to where it is needed most. Some of the main proponents of inter-basin transfers are pro-growth city and state governments as the re-allocation of water across watersheds allows for flexibility in planning for future growth.


Navajo-Gallup Water Supply Project, Jerold Widdison, Pat Page Jan 2014

Navajo-Gallup Water Supply Project, Jerold Widdison, Pat Page

Water Matters!

In March of 2009, the Congress passed and President Obama signed into law the“Omnibus Public Land Management Act of 2009". The Project is a major endeavor for northwestern New Mexico. In one sense,authorization of the project culminates years of work. In another sense, it means the beginning of many additional years of effort. There is much to be done to construct and carry the project forward to reality, including work for the federal government,the State of New Mexico, the Navajo Nation, and the city of Gallup. In view of the Project’s magnitude, this article reviews only its major aspects


The Nambé, Pojoaque, San Ildefonso, And Tesuque Pueblos Settlement, Paul Bossert, Sarah Armstrong Jan 2014

The Nambé, Pojoaque, San Ildefonso, And Tesuque Pueblos Settlement, Paul Bossert, Sarah Armstrong

Water Matters!

The “Aamodt case” is a complex, long-running adjudication of water rights in the Pojoaque River watershed northwest of Santa Fe. In 1966,it was filed in federal court as State of New Mexico, ex rel. State Engineer,et al. v. Aamodt, et al. The parties include the State, through the State Engineer, about 5,600 non-Indian claimants, the Pueblos of Nambé, Pojoaque,San Ildefonso, and Tesuque, and governmental entities such as the county of Santa Fe, many acequias, the Pojoaque Valley Irrigation District, and several federal and state agencies.


Taos Pueblo Water Rights Settlement, Paul Bossert, Darcy S. Bushnell Jan 2014

Taos Pueblo Water Rights Settlement, Paul Bossert, Darcy S. Bushnell

Water Matters!

In November of 2010, the Congress passed the Claims Resolution Act and on December 8, President Obama signed it into law. Title V of the Claims Act, the Taos Pueblo Indian Water Rights Settlement Act, settles the Pueblo portion of the Abeyta case and approves an agreement signed in 2006 by officials from Taos Pueblo, the State of New Mexico, and other interested water rights owners in the Taos area. The settlement act also helps resolve the non-Indian portion of Abeyta. The measure quantifies Taos Pueblo’s water rights and protects the interests of local acequias, the Town of Taos, and …


Salt Basin, Jerold Widdison, Stephanie Tsosie Jan 2014

Salt Basin, Jerold Widdison, Stephanie Tsosie

Water Matters!

The Salt Basin of south-central New Mexico presents several problems of resource utilization. The basin is a large but little-known area—dry, inhospitable—but it has a sought-after supply of groundwater and perhaps a supply of natural gas and oil. In addition, the basin features vast stretches of grassland in an essentially intact natural environment. The“hows” and the “whethers” of using and conserving these resources have been vigorously argued for several years.


Water Trust Board, Joanne Hilton, Darcy S. Bushnell Jan 2014

Water Trust Board, Joanne Hilton, Darcy S. Bushnell

Water Matters!

In 2001, the New Mexico legislature passed the Water Project Finance Act. The stated purpose of the Water Project Finance Act is to provide a financing mechanism to promote water use efficiency, water resource conservation and protection, and fair distribution and allocation of water to all users. The Water Trust Board was created in the Act. Its purpose is to: 1) oversee and administer the Water Trust Fund and Water Project Fund; 2) review and recommend funding for qualifying water projects to the legislature; and 3)pursue additional funding opportunities.


Strategic Water Reserve, Brigette Buynak, Stephanie Tsosie Jan 2014

Strategic Water Reserve, Brigette Buynak, Stephanie Tsosie

Water Matters!

The Strategic Water Reserve (Reserve) established in 2005 transforms New Mexico’s policies regarding river management. The Reserve is a pool of publicly held water rights dedicated to keeping New Mexico’s rivers flowing to meet the needs of river-dependent endangered species and to fulfill our water delivery obligations to other states. It is a tool for New Mexico to achieve sensible and sustainable water policies by balancing water use between cities, industry, agriculture, and the rivers of the state.


Conservation Without Nature: The Trouble With In Situ Versus Ex Situ Conservation, Irus Braverman Jan 2014

Conservation Without Nature: The Trouble With In Situ Versus Ex Situ Conservation, Irus Braverman

Journal Articles

Although understudied in academia and mostly unheard of by the general public, the in situ/ex situ dichotomy has shaped — and still very much shapes — the development of the nature conservation movement and its institutional alliances in the last few decades. Latin for “in” and “out” of place, the in/ex situ dichotomy often stands for the seemingly less scientific dichotomy between wild nature and captivity. Drawing on ethnographic engagements with zoo professionals and wildlife managers, this article explores the evolution of the in situ/ex situ dyad in nature conservation, which traverses the worlds of dead and live matter, artificilia …


Cosee Ocean Inquiry Group Report: Opportunities For Creating Lifelong Ocean Science Literacy, Paul Boyle, Vince Breslin, Lisa Craig Brisson, John Fraser, Alan J. Friedman, Katie Gardner, Sarah Schoedinger, Jerry Schubel, Steve Uzzo, Steven Yalowitz Jan 2014

Cosee Ocean Inquiry Group Report: Opportunities For Creating Lifelong Ocean Science Literacy, Paul Boyle, Vince Breslin, Lisa Craig Brisson, John Fraser, Alan J. Friedman, Katie Gardner, Sarah Schoedinger, Jerry Schubel, Steve Uzzo, Steven Yalowitz

School for the Environment General Publications

This Inquiry Group Report for the Centers for Ocean Sciences Education Excellence Ocean Communities in Education And Social Networks (COSEE OCEAN) provides a fresh look at how broader ocean science literacy can be developed, especially through less-recognized channels such as opportunistic learning, the private and “third” sectors, and the enormously varied activities under the heading of informal science education. The 10 authors of this report (see Contributors section) have been working together for two years to find and review a range of issues and resources for current and potential ocean science literacy providers, both professional and volunteer.

