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

Discipline
Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 5251 - 5280 of 9826

Full-Text Articles in Natural Resources and Conservation

La Vista Desde Arriba: El Uso De Cartografía Participativa Para Empoderar A Las Comunidades Y Promover La Conservación Del Medio Ambiente Los Mapas Como Herramienta En El Proyecto De Cacao Silvestre En Baures, Beni, Lily Alexander Oct 2012

La Vista Desde Arriba: El Uso De Cartografía Participativa Para Empoderar A Las Comunidades Y Promover La Conservación Del Medio Ambiente Los Mapas Como Herramienta En El Proyecto De Cacao Silvestre En Baures, Beni, Lily Alexander

Independent Study Project (ISP) Collection

El tema de este proyecto es la aplicación de la cartografía participativa con cinco diferentes comunidades de recolectores del cacao en la región de Baures, Bolivia. La investigación explora los elementos de esta metodología, cómo se implementa este proceso y el papel que los mapas pueden tener en el empoderamiento de la gente local de gestionar sus propios recursos naturales en una manera más sostenible. A través de mapas parlantes dibujados por las comunidades, reuniones con la gente local, coordenadas de GPS y digitalizaciones de la geografía de la región, he producido una variedad de mapas que representan el conocimiento …


Traditional Wild Protein Collection Techniques Of The Naso People: On The Verge Of Change, Caldwell Rohrbach Oct 2012

Traditional Wild Protein Collection Techniques Of The Naso People: On The Verge Of Change, Caldwell Rohrbach

Independent Study Project (ISP) Collection

I studied the traditional wild protein collection techniques of the Naso people in the Syellick community Naso Territory, Bocas del Toro for 15 days during the end of November. The goal of this research was to record the various hunting techniques used by the Naso and determine whether those practices will disappear after the passing of this generation. I used informal and unstructured interviews as well as participant, objective, and passive observation (Master of Business Administration).

The Naso people complete at least one form of wild protein collection every day. The given technique is directly related to the weather on …


Assessment Of Genetic Connectivity And Potential Management Plans For The Coral Reef Ecosystems Of Guna Yala, Panama, Molly Mcentee Oct 2012

Assessment Of Genetic Connectivity And Potential Management Plans For The Coral Reef Ecosystems Of Guna Yala, Panama, Molly Mcentee

Independent Study Project (ISP) Collection

Genetic connectivity between three populations of the common reef sea urchin, Echinometra lucunter located in fringing reefs off the islands of Ukuptupu, Wichupwala and Porvenir in western Guna Yala was analyzed to give insight into population distribution and the most effective conservation management plans for the area. The reefs of Guna Yala are facing many threats on a global or regional scale including global warming, ocean acidification, sea level rise, disease and severe storms. On a local level, increasing stress is being placed on these reef ecosystems from human activity including coral mining, overfishing, and pollution. In order to prevent …


Too Much Weed: Invasive Species In Chitwan National Park, Laura Nelson Oct 2012

Too Much Weed: Invasive Species In Chitwan National Park, Laura Nelson

Independent Study Project (ISP) Collection

Invasive plant species threaten jungle eco-systems in Chitwan National Park. Mikania micrantha is the most destructive invasive plant in the park and has been named one of the world’s 100 worst invaders. It is an exceptionally fastgrowing and aggressive perennial plant that is quickly spreading throughout Chitwan and ousting native plant species that comprise the diets of rhinos and other important wildlife species. M. micrantha poses both immediate ecological concerns to wildlife and threatens rural subsistence farming populations by destroying cropland. In Nepal, no policy or program exists to contain invasive plant species, and large-scale management of M. micrantha is …


A Geospatial Modeling Framework For Assessing Biofuels-Related Land-Use And Land-Cover Change, Ruopu Li, Qingfeng (Gene) Guan, James W. Merchant Oct 2012

A Geospatial Modeling Framework For Assessing Biofuels-Related Land-Use And Land-Cover Change, Ruopu Li, Qingfeng (Gene) Guan, James W. Merchant

School of Natural Resources: Faculty Publications

With the increasing biofuel demands in recent years, the cultivated lands for biofuel crops, i.e., corn and soybeans, the major sources of ethanol and biodiesel, have been greatly expanding in the northern Great Plains states of the United States. Simulating the spatio-temporal dynamics of biofuel croplands can provide critical information required for assessing the impacts of land-use change on wildlife conservation and water quality. But, yearly agricultural practices such as crop rotations often complicate the spatially explicit modeling of specific crops’ expansion. Our research focused on developing a geospatial modeling framework that is able to distinguish long-term, regional changes in …


Drinking Water Resource Directory, New England Environmental Finance Center Oct 2012

Drinking Water Resource Directory, New England Environmental Finance Center

Sustainable Communities Capacity Building

This document is intended to help local and regional planning agencies, and their constituent water utilities, integrate drinking water infrastructure planning and investments into plans for sustainable development. Resources listed here provide guidance on making land use decisions that protect water resources, setting adequate and sustainable drinking water rates, controlling water loss, funding water infrastructure projects, and managing water utilities.

