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Articles 451 - 480 of 538
Full-Text Articles in Environmental Studies
Climate Planning, Energy Sovereignty, And Electric Vehicle Perceptions Among Michigan’S Tribal Nations, Alexis Belle Tater
Climate Planning, Energy Sovereignty, And Electric Vehicle Perceptions Among Michigan’S Tribal Nations, Alexis Belle Tater
Dissertations, Master's Theses and Master's Reports
Climate change will especially impact marginalized communities and communities with less government support for funding climate adaptation actions. The first chapter of this report focuses on climate change responses, specifically Tribal Nations in the state of Michigan. In the current U.S. context, funding for large climate change mitigation and adaptation projects in Tribal Nations can be achieved through federal funding from the CPRG (Climate Pollution Reduction Grant), which requires an established PCAP (Priority Climate Action Plans) to guide decision making in alignment with identified priorities. I discuss the importance of Tribal sovereignty, the potential implications of its inclusion and exclusion …
Partisan Divides In Environmental Spending Attitudes: A Two-Level Hierarchical Analysis, 1973-2022, Jordan Lipner
Partisan Divides In Environmental Spending Attitudes: A Two-Level Hierarchical Analysis, 1973-2022, Jordan Lipner
Honors Undergraduate Theses
Public attitudes toward environmental spending have become increasingly divided along party lines, with sharp shifts over the past five decades. This thesis updates and expands on Johnson and Schwadel’s 2019 study by applying a two-level hierarchical linear model to General Social Survey data updated to include data from 2015-2022, capturing how political affiliation, education, race, and economic context interact with broader political and economic contexts to shape environmental attitudes over time.
The results show that political affiliation remains the strongest and most reactive predictor of environmental spending attitudes. Republican respondents are significantly more likely to oppose environmental spending, especially under …
The San Francisco Bay Area’S Vulnerability To Sea Level Rise: Integrating Community Engagement And Equity Into Sea-Level Rise Adaptation Planning, Isabella Marie Carreon
The San Francisco Bay Area’S Vulnerability To Sea Level Rise: Integrating Community Engagement And Equity Into Sea-Level Rise Adaptation Planning, Isabella Marie Carreon
Pomona Senior Theses
This thesis examines the San Francisco Bay Area’s vulnerability to sea-level rise (SLR), highlighting the importance of equity and community engagement in adaptation planning. The study integrates geospatial data and qualitative community input using a GIS Story Map to identify Points of Interest (POIs)—such as schools, hospitals, and public transportation routes—and assess SLR vulnerabilities across social, economic, geographic, and contamination dimensions. Case studies, such as the Regional Shoreline Adaptation Plan, demonstrate the limitations of large-scale policies in accommodating diverse communities and highlight the effectiveness of community-driven strategies. The thesis also explores innovative approaches to community engagement in educational settings and …
Studi Komparasi Kesiapan Indonesia Menerapkan Carbon Trade 2025, Muhammad Rayhan Ali Ferdiansyah, Hanif Rosyadah, Fikri Fajar Ramadhan
Studi Komparasi Kesiapan Indonesia Menerapkan Carbon Trade 2025, Muhammad Rayhan Ali Ferdiansyah, Hanif Rosyadah, Fikri Fajar Ramadhan
Jurnal Ekonomi dan Pembangunan Indonesia
This study aims to assess Indonesia’s readiness to implement carbon trading in 2025 to achieve net zero emissions by 2060. The research uses a mixed-method approach, combining literature review, multivariate linear regression, and Vector Error Correction Model (VECM). The results indicate that the Human Development Index (HDI) has a negative and significant impact on CO2 emissions in the long term. This impact is greater than the results observed in Singapore and Thailand. With established policies and a demographic bonus in 2045, optimizing human resources is crucial for achieving net zero emissions by 2060.
