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Articles 1 - 30 of 524
Full-Text Articles in Life Sciences
Checking For Ticks: Analyzing The Efficiency Of Different Tick Collection Methods, Peter Briggs, Lawson Trimmell, Javier Monzón
Checking For Ticks: Analyzing The Efficiency Of Different Tick Collection Methods, Peter Briggs, Lawson Trimmell, Javier Monzón
Seaver College Research And Scholarly Achievement Symposium
Ticks are the most important arthropod disease vectors in both North America and Europe. Field collection of wild ticks is vital for research on the ecology of vector-borne diseases. Dragging and trapping are the two most common methods for collecting wild ticks. Dragging involves a researcher pulling a canvas through a field to collect ticks searching for a host, while trapping exploits ticks’ natural attraction to carbon dioxide to lure them onto a canvas where they get caught on tape. Our study aimed to evaluate which of these two methods is more effective. We chose six sites across three states, …
Literature Review Nature-Based Art Therapy Exploring Connections And Relationships, Janell Lopez-Curtis
Literature Review Nature-Based Art Therapy Exploring Connections And Relationships, Janell Lopez-Curtis
Expressive Therapies Capstone Theses
Art therapy is a modality used in clinical psychotherapy. It is supported through both quantitative and qualitative research. Branching out from art therapy is nature-based art therapy. This branch of expressive therapies holds the potential to be beneficial as art therapy due to the interconnected access to the scientific fields of ecology, ecopsychology, art therapy, expressive therapies, and other nature-based therapeutic activities; this includes intersectionality in ecological theories such as ecofeminism and deep ecology as well. Through an exploration of literature, this paper will provide definitions and theory-based support through reviewing clinical psychotherapy, evidence-based practices, and art therapy theories. The …
Nekton Community Responses To Living Shoreline Restorations In Alabama, Shelby Kuck, Christopher Grant, Matheus De Barros, Alexandra Rodriguez, Ronald Baker
Nekton Community Responses To Living Shoreline Restorations In Alabama, Shelby Kuck, Christopher Grant, Matheus De Barros, Alexandra Rodriguez, Ronald Baker
Gulf and Caribbean Research
No abstract provided.
Habitat And Demography Of The Ozark Chinquapin (Castanea Ozarkensis) At Roaring River State Park In Barry County, Missouri, Danielle Evilsizor
Habitat And Demography Of The Ozark Chinquapin (Castanea Ozarkensis) At Roaring River State Park In Barry County, Missouri, Danielle Evilsizor
Electronic Theses & Dissertations
The Ozark chinquapin, Castanea ozarkensis Ashe, is a chestnut tree with a range concentrated in the Interior Highlands of North America. Like other North American members of Castanea, it was reduced from an overstory tree to an understory shrub by the invasive chestnut blight fungus (Cryphonectria parasitica [Murrill] M.E. Barr) during the early 20th century. However, relatively little is known about the habitat of this species or its health and reproductive capability post chestnut blight. Chapter one of this study analyzed the habitat of this species through a random forest species distribution model (SDM) to predict where …
Addressing Water Hyacinth (Pontederia Crassipes) Impacts On Aquatic Biota In Lake Okeechobee, Joseph Salerno
Addressing Water Hyacinth (Pontederia Crassipes) Impacts On Aquatic Biota In Lake Okeechobee, Joseph Salerno
All HCAS Student Capstones, Theses, and Dissertations
The incursion of water hyacinth, Pontederia crassipes in Lake Okeechobee has resulted in management systems to be implemented to reduce the coverage of the invasive macrophyte. Its residence in the Lake Okeechobee ecosystem and the effects it has on organisms in the lake, whether it be positive or harmful is unknown. This study attempted to assess the potential effects that water hyacinth has on aquatic biota in Lake Okeechobee. Biotic data were collected on open water, water hyacinth covered, and native vegetation covered habitats via hook-and-line fishing, electrofishing, baited minnow traps, and the sampling of plant roots over a thirteen-month …
Developing Next-Generation Ecoinformatics Tools For Advancing Global Change Science, Ifeanyi H. Nwigboji
