Aquaponics And Basil Plant Density,
2014
CSU-Sacramento
Aquaponics And Basil Plant Density, Danika L. Macmaster, Brook Murphy, Dudley Burton
STAR Program Research Presentations
Aquaponics is the use of water from a fish tank to provide nutrients to plants in a soil-less environment. The rocks cultivate the bacteria that turns the ammonia into nitrates that the plants need, and the plant bed functions as a filter for the fish tank. In this study, with the guidance of Doctor Dudley Burton, Doctor Brook Murphy, we researched the optimal plant density for basil in an Aquaponics system. We attempted to control or measure all the other variables to consider, as to isolate the variable of distance between plants. The water flow was spread through the plant …
Variation In Round Goby Feeding Interactions In Near-Shore Lake Michigan Based On Three Trophic Indicators,
2014
Purdue University
Variation In Round Goby Feeding Interactions In Near-Shore Lake Michigan Based On Three Trophic Indicators, Michael Lee Henebry
Open Access Theses
Understanding trophic interactions of non-native species is key to elucidating their potential ecological role in newly-invaded ecosystems. The Great Lakes region has long been characterized by a high rate of invasive species establishment. Round Goby (Neogobius melanostomus ) were first detected in Lake Michigan in 1994, and have since increased dramatically in abundance. While past studies of Round Goby in Lake Michigan have primarily focused on specific regions and habitats, Lake Michigan is a large, diverse system and Round Goby trophic interactions may vary across regions and over time. During May, July, and September 2010-2011, we collected Round Goby …
Report On The Workshop For Life Detection In Samples From Mars,
2014
European Space Agency
Report On The Workshop For Life Detection In Samples From Mars, Gerhard Kminek, Catherine Conley, Carlton C. Allen, Douglas H. Bartlett, David W. Beaty, Liane G. Benning, Rohit Bhatia, Penelope J. Boston, Caroline Duchaine, Jack D. Farmer, George J. Flynn, Daniel P. Glavin, Yuri Gorby, John E. Hallsworth, Rakesh Mogul, Duane Moser, P. Buford Price, Ruediger Pukall, David Fernandez-Remolar, Caroline L. Smith, Kenneth M. Stedman, Andrew Steele, Ramunas Stepanauskas, Henry Sun, Jorge L. Vago, Mary A. Voytek, Paul S. Weiss, Frances Westfall
Biology Faculty Publications and Presentations
The question of whether there is or was life on Mars has been one of the most pivotal since Schiaparellis’ telescopic observations of the red planet. With the advent of the space age, this question can be addressed directly by exploring the surface of Mars and by bringing samples to Earth for analysis. The latter, however, is not free of problems. Life can be found virtually everywhere on Earth. Hence the potential for contaminating the Mars samples and compromising their scientific integrity is not negligible. Conversely, if life is present in samples from Mars, this may represent a potential source …
Culturally Responsive 4-H Youth Development In Southeast Alaska,
2014
Utah State University Extension
Culturally Responsive 4-H Youth Development In Southeast Alaska, Deb Jones, Linda Skogrand
All Current Publications
No abstract provided.
