Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- Sunflower (2)
- AM fungi (1)
- Arbuscular mycorrhizal fungi (1)
- Bioassay (1)
- Brine shrimp (1)
-
- Concentration (1)
- Ecophysiology (1)
- Fish (1)
- GWAS (1)
- Genome-wide association study (1)
- Genomics (1)
- Helianthus annuus (1)
- Hexaploid (1)
- Hyperspectral reflectance (1)
- Magnetoreception (1)
- Magnetotactic bacteria (1)
- Oxybenzone (1)
- Plant functional traits; Reflectance Spectroscopy; Partial Least Square Regression (PLSR); Support Vector Machine (SVM); Foliar Traits; Woody Plants (1)
- Sensory biology (1)
- Sleep Deprivation (1)
- Sleep and Alzheimer's disease (1)
- Sleep and Parkinson's (1)
- Sleep and anxiety (1)
- Sleep and mental health (1)
- Sleep deprivation and neurological disorders (1)
- Sunscreen (1)
- Taxodium distichum var. imbricarium; Pond Cypress; Cypress dome; Urbanization; Central Florida. (1)
- Tetraploid (1)
- UV filters (1)
- Whole genome duplication (1)
- Publication
- Publication Type
Articles 1 - 13 of 13
Full-Text Articles in Entire DC Network
Urbanization Impacts On Campus Cypress Domes, Jennifer Bennett, Ashley Boggs, Nathan Colonna, Angela Ferebee, Bruno Kallas
Urbanization Impacts On Campus Cypress Domes, Jennifer Bennett, Ashley Boggs, Nathan Colonna, Angela Ferebee, Bruno Kallas
The Pegasus Review: UCF Undergraduate Research Journal
Cypress domes are terrestrial freshwater ecosystems characterized by the presence of cypress trees (Taxodium spp.) growing in well-defined, dome-shaped clusters throughout the southeastern United States. These systems are one of many ecosystems in Florida facing increasing threats from human expansion and urbanization including fire suppression, logging, and hydrological alterations. This study sought to examine the impacts of urbanization on three cypress domes located on the University of Central Florida Orlando campus. To do this, we measured the defining traits, dendrochronology of Taxodium distichum var. imbricarium, and soil characteristics in each of the three selected domes. The cypress …
Genetic Control Of Arbuscular Mycorrhizal Colonization In Helianthus Annuus, Katherine Stahlhut
Genetic Control Of Arbuscular Mycorrhizal Colonization In Helianthus Annuus, Katherine Stahlhut
Honors Undergraduate Theses
Plant symbiosis with arbuscular mycorrhizal (AM) fungi provides many benefits for plants, including increased nutrient uptake, drought tolerance, and belowground pathogen resistance. In order to have a better understanding of the genetic architecture of mycorrhizal symbiosis, we conducted a genome-wide association study (GWAS) by phenotyping a diversity panel of cultivated sunflower (Helianthus annuus) for root colonization under inoculation with the AM fungus Rhizophagus intraradices. This mapping panel consists of 261 inbred lines that capture approximately 90% of the genetic diversity present in the cultivated sunflower germplasm. Using a mixed linear model approach with a high-density genetic map, we …
Validation And Optimization Of Hyperspectral Reflectance Analysis-Based Predictive Models For The Determination Of Plant Functional Traits In Cornus, Rhododendron, And Salix, Milton I. Valdiviezo
Validation And Optimization Of Hyperspectral Reflectance Analysis-Based Predictive Models For The Determination Of Plant Functional Traits In Cornus, Rhododendron, And Salix, Milton I. Valdiviezo
Honors Undergraduate Theses
Near infrared spectroscopy (NIR) has become increasingly widespread throughout various fields as an alternative method for efficiently phenotyping crops and plants at rates unparalleled by conventional means. With growing reliability, the convergence of NIR spectroscopy and modern machine learning represent a promising methodology offering unprecedented access to rapid, high throughput phenotyping at negligible costs, representing prospects that excite agronomists and plant physiologists alike. However, as is true of all emergent methodologies, progressive refinement towards optimization exposes potential flaws and raises questions, one of which is the cornerstone of this study. Spectroscopic determination of plant functional traits utilizes plants' morphological and …
Role Of Polyploidy In Leaf Functional Trait Evolution Across Wild Helianthus, Anestacia S. Robinson
Role Of Polyploidy In Leaf Functional Trait Evolution Across Wild Helianthus, Anestacia S. Robinson
Honors Undergraduate Theses