Developing Next-Generation Ecoinformatics Tools For Advancing Global Change Science, Ifeanyi H. Nwigboji
Open Access Theses & Dissertations
Ecosystems are responding to a variety of human-induced, interlinked stressors that have emerged from changing climate, alteration to the global water cycle, sea-level rise, and land use and land cover change, among others. Quantifying these changes and their associated impacts on ecosystems requires a huge amount of long-term data. Due to advances in data collection techniques, such as remote sensing platforms, environmental sensors, synthesized datasets, and various software technologies, the volume and variety of long-term ecological data being collected has tremendously increased. Although there are several complex models and analyses that are increasingly parametrized with data from such sensors, there …
Restoration Strategies For Wetlands In The Arid West: Seeding And Planting Approaches For Lakeshore Ecosystems, Jes Braun
All Graduate Theses and Dissertations, Fall 2023 to Present
Wetlands are widely recognized for their valuable benefits such as providing habitat, improving water quality, and reducing the impacts of flooding. However, wetlands face threats from development, drought, and invasive species. This is particularly apparent in the arid west, where upstream water use and drought make water scarcer and contribute to dramatically changing water levels. Here, I investigated revegetation techniques for lakeshore wetlands, using Utah Lake as a case study. Although recent management efforts have minimized invasive Phragmites cover, the desired plant communities are not returning as quickly as needed, highlighting the need to research restoration techniques. Through my research, …
Species Richness Of Moths In Parks Surrounded By Varying Levels Of Urbanization Around Nashville, Tennessee, Maxwell Stone, Allie Bennett
Species Richness Of Moths In Parks Surrounded By Varying Levels Of Urbanization Around Nashville, Tennessee, Maxwell Stone, Allie Bennett
Science University Research Symposium (SURS)
Moths can act as indicators of environmental wellness due to their pollution sensitivity and the complexity of biodiversity required to support their life cycles. Urbanization can impact the occurrence of moths in protected green spaces. Higher moth species richness was hypothesized to occur in parks surrounded by more rural areas. Three metropolitan parks were chosen in the Nashville area: downtown, within a suburban neighborhood, and in a rural area. Tree canopy cover and degree of impervious surfaces were assessed for each park and surrounding area using iTreeCanopy. Moths were attracted to a white sheet using a mercury vapor bulb, UV …
U.S. History, Science History, Women Scientists, History Of Entomology, Mentoring, Gender In Science, Nature Studies, Ecology, Cornell University, History Of Higher Education, Pat Munday
Interdisciplinary Arts and Sciences Articles
James G. Needham (1868-1958) was a professor of entomology at Cornell University from 1906 to 1936, and an active emeritus for about ten years thereafter. As a professor, mentored many women graduate students at Cornell, a group that included twenty-nine who took doctorates. As a scientist, he was a member of an extensive network that included many more women entomologists. These women were located throughout the United States and Canada. Some had been his students at Cornell, some were colleagues with whom he did fieldwork, and others were young women who, even though students at colleges other than Cornell, worked …
The Deep Ecology Movement
The International Journal of Ecopsychology (IJE)
There are two great streams of environmentalism in the latter half of the twentieth century. One stream is reformist, attempting to control some of the worst of the air and water pollution and inefficient land use practices in industrialized nations and to save a few of the remaining pieces of wildlands as "designated wilderness areas." The other stream supports many of the reformist goals but is revolutionary, seeking a new metaphysics, epistemology, cosmology, and environmental ethics of person/planet. This paper is an intellectual archeology of the second of these streams of environmentalism, which I will call deep ecology.