Soil Moisture And Temperature Conditions Related To Cheatgrass Establishment Failure,
2014
Utah State University
Soil Moisture And Temperature Conditions Related To Cheatgrass Establishment Failure, Lauren Ducas
All Graduate Plan B and other Reports, Spring 1920 to Spring 2023
Cheatgrass, a widespread invasive plant, has taken over many rangelands in the Intermountain West. Restoration efforts have not met with much success. Early in cheatgrass’ growth period, if air temperatures fall too low and soils too dry, growth may be disrupted to the point of death of the cheatgrass plants. In this case, cheatgrass stands may revert to bare ground, providing opportunities for other invasive plants to establish, or possible restoration of native perennials. We conducted a computer modeling and observational field study to determine if air temperature and soil moisture conditions below its tolerance are associated with failure of …
Population Genetics And Microbial Communities Of The Gopher Tortoise (Gopherus Polyphemus),
2014
University of Southern Mississippi
Population Genetics And Microbial Communities Of The Gopher Tortoise (Gopherus Polyphemus), Daniel Lyle Gaillard
Dissertations
The gopher tortoise, Gopherus polyphemus, is an endangered species living in the southeastern United States. The recent and drastic decline in tortoise numbers has resulted in a multi-faceted approach to conserve this species. I used a population genetic approach to determine the population structure, genetic diversity and barriers to gene flow at a broad, regional and local scale. Tortoises are divided into five distinct genetic populations at the broad scale, the central populations have the highest levels of genetic diversity and the Tombigbee, Mobile, Apalachicola, Suwannee and St. John’s Rivers appear to be barriers to gene flow. At the regional …
Paleozoic Seed Bank And Their Ecological Significance,
2014
East Tennessee State University
Paleozoic Seed Bank And Their Ecological Significance, Petra Seka Yehnjong
Electronic Theses and Dissertations
Soil seed banks are a reservoir of viable seeds present in the soil in plant communities. They have been studied and characterized in various ways in different habitats. However, these studies are limited to modern seed banks. This study extends seed bank studies to the Paleozoic Era. It was hypothesized that size distribution and seed density in Paleozoic seed banks exhibit similar patterns as in modern seed banks. Seed sizes and seed density of fossil seed from Wise Virginia were estimated. Modern seed bank information was obtained from published data. Data were analyzed using one-way ANOVA and Kruskal-Wallis test. The …
Developing A Field Indicator For Suckering Ability Of Quaking Aspen,
2014
Utah State University
Developing A Field Indicator For Suckering Ability Of Quaking Aspen, Abbey M. Hudler Oksness
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Quaking aspen is an ecologically valuable deciduous tree species in the high elevation environment typical across many parts of western North America. It is a clonal tree species which primarily depends on vegetative regeneration by root suckering after an aboveground disturbance, e.g., wildfire, removes the stems. A flush of suckers will be stimulated after a disturbance and the resulting regeneration relies on available resources from the undamaged root system for resprouting. Due to wildfire suppression efforts of the last century, many aspen stands are considered mature, overmature, or decadent and lack regeneration to replace the overstory mortality. In the absence …
Variation In Vegetation And Microbial Linkages With Slope Aspect In A Montane Temperate Hardwood Forest,
2014
Marshall University
Variation In Vegetation And Microbial Linkages With Slope Aspect In A Montane Temperate Hardwood Forest, Frank S. Gilliam, Radim Hedl, Marketa Chudomelova, Rebecca L. Mcculley, Jim Nelson
Biological Sciences Faculty Research
Plant ecologists have long been interested in aspect-related contrasts of montane forests. Few studies have assessed correlation (linkage) among vegetation strata; fewer have included soil microbial communities. This study assessed contrasts in overstory, spring herbaceous, and soil microbial communities between northeast (NE) - and southwest (SW) -facing slopes in a second-growth West Virginia hardwood forest. We addressed three questions: (1) how do soil microbial, herbaceous layer, and overstory communities vary with slope aspect? (2) do forest vegetation strata and soil microbial communities exhibit linkage? (3) do biotic relationships and linkage vary with slope aspect? Moisture, organic matter, pH, soil NO …
