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Articles 91 - 117 of 117
Full-Text Articles in Entire DC Network
Constructing Understory Foliar Biomass Equations For Use With Standard Inventory Data In Western Montana, Melinda K. Stivers
Constructing Understory Foliar Biomass Equations For Use With Standard Inventory Data In Western Montana, Melinda K. Stivers
Graduate Student Theses, Dissertations, & Professional Papers
No abstract provided.
1997 Commencement Program, Seattle University
1997 Commencement Program, Seattle University
Commencement Programs
No abstract provided.
Environmental Law - The Public Trust Doctrine - Possible State Violations And The Potential For United States Supreme Court Review, Laura A. Schelter
Environmental Law - The Public Trust Doctrine - Possible State Violations And The Potential For United States Supreme Court Review, Laura A. Schelter
Penn State Environmental Law Review (1991 - 2011)
No abstract provided.
Ecotourism Anthropology And The Ecosystem : Developing Sustainable Tourism : Case Study - Belize C.A., James Anthony Flanagan
Ecotourism Anthropology And The Ecosystem : Developing Sustainable Tourism : Case Study - Belize C.A., James Anthony Flanagan
Graduate Student Theses, Dissertations, & Professional Papers
No abstract provided.
Land/Water Interface Delineation Using Neural Networks., Rajabhushanam Cherukuri
Land/Water Interface Delineation Using Neural Networks., Rajabhushanam Cherukuri
LSU Historical Dissertations and Theses
The rapid decline in acreage of land areas in wetlands caused by frequent inundations and flooding has brought about an increased awareness and emphasis on the identification and inventory of land and water areas. This dissertation evaluates three classification methods--Normalized Difference Vegetation Index technique, Artificial Neural Networks, and Maximum-Likelihood classifier for the delineation of land/water interface conditions using Landsat-TM imagery. The effects of three scaling algorithms, including resampling by aggregation, Gaussian smoothing, and local variance analysis, on the classification accuracy are analyzed to determine how the delineation, quantification and analysis of land/water boundaries relate to problems of mixed pixels, scale …
Problems With The Interpretation Of Mark-Release-Recapture Data In Subterranean Termites (Isoptera: Rhinotermitidae), Anthony D. Curtis, Deborah A. Waller
Problems With The Interpretation Of Mark-Release-Recapture Data In Subterranean Termites (Isoptera: Rhinotermitidae), Anthony D. Curtis, Deborah A. Waller
Biological Sciences Faculty Publications
The Lincoln index (Peterson method) is frequently used to estimate animal population size in mark-release-recapture studies. We tested the accuracy of this method to estimate termite colony size using logs infested with termites that were maintained in the laboratory. Termites were fed paper towels dyed either with 0.05% or 0.1% (w/w) of the dye marker Nile blue and released into their host logs in the laboratory. Following recapture a week later, estimates of termite population size for termites dyed with 0.05% Nile blue, and were approximately 3 times greater for termites dyed with 0.1% Nile blue. Concentrations of 0.1% Nile …
Observations On Mass Mortalities Of The Sooty Eel, Bascanichthys Bascanium, And The Speckled Worm Eel, Myrophis Punctatus, Associated With A Fish Kill In The Mississippi Sound, James S. Franks, Ross P. Dodds
Observations On Mass Mortalities Of The Sooty Eel, Bascanichthys Bascanium, And The Speckled Worm Eel, Myrophis Punctatus, Associated With A Fish Kill In The Mississippi Sound, James S. Franks, Ross P. Dodds
Gulf and Caribbean Research
Mass mortalities of the sooty eel, Bascanichthys bascanium, and the speckled worm eel, Myrophis punctatus, were observed in association with a fish kill which occurred the morning of 18 June 1994 on the south shore of Deer Island, a nearshore barrier island located off Biloxi, Mississippi. B. bascanium and M. punctatus, as well as other fishes, were found dead and dying near the shore in reddish-brown water and along a lengthy stretch of fringing sandy beach. Both species of eels are infrequently reported from Mississippi waters but were the most abundant fishes recorded from the kill. A …
Acute And Chronic Exposure To Lead: Cellular And Behavioral Effects On The Pond Snail Helisoma Trivolvis, Virginia T. Bennett
Acute And Chronic Exposure To Lead: Cellular And Behavioral Effects On The Pond Snail Helisoma Trivolvis, Virginia T. Bennett
College of Graduate Studies: Theses & Dissertations (1964–2006)
The focus of this study is on the effects of lead on Helisoma trivolvis, a pulmonate pond snail. Many species of molluscs are being used as bioindicators of environmental toxins. To provide a background for the reader, a brief history and description of the Phylum Mollusca (at the class level) is presented in Chapter 1. A second chapter (Ch. 2) is concerned with lead and its effects. A synopsis of past and present studies that show the interaction between lead and molluscs is given in Chapter 3, then two experimental chapters follow. The first experimental chapter (Ch. 4) is …
The Effects Of Acculturation On The Cree And Ojibwa Indians As A Result Of The Fur Trade, 1760-1820, Lucinda Glisson Schumann
The Effects Of Acculturation On The Cree And Ojibwa Indians As A Result Of The Fur Trade, 1760-1820, Lucinda Glisson Schumann
Theses and Dissertations
No abstract provided.