The directory was developed by the Environmental Finance Center Network through the Capacity Building for Sustainable Communities program funded by the U.S. Department of Housing and Urban Development and the Environmental Protection Agency. Through this program, EFCN is providing capacity …


Green Crude, Wyatt Smith Oct 2012

Green Crude, Wyatt Smith

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

Green Crude


Reconsidering National Park Interpretation Of The Great Plains And Trans-Mississippi West, Robert Pahre Oct 2012

Reconsidering National Park Interpretation Of The Great Plains And Trans-Mississippi West, Robert Pahre

Great Plains Research: A Journal of Natural and Social Sciences (through 2013)

The National Park Service has generally interpreted its sites in the Great Plains in terms of a Eurocentric narrative of westward expansion. Though some sites are changing (e.g., Little Bighorn), others are not (e.g., Scotts Bluff). Even those sites that have changed still retain important elements of traditional narratives, which often date to the 1930s or to the Mission 66 period (1956-66). The newest sites, such as Washita Battlefield, tell newer stories that resonate well with today's visitors. These provide a model for revising older sites. Giving greater attention to causes and consequences, aiming for a richer mix of disciplinary …


Droughtscape, Fall 2012, National Drought Mitigation Center Oct 2012

Droughtscape, Fall 2012, National Drought Mitigation Center

DroughtScape: Quarterly Newsletter of the National Drought Mitigation Center (2007–2023)

Contents

Director’s report

Updated resources

Drought outlook and review

2012 and past droughters

Summer impacts summary

Urban planners and drought

USDM wins CLEAN seal

Meixiu Yu's Chinese SPEI

Ethiopian project

Mexican VegDRI

Drought monitor sculpture


Tujiin Nars: A Story Of The Forest, Julia Bowman Oct 2012

Tujiin Nars: A Story Of The Forest, Julia Bowman

Independent Study Project (ISP) Collection

This paper uses the northern Mongolian pine tree forest called Tujiin Nars as a case study to examine forestry and reforestation projects in Mongolia. It outlines the general history of Mongolian forests from socialism to present day, looking specifically at Tujiin Nars. It goes on to identify and examine the five most important factors in the successful reforestation of Tujiin Nars: a stronger economy in Selenge Aimag, committed civil servants, forest policy with harsher penalties for illegal loggers, government support, and local and global environmental awareness trends.


Who Else Would Plant The Trees? A Status Update On The Pemba Flying Fox, Hannah “Hawa” Grose, Catherine Grace “Rahma” Clemmens Oct 2012

Who Else Would Plant The Trees? A Status Update On The Pemba Flying Fox, Hannah “Hawa” Grose, Catherine Grace “Rahma” Clemmens

Independent Study Project (ISP) Collection

This study assesses the current population of Pemba Flying Fox, Pteropusvoeltzkowi, at four key locations on Pemba Island off the coast of Tanzania previously noted as highly populated roost sites: Ngezi National Forest, Wete, Kidike, and MsituwaMbiji. We evaluate local knowledge, perceptions, and practices of communities surrounding the Pemba Flying Fox. This study also documents roosting and migratory patterns of the bats. We hypothesize a growth in bat population, an overall positive community perception of the bats, and a greater amount of conflict between fruit farmers and Pteropusvoeltzkowi. Results showed a decrease in estimated population. Additionally, reverse correlation was found …


Evaluating A Primate Sanctuary: Population Assessment Of The Common Squirrel Monkey (Saimiri Sciureus) On Sumak Allpa, Ecuador, Claire Leichter Oct 2012

Evaluating A Primate Sanctuary: Population Assessment Of The Common Squirrel Monkey (Saimiri Sciureus) On Sumak Allpa, Ecuador, Claire Leichter