Linking Temporal And Spatial Variability Of Millennial And Decadal-Scale Sediment Yield To Aquatic Habitat In The Columbia River Basin,
2014
Utah State University
Linking Temporal And Spatial Variability Of Millennial And Decadal-Scale Sediment Yield To Aquatic Habitat In The Columbia River Basin, Elijah Portugal
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Historically the Columbia River was amongst the most productive salmonidbearing watersheds in North America. Currently, salmonid populations have collapsed and are estimated at ten percent of historic levels. Because of this, there are thirteen, Endangered Species Act (ESA) listed distinct population segments within the Columbia River Basin (CRB). The Bonneville Power Administration (BPA) operates a substantial number of hydroelectric dams within the CRB. As the dams effectively block anadromy and are thought to be extremely detrimental to the long-term persistence of salmonid populations within the CRB, the BPA funds a series of programs to mitigate the impacts of dam operation. …
Assessing Changes In Waterfowl Population And Community Dynamics,
2014
Utah State University
Assessing Changes In Waterfowl Population And Community Dynamics, Beth E. Ross
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Studying long-term ecological studies can help ecologists understand what causes populations and communities of wildlife to change. Understanding these causes can help guide conservation efforts. Additionally, results from long-term datasets allow ecologists to predict how populations may shift with global change. Ecologists can then determine necessary management action to maintain sustainable populations in the future. However, there can be a large amount of “noise” in a long-term dataset. If ecologists fail to account for this noise, they may make incorrect management decisions. For example, samples taken in two nearby locations will likely be more similar than samples taken from two …
A Quantitative Approach To The Development Of Ecological Sites And State-And-Transition Models,
2014
Utah State University
A Quantitative Approach To The Development Of Ecological Sites And State-And-Transition Models, Matthew W. Van Scoyoc
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Changes in land-use and climate can trigger changes in ecosystem conditions and may be driving ecosystems toward undesired “states” that provide inadequate ecosystem services. If these changes are drastic enough, energy intensive restoration programs are necessary to restore ecosystems to previous states. Landscape classification systems based on “ecological potential” offer a robust framework to evaluate and manage ecosystems. The ecological site concept is one such landscape classification system that has been developed by the USDA Natural Resources Conservation Service (NRCS) and describes ecosystems and ecosystem dynamics relative to “reference conditions” and response to disturbance. Ecological sites have gained popularity with …
Environews #9: The Sunshine State Is In A State.,
2014
University of Western Ontario
Environews #9: The Sunshine State Is In A State., Richard Philp
Data and Test Instruments
Sewage contamination and fertilizer runoff are polluting Florida's springs and rivers and legislative protection is weak. Lion fish are invading northern Gulf waters.
Land Use And Climate Variability Amplify Carbon, Nutrient, And Contaminant Pulses: A Review With Management Implications,
2014
Associate Professor
Land Use And Climate Variability Amplify Carbon, Nutrient, And Contaminant Pulses: A Review With Management Implications, Sujay S. Kaushal, Peter M. Mayer, Philippe G. Vidon, Rose M. Smith, Micheal J. Pennino, Tamara A. Newcomer, Shuiwang Duan, Claire Welty, Kenneth T. Belt
United States Environmental Protection Agency: Publications
Nonpoint source pollution from agriculture and urbanization is increasing globally at the same time climate extremes have increased in frequency and intensity. We review >200 studies of hydrologic and gaseous fluxes and show how the interaction between land use and climate variability alters magnitude and frequency of carbon, nutrient, and greenhouse gas pulses in watersheds. Agricultural and urban watersheds respond similarly to climate variability due to headwater alteration and loss of ecosystem services to buffer runoff and temperature changes. Organic carbon concentrations/exports increase and organic carbon quality changes with runoff. Nitrogen and phosphorus exports increase during floods (sometimes by an …
The Great Salt Lake's Two Deep Brine Layers,
2014
Utah State University
The Great Salt Lake's Two Deep Brine Layers, Wayne A. Wurtsbaugh
Watershed Sciences Faculty Publications
No abstract provided.
