Digital Commons Network^™

Characterizing Fish Communities Using Traditional And Emerging Monitoring Approaches In San Diego County Estuaries, Natalie Katherine De Wet

Theses

Fish communities are essential to estuarine health, playing key roles in food webs, nutrient cycling, and ecosystem functioning. However, the persistence of native fish populations is increasingly threatened by the cumulative impacts of coastal development, pollution, and climate change. Rapid, effective monitoring of species distributions is a priority, enabling timely conservation and management. However, the study of any ecosystem is limited by time, resources, and the consideration that research of a system can damage the ecosystem under study.

This research aimed to characterize fish species richness and evaluate the benefits and limitations of different estuary monitoring approaches. Specifically, this study …

Analisis Potensial Kejadian Luar Biasa Dbd Berdasarkan Kasus Dbd 5 Tahun Terakhir 2019-2024 : Studi Ekologi Di Kota Lubuklinggau Provinsi Sumatera Selatan, Sely Anggraini, Tri Yunis Miko Wahyono, Fitria Fitria, Nadia Putri

Jurnal Epidemiologi Kesehatan Indonesia

Dengue Hemorrhagic Fever (DHF) is an endemic disease in Indonesia, with a high potential for outbreaks, particularly in tropical and densely populated regions such as Lubuklinggau City. This study aimed to assess the outbreak potential of DHF in Lubuklinggau by analyzing the five-year trend of minimum and maximum case numbers (2019–2023) and comparing them with 2024 data using the epidemic threshold approach. A descriptive ecological study design was employed, with all primary health centers (puskesmas) in the city as units of analysis. Data sources included annual DHF surveillance reports from the District Health Office, field observations, demographic data from the …

Lung Cancer Mortality Trends In Brazil: Implications For Health Policy And Resource Allocation, Mariana Oliveira Santos, Rafael Almeida Costa, Camila Ferreira Barbosa

Muthanna Medical Journal

Background: Lung cancer remains a leading cause of cancer mortality in Brazil, with patterns shaped by historical tobacco use, environmental exposures, and disparities in healthcare access. While overall smoking prevalence has declined markedly, the impact on mortality rates varies by sex and region.

Objective: To analyze national trends in lung cancer mortality in Brazil from 1996 to 2023, assess sex- and region-specific patterns, and discuss implications for public health policy and resource allocation.

Methods: This ecological time-trend study used age-standardized mortality rates (ASMR) for lung cancer (ICD-10 codes C33–C34) obtained from the Mortality Information System (SIM/DATASUS) and population data from …

Low Economic Level And The Risk Of Overweight Among Indonesian Junior And Senior High School Students, Ariyanto Nugroho, Purwo Setiyo Nugroho, Amarin Yudhana, Sri Sunarti

Kesmas

Overweight and obesity among Indonesian adolescents have emerged as a pressing public health issue, reflecting global trends. This study examines the relationship between economic status and overweight prevalence among junior and senior high school students in Indonesia, using secondary data from the Global School-based Health Survey (GSHS). This study analyzed data from 9,977 students aged 11–18 years through a cross-sectional design and binary logistic regression, adjusting for dietary habits, physical activity, and sedentary behavior. Overall, 14.7% of students were overweight; the prevalence was notably higher among low-income students (27.4%) compared to high-income groups (14.2%). Students from lower economic backgrounds were …

Government Health Spending And Life Expectancy: Evidence From Cities And Districts In Indonesia, Kurnia Sari, Budi Hidayat, Amal Chalik Sjaaf, Mardiati Nadjib

Kesmas

Life expectancy is widely recognized as a fundamental indicator of population health, and its improvement is often linked to government health spending, particularly in decentralized health systems. This study aimed to investigate the relationship between local government health expenditures and life expectancy in decentralized Indonesia. Data from 492 cities and districts, spanning from 2015 to 2019, were analyzed using a two-way fixed effects regression model to control for time-invariant district characteristics and common temporal shocks. The findings indicated that a 10% increase per capita in government health expenditure was associated with a 0.01% increase in life expectancy. This association was …