Whole genome duplication, or polyploidy, is a common process in plants by which failures in meiosis or fertilization result in offspring with twice the number of chromosomes. This doubles the number of copies of every gene, an effect thought to generate new ‘raw material' upon which natural selection can act. Few studies exist examining the consequences of polyploidy for plant physiological traits. Doubling the number of gene copies may have unknown effects on leaf structure and function. In this study, I compare diploid, tetraploid, and hexaploid species within the genus Helianthus (wild sunflowers). Forty different accessions of wild sunflowers were …
Examining A Fish Community And Its Response To Coastal Restoration In A Dynamic Coastal Estuary, Richard Mahoney
Examining A Fish Community And Its Response To Coastal Restoration In A Dynamic Coastal Estuary, Richard Mahoney
Electronic Theses and Dissertations, 2020-2023
Globally, coastal habitats are experiencing degradation due to the increase of human population growth, development along coastlines, and a constantly changing climate. This threatens the future production of critical ecosystem services such as shoreline stabilization, water filtration, nursery grounds for marine fauna, and many more. To combat these losses, resource managers are actively restoring coastal habitat. Past research suggests restoring habitats has mixed results; numerous factors influence restoration success. This study is among the first to assess the nekton community in the Matanzas River estuary and uses a BACI experimental design to quantify the effect of habitat restoration on the …
Developmental Effects Of Terpenes On Vanessa Cardui At Varying Temperatures, Mari Irving
Developmental Effects Of Terpenes On Vanessa Cardui At Varying Temperatures, Mari Irving
Honors Undergraduate Theses
Secondary metabolites are organic compounds produced by plants that are not essential in growth, development, or reproduction. While they are not strictly necessary to complete the plant life cycle, secondary metabolites play key roles in functions like defense against herbivory and the moderation of symbiotic relationships. Terpenes are a major class of secondary metabolites present in all plants, and this class is hypothesized to have diversified in response to specific plant-herbivore interactions. These complex interactions are further complicated by changes in abiotic conditions experienced seasonally. Herbivory is a major biotic interaction that plays out across broad temporal and spatial scales …
Sensing Symbiosis: Investigating The Symbiotic Magnetic Sensing Hypothesis In Fish Using Genomics, Elizabeth Boggs
Sensing Symbiosis: Investigating The Symbiotic Magnetic Sensing Hypothesis In Fish Using Genomics, Elizabeth Boggs
Honors Undergraduate Theses
The mechanism behind magnetoreception – the ability to sense magnetic fields for orientation and navigation – still remains one of the most difficult questions to answer in sensory biology, with fish being just one of many taxa known to possess this sense. Characterizing a magnetic sense in fish is crucial for understanding how they navigate their environment and can inform on how increasing anthropogenic sources of electromagnetic fields in aquatic environments may affect threatened fish species. This study examined the hypothesis put forth by Natan and Vortman (2017) that magnetotactic bacteria (MTB), bacteria that create their own chains of magnetic …
Masters Of The Manipulator? A Species Description And Comparative Genomics Study Of Two New Hyperparasites Of The Zombie Ant Fungus, Brittany Lebert
Masters Of The Manipulator? A Species Description And Comparative Genomics Study Of Two New Hyperparasites Of The Zombie Ant Fungus, Brittany Lebert
Electronic Theses and Dissertations, 2020-2023
Fungal hyperparasites have been known to indirectly impact ecosystem composition and disease dynamics by modulating the population size and transmission of their parasite host. In the present study we formally describe two new hyperparasite species that infect the fungus Ophiocordyceps camponoti-floridani, which manipulates the behavior of the Florida carpenter ant. Phylogenetic analyses demonstrate that both fungal hyperparasites are new, distinct species. The unique morphology and phylogenetic placement of one of the species even supports its placement in a new genus, which we have named Niveomyces. Our field data suggests that both new species, Polycephalomyces oviedoensis and Niveomyces ophiocordycipitis, negatively impact …
Getting Lost: The Fungal Hijacking Of Ant Foraging Behavior In Space And Time, Thienthanh Trinh
Getting Lost: The Fungal Hijacking Of Ant Foraging Behavior In Space And Time, Thienthanh Trinh