Disassembly Of Actin Structures By Nanosecond Pulsed Electric Field Is A Downstream Effect Of Cell Swelling,
2014
Old Dominion University
Disassembly Of Actin Structures By Nanosecond Pulsed Electric Field Is A Downstream Effect Of Cell Swelling, Andrei G. Pakhomov, Shu Xiao, Olga N. Pakhomova, Iurii Semenov, Marjorie A. Kuipers, Bennett L. Ibey
Bioelectrics Publications
Disruption of the actin cytoskeleton structures was reported as one of the characteristic effects of nanosecond-duration pulsed electric field (nsPEF) in both mammalian and plant cells. We utilized CHO cells that expressed the monomeric fluorescent protein (mApple) tagged to actin to test if nsPEF modifies the cell actin directly or as a consequence of cell membrane permeabilization. A train of four 600-ns pulses at 19.2 kV/cm (2 Hz) caused immediate cell membrane poration manifested by YO-PRO-1 dye uptake, gradual cell rounding and swelling. Concurrently, bright actin features were replaced by dimmer and uniform fluorescence of diffuse actin. To block the …
Death Acceptance In Widowhood,
2014
University of Kentucky
Death Acceptance In Widowhood, Staci Ernsberger
Theses and Dissertations--Family Sciences
Death is a universal event that all living things experience. Older adults, in particular, are more mindful of death than younger generations because of their proximity and increased exposure to it. In addition, thoughts of one’s own death often increase with the death of a spouse. Previous research has explored the role of social support in death acceptance and the effect of previous marital satisfaction on a widow’s well-being. However, there is a lack of research regarding the experience of a widow’s personal death acceptance relative to spousal death acceptance and marital satisfaction. This phenomenological study aims to better understand …
A Glutathione-Independent Glyoxalase Of The Dj-1
Superfamily Plays An Important Role In Managing
Metabolically Generated Methylglyoxal In Candida Albicans,
2014
University of Nebraska - Lincoln
A Glutathione-Independent Glyoxalase Of The Dj-1 Superfamily Plays An Important Role In Managing Metabolically Generated Methylglyoxal In Candida Albicans, Sahar Hasim, Nur Ahmad Hussin, Fadhel Alomar, Keshore R. Bidasee, Kenneth W. Nickerson, Mark A. Wilson
Kenneth Nickerson Papers
Methylglyoxal is a cytotoxic reactive carbonyl compound produced by central metabolism. Dedicated glyoxalases convert methylglyoxal to D-lactate using multiple catalytic strategies. In this study, the DJ-1 superfamily member ORF 19.251/GLX3 from Candida albicans is shown to possess glyoxalase activity, making this the first demonstrated glutathione-independent glyoxalase in fungi. The crystal structure of Glx3p indicates that the protein is a monomer containing the catalytic triad Cys136- His137-Glu168. Purified Glx3p has an in vitro methylglyoxalase activity (Km = 5.5 mM andkcat = 7.8 s-1) that is significantly greater than that of …
Understanding Traditions And Practices Of Medicinal Plant Use In Carhuamayo, Junin, Peru,
2014
University of Montana - Missoula
Understanding Traditions And Practices Of Medicinal Plant Use In Carhuamayo, Junin, Peru, Anastasia Orkwiszewski
Graduate Student Theses, Dissertations, & Professional Papers
Understanding and preserving Traditional Ecological Knowledge and Practices (TEKP) are essential for the continued resilience and cultural diversity of humanity. TEKP faces a multitude of threats from habitat loss, growth of the market economy, globalization, and acculturation. Medicinal plant use in the high Andean town of Carhuamayo, Junín, was studied to assess the vibrancy of that particular branch of TEKP in that area, in what parts of the population it was held, and what factors influence its loss or growth. Gender, age, migrant status, and acculturation levels were not found to be statistically significant in predicting medicinal plant knowledge. Analysis …
Rhetoric And Science: Examining And Identifying The Rhetorical Techniques Used By Students In A Composition Classroom,
2014
University of Northern Iowa
Rhetoric And Science: Examining And Identifying The Rhetorical Techniques Used By Students In A Composition Classroom, Amanda Arp
Honors Program Theses
Student use of rhetoric can provide insight into student learning since rhetoric is, in part, epistemological. Epistemology refers to the study of the way someone thinks about a topic. Rhetoric is epistemological, therefore, because rhetoric is, at its core, the way ideas are thought about and expressed. Therefore, identifying and analyzing student usage of rhetorical techniques has the potential to allow a glimpse at the epistemological state of the student mind concerning their rhetorical learning. Insight drawn from knowing what students do and do not know concerning rhetoric could be extremely valuable to teachers in that it could pinpoint opportunities …
