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Ecology

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Articles 1 - 30 of 162

Full-Text Articles in Terrestrial and Aquatic Ecology

Distribution, Habitat, And Fish Assemblages Associated With The Rocky Shriner In Arkansas, Savannah L. Wise May 2026

Distribution, Habitat, And Fish Assemblages Associated With The Rocky Shriner In Arkansas, Savannah L. Wise

ATU Theses and Dissertations 2021 - Present

The Rocky Shiner (Notropis suttkusi) is a minnow species endemic to the Red River and its tributaries in southern Arkansas and Oklahoma. This species is petitioned for listing under the Endangered Species Act and is a species of greatest conservation need (SGCN) in Arkansas. However, there is little information for the species’ distribution, habitat use, and ecological niche, especially within the Arkansas portion of its range. Because of this data gap, my study provides an updated description of its distribution and habitat associations using conditional occupancy modeling and explores patterns of species co-occurrence within the community. I sampled …

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Impact Of Pvc Microplastics On The Growth Of Raphanus Sativus, Olivia Fawkes, Alissia D. Fulton, Darlene Panvini Apr 2026

Impact Of Pvc Microplastics On The Growth Of Raphanus Sativus, Olivia Fawkes, Alissia D. Fulton, Darlene Panvini

SPARK Symposium Presentations

Microplastics have emerged as a growing concern due to their increasing prevalence in terrestrial ecosystems. Understanding how microplastics affect plant growth is crucial for the agricultural industry, as crop productivity and soil quality have a direct impact on food security and farm sustainability. This study examined the impact of polyvinyl chloride (PVC) microplastics on the germination and growth rate of Raphanus sativus. Seeds were grown for six weeks in a controlled growth chamber in petri plates and soil pots containing varying concentrations of PVC microplastics (0, 25, 50, 75, 100 mg/L), including untreated PVC and PVC artificially weathered through …

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Hot Cities, Cool Lizards: Do College Campuses Create Urban Oases For Wildlife?, Ethan Heck, Javier Monzon Phd Apr 2026

Hot Cities, Cool Lizards: Do College Campuses Create Urban Oases For Wildlife?, Ethan Heck, Javier Monzon Phd

Seaver College Research And Scholarly Achievement Symposium

Urban wildlife may experience stress due to the Urban Heat Island Effect. On the other hand, urban wildlife may experience relief, especially in arid ecosystems, due to the Urban Oasis Effect. The objective of this study was to test whether college campuses in southern California act as heat islands or oases for wildlife. We analyzed how temperature and water availability of microhabitats relate to the physiology of a widespread and common cold-blooded animal, the Western Fence Lizard (Sceloporus occidentalis). We logged environmental conditions in lizard hotspots at 11 university campuses across southern California and measured the hydration of lizards at …

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Aquatic Interrelations In Malika Mokeddem’S Novel N’Zid (2001), Laura C. Klein Feb 2026

Aquatic Interrelations In Malika Mokeddem’S Novel N’Zid (2001), Laura C. Klein

Green Humanities: A Journal of Ecological Thought in Literature, Philosophy & the Arts

This article offers an ecological analysis of Malika Mokeddem's novel N'Zid (2001), moving beyond postcolonial and anthropocentric interpretations. It centers on the protagonist Nora's individuation, arguing this process is intrinsically linked to her evolving relationship with the aquatic environment from which she emerges. The article aims to situate N'Zid within an ecological perspective, particularly relevant in the Anthropocene, an era compelling a reassessment of humanity's place. Echoing Bruno Latour, addressing inter-relationality is essential as the stable physical framework of the Moderns becomes unstable. This view necessitates rethinking environmental issues and encourages a scientific interpretation of the novel, drawing on neurosciences, …

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Relationship Between Ratio Of Hybrid Sunfish To Their Parent Species And Latitude, Maxwell Kattner Jan 2026

Relationship Between Ratio Of Hybrid Sunfish To Their Parent Species And Latitude, Maxwell Kattner