Independent Study Project (ISP) Collection

The common squirrel monkey (Saimiri sciureus) population on Sumak Allpa was assessed during 33 observation periods between November 5th and November 24th of 2012. Sumak Allpa is a 113.15-hectare island on the Napo River in the Orellana Province of Amazonian Ecuador that has been functioning as a primate sanctuary since 2005. Squirrel monkeys were surveyed during 1 to 3 hour observation walks in the mornings, afternoons, and evenings. During two occasions, the island was divided among multiple observers at the same time, including one observer in a canoe on the exterior of the island, to allow …


Hydro Power, People Power: Hydroelectricity’S Potential For Community Development, With A Focus On The Khimti 1 Project, Amelia Prior Oct 2012

Hydro Power, People Power: Hydroelectricity’S Potential For Community Development, With A Focus On The Khimti 1 Project, Amelia Prior

Independent Study Project (ISP) Collection

Hydropower, a source of renewable energy that transforms water into electricity, has great potential in Nepal. It can be used to electrify homes, increase efficiency of agriculture, and improve businesses to spur economic growth. This research will examine the current status of hydropower in Nepal and the main obstacles to its expansion. More importantly, however, is the importance on developing hydropower responsibly and ethically. Harnessing the energy and generating electricity is not enough; hydropower projects should involve their surrounding communities, affecting genders, ethnic groups, and socio-economic classes equally. This research will examine how communities are affected by hydroelectricity projects and …


Economics Of Nuclear Power And Climate Change Mitigation Policies, Nico Bauer, Robert J. Brecha, Gunnar Luderer Oct 2012

Economics Of Nuclear Power And Climate Change Mitigation Policies, Nico Bauer, Robert J. Brecha, Gunnar Luderer

Physics Faculty Publications

The events of March 2011 at the nuclear power complex in Fukushima, Japan, raised questions about the safe operation of nuclear power plants, with early retirement of existing nuclear power plants being debated in the policy arena and considered by regulators. Also, the future of building new nuclear power plants is highly uncertain. Should nuclear power policies become more restrictive, one potential option for climate change mitigation will be less available. However, a systematic analysis of nuclear power policies, including early retirement, has been missing in the climate change mitigation literature. We apply an energy economy model framework to derive …


Impacts Of Climate Change On The Surface Water Balance Of The Central United States, 1984–2007, Bo Dong Oct 2012

Impacts Of Climate Change On The Surface Water Balance Of The Central United States, 1984–2007, Bo Dong

School of Natural Resources: Dissertations, Theses, and Student Research

The climate system and the hydrologic cycle are strongly connected with each other. Understanding the interactions between these two systems is important, since variations in climate can trigger extensive changes in the hydrologic cycle, with significant impacts on agriculture, ecosystems, and society. Observations over the central U.S. in recent decades show numerous changes in climatic variables. This includes decreases in cloud cover and wind speed, increases in air temperature, and seasonal shifts in precipitation rate and rain/snow fraction. To assess the impacts of these variations in climate on the regional water cycle, a terrestrial ecosystem/land surface hydrologic model (Agro-IBIS) is …


The Attitudes And Perceptions Of The Local People Towards The Durgun Hydropower Plant, Francis H. Clougherty Oct 2012

The Attitudes And Perceptions Of The Local People Towards The Durgun Hydropower Plant, Francis H. Clougherty

Independent Study Project (ISP) Collection

Humans have been using the kinetic energy generated by waters movement in the hydrologic cycle for thousands of years. Since the late 19th century people have harnessed this energy source and utilized it as a means of generating electricity. The use of hydropower in many different ways can be found in countries all over the world, including the United States, Canada, Brazil, Argentina, the Democratic Republic of the Congo, Egypt, Spain, Turkey, India, China and, of course Mongolia. However, in some developed countries including the United States and Sweden there is a growing movement of hydropower stations and dam …


Manifestations Of Tibetan Buddhism In Pudacuo National Park And Its Effectiveness As An Environmental Education Tool, Ellen Martin Oct 2012

Manifestations Of Tibetan Buddhism In Pudacuo National Park And Its Effectiveness As An Environmental Education Tool, Ellen Martin

Independent Study Project (ISP) Collection

Pudacuo National Park in Shangri-la, Yunnan is mainland China’s first national park and comprehensive conservation and eco-tourism attempt. The Nature Conservancy worked with Yunnan provincial government to establish park guidelines and advocate for certain conservation measures. One of the important guidelines that The Nature Conservancy included was local cultural preservation. A primary goal of this experiment in US-modeled national parks is to ensure the longevity of traditional values and beliefs in the parkland area. Pudacuo National Park is not only attempting to conserve the local Tibetan Buddhist tradition but also is attempting to capitalize on the uniqueness of the experience …