Integrating Satellite-Based Precipitation Analysis: A Case Study In Norfolk, Virginia, Imiya M. Chathuranika, Dalya Ismael
Integrating Satellite-Based Precipitation Analysis: A Case Study In Norfolk, Virginia, Imiya M. Chathuranika, Dalya Ismael
Engineering Technology Faculty Publications
In many developing cities, the scarcity of adequate observed precipitation stations, due to constraints such as limited space, urban growth, and maintenance challenges, compromises data reliability. This study explores the use of satellite-based precipitation products (SbPPs) as a solution to supplement missing data over the long term, thereby enabling more accurate environmental analysis and decision-making. Specifically, the effectiveness of SbPPs in Norfolk, Virginia, is assessed by comparing them with observed precipitation data from Norfolk International Airport (NIA) using common bias adjustment methods. The study applies three different methods to correct biases caused by sensor limitations and calibration discrepancies and then …
The Solar Power Of Pricing: Does Electricity Pricing Policy Drive Residential Solar Demand?, Talia De Beer
The Solar Power Of Pricing: Does Electricity Pricing Policy Drive Residential Solar Demand?, Talia De Beer
CMC Senior Theses
Solar energy has emerged as a pivotal renewable energy source, experiencing significant growth in the United States over the past two decades. As policymakers continue to develop and refine the best methods to incentivize solar adoption while reflecting true costs and potential equity concerns, this paper seeks to evaluate the impact of changes in solar pricing policies on residential solar installations. Employing a difference-in-differences regression model, this study examines the effects of policy changes on both the system capacity and number of installations of adoption in three Western states that have transitioned away from traditional Net Energy Metering (NEM) policies–Arizona, …
High ‘Steaks’: Does Lone Star Tick-Induced Red Meat Allergy Reduce Cardiovascular Disease-Related Hospitalizations?, Raj Parekh
CMC Senior Theses
In this thesis, I investigate the relationships between Lone Star Tick-induced Alpha-Gal Syndrome (AGS), red meat consumption, and cardiovascular health outcomes within New York State's 62 counties from 2012 to 2021. The analysis examines whether AGS, which forces individuals to reduce red meat consumption, serves as a natural experiment in understanding dietary impacts on cardiovascular disease (CVD). Leveraging panel data, I utilize Fixed Effects (FE) and Two-Stage Least Squares (2SLS) regression frameworks to disentangle the relationships between red meat expenditure, meat prices, Lone Star Tick prevalence, and health outcomes such as CVD, stroke, coronary heart disease, and heart attack hospitalization …
From Fields To Fast Foods: Food Culture, Identity, And Health In Puerto Rico Under The U.S. Empire, Ivanna Morales Mercado
From Fields To Fast Foods: Food Culture, Identity, And Health In Puerto Rico Under The U.S. Empire, Ivanna Morales Mercado
CMC Senior Theses
Operation Bootstrap, launched in 1947, fundamentally altered Puerto Rico’s economy, just as much as its food culture. Prioritizing manufacturing over agriculture led to the collapse of the island’s farming sector, increasing reliance on food imports and leading to a rise in diet-related diseases such as obesity, type 2 diabetes, and cardiovascular issues. This thesis examines the legacies of Operation Bootstrap on Puerto Rico’s food system, health outcomes, and cultural identity by emphasizing the need to value intergenerational knowledge. The oral history research in this study highlights the importance of intergenerational knowledge in reclaiming sustainable agricultural practices and healthy, culturally significant …
Heat And Hardship: Energy Price Increases And Heatstroke Risks In Japan During The Global Energy Crisis, Kenshin Ueoka
Heat And Hardship: Energy Price Increases And Heatstroke Risks In Japan During The Global Energy Crisis, Kenshin Ueoka
CMC Senior Theses
Given the global rise in surface temperatures due to climate change, it is important to understand the interactions governing economic and behavioral responses to household heat adaptation. This study investigated the relationship between energy prices and heatstroke risks in Japan. The analysis revealed that the increase in energy prices during the 2021 global energy crisis was associated with an unexpected decrease in home heatstroke emergency room visits. This result is consistent with the Peltzman effect and moral hazard problem, as reduced economic access to air conditioning may have increased risk perception, heightening heatstroke prevention measures. The ambiguity of this result …
Consolidating The Carbon Trade: Policy Recommendations To Promote Standard Convergence Among The Vcm, Article 6, And Regional Pricing Instruments, Jack M. Barrett
Consolidating The Carbon Trade: Policy Recommendations To Promote Standard Convergence Among The Vcm, Article 6, And Regional Pricing Instruments, Jack M. Barrett
CMC Senior Theses
Efforts to construct robust international carbon markets have repeatedly fallen short of their climate and sustainable development objectives. From the Clean Development Mechanism’s collapse under the weight of non-additional credits to the Voluntary Carbon Market’s recent legitimacy crisis, structural flaws and fragmented standards have undermined offsetting systems for more than two decades. Today, the emergence of the Paris Agreement's Article 6 mechanisms, alongside initiatives like the Integrity Council for the Voluntary Carbon Market (ICVCM), offer a critical but fragile opportunity to rebuild market credibility. The proliferation of diverging standards across Article 6, voluntary markets, and regional carbon pricing instruments risks …
Batteries For Grid Stability: The Impact Of Utility-Scale Battery Installation On Electricity Price Volatility In California, Hannah Vestring
Batteries For Grid Stability: The Impact Of Utility-Scale Battery Installation On Electricity Price Volatility In California, Hannah Vestring
CMC Senior Theses
As renewable energy penetration increases, driven largely by solar, electricity prices have become increasingly volatile due to the intermittency of supply, increasing the need for price stabilizing interventions. This study examines the impact of cumulative additions of utility-scale battery energy storage systems (BESS) capacity on real-time market (RTM) electricity price volatility within the California Independent System Operator (CAISO) between 2020 and 2024, taking a long-term, system-wide perspective on storage deployment. Using an Ordinary Least Squares (OLS) regression framework, the analysis finds that cumulative BESS capacity is significantly associated with reduced price volatility in the benchmark model, with results remaining robust …
Powering Understanding: Cultural Underpinnings Of U.S.-China Competition In The Green Energy Transition, Bryan J. Soh
Powering Understanding: Cultural Underpinnings Of U.S.-China Competition In The Green Energy Transition, Bryan J. Soh
CMC Senior Theses
Rejecting the structural determinism of contemporary IR theories that neglect diverging epistemic predispositions in different states, this paper traces the cultural rationalization of green transition policies in the U.S. and China, thereby paving a way towards a positive understanding of how bilateral climate diplomacy can be better adapted for cooperation, rather than antagonistic competition, on an issue that transcends borders.