Journal of Earth and Life Science

Hybrid sunfish of the Lepomis genus make up a generally small but notable portion of the population of sunfish in Minnesota lakes. Hybrid sunfish play a significant role in freshwater ecosystems across the United States. They are both morphologically and behaviorally distinct in some ways and similar in other ways to their parent species, causing them to both fill and compete with their parent species for niches occupied by multiple Lepomis species. Despite this, the ratio of hybrid sunfish to their parent species has never been properly explored. This study observed if the ratio of hybrid sunfish to their parent …

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Parasite Party: Investigating Ecological Drivers Of Trematode Parasite Prevalence Across The Isles Of Shoals, Aimee D. Bousquet, April Blakeslee, Amy Fowler, David Buck Jan 2026

Parasite Party: Investigating Ecological Drivers Of Trematode Parasite Prevalence Across The Isles Of Shoals, Aimee D. Bousquet, April Blakeslee, Amy Fowler, David Buck

UNH URC Open (2026 and after)

Parasite Party: Investigating Ecological Drivers of Trematode Parasite Prevalence Across the Isles of Shoals

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The Inherent Values Of Observation And Description: A Case Study In The Spiny Solanums Of Australia, Christopher T. Martine Sep 2025

The Inherent Values Of Observation And Description: A Case Study In The Spiny Solanums Of Australia, Christopher T. Martine

Faculty Journal Articles

The basic exploratory effort of doing descriptive biology is an avenue by which we can deepen our knowledge about taxa and the natural phenomena that drive their diversification. As Conniff (2011) wrote in The species seekers, “we still live in the great age of discovery”, and much like that historically recognized period of the eighteenth and nineteenth centuries there remains today a distinct need for the sort of work that might have been attributable to the naturalists of that time. The careful observation of how organisms go about their lives, including how they interact with one another …

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Impact Of Unconventional Gas Extraction On Tributaries Of Tenmile Creek, Greene County, Pennsylvania: A 12-Year Perspective, Christian L. Beall May 2025

Impact Of Unconventional Gas Extraction On Tributaries Of Tenmile Creek, Greene County, Pennsylvania: A 12-Year Perspective, Christian L. Beall

Electronic Theses and Dissertations

Much of southwestern Pennsylvania has been central to a rapid increase in development for unconventional natural gas extraction in the past two decades. The continued monitoring of streams over their lifetime as extraction sites is pivotal to understanding the effects of fracking on local waterways and their ability to provide for wildlife and human use. Here, using multiple indices of biotic integrity (IBI), I perform analyses of fish and macroinvertebrate communities as well as water chemistry on two streams, Bates Fork (with shale wells) and Fonner Run (without), as part of a follow-up to work performed there from 2010-2012. Fish …

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A Population Study Of The Freshwater Turtles Of The Recently Expanded Lake Hydaway In Campbell County, Virginia, Joshua Sorenson Apr 2025

A Population Study Of The Freshwater Turtles Of The Recently Expanded Lake Hydaway In Campbell County, Virginia, Joshua Sorenson

Senior Honors Theses

Freshwater turtles are an important part of the ecological systems in central Virginia. At the recently expanded Lake Hydaway, there are several turtle species for which their population characteristics were unknown, especially the prolific Eastern Painted Turtle (Chrysemys picta picta) and Red-bellied Cooter (Pseudemys rubriventris). For five weeks, the lake was surveyed for turtles using hoop nets, and the turtles were marked and measured. Population characteristics such as carapace length and sex ratio for the Eastern Painted Turtle and Red-bellied Cooter were calculated, as well as population estimates for those two species. The Red-eared Slider ( …

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Designing An Optimal Thermal Preference Arena For Southern Cricket Frog (Acris Gryllus) Juveniles, Eleanor E. Briggs, David M. Phillips Jr. Apr 2025

Designing An Optimal Thermal Preference Arena For Southern Cricket Frog (Acris Gryllus) Juveniles, Eleanor E. Briggs, David M. Phillips Jr.