The Impact Of Permaculture On The Above-Ground Mesofaunal Communities In The Perth Metropolitan Area, Ruth C. D'Sanges
The Impact Of Permaculture On The Above-Ground Mesofaunal Communities In The Perth Metropolitan Area, Ruth C. D'Sanges
Theses : Honours
Conventional agricultural practices (tillage, extensive application of synthetic fertilisers and biocides) exert substantial disturbance on soil ecosystems, consequently causing severe land degradation through loss of soil organic matter. These practices also place significant pressure on the soil inhabitants. However, permaculture systems practice non-tillage and extensive mulching. These non-tillage practices reduce the amount of perturbation on the litter invertebrates and encourage their abundances. The aims of this study were to describe the above-ground mesofaunal communities in the mulch layer of selected urban permaculture systems in the Perth Metropolitan area. This included determining the faunal abundance and diversity. Four permaculture sites were …
Evaluating The Growth Basal Area Method As A Tool For Estimating Site Productivity In Uneven-Aged Ponderosa Pine Stands, Christopher W. Woodall
Evaluating The Growth Basal Area Method As A Tool For Estimating Site Productivity In Uneven-Aged Ponderosa Pine Stands, Christopher W. Woodall
Graduate Student Theses, Dissertations, & Professional Papers
No abstract provided.
Camelid Introduction And Substitution Plan| A Sustainable Land Use Alternative For Pastoralists In Sangay National Park, Ecuador, P. Shane Mccarthy
Camelid Introduction And Substitution Plan| A Sustainable Land Use Alternative For Pastoralists In Sangay National Park, Ecuador, P. Shane Mccarthy
Graduate Student Theses, Dissertations, & Professional Papers
No abstract provided.
Landscape Cover-Type Modeling Using A Multi-Scale Thematic Mapper Mosaic, Collin G. Homer, R. Douglas Ramsey, Thomas C. Edwards Jr., Allan Falconer
Landscape Cover-Type Modeling Using A Multi-Scale Thematic Mapper Mosaic, Collin G. Homer, R. Douglas Ramsey, Thomas C. Edwards Jr., Allan Falconer
Wildland Resources Faculty Publications
Landscape ecological applications of remotely sensed data are needed over increasingly larger areas and at finer spatial scales. Within the framework of the National Biological Service Gap Analysis program, 36 Utah cover types were modeled from a state-wide Landsat TM mosaic created from 24 scenes at 30-metre resolution (219,883 sq km). The state was subset into three ecoregions for classification, with cover-type association to spectral classes defined using a two-step modeling approach. Steps included post-classification correlation of 1,758 state-wide field training sites to spectral classes, and post-classification ancillary GIS modeling using ecological parameters of elevation, slope, aspect, and location to …
Parasite Biodiversity And Emerging Pathogens: A Role For Systematics In Limiting Impacts On Genetic Resources, Eric P. Hoberg
Parasite Biodiversity And Emerging Pathogens: A Role For Systematics In Limiting Impacts On Genetic Resources, Eric P. Hoberg
Harold W. Manter Laboratory of Parasitology: Faculty Publications
Emergence of pathogenic organisms continues as a threat to overall biodiversity and genetic resources. Macroparasites including helminths constitute a potential threat to economically important resources in agriculture and conservation biology. Limitation of this threat can be achieved through survey and inventory for biodiversity and the application of systematics to understand the host range , biogeography and history of faunas. Systematics constitutes the foundation for recognition of endemic and introduced elements of faunas and the basis for predicting the behavior of pathogens introduced to new ecological settings or host groups. The basis for emergence of pathogens has both a deep historical …
Habitat Patch Dynamics Of Desert Bighorn Sheep Ovis Canadensis Nelsoni In The Eastern Mojave Desert, Darren Del Divine
Habitat Patch Dynamics Of Desert Bighorn Sheep Ovis Canadensis Nelsoni In The Eastern Mojave Desert, Darren Del Divine
UNLV Retrospective Theses & Dissertations
The individual chapters of this Dissertation were designed to examine desert bighorn habitat, and the disjunct nature of that habitat. The findings of the first chapter illustrated that although 30 m elevation data yielded a more accurate depiction of the landscape, 100 m data was still adequate for determining habitat quality. The second chapter illustrated that the traditional bighorn habitat model was inadequate when applied to four Eastern Mojave Desert mountain ranges because of its unrealistic distance to permanent water requirement. It was also determined that a single habitat definition could not be formulated that worked equally well on all …
Low-Income Mothers With And Without Intellectual Disability: Interactions In Contextual Environments., Lillian A. Wise
Low-Income Mothers With And Without Intellectual Disability: Interactions In Contextual Environments., Lillian A. Wise
All ETDs from UAB
No abstract provided.