Several chapters provide …


A Dynamic, Distributed Hydrologic Model For The Blue Earth River Watershed, Minnesota With Implications Regarding Land Use And Water Quality, Michael L. Merlini Jan 2014

A Dynamic, Distributed Hydrologic Model For The Blue Earth River Watershed, Minnesota With Implications Regarding Land Use And Water Quality, Michael L. Merlini

All Graduate Theses, Dissertations, and Other Capstone Projects

The Blue Earth River (BER) watershed covers approximately one million acres of south-central Minnesota and northern Iowa. Modern farming practices have led to the loss of over 90 percent of the watershed's original wetlands. Corresponding changes in runoff and stream flow have led to dramatically reduced water quality in the BER's main stem following most precipitation events. The purpose of this research is to examine the relationships among precipitation, infiltration, base flow, and runoff in the Blue Earth River watershed basin.

This study developed a calibrated numerical hydrologic model for BER watershed using the distributed flow model, Vflo™. The model …


Integrating Societal Perspectives And Values For Improved Stewardship Of A Coastal Ecosystem Engineer, Steven B. Scyphers, J. Steven Picou, Robert D. Brumbaugh, Sean P. Powers Jan 2014

Integrating Societal Perspectives And Values For Improved Stewardship Of A Coastal Ecosystem Engineer, Steven B. Scyphers, J. Steven Picou, Robert D. Brumbaugh, Sean P. Powers

University Faculty and Staff Publications

Oyster reefs provide coastal societies with a vast array of ecosystem services, but are also destructively harvested as an economically and culturally important fishery resource, exemplifying a complex social-ecological system (SES). Historically, societal demand for oysters has led to destructive and unsustainable levels of harvest, which coupled with multiple other stressors has placed oyster reefs among the most globally imperiled coastal habitats. However, more recent studies have demonstrated that large-scale restoration is possible and that healthy oyster populations can be sustained with effective governance and stewardship. However, both of these require significant societal support or financial investment. In our study, …


Detection Of Seagrass Scars Using Sparse Coding And Morphological Filter, Ender Oguslu, Sertan Erkanli, Victoria J. Hill, W. Paul Bissett, Richard C. Zimmerman, Jiang Li, Charles R. Bostater Jr. (Ed.), Stelios P. Mertikas (Ed.), Xavier Neyt (Ed.) Jan 2014

Detection Of Seagrass Scars Using Sparse Coding And Morphological Filter, Ender Oguslu, Sertan Erkanli, Victoria J. Hill, W. Paul Bissett, Richard C. Zimmerman, Jiang Li, Charles R. Bostater Jr. (Ed.), Stelios P. Mertikas (Ed.), Xavier Neyt (Ed.)

OES Faculty Publications

We present a two-step algorithm for the detection of seafloor propeller seagrass scars in shallow water using panchromatic images. The first step is to classify image pixels into scar and non-scar categories based on a sparse coding algorithm. The first step produces an initial scar map in which false positive scar pixels may be present. In the second step, local orientation of each detected scar pixel is computed using the morphological directional profile, which is defined as outputs of a directional filter with a varying orientation parameter. The profile is then utilized to eliminate false positives and generate the final …


Australian Smes: Waste Sent To Landfill, Janice Redmond, Elizabeth A. Walker, Craig M. Parker, Mike Simpson Jan 2014

Australian Smes: Waste Sent To Landfill, Janice Redmond, Elizabeth A. Walker, Craig M. Parker, Mike Simpson

Research outputs 2014 to 2021

Landfill waste has a negative impact on the environment and Small and Medium Enterprises (SMEs) are believed to be significant contributors. There is little government or scholarly research, however, quantifying the collective volume of waste SMEs send to landfill. The limited studies instead measure total volumes (landfill and recycling combined) and/or do not distinguish between specific waste streams (e.g. wood) and subcategories (e.g. dust). This paper contributes to knowledge by reconceptualising SME waste into subcategories and by measuring landfill volumes. It presents findings from 404 Australian SMEs which found that, in descending order, cardboard, paper, plastic wrap, wood dust and …


Investigating The Effects Of Land Use On Small Mammal Populations, Emily Vincent Dec 2013

Investigating The Effects Of Land Use On Small Mammal Populations, Emily Vincent

Student Research

Introduction
The DePauw Nature Park is an excellent site to study the effects of land use on ecosystems. The recent construction of a small farm and the recent restoration of farmland into a prairie provide sites to study how changes in land use affect ecosystems. We studied the effects of land use changes on small mammal communities at the campus farm, an old field next to the campus farm, and a restored prairie.

Hypotheses
We hypothesized that the abundance and diversity of small mammals would be highest in the restored prairie and lowest in the campus farm.

Methods
We used …