Electronic Theses and Dissertations, 2020-2023
Many parasites have evolved strategies to exploit host behavior such that it benefits parasite transmission. Ophiocordyceps manipulations of carpenter ant behavior represent an evident example. Manipulated ants are coerced to ascend vegetation and clamp down their mandibles in a stereotypical "death-grip" bite. The fungus then kills the ant, sprouts a stalk and releases infective spores. Research has focused on this ultimate manipulation, leaving the subtler behavioral changes pre-biting largely unexplored. Field and transcriptome data found that the host circadian clocks, olfaction, and communication may be disrupted, suggesting that the fungus is affecting ant foraging activity and effectivity. To test these …
The Effects Of Plant Phytochemistry On Parasitoid (Hymenoptera: Braconidae) Niche Breadth, Ryan Ridenbaugh
The Effects Of Plant Phytochemistry On Parasitoid (Hymenoptera: Braconidae) Niche Breadth, Ryan Ridenbaugh
Electronic Theses and Dissertations, 2020-2023
The definition of a species, a fundamental unit of biology, has been debated since its inception. This level of classification is vital to our ability to make meaningful comparisons across all subdisciplines of biology. Cryptic species, those which are indistinguishable from another species using morphology alone, pose a unique problem. This is especially true for biological control programs, where the control of an invasive pest is achieved through the importation of a natural enemy or parasitoid from the pest's native range. The accidental importation of a cryptic species could have long lasting negative environmental effects. Molecular taxonomy provides a solution. …
Molecular And Phenotypic Diversification Of A Cryptic Group Of Terrestrial Frogs From The Southern Andes Of Ecuador, Veronica Urgiles Penafiel
Molecular And Phenotypic Diversification Of A Cryptic Group Of Terrestrial Frogs From The Southern Andes Of Ecuador, Veronica Urgiles Penafiel
Electronic Theses and Dissertations, 2020-2023
The Ecuadorean Andes sustains one of the most remarkable frog diversifications. In this region, nearly one in three known species of amphibians belong to the Pristimantis genus, which contains the majority of the direct-developing terrestrial frog species. Although efforts are ongoing to understand the diversity of Pristimantis, large regions of the ecosystems they occupy remain understudied, and speciation and diversity of this genus remains poorly understood. Within this context, an interesting taxon with many unresolved questions regarding patterns and process of diversification is the Pristimantis orestes species complex which is distributed across the Paramo landscape and montane forests in the …
The Effects Of Sleep Deprivation On Mental Health And Neurological Disorders, Gabriella Victoria Fernandez De Salvo
The Effects Of Sleep Deprivation On Mental Health And Neurological Disorders, Gabriella Victoria Fernandez De Salvo
Honors Undergraduate Theses
Sleep deprivation is defined as an individual sleeping less than 6 hours per night. It is a common behavior amongst individuals who live in industrialized nations.Along with industrialization, its prevalence is also expected to rise with age. Despite this, there has been a shift in recent years with sleep deprivation increasing in the youth, likely related to the increased use of technology during the nighttime. Sleep deprivation and chronic sleep disruption are behaviors commonly observed amongst patients suffering from neurological and psychiatric disorders, like Alzheimer’s disease, Parkinson’s disease, depression, and anxiety. Many of these patients suffer from sleep disorders like …
Investigating The Effects Of Uv Filters In Sunscreen On Human And Environmental Health, Brittany M. Thompson
Investigating The Effects Of Uv Filters In Sunscreen On Human And Environmental Health, Brittany M. Thompson
Honors Undergraduate Theses
Ultraviolet filters are active ingredients in sunscreen that protect us from harmful UV radiation. However, organic UV filters are thought to have adverse effects on the environment and humans. In recent years, fear of harmful impacts of sunscreen has caused a surge of coral reef safe sunscreens to hit the market. These sunscreens, which contain inorganic metal oxides as UV filters, have been accepted as safe for humans and the environment until recently. Metal oxides in reef safe sunscreens may form intermediates in the water that can harm marine life and can absorb through the skin and into the blood, …