Monitoring The Effects Of Poultry Waste On Fishes And Macroinvertebrates In The Sabine River, Karley R. Parker
Monitoring The Effects Of Poultry Waste On Fishes And Macroinvertebrates In The Sabine River, Karley R. Parker
Biology Theses
Freshwater is a vital resource that provides life and sustainability for almost all organisms on Earth. It is important to maintain its health and protect it from emerging pollutants that pose a threat to the organisms that use it. Pollution continues to threaten the well-being of the environment’s freshwater sources all around the world that could lead to damaging effects in the future. The Sabine River is a major freshwater resource in the east Texas and western Louisiana areas that provides a habitat for thousands of organisms as well as other domestic uses for humans. In 2019, a waste discharge …
An Ecological Survey Of East Texas Salamanders Across The Camp Tyler Outdoor Field School In Smith County, Texas, Justin C. Hunt
An Ecological Survey Of East Texas Salamanders Across The Camp Tyler Outdoor Field School In Smith County, Texas, Justin C. Hunt
Biology Theses
Amphibians are a unique class of organisms with a very long and storied evolutionary history of survival. Many modern amphibian clades occupy several vital ecological roles within their native freshwater environments. One of these roles, typically includes functioning as an ecological indicator species, whereby the presence of stable and diverse populations of many amphibian species, including salamanders, within a freshwater ecosystem have long been considered ecological indicators of good habitat quality and stable ecosystem health. Similarly, salamanders also function as important members of their local food webs and act as valuable mediators of complex trophic hierarchies to facilitate nutrient cycling …
A Foundational Population Genetics Investigation Of The Sexual Systems Of Solanum (Solanaceae) In The Australian Monsoon Tropics Suggests Dioecious Taxa May Benefit From Increased Genetic Admixture Via Obligate Outcrossing, Jason T. Cantley, Ingrid E. Jordon-Thaden, Morgan Roche, Daniel S. Hayes, Stephamie Kate, Christopher T. Martine
A Foundational Population Genetics Investigation Of The Sexual Systems Of Solanum (Solanaceae) In The Australian Monsoon Tropics Suggests Dioecious Taxa May Benefit From Increased Genetic Admixture Via Obligate Outcrossing, Jason T. Cantley, Ingrid E. Jordon-Thaden, Morgan Roche, Daniel S. Hayes, Stephamie Kate, Christopher T. Martine
Faculty Journal Articles
Solanum section Leptostemonum is an ideal lineage to test the theoretical framework regarding proposed evolutionary benefits of outcrossing sexual systems in comparison to cosexuality. Theoretically, non-cosexual taxa should support more genetic diversity within populations, experience less inbreeding, and have less genetic structure due to a restricted ability to self-fertilize. However, many confounding factors present challenges for a confident inference that inherent differences in sexual systems influence observed genetic patterns among populations. This study provides a foundational baseline of the population genetics of several species of different sexual systems with the aim of generating hypotheses of any factor—including sexual system—that influences …
Mathematics Of Population-Genetics Model For Assessing The Impacts Of Insecticide Resistance And Temperature On Population Abundance Of Malaria Mosquitoes, Jemal Mohammed-Awel
Mathematics Of Population-Genetics Model For Assessing The Impacts Of Insecticide Resistance And Temperature On Population Abundance Of Malaria Mosquitoes, Jemal Mohammed-Awel
Biology and Medicine Through Mathematics Conference
No abstract provided.
Simulation And Latin Hypercube Sampling Of Mixed-Time Models In A Consumer-Resource Relationship, Boluwatife E. Awoyemi, Amanda N. Laubmeier, Richard L. Rebarber
Simulation And Latin Hypercube Sampling Of Mixed-Time Models In A Consumer-Resource Relationship, Boluwatife E. Awoyemi, Amanda N. Laubmeier, Richard L. Rebarber
Biology and Medicine Through Mathematics Conference
No abstract provided.
Eco-Interoception: What Plants, Fungi And Protista Have Taught My Body, Sara Riley Dotterer
Eco-Interoception: What Plants, Fungi And Protista Have Taught My Body, Sara Riley Dotterer
Art Theses and Dissertations
To me, ecology is the relational, full-body awareness that I am made up of and deeply connected to everything around me; and for better or worse, this is reciprocal. I form ecotones, an ecological transitional zone between two ecosystems, with the world around me. I use this ecotonal lens to blur binaries and dissolve boundaries between me and the world “outside my body.” During my Masters of Fine Arts at Southern Methodist University, I have continuously explored and represented the lives of various more-than-human species outside of my body, including plants, fungi and protista through an ecotonal lens. Although these …
Density And Nest Success Of Shrub-Dependent Birds On Formerly Strip-Mined Lands, Luke Headings
Density And Nest Success Of Shrub-Dependent Birds On Formerly Strip-Mined Lands, Luke Headings
Electronic Theses & Dissertations