Epidemiological-Based Study Of Sars-Cov-2 In Faisalabad, Sana Ullah, Muhammad Waseem Khan, Qurat-Ul- Ain, Khushbu Farva, Niaz Muhammad Khan, Hayat Ullah

Biological Engineering Student Research

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) raced around the world across different populations; there needs to be a consolidated effort to understand the divergence of the epidemiology of SARS-CoV-2. Population-based epidemiological characteristics studies measure the extent of SARS-CoV-2 infection in a country. The current research study was designed to report epidemiological data from Pakistan. For this purpose, 246 SARS-CoV-2-infected patients were included in the study. For SARS-CoV-2 confirmation, viral samples were collected from all the study participants; SARS-CoV-2 infection was confirmed by viral nucleic acid detection using a nucleic acid detection kit. After SARS-CoV-2 confirmation, all the study participants …

Assessment Of Bat Species (Mammalia: Chiroptera) In Canubas Cave, Kibawe, Bukidnon, Philippines, Jurriel Mari D. Alce, Jasmine Rouida M. Abenes, Leo Gabriel Cervantes, Matthew Eli K. Llacer, Von Zhyrus P. Oche, Ian Jay P. Saldo, Jhovel Roy D. Calo

Sinaya: A Philippine Journal for Senior High School Teachers and Students

Bats, flying mammals, are essential to ecosystems, playing vital roles in pollination, seed dispersal, and insect control. Despite their ecological importance, no prior bat research exists for Canubas Cave, Kibawe, Bukidnon. This study aimed to assess the bat species at the site, documenting their morphometric data, diversity and richness indices, and conservation statuses. A purposive sampling design was implemented by setting up mist nets inside and outside the cave. A total of 13 individuals were identified, comprising three species from two families: Rousettus amplexicaudatus and Eonycteris spelaea (family Pteropodidae, fruit bats), and Miniopterus schreibersii (family Miniopteridae, bent-winged bats). Based on …

The Shorthorn: November 20, 1974

The Shorthorn Newspaper Collection: 1970s

No abstract provided.

The Shorthorn: April 6, 1973

The Shorthorn Newspaper Collection: 1970s

No abstract provided.

The Shorthorn: April 4, 1973

The Shorthorn Newspaper Collection: 1970s

No abstract provided.

Spatial And Temporal Epidemiology Of Suicides Among Alaska Native People, Deborah Hull-Jilly

Counseling

Alaska has one of the highest suicide rates among Indigenous populations in the United States. This study used data from the Alaska Violent Death Reporting System (AKVDRS) and applied spatial, temporal, and space-time analyses to identify unusual concentrations—or clusters—of suicide among Alaska Native people. This research identified one low-risk rural cluster and ten high-risk spatial clusters: six in urban boroughs and census areas (BCAs) and four in rural BCAs. Space-time analysis revealed eight clusters, most lasting an average of five years, with one emerging during the final three years of the study period. The study identified notable differences in mental …

Imsa Summer Symposium 2025, Student Inquiry And Research (Sir)

Summer Symposium

For nearly four decades, IMSA has worked to advance the human condition through educational innovation. The Summer Symposium is our annual showcase for the research projects that were conducted in IMSA’s experiential learning programs between May and August. These programs include Student Inquiry and Research (SIR), IN2 Business Internships, and the Student Research and Experiential Learning Opportunity (SRELO) program.

Cover Design

Luke Berryman

Summer Symposium 2025, Student Inquiry And Research (Sir)

IMSAloquium Event Booklets

For nearly four decades, IMSA has worked to advance the human condition through educational innovation. The Summer Symposium is our annual showcase for the research projects that were conducted in IMSA’s experiential learning programs between May and August. These programs include Student Inquiry and Research (SIR), IN2 Business Internships, and the Student Research and Experiential Learning Opportunity (SRELO) program.