Honors Theses

Climate change has been altering ecosystems across the world at a substantial rate, disrupting the delicate ecophysiological relationships between ecosystems and the organisms that live in them. Ectotherms, such as amphibians, rely on external temperatures to behaviorally thermoregulate, making it especially imperative to study their thermal biology. Thermal preference, which assesses the environmental temperature an organism would seek out in the absence of external stimuli, provides valuable information about an amphibian’s thermal biology and can be used to predict the effects of climate change on a species or population. A commonly used method to measure thermal preference is an arena …

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Climate Influence On Both Spatial And Temporal Patterns Of Rocky Intertidal Community Structure In San Diego, California, Emily Jenkins Jan 2025

Climate Influence On Both Spatial And Temporal Patterns Of Rocky Intertidal Community Structure In San Diego, California, Emily Jenkins

Theses

The rocky intertidal ecosystem, the coastal area between high and low tides, serves as a critical buffer between land and sea. This ecosystem supports a diverse array of species and provides rich opportunities for exploration and education. With the influence of climate change, this ecosystem faces significant shifts in species distribution, resilience and recovery from environmental disturbances, as well as habitat loss (Jackson & McIlvenny 2011; Jueterbock et al. 2013; Menge & Gravem 2022; Rilov et al. 2021; Sagarin & Barry 1999). Between 2014-2016, climate anomalies El Niño (ENSO) and the Pacific Decadal Oscillation (PDO) combined to create a period …

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Acoustic Monitoring Of Oak Toads (Anaxyrus Quercicus), A Longleaf Pine (Pinus Palustris) Ecosystem Endemic Amphibian, Alex Ward Foote Jan 2025

Acoustic Monitoring Of Oak Toads (Anaxyrus Quercicus), A Longleaf Pine (Pinus Palustris) Ecosystem Endemic Amphibian, Alex Ward Foote

Theses, Dissertations and Capstones

The Longleaf pine ecosystem is one of the most endangered ecosystems in the world with only 3% remaining. Many endemic species to the longleaf pine ecosystem are also in decline and suffer from habitat loss resulting from fire exclusion, urbanization, agriculture, and industrial silviculture. Oak Toads (Anaxyrus quercicus) are a longleaf pine ecosystem obligate; the species is experiencing declines across its range and only has protections in Virginia and North Carolina. We used data from an array of Automated Recoding Units across four years (2013, 2014, 2015, 2019) at three state-owned wildlife management areas to capture audio files …

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Effects Of In-Stream Large Woody Debris Management On Riparian Salamander Population Dynamics, Sydney Hermann Jan 2025

Effects Of In-Stream Large Woody Debris Management On Riparian Salamander Population Dynamics, Sydney Hermann

Theses, Dissertations and Capstones

The addition of large woody debris (LWD) into streams is an increasingly common habitat restoration method used to support brook trout populations and other sensitive freshwater species. Wood jams create localized reductions of water velocity, increase organic matter retention, intensify overbank flows, and promote habitat heterogeneity. These changes enhance interaction between the floodplain and the stream which can influence forest habitat variables such as leaf litter, soil pH, moisture, and invertebrate abundance. Salamander demographics reflect the stability of these forest habitat variables, and population declines can be indicative of environmental disturbance, stress, or change. Evaluating how this trout-targeted management effects …

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How Individual Traits Predict Distribution Patterns And Community Convergence, Zachary K. Lange Jan 2025

How Individual Traits Predict Distribution Patterns And Community Convergence, Zachary K. Lange

Biology Dissertations - Archive

One of the fundamental questions in biology is whether natural conditions lead species and communities toward predictable outcomes. Answering this question requires understanding how traits of individual organisms are connected to species- and community-level patterns. In Chapter 2, I examined how thermal physiology and environmental temperatures interact to determine the distribution patterns of Anolis lizards on the Greater Antilles. I combined lab-measured thermal traits (critical thermal minimum: CTmin, critical thermal maximum: CTmax, thermal preference: Tpref) with occurrence and abundance data from 21 species of Anolis lizards collected from extensive mark-resight surveys of communities across …