A Comparison Of Qualitative And Quantitative Ecological Assessment Methods Of Mangroves In Southwestern Madagascar, Sondra Winders Oct 2012

A Comparison Of Qualitative And Quantitative Ecological Assessment Methods Of Mangroves In Southwestern Madagascar, Sondra Winders

Independent Study Project (ISP) Collection

Mangroves are unique, tropical, intertidal forests that, among many other important functions, serve as large carbon sinks for the sequestration of atmospheric CO2. This project qualitatively assessed the mangrove forest of Honko Mangrove Conservation and Education (Tulear, Madagascar) in conjunction with Blue Ventures for a proposed Plan Vivo carbon stock project. The qualitative results were then compared with quantitative measurements in order to determine the most effective method of ecological assessment. Sixty-three stands of mangrove forest covering 9.72km2 were identified and mapped. Level of harvest, species composition, density, canopy cover, dominant height, dominant DBH, forest condition and composition were compared …


Nevada Interagency Volunteer Program: Helping Hands Across Public Lands - Phase Ii: Quaterly Progress Report, Period Covering July 1, 2012 To September 30, 2012, Margaret N. Rees Sep 2012

Nevada Interagency Volunteer Program: Helping Hands Across Public Lands - Phase Ii: Quaterly Progress Report, Period Covering July 1, 2012 To September 30, 2012, Margaret N. Rees

Get Outdoors Nevada

  • The number of records in the volunteer database is 8,511, an increase from 8,308 in July.
  • Results show an average of 1,094 visits per month, and an average of 2,729 pages viewed per month.
  • Get Outdoors Nevada supp01ied 6 volunteer events in a variety of ways. These events utilized 214 volunteers whom contributed approximately 856 hours of service.
  • The team continues planning an alternative bus tour.
  • The team rolled out their media plan .
  • The IVP team has continued planning for the annual volunteer recognition banquet.
  • No volunteer trainings were conducted this quarter, but two are planned for next quarter.


Limnological Assistance For Lake Mead National Recreation Area: Quarterly Report, Period Ending September 30, 2012, Margaret N. Rees Sep 2012

Limnological Assistance For Lake Mead National Recreation Area: Quarterly Report, Period Ending September 30, 2012, Margaret N. Rees

Limnological Studies

Continuation of Project 1

  • The research effort titled Growth of adult quagga mussels within Las Vegas Wash/Las Vegas Bay is ongoing.

Continuation of Project 2

  • Additional content was contributed to the future NPS-funded U.S. Geological Survey Circular ‘state-of-the-science’ report for Lakes Mead and Mohave. UNLV performed a new co-editing and coordinating task related to this product as the major focus of this quarter’s effort; the master version of this report is on schedule for delivery to the editorial team during the first week of October 2012.

Modification Activities:

Extended Short-term Continued Limnological Assistance

Quagga Mussel Objectives:

  • Most juvenile/adult quagga mussel …


Comparative Transcriptome Analysis Of Two Olive Cultivars In Response To Nacl-Stress, Christos Bazakos, Maria E. Manioudaki, Ioannis Therios, Demetrios Voyiatzis, Dimitris Kafetzopoulos, Tala Awada, Panagiotis Kalaitzis Aug 2012

Comparative Transcriptome Analysis Of Two Olive Cultivars In Response To Nacl-Stress, Christos Bazakos, Maria E. Manioudaki, Ioannis Therios, Demetrios Voyiatzis, Dimitris Kafetzopoulos, Tala Awada, Panagiotis Kalaitzis

School of Natural Resources: Faculty Publications

Background: Olive (Olea europaea L.) cultivation is rapidly expanding and low quality saline water is often used for irrigation. The molecular basis of salt tolerance in olive, though, has not yet been investigated at a system level. In this study a comparative transcriptomics approach was used as a tool to unravel gene regulatory networks underlying salinity response in olive trees by simulating as much as possible olive growing conditions in the field. Specifically, we investigated the genotype-dependent differences in the transcriptome response of two olive cultivars, a salt-tolerant and a salt-sensitive one.