A Study Of The Lichens At Rocky Branch Nature Preserve, Clark County, Illinois, Eric B. Grunder
A Study Of The Lichens At Rocky Branch Nature Preserve, Clark County, Illinois, Eric B. Grunder
Masters Theses
In 1971, a graduate student at Eastern Illinois University, James E. Wiedman, studied the lichen flora of Rocky Branch Nature Preserve, Clark County, Illinois. During his study he collected, identified, and recorded a total of 64 lichen species. Since 1971, Rocky Branch Nature Preserve has experienced a dramatic increase in use by people and a concomittant decline in the quality of lichen habitats. In order to assess the decline of suitable lichen habitats and the reduction of lichen species a second study of the lichens at Rocky Branch Nature Preserve was undertaken. As part of this study, ten habitat sites …
Reproductive Ecology And Relative Utilization Of Salix Bebbiana (Bebb Willow) In Southcentral Idaho And Southwestern Montana, Todd Hoitsma
Reproductive Ecology And Relative Utilization Of Salix Bebbiana (Bebb Willow) In Southcentral Idaho And Southwestern Montana, Todd Hoitsma
Graduate Student Theses, Dissertations, & Professional Papers
No abstract provided.
The Effect Of Effort And Reinforcer Magnitude On Video Foraging In Rhesus Monkeys, Lisa Fosbender
The Effect Of Effort And Reinforcer Magnitude On Video Foraging In Rhesus Monkeys, Lisa Fosbender
Graduate Student Theses, Dissertations, & Professional Papers
No abstract provided.
An Ethnographic Study Of Family Health In Appalachian Microsystems., Sharon Ann Denham
An Ethnographic Study Of Family Health In Appalachian Microsystems., Sharon Ann Denham
All ETDs from UAB
No abstract provided.
A Search For Biologically Active Phytochemicals From Endemic Plants Of The Southeastern United States., Steven Lynn Robbs
A Search For Biologically Active Phytochemicals From Endemic Plants Of The Southeastern United States., Steven Lynn Robbs
LSU Historical Dissertations and Theses
In an investigation of allelopathy in the Florida scrub, bioassays with terpenes were performed against: Lactuca sativa, Rudbeckia hirta, Leptochloa dubia and Schizachyrium scoparium. Cineole was phytotoxic against Rudbeckia at 17 ppm and Lactuca at 165 ppm. (S)-camphor was phytotoxic to Rudbeckia at 1 ppm, Lactuca at 28 ppm, and Leptochloa and Schizachyrium at 134 ppm. (R)-Camphor, myrtenol and myrtenal were phytotoxic against Rudbeckia at concentrations of 28, 25 and 15 ppm respectively. Farnesol stimulated the germination of Schizachyrium at concentrations up to 50 ppm and at 100 ppm it reduced the radicle length of all test species. Geraniol stimulated …
The Use Of Secondarily Treated Wastewater Effluent For Forested Wetland Restoration In A Subsiding Coastal Zone., John M. Rybczyk
The Use Of Secondarily Treated Wastewater Effluent For Forested Wetland Restoration In A Subsiding Coastal Zone., John M. Rybczyk
LSU Historical Dissertations and Theses
Insufficient sedimentation, coupled with high rates of relative sea-level rise (RSLR), are two important factors contributing to wetland loss in coastal Louisiana. I hypothesized that adding nutrient rich, secondarily treated, wastewater effluent to subsiding coastal wetlands in Louisiana could promote vertical accretion in these systems through increased organic matter production and subsequent deposition, and allow accretion to keep pace with estimated rates of RSLR (subsidence plus eustatic sea-level rise). To test this hypothesis, I measured processes affecting wetland elevation including, organic matter decomposition, sediment accretion, aboveground primary production, and, plant tissue nutrient (N, P, K, Ca, Mg, Fe) concentrations, in …
The Radioresistance Of Deinococcus Radiodurans., Valerie Mattimore
The Radioresistance Of Deinococcus Radiodurans., Valerie Mattimore
LSU Historical Dissertations and Theses