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Distribution And Ecology Of The Cedar Keys Mole Skink (Plestiodon Egregius Insularis), Kevin M. Enge, Louis A. Somma, Paul E. Moler, Travis M. Thomas, Matthew T. Fedler, John M. Matter, Dennis C. Haney Jan 2025

Distribution And Ecology Of The Cedar Keys Mole Skink (Plestiodon Egregius Insularis), Kevin M. Enge, Louis A. Somma, Paul E. Moler, Travis M. Thomas, Matthew T. Fedler, John M. Matter, Dennis C. Haney

Papers in Herpetology

We conducted surveys for the Cedar Keys Mole Skink, Plestiodon egregius insularis (Mount), during 1989– 1999 and 2015–2024, examined museum vouchers, and compiled personal observations from others to determine the status and distribution of this subspecies, which has the smallest geographic distribution of the five subspecies and is being considered for federal listing. We observed Cedar Keys Mole Skinks on Airstrip Island, Atsena Otie, Cedar Point, Deer Island, North Key, Scale Key, Seahorse Key, Snake Key, and possibly Dog Island. We have anecdotal reports of Mole Skinks on Way Key, which contains the most potential habitat and is the main …

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Of Geese And Grass: Investigating Impacts Of Brant Grazing On Eeelgrass, Dakota L. Osborne Sep 2024

Of Geese And Grass: Investigating Impacts Of Brant Grazing On Eeelgrass, Dakota L. Osborne

Master's Theses

Grazing pressure is important in structuring plant communities, particularly in aquatic environments. Eelgrass (Zostera marina), a keystone species in estuaries across North America, is experiencing widespread population declines. As a keystone species, eelgrass provides numerous important functions, including: 1) water filtration, 2) sediment stabilization, 3) providing refuge and nursery habitat for numerous species, and 4) carbon sequestration. Benefits which could be lost if eelgrass beds continue to diminish. California has experienced some of the greatest eelgrass declines, and Morro Bay, CA experienced a 96% decrease in eelgrass from 2007 to 2017. Most studies to date have examined bottom-up …

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Unraveling Wetland Ecology: The Effect Of Abiotic Heterogeneity And Habitat Size On Wetland Plant Diversity In The Piedmont, Gregory T. Gilmore Aug 2024

Unraveling Wetland Ecology: The Effect Of Abiotic Heterogeneity And Habitat Size On Wetland Plant Diversity In The Piedmont, Gregory T. Gilmore

All Theses

Ecosystems around the world are seeing an unprecedented decline in biodiversity. However, to better prevent this decline we cannot only understand the drivers of biodiversity loss, but also the factors that support diversity. Traditional ecological hypotheses such as the Habitat Heterogeneity Hypothesis (HHH) and the Theory of Island Biogeography (TIB) have provided frameworks for understanding biodiversity drivers. However, recent research suggests a more nuanced relationship between heterogeneity, habitat size, and diversity than previously thought. This study looks to bridge existing research gaps by examining the ecologically and conservational important habitat of wetlands. Specifically, the study focuses on the plant diversity …

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Microplastic Accumulation In The Marsh Periwinkle (Littoraria Irrorata), Sarah Keaton, Hannah Lukhard, Eli Windy, Manar Hasan Jul 2024

Microplastic Accumulation In The Marsh Periwinkle (Littoraria Irrorata), Sarah Keaton, Hannah Lukhard, Eli Windy, Manar Hasan

DePaul Discoveries

Contamination of oceans by microplastics (mm) currently poses a major threat to aquatic and terrestrial ecosystems worldwide. Recent attention towards this issue has raised questions about the extent to which microplastics have accumulated in the environment, and has led to an increase in studies on the effects of microplastics in various organisms. However, levels of contamination in protected natural areas are still largely unexplored, yet can offer an important empirical perspective on the issue. In addition, little is known about the potential effects of microplastics on behavior in the field. This research was conducted within the protected ACE Basin National …