Methodology/Principal Findings: A 135-day long …


Flow, Nutrients, And Light Availability Influence Neotropical Epilithon Biomass And Stoichiometry, Tyler J. Kohler, Thomas N. Heatherly Ii, Rana W. El-Sabaawi, Eugenia Zandona, Michael C. Marshall, Alexander S. Flecker, Catherine M. Pringle, David N. Reznick, Steven A. Thomas Aug 2012

Flow, Nutrients, And Light Availability Influence Neotropical Epilithon Biomass And Stoichiometry, Tyler J. Kohler, Thomas N. Heatherly Ii, Rana W. El-Sabaawi, Eugenia Zandona, Michael C. Marshall, Alexander S. Flecker, Catherine M. Pringle, David N. Reznick, Steven A. Thomas

School of Natural Resources: Faculty Publications

Light, nutrient availability, and flow are strong factors controlling the elemental composition and biomass of epilithon in temperate stream ecosystems. However, comparatively little is known about these relationships in tropical streams. We investigated how gradients of light and nutrient availability, seasonality, and habitat influenced epilithon biomass, chlorophyll a, and nutrient ratios in montane streams of Trinidad, West Indies. We sampled 4 focal tributaries of a single river, 2 of which had canopies experimentally thinned, every other month over a 2-y period to observe temporal dynamics and light effects on epilithon. We also sampled 18 sites across Trinidad’s Northern Range Mountains …


Movement, Habitat Use And Detection Probability Of Bridle Shiner Estimated By Patch Occupancy Modeling In A Connecticut Watershed, Timothy Jensen Aug 2012

Movement, Habitat Use And Detection Probability Of Bridle Shiner Estimated By Patch Occupancy Modeling In A Connecticut Watershed, Timothy Jensen

Master's Theses

The bridle shiner (Notropis bifrenatus) is believed to have once been an important prey item throughout its native range; however, recent reports suggest populations have declined significantly and the species is now widely considered as imperiled. Habitats that are associated with this species are typically difficult to sample using traditional methods, making it unclear how much of the observed range reduction could be actual or perceived. My objectives were to estimate detection probability of bridle shiner, evaluate the importance of habitat on their distribution, and determine patterns of movement among habitat patches. I employed a repeated surveys design …


Valuing Improvements To Coastal Waters Using Choice Experiments: An Application To Revisions Of The Eu Bathing Waters Directive, Stephen Hynes, Dugald Tinch, Nick Hanley Aug 2012

Valuing Improvements To Coastal Waters Using Choice Experiments: An Application To Revisions Of The Eu Bathing Waters Directive, Stephen Hynes, Dugald Tinch, Nick Hanley

Working Papers

Planned changes to the European Union’s Bathing Waters Directive (2006/7 EC) will force member states to produce improvements in a number of parameters of coastal water quality. This study uses the choice experiment method to estimate the economic benefits attached to such improvements, based on a sample of recreationalists on beaches in Ireland. The analysis indicates that improvements in all of the bathing water related attributes studied result in positive willingness to pay, and also show evidence of scope effects. Using random parameters and latent class modelling techniques, potential heterogeneity in preferences is then investigated and shown to be present …


Role Of The Leguminous Shrub Amorpha Canescens (Leadplant) In The Nebraska Sandhills Grasslands: Water Relations And Patterns Of Water Uptake, Adam Yarina Aug 2012

Role Of The Leguminous Shrub Amorpha Canescens (Leadplant) In The Nebraska Sandhills Grasslands: Water Relations And Patterns Of Water Uptake, Adam Yarina

School of Natural Resources: Dissertations, Theses, and Student Research

This study investigated the ecophysiological role of Amorpha canescens, a leguminous shrub native to the Nebraska Sandhills. Although A. canescens is an important ecological player in the Sandhills, its impacts on the surrounding plant community are poorly understood. To remedy this, two sites were selected for study at the Gudmundsen Sandhills Laboratory near Whitman, Nebraska – one with A. canescens (G-L) and one without A. canescens (G-NL). Both sites contained five representative herbaceous species: two C3 grasses (Hesperostipa comata and Koeleria macrantha), two C4 grasses (Andropogon hallii and Calamovilfa longifolia), and one forb …


What Factors Influence Consumers' Willingness To Purchase And Consume Carbon-Labeled Rice: A Comparative Study Between Arkansas And Belgium, John A. Kelley Aug 2012

What Factors Influence Consumers' Willingness To Purchase And Consume Carbon-Labeled Rice: A Comparative Study Between Arkansas And Belgium, John A. Kelley