Deinococcus radiodurans is a remarkably ionizing radiation resistant bacterium. As a vegetative cell it is capable of withstanding 5,000 Gy ionizing radiation without evidence of death or mutation. D. radiodurans survives irradiation by repairing DNA damage via an extremely efficient DNA repair system. However, this DNA repair system has not been completely defined. In addition, the selective process allowing the evolution of high level radioresistance has remained a question. This dissertation bolsters the understanding of the DNA repair system of D. radiodurans by characterizing a collection of ionizing radiation sensitive (IRS) mutants. The level of radioresistance is quantified and transformation …
Long Term Stability Of A Terrestrial Cave Community, Claudio Di Russo, Gianmaria Carchini, Mauro Rampini, Marco Lucarelli, Valerio Sbordoni
Long Term Stability Of A Terrestrial Cave Community, Claudio Di Russo, Gianmaria Carchini, Mauro Rampini, Marco Lucarelli, Valerio Sbordoni
International Journal of Speleology
We report data on the spatial structure and seasonal variation of the community of Valmarino cave, a medium sized sandstone cave, located a few kilometres from the coast line, in Central Italy. Due to both its habitat features and its relatively recent geological history, Valmarino cave is only inhabited by terrestrial, troglophilic elements, i.e facultative cave dwellers. By means of monthly censuses and density plot estimates we have investigated species abundance, diversity and their spatial organization, by considering separately samples from different cave sectors. Homogeneous sampling design allowed to compare series of samplings performed in 1974 and 1994. On the …
'Regional' Political Ecology And Underdevelopment In Appalachia: Case Studies From Two West Virginia Counties., James Todd Nesbitt
'Regional' Political Ecology And Underdevelopment In Appalachia: Case Studies From Two West Virginia Counties., James Todd Nesbitt
Graduate Theses, Dissertations, and Problem Reports (ETD)
This dissertation analyzes the environmental history of Pendleton and Randolph Counties, West Virginia, as it relates to underdevelopment within the broader Appalachian region. Theories of political ecology and reconstructed regional geography are used to gain a better understanding of the intersection between cultural practice and human use of the natural environment. Specifically, three case study locales are utilized in this study to demonstrate local variability in natural resource issues within the Appalachian region. Political ecology and reconstructed regional geography are integrated to create a conceptually and contextually refined 'regional' political ecology which accounts for issues of geographic scale and alternative …
The Foraging Ecology And Habitat Selection Of The Yellow-Plumed Honeyeater (Lichenostomus Ornatus) At Dryandra Woodland, Western Australia, Kellie Wilson
Theses : Honours
The foraging ecology and habitat selection of the Yellow-plumed Honeyeater was examined using observations and vegetation surveys at Dryandra Woodland, Western Australia. Foraging ecology data was collected over three seasons (autumn, winter and spring) in 1997 at three sites within Dryandra. Habitat selection studies involved 156 sites being surveyed for the presence or absence of the Yellow-plumed Honeyeater. The vegetation characteristics of the site were measured. Yellow-plumed Honeyeaters foraged by gleaning foliage most of the time. Bark and aerial foraging were also common. Birds clearly selected for tree height, preferring to forage on larger (older) trees which may be because …
The Summit Vegetation Of Saddle Mountain, Oregon Coast Range, Charles Thomas Carlson
The Summit Vegetation Of Saddle Mountain, Oregon Coast Range, Charles Thomas Carlson
Dissertations and Theses
Saddle Mountain (1000 m) is the highest peak in the Northern Oregon Coast Range. Meadows are found to occur at and near the summit of the mountain which contain abundant wildflowers. Although the majority of these meadow species have been collected and identified in the past no formal study has been done to classify them into communities. The purpose of this study is to examine the character and origin of the plant communities located at or near the summit of Saddle Mountain. Data were collected on 4 study sites during the Summer of 1996 and analysis of the data lead …