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From Pixels To Plants: Remote Sensing Of California Invasive Plants, Kenneth Rangel May 2024

From Pixels To Plants: Remote Sensing Of California Invasive Plants, Kenneth Rangel

Master's Projects and Capstones

Invasive plants cause significant impacts to ecosystems, the economy, and human health. California has experienced significant plant invasions and is well suited to future invasion because of its Mediterranean climate and human disturbance. Eradication or control of invasive plant species requires a detailed understanding of their spatial distribution, which typically involves on the ground surveys that can be expensive or inconsistent. Remote sensing offers a potential alternative or supplement to in-person invasive plant mapping. This study performed a comparative analysis of 41 remote sensing studies that mapped the distribution of California invasive plants. I found that while high spectral resolution …

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Ecological Dynamics Of Cenozoic North American Mammals, Alexandria Brandis Shupinski May 2024

Ecological Dynamics Of Cenozoic North American Mammals, Alexandria Brandis Shupinski

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

Understanding how community structure is affected by various ecological, climatic, and environmental changes is a long-standing goal in ecology. However, disentangling human impacts from these other variables is difficult when using short modern timescales and anthropogenically altered communities. The fossil record provides a means to investigate community structure dynamics across critical intervals, excluding humans as a variable. Here, in three studies, I assess changes in North American mammal paleocommunity structure across the last 66 million years (Ma) at multiple temporal and spatial scales. In Chapter 1, I identify changes in mammal functional diversity (FD) locally and continentally, using three independent …

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Rescape: Transforming Coral-Reefscape Images For Quantitative Analysis, Zachary Ferris, Eraldo Ribeiro, Tomofumi Nagata, Robert Van Woesik Apr 2024

Rescape: Transforming Coral-Reefscape Images For Quantitative Analysis, Zachary Ferris, Eraldo Ribeiro, Tomofumi Nagata, Robert Van Woesik

Ocean Engineering and Marine Sciences Faculty Publications

Ever since the first image of a coral reef was captured in 1885, people worldwide have been accumulating images of coral reefscapes that document the historic conditions of reefs. However, these innumerable reefscape images suffer from perspective distortion, which reduces the apparent size of distant taxa, rendering the images unusable for quantitative analysis of reef conditions. Here we solve this century-long distortion problem by developing a novel computer-vision algorithm, ReScape, which removes the perspective distortion from reefscape images by transforming them into top-down views, making them usable for quantitative analysis of reef conditions. In doing so, we demonstrate the …

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Environmental Biology Masters Capstone, Antonio Gonzalez-Pita Jan 2024

Environmental Biology Masters Capstone, Antonio Gonzalez-Pita

Regis University Student Publications (comprehensive collection)

Human wildlife interactions (HWI) pose a complex challenge for wildlife managers. Human encroachment into wildlife habitat and the growing number of outdoor recreationists are increasing the frequency of contact and conflict, especially in regions such as the Front Range of Colorado. Geographic information systems (GIS), which use a combination of remote sensing and environmental survey data, allow for predictive spatial analyses of where human wildlife interactions are likely to occur. I used publicly reported observations of moose to create spatial predictive maps in a species distribution model framework. Slope and elevation were shown to be the strongest predictors of HWI, …

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Impacts Of Anthropogenic Sedimentation On Shell-Bed Habitats In Lake Tanganyika, Africa, Michael Soreghan, Andrew Cohen, Michael M. Mcglue, Kevin M. Yeager, Emily Ryan, Alison Johns, Ishmael Kimirei Jan 2024

Impacts Of Anthropogenic Sedimentation On Shell-Bed Habitats In Lake Tanganyika, Africa, Michael Soreghan, Andrew Cohen, Michael M. Mcglue, Kevin M. Yeager, Emily Ryan, Alison Johns, Ishmael Kimirei