A Meta-Analysis Of Historic Drinking Water Emergency Events Reported In News Articles, Victor Yu, Haiying Wang, Weiwei Mo

Faculty Publications

This study seeks to investigate historical drinking water contamination events that reported by news media to find the key determinants of their outcomes, including the duration and economic cost, and to quantitatively describe the characteristics of past contamination events. ProQuest Global Newsstream and Regional Business News were used to identify an initial list of events and supplemented by additional search on specific information including the response actions, economic cost, and more. These events were analyzed using descriptive statistics, correlation analysis, and regression modeling. Smaller community water systems were found to be more frequently impacted by contamination events. Use restrictions, except …

Population Structure And Stock Assessment Of Tilapia Species In Coastal Lagoon, Lake Manzala, Egypt, Mohamed Fetouh, Kariman Shalloof, Attia El-Aiatt, Alaa El-Far, Walid Aly

Blue Economy

This study aimed to estimate the biology and population structure of cichlid species in Lake Manzala, where tilapias are the main catch. Samples were collected from commercial fishing boats in the fishing areas between 2019 and 2021. The length frequency distributions were evaluated using FiSAT II software. The results showed that Oreochromis niloticus was the most dominant species, making up 50% of the tilapia catch. Four age groups were found in O. niloticus and Coptodon zillii, and three in Oreochomis aureus and Sarotherodon galilaeus. Age group II was the most dominant across all species. The von Bertalanffy equation constants (L∞ …

Eco-Emotions And Climate Activism In Adolescents, Julianna Sahoo

Master's Projects and Capstones

Background. Youth are especially vulnerable to climate change, both physically and psychologically. Combatting climate change will require a coordinated, global effort. Understanding the motivations and emotions behind climate activism is essential to coordinate efforts to combat climate change.

Methods. This research uses survey data collected from first and second year undergraduates (n=521) at a private, urban university in California in the Fall of 2022. Youth were surveyed on emotions related to climate change, activism, compassion, eco-anxiety, and well-being.

Results. Experiencing positive emotions had a stronger relationship with environmental activism compared to negative emotions.

Conclusion. Results suggest climate change communications should …

Urban Wildlife In Your Backyard: Community Experiences With Coyotes And Outdoor Cats, Clarissa Emma Cressotti

Dissertations and Theses

Urbanization reshapes ecological processes by fragmenting habitat and altering patterns of human-wildlife interaction, often reducing biodiversity. However, at the household scale, residential yards can either enhance or inhibit ecological connectivity - functioning as informal habitat stepping stones or barriers to wildlife. This thesis examines how residents' environmental attitudes, wildlife experiences, and socio-demographic characteristics influence yard-level behaviors and shape the presence of urban-adapted wildlife species, particularly coyotes and domestic cats, across the Portland, Oregon metropolitan region. A mixed-methods, social-ecological framework guided the analysis, integrating survey data from 244 households with wildlife detections from motion-triggered cameras (Urban Wildlife Information Network, UWIN), citizen …

The Distribution Of Some Soil Arthropods In A Manipulated Ecosystem, James H. Shaddy, James W. Butcher

The Great Lakes Entomologist

[Excerpt] Soil cultivation practices and agricultural utilization affect soil animal populations in various ways. Gisin (1955) and Schalk (1968) concluded that the effect was minimal. Others observed a deleterious effect (Karg, 1956; Sheals, 1956; Strebel, 1957; Aleinikova and Utrobina, 1975; Edwards and Lofty, 1975). However, some soil animals appear to be benefited (Aleinikova and Utrobina, 1975; Edwards and Lofty, 1975). The effects of cultivation and many other factors have been discussed thoroughly in reviews by Christiansen (1964), Burges and Raw (1967), Butcher, et al. (1971), Ghilarov (1975), and Wallwork (1976).

Invertebrate Predators Of Michigan Lepidoptera, M. C. Nielson

The Great Lakes Entomologist

[Excerpt]

For many years this author has been actively collecting Michigan Lepidoptera and generally observing insects in the field. Almost every season some predation of Lepidoptera by insects and their allies is seen. Unfortunately, many early observations went unrecorded in my field notebooks, but since the late 1950's I have made notations of these interesting encounters.