As bird populations continue to decline across North America, it is important to understand the benefits that disturbed habitats can have for breeding birds. One of the major land disturbances and causes of habitat loss in the United States is surface mining, which often results in altered vegetative communities. The primary goal of this study was to evaluate the relationships between bird populations, habitat, previous and current land use, and densities of invasive plant species on formerly strip-mined land. Due to the proliferation of invasive shrub species in post-mined landscapes, we sought to determine the effects of post-mined habitat features …
The Effects Of Habitat Isolation On Fine-Scale Genetic And Geographic Structure Of Populations Of Two Threatened Endemic Insects In Southern Nevada, Pseudocotalpa Giulianii And Icaricia Shasta Charlestonensis, Kristen Tovar
UNLV Theses, Dissertations, Professional Papers, and Capstones
Assessing the role geographic isolation and ecological specialization have on phylogeographic patterns contributes to our understanding of the evolutionary history of a species and the processes that erode genetic diversity. I used mitochondrial and nuclear genomic sequences to assess whether habitat isolation has shaped the fine-scale patterns of present-day genetic structure and diversity in two threatened insect species endemic to southern Nevada. Pseudocotalpa giulianii (Coleoptera; Scarabaeidae) is a dune obligate scarab beetle endemic to only two small, isolated sand dunes in Nye County, Nevada, with a usable habitat of less than 4.2 km sq that is impacted by on-going degradation. …
Drivers Of White-Tailed Deer (Odocoileus Virginianus) Behavior, Survival, And Population Growth In The Piedmont Of South Carolina, Michael Muthersbaugh
Drivers Of White-Tailed Deer (Odocoileus Virginianus) Behavior, Survival, And Population Growth In The Piedmont Of South Carolina, Michael Muthersbaugh
All Dissertations
Prey species adjust behaviors in response to various stimuli, responding to both top-down and bottom-up pressures. Large herbivores must attempt to avoid predation either through adjusting behaviors or seeking spatial or temporal refugia, which can scale up to influence individual fitness and ultimately population dynamics. Specifically, predation risk has a great potential to influence ungulate populations by impacting behaviors and survival. Our objective was to quantify ungulate behavioral and population response to a regionally important predator through a case study – white-tailed deer (Odocoileus virginianus) responses to coyotes (Canis latrans) on private lands in the Piedmont …
Are Fungal Endophytes Of Fire Adapted Plants Also Fire Adapted?, Alexander C. Dowd
Are Fungal Endophytes Of Fire Adapted Plants Also Fire Adapted?, Alexander C. Dowd
Chancellor’s Honors Program Projects
No abstract provided.
Lesson Plans In Astronomy, Ecology And Biology, Admin Stem For Success
Lesson Plans In Astronomy, Ecology And Biology, Admin Stem For Success
STEM for Success Showcase
This document contains various lesson plan ideas for concepts within the fields of biology, ecology, astronomy, and geology.
Water Pollution And Ecology, Admin Stem For Success, Natalie Wilson
Water Pollution And Ecology, Admin Stem For Success, Natalie Wilson
STEM for Success Showcase
Research activity to teach students about water pollution
Evaluation Of Reproductive Phenology, Space Use, And Ecology Of The Eastern Wild Turkey (Meleagris Gallopavo Silvestris) In West-Central Louisiana, Chad Argabright
Evaluation Of Reproductive Phenology, Space Use, And Ecology Of The Eastern Wild Turkey (Meleagris Gallopavo Silvestris) In West-Central Louisiana, Chad Argabright
LSU Master's Theses
Nest site selection is a driving demographic force behind eastern wild turkey (Meleagris gallopavo silvestris) populations. However, previous research was likely not focused on the actual time of nest site selection, considering that nest site selection is likely only able to occur on the day of the first egg being laid. My objective was to determine if selection for any vegetation characteristics was occurring on the first day of laying. I estimated the path taken from the roost to the nest on the first day of egg laying (i.e., laying path) using GPS data collected from 164 unique …
Population Ecology Of The Diamondback Terrapin At Their Northern Range Limit, Patricia M. Levasseur
Population Ecology Of The Diamondback Terrapin At Their Northern Range Limit, Patricia M. Levasseur
Doctoral Dissertations
This dissertation research focuses on the population ecology of the northern diamondback terrapin (Malaclemys terrapin terrapin) in Wellfleet Bay, MA. The northern diamondback terrapin is a Massachusetts-threatened turtle species restricted to estuarine environments. With a range from Cape Hatteras, North Carolina to Massachusetts, Cape Cod Bay is the northernmost part of the subspecies range. Mass Audubon’s Wellfleet Bay Wildlife Sanctuary has been using capture-mark-recapture (CMR) methods since 1980 marking over 3,000 individuals; however, low detection rates and variable search effort have resulted in unreliable population estimates not suitable for informing conservation practices within the bay. Low sample sizes, …
Testing For Relationships Between Animal Personality Traits, Activity Level And Voracity, And The Underlying Influence Of Body Size In The Dragonfly Predator, Epitheca Canis, Flynn Gorman
Senior Theses and Projects