Earth and Environmental Sciences Faculty Publications

Lake Tanganyika, in central Africa, contains a diverse and endemic fauna under threat from global climate change, overfishing, and nearshore sediment pollution. Previous studies of sediment pollution focused justifiably on impacts along rocky shorelines where diversity is high, but Lake Tanganyika also contains widespread shelly accumulations (shell beds) unprecedented in the modern East African lakes, but where impacts are less con- strained. Here we integrate multiple datasets from three sites along the Tanzanian shoreline to explore how variation in sedimentation rates and sediment quality impacts shell-bed substrate and diversity and abundance of ostracodes and sponges across sites that exhibit varying …

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Interdisciplinary Learning: How Different Ways Of Thinking Can Fuel Passion And Expand Understanding., Allison Amy Peschek Jan 2024

Interdisciplinary Learning: How Different Ways Of Thinking Can Fuel Passion And Expand Understanding., Allison Amy Peschek

Undergraduate Theses, Professional Papers, and Capstone Artifacts

This Capstone project was created to show the profound experience resulting from an extended range of interdisciplinary learning, and how different methods, when paired together, can enhance a learning experience. This was a personal project of exploration into those different angles, and primarily focused on avenues of logical and creating learning, respectively. These methods have been implemented by this author often in the past, but this capstone will explore this concept further, as there is a lot of potential in combining these different methods and biases in learning, to both further passion and understanding as a learner, but to also …

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Are Elaeagnus Umbellata Invasions Limited By Microbial Interactions?, Cody Anderson Leverette Jan 2024

Are Elaeagnus Umbellata Invasions Limited By Microbial Interactions?, Cody Anderson Leverette

Masters Theses

Mutualistic interactions with soil microbes are a key component of plant invasions. Mutualists such as ectomycorrhizal fungi and Rhizobia bacteria often limit invasive plant establishment and performance, but the role of nitrogen-fixing Frankia bacteria in invasions remains largely unexplored. In this study, I quantified the net effects of positive and negative plant-soil feedbacks, including Frankia nodulation, on invasive Elaeagnus umbellata (autumn olive; hereafter AO) seedling performance and traits at varying distances from focal shrubs using live soil and sterilized soil. The expectation was that seedling performance would decrease with further distance from shrubs as Frankia abundance decreased. Contrary to expectations, …

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Addressing Water Hyacinth (Pontederia Crassipes) Impacts On Aquatic Biota In Lake Okeechobee, Joseph Salerno Dec 2023

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 …

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Monitoring The Effects Of Poultry Waste On Fishes And Macroinvertebrates In The Sabine River, Karley R. Parker Jul 2023

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 …

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An Ecological Survey Of East Texas Salamanders Across The Camp Tyler Outdoor Field School In Smith County, Texas, Justin C. Hunt Jul 2023

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 …

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Density And Nest Success Of Shrub-Dependent Birds On Formerly Strip-Mined Lands, Luke Headings May 2023

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 …

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Growth, Mortality, And Movement Of Endemic Bartram's Bass And Invasive Alabama Bass In Upper Savannah River Basin Tributaries, Tyler Zumwalt May 2023

Growth, Mortality, And Movement Of Endemic Bartram's Bass And Invasive Alabama Bass In Upper Savannah River Basin Tributaries, Tyler Zumwalt

All Theses

Bartram’s Bass are an endemic to the Upper Savannah River basin in North Carolina, South Carolina, and Georgia. Bartram’s Bass are facing many risks, primary among them being hybridization with nonnative Alabama Bass. More recently, nonnative Alabama Bass and their hybrid congeners have been observed moving from reservoirs into tributaries where the remaining Bartram’s Bass populations exist. Thus, for Chapter 1 we sought to better understand the threat of nonnative gene spreading in tributary systems. To do this, we 1) quantified the movement of pure Alabama Bass, Bartram’s Bass, and their hybrids, 2) assessed correlations between movement and abiotic variables, …

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