Advancing Rangeland Vegetation Mapping Through Integrated Uav And Satellite Imagery: A Comparative Machine Learning Framework For Fractional Cover Classification, Nishat Shermin

Theses and Dissertations

This study presents a multi-scale remote sensing framework to classify fractional vegetation cover (FVC) across rangelands by integrating UAV multispectral imagery, LiDAR structural data, and multisource satellite inputs. Four machine learning models, ranging from UAV-only to fused UAV-LiDAR-Sentinel models, were developed and evaluated using Random Forest (RF) and Extreme Gradient Boosting (XGBoost) algorithms. The research was conducted at Martin Ranch, Texas, using Uncrewed Ariel Vehicle (UAV)-collected multispectral imagery, LiDAR-derived canopy height, and Sentinel-1/2 indices. Model 2 (UAV + LiDAR) emerged as the optimal model for balancing accuracy, processing time, and compatibility with ecological simulation tools. This model captures both spectral …

The Impact Of The Mcgirt Supreme Court Decision On Federal Water Policy Within Shared Watersheds, Travis Alexander Younce

Doctoral Dissertations and Projects

This dissertation explored the following research question: What are the public policy implications of the McGirt Supreme Court decision on federal water policy and regulations governing shared watersheds between state, tribes, and federal control? Specifically, this study examined the changing freshwater availability within Oklahoma and Montana. Oklahoma is one of the nation’s most diverse water management lands, with over 85% of its water within tribal boundaries. Eleven lakes and reservoirs in central Oklahoma provide water to the increasingly urbanized population. This dissertation aimed to identify integrated regulations regarding water policy and impacts by examining requirements, use, clarity, and climatological data …

Leishmania In Texas: A Contemporary One Health Scoping Review Of Vectors, Reservoirs, And Human Health, Morgan H Jibowu, Richard Chung, Nina L Tang, Sarah Guo, Leigh-Anne Lawton, Brendan J Sullivan, Dawn M Wetzel, Sarah M Gunter

Faculty, Staff and Students Publications

Leishmaniasis, a vector-borne neglected tropical disease, affects over 6.2 million people globally. Case acquisition is increasingly recognized in the United States, and in Texas, most reported cases are locally acquired and speciated to Leishmania mexicana. We conducted a scoping literature review to systematically assess contemporary research on Leishmania in humans, animals, reservoir hosts, or vectors in Texas after 2000. Out of 22 eligible studies, the most prevalent themes were case reports, followed by studies on domestic animals, reservoirs, and vectors, with several studies bridging multiple disciplines. Climate change, urbanization, and habitat encroachment appear to be driving the northward expansion …

Novel Sequential Modeling Framework Improves Phytoplankton Biomass Predictions In Response To Multiple Environmental Stressors, Zhuyin Tong, Jiayu Guo, Yikai Liu, Lizhen Lin, Jixin Chen, Xin Liu, Bangqin Huang, Edward A. Laws, Wupeng Xiao

Faculty Publications

Understanding the impacts of multiple environmental stressors on phytoplankton biomass is crucial for predicting marine ecosystem responses under global climate change. This study employed a sequential modeling framework integrating principal component analysis, generalized additive models, and artificial neural networks to improve predictions of phytoplankton chlorophyll a concentrations in the Taiwan Strait. Analyzing a decadal dataset, we found that a 2°C rise in sea surface temperature and a 0.2 pH decline will each lead to an 11.3% reduction in chlorophyll a biomass, whereas nitrogen enrichment is expected to increase it by only 2.8%. The combined effects of these stressors will result …

The Effect Of An Invasive Species (Lantana Camara) And A Fast-Growing Herb (Acanthus Pubescens) On The Plant And Animal Communities In Kibale National Park, Uganda, Kathleen Bufka

Theses and Dissertations

Fast-growing plant species, like Lantana camara and Acanthus pubescens, could threaten biodiversity in Kibale National Park, Uganda. I surveyed plants and wildlife in areas where these plants were frequently encountered compared to those areas where they are infrequent. I found mixed results based on plant traits and the animals considered. My findings support management efforts on these two species to prevent forest degradation.