Animal personality, defined as among-individual variation in behavior, is taxonomically widespread, but its ecological implications remain unclear. While associations between animal personality and ecological traits have been examined, methodological shortcomings, such as lack of repeated measurements, limit the insights these studies provide. Here, I measured the repeatability of activity level and feeding rate behaviors in the nymph stage of the dragonfly predator, Epitheca canis, taking 10 repeated measurements of each trait over a 10-week period. Moreover, I tested for a relationship between among-individual variation in activity level and feeding rate while accounting for the underlying influence of nymph body …
Hide And Seek: An Exploration Of Antipredator And Predator Avoidance Mechanisms In Orthopodomyia Signifera In Response To Predation From Toxorhynchites Rutilus, Nathaniel Dahlberg
Hide And Seek: An Exploration Of Antipredator And Predator Avoidance Mechanisms In Orthopodomyia Signifera In Response To Predation From Toxorhynchites Rutilus, Nathaniel Dahlberg
Master's Theses
There have been many observations of larval Orthopodomyia signifera coexisting with the predator Toxorhynchites rutilus. There are three hypotheses that could explain how Or. signifera resists predation from Tx. rutilus. The first hypothesis states that larvae adapt behavioral changes that limit predation. The second hypothesis states thoracic setae serve as a physical defense that prevents Tx. rutilus from grasping Or. signifera. The third hypothesis states Or. signifera possess a chemical defense indicated by aposematic coloration. To test the first hypothesis larval Or. signifera were exposed to conspecific and heterospecific predation cues and their behavior was observed. Both cues …
Keystone Species Explorer Website, Claire Hutchings
Keystone Species Explorer Website, Claire Hutchings
WWU Honors College Senior Projects
This project is an educational resource (in the form of a website) for elementary and middle school students to explore the ecological concept of keystone species. This site has been designed to provide young students with an accessible, engaging introduction to ecology. The website was created with the design platform Wix. This site is going to be a project in continued development, with entries covering content on several keystone species. The first species covered on the site is the North American beaver. Traditionally-rendered illustrations accompany various pages of content. These pages review the biology and behavior of this animal, its …
Cell Volume As A Determinant Of Virus-Mediated Population Growth In Ciliates, Jace Miller, John Paul Delong Phd
Cell Volume As A Determinant Of Virus-Mediated Population Growth In Ciliates, Jace Miller, John Paul Delong Phd
Honors Theses
Many protists and other small aquatic organisms consume virus particles, a behavior known as virovory. Some species of protists, such as the ciliate Halteria grandinella, can grow and divide using viruses as their sole food source. Other ciliate species have previously been shown to consume large quantities of viral particles, but it is unclear if they are able to support population growth with viruses alone. Because large ciliates have a higher energy demand, we hypothesize that they will be unable to support population growth on a virus-only diet. We fed nine ciliate species a diet of chloroviruses and found …
Growth And Survival Of Amphibians Exposed To Road Salt And Glyphosate-Based Herbicide, Jerica Eaton
Growth And Survival Of Amphibians Exposed To Road Salt And Glyphosate-Based Herbicide, Jerica Eaton
Mahurin Honors College Capstone Experience/Thesis Projects
Amphibian populations are threatened by increasing levels of environmental pollution resulting from human activities. Areas with mixed land use that include agriculture and urban development experience increased contamination from surface herbicide and road deicer application. Upon entering water sources, these chemicals have the capacity to disrupt the natural dynamics of aquatic ecosystems. This study aimed to evaluate the effects of these contaminants on amphibian populations. I used the spotted salamander (Ambystoma maculatum) as a model, rearing larvae from hatching to metamorphosis. I subjected larvae in each of the treatment groups to varying levels of herbicide and salt concentrations. …
Characterization Of The Mycobiome Of Rafflesia Seeds: Their Potential Ecological Roles And Applications In Rafflesia Propagation And Conservation, Feruza Karnitskiy
Characterization Of The Mycobiome Of Rafflesia Seeds: Their Potential Ecological Roles And Applications In Rafflesia Propagation And Conservation, Feruza Karnitskiy
Selected Full-Text Master Theses 2021-
The plant microbiome exerts a profound influence on plant health, growth, and life cycle. This ecosystem comprises diverse microbial communities, such as symbiotic endophytes, mycorrhizal fungi, epiphytes, saprophytes, rhizobia, and pathogens, which inhabit parasitic and non-parasitic plants. Rafflesia speciosa, a holoparasitic plant, is a unique and endangered species that depends on its host Tetrastigma spp. for survival. In this study, fungal metagenomics was conducted to characterize the fungal community—the mycobiome within Rafflesia seeds, and a phylogeny was reconstructed. The ecophysiological characteristics of these fungal genera were also researched in the literature, and their primary ecological trait, whether plant mutualist, saprotroph, …