Graduate Theses and Dissertations

Climate change is an issue of growing importance around the globe. As global population increases so does attention focused on human contributions to climate change. One major way humans contribute to climate change is through our diets. Agricultural production is a major source of global greenhouse emissions. It has been estimated that food production is responsible for a large majority of the methane and nitrous oxide which is emitted into our atmosphere each year. Carbon footprint labeling has been developed to give consumers a way to lower their footprint and help lower emissions of greenhouse gasses. At least one retailer, …


Understanding The Pathoecological Relationship Between Ancient Diet And Modern Diabetes Through Coprolite Analysis: A Case Example From Antelope Cave, Mojave County, Arizona, Karl J. Reinhard, Keith L. Johnson, Sara Leroy-Toren, Kyle Wieseman, Isabel Teixeira-Santos, Mônica Vieira Aug 2012

Understanding The Pathoecological Relationship Between Ancient Diet And Modern Diabetes Through Coprolite Analysis: A Case Example From Antelope Cave, Mojave County, Arizona, Karl J. Reinhard, Keith L. Johnson, Sara Leroy-Toren, Kyle Wieseman, Isabel Teixeira-Santos, Mônica Vieira

School of Natural Resources: Faculty Publications

The elevated prevalence of non-insulin-dependent diabetes mellitus (NIDDM) in Native Americans of the Southwest has been explained by several authors in terms of a dietary change from preindustrial traditional foods to modern foods. Physiology adapted to traditional foods became deleterious during the process of modernization. Although several versions of this hypothesis exist, they all relate to the rise in modern NIDDM with change from prehistoric subsistence practices to modern dietary practices. This is especially true for the Southwestern desert tribes of Arizona and New Mexico. Coprolite analysts have been recovering the sort of data needed by diabetes researchers to explore …


Interactions Among Evaporation, Ice Cover, And Water Temperature On Lake Superior: Decadal, Interannual, And Seasonal Variability, Katherine Van Cleave Aug 2012

Interactions Among Evaporation, Ice Cover, And Water Temperature On Lake Superior: Decadal, Interannual, And Seasonal Variability, Katherine Van Cleave

School of Natural Resources: Dissertations, Theses, and Student Research

Lake Superior, the largest freshwater lake in the world by surface area, has enormous impacts on the regional weather and climate. The lake also comprises over half of the total water volume in the Great Lakes system and is an important resource for commercial shipping, water supplies, hydropower, recreation, and aquatic ecosystems. Water temperature and evaporation on Lake Superior have been found to be increasing in recent decades, while ice cover has been decreasing at a very rapid pace. A careful analysis of the long-term trends, however, shows that these changes have not been linear through time. Rather, a step-change …


River Otter (Lontra Canadensis) Home Range, Habitat Use, Overnight Movement, And Survival In The Platte River Of Nebraska, Samuel P. Wilson Aug 2012

River Otter (Lontra Canadensis) Home Range, Habitat Use, Overnight Movement, And Survival In The Platte River Of Nebraska, Samuel P. Wilson

School of Natural Resources: Dissertations, Theses, and Student Research

River otters (Lontra canadensis) are native to Nebraska but were extirpated by the early 1900s. The Nebraska Game and Parks Commission (NGPC) reintroduced river otters during 1986­–1991 to restore the species in the state but little is known regarding the habitat needs and status of this high profile threatened species. To provide information for management I conducted research to determine home range, habitat use, overnight movement distance, and annual survival of river otters in the central Platte River of Nebraska.

I trapped, implanted telemetry transmitters, and tracked 18 river otters during 2006–2009. I obtained 996 locations and constructed …


A Reexamination Of The Eastern Collared Lizard (Crotaphytus Collaris Collaris) In Arkansas, Ashley A. Grimsley Aug 2012

A Reexamination Of The Eastern Collared Lizard (Crotaphytus Collaris Collaris) In Arkansas, Ashley A. Grimsley

Graduate Theses and Dissertations

Loss of suitable habitat is a threat to species worldwide. Habitat destruction, including loss, change, and fragmentation of habitat, is the leading cause of species extinction. Eastern collared lizards (Crotaphytus collaris collaris) are habitat specialists on glades. Both C. c. collaris and glade habitats are rare and of special concern in the state of Arkansas. Many glade populations have already been extirpated in the Ozarks of Arkansas and Missouri. Increasing knowledge of the distribution, habitat structure, and population dynamics of C. c. collaris is important to ensure the survival of this species in Arkansas.

A literature review of …