Mammal Use Of Crossing Structures On Highways In The Southern Blue Ridge Mountains, Chloe E. Horton

All Theses

Road networks are a major driver of habitat fragmentation and wildlife mortality. Wildlife crossing structures (WCS) are a common mitigation strategy with the goal of maintaining landscape connectivity, reducing wildlife-vehicle collisions, and facilitating safe passage across highways. Most research on WCS prioritize large ungulates or carnivores, leaving potential gaps in our understanding of how diverse mammalian communities interact with these features. We investigated spatial, temporal, and behavioral patterns of small-, medium-, and large-bodied mammals using WCS in the southern Blue Ridge Mountains of North Carolina and Tennessee. Using remote camera data from structures on I-40 and I-26 collected from 2018 …

Impacts And Insights: Assessing The Aftermath Of Yellowstone’S 500-Year Flood In Montana, Melissa Weddell, Kara Grau, Patrick Holland-Stergar, Christina S. Barsky, Lauren K. Mckeague

Institute for Tourism and Recreation Research Publications

Tourism is shaped by many elements, including natural disasters and unexpected events, which can profoundly affect visitor patterns and destination choices. While disasters typically reduce tourist numbers, occasionally they can have a positive influence. The purpose of this report is to document the flood event, analyze its impact, recovery process, and the economic losses to the region, particularly in terms of tourism visitation and revenue to the area and its gateway communities. The project was a coordinated effort among researchers from the University of Montana’s Institute for Tourism and Recreation Research (ITRR), the Department of Public Administration and Policy, and …

A Simple Guide For Describing Soils, 2nd Edition, Angela Stuart-Street, Nicolyn Short Dr, Paul Galloway, Noel R. Schoknecht

Natural resources published reports

Soils are enormously diverse and can be very confusing to understand and talk about. This simple guide for describing soils helps to identify the most important parts of a soil profile and provide an easy way to understand and explain what you see. It gives you a step-by-step guide of what soil properties to describe and how to describe them, along with the tools to make basic soil classifications. The soil descriptors help you to identify the soil type and aid in assigning a simple and standardised name to the soil. While this guide is designed to link with a …

Unified Mathematical Modeling, Analysis And Simulation Of Covid-19 And Ecological Processes, Jacob Derrick

Masters Theses and Doctoral Dissertations

This dissertation is concerned with the modeling, simulation, and analysis of complex population dynamics using compartmental modeling frameworks based on ordinary differential equations (ODEs). First, we propose a mechanistic model to investigate the transmission dynamics of COVID-19, particularly focusing on the emergence and population-level impact of a post-acute sequela referred to as long COVID and vaccination effects. We then move forward with a model that incorporates multiple strains and reinfection dynamics. By fitting these models to epidemiological data from the United States and the United Kingdom, we conduct both mathematical analyses and numerical simulations to better understand the factors driving …

Exploring Factors Influencing Care And Outcome Among Stroke Patients In Tennessee, Omodele Agbejimi

Electronic Theses and Dissertations

Introduction: Stroke is the fifth leading cause of death in Tennessee. Socioeconomic variables influence the delivery of stroke treatment and its outcomes. Despite advances in acute stroke care, the burden of stroke keeps increasing. This study aimed to explore literature on factors contributing to stroke care and outcomes in the U.S., assess the determinants of stroke patients’ outcomes, and examine the geographical disparities in stroke hospitalization and stroke death rate and their association with stroke care accessibility in Tennessee.

Methods: A scoping review was conducted using socio-ecological models to explore literature on factors contributing to stroke care and outcomes. A …

Forgotten Landscapes: Using Original Land Surveys To Understand The Historic Distribution Of Cane Brakes In Wayne County, Ms, Chad Mackness

Master's Theses

This study investigates the historical presence and ecological significance of Arundinaria gigantea (giant cane) in 1810, Wayne County, Mississippi, using original survey documents. These records provide rare quantitative insights into the distribution of cane brakes, revealing that A. gigantea possibly represented up to 44% of the surveyed landscape, likely second only to Pinus palustris (longleaf pine).

This research involved digitizing historical surveyors' notes, transcribing them into a structured format, and extracting spatial data for GIS analysis. The methodology developed for this research can be used to ensure the preservation and usability of these historical documents for future research. …