The Roots Of Empire And Industry: The Transnational History Of The Soviet Rubber Industry, Alexander Hinnov Craver
The Roots Of Empire And Industry: The Transnational History Of The Soviet Rubber Industry, Alexander Hinnov Craver
Graduate Research Theses & Dissertations
Global rubber shortages and market instability in the early 20th century drove the United States, Soviet Union, and Nazi Germany to collaborate in an overwhelming drive to secure domestically producible sources of rubber, either from plants that could grow outside the tropics, or from synthetic rubber processes. The Soviet Union was an indispensable part of this converging, transnational “quest for rubber.” Russian scientists created the first factories to produce synthetic rubber, and Russian agronomists had discovered a dandelion in Central Asia that yielded latex suitable for manufacture. Consequently, both discoveries were disseminated across the world. Sometimes they were shared: the …
Ai Fetishism And Perverse Climate Disavowal: Why Denying Destructiveness Facilitates Our Ecological Collapse, Alexander M. Stoner, Alexander M. Stoner, Anthony J. Knowles
Ai Fetishism And Perverse Climate Disavowal: Why Denying Destructiveness Facilitates Our Ecological Collapse, Alexander M. Stoner, Alexander M. Stoner, Anthony J. Knowles
Journal Articles
As ecological crises intensify, scholars and activists increasingly question the sustainability of economic growth. Yet, the dominant growth-oriented paradigm remains foundational to advanced capitalist societies and cannot be altered without significant social disruption. The resulting tension between ecological limits and the imperative for continuous growth generates “climate anxiety.” This article advances the concept of perverse climate disavowal: a mode of climate denial that acknowledges climate threats while maintaining faith in the illusion of infinite economic expansion. This disavowal functions as a psychological defense mechanism, enabling individuals and institutions to avoid confronting structural contradictions. The article examines the increasing use of …
Stakeholder Perspectives On The Status And Conservation Management Of Critically Endangered Nassau Grouper In The Bahamas, Krista D. Sherman, Lester Gittens
Stakeholder Perspectives On The Status And Conservation Management Of Critically Endangered Nassau Grouper In The Bahamas, Krista D. Sherman, Lester Gittens
Gulf and Caribbean Research
Ensuring the sustainability of marine resources that provide food, economic security and other critical ecosystem services is a major challenge globally. Assessing stakeholders’ knowledge and perceptions of the status of fisheries and how they should be managed can yield important insights to facilitate the development of management frameworks that are likely to assist with achieving sustainability. As a socioeconomically and culturally important and critically endangered species, evaluating stakeholder perspectives on the status of the Nassau Grouper fishery is critical to help inform policy. Knowledge and perceptions of stakeholders working in The Bahamas were assessed using voluntary participatory approaches, including a …
Indigenous Access And Use On Private Land: A Toolkit For Heart Of The Rockies Land Trust Members, Ian James Craighead
Indigenous Access And Use On Private Land: A Toolkit For Heart Of The Rockies Land Trust Members, Ian James Craighead
Graduate Student Theses, Dissertations, & Professional Papers
No abstract provided.
The Impact Of Ambient Air Quality On Asthma Outcomes In California, Abigail Obour
The Impact Of Ambient Air Quality On Asthma Outcomes In California, Abigail Obour
Graduate Student Theses, Dissertations, & Professional Papers
This study investigates the relationship between ambient air quality and asthma-related health outcomes in California, focusing on emergency department visits and hospitalizations from 2005 to 2022. Despite California’s strict air quality standards, individuals still face significant pollution challenges contributing to poor respiratory health, particularly among vulnerable populations. Therefore, this study looks at how fine particulate matter (PM2.5) affects asthma outcomes using panel data from 37 counties. A fixed effects regression model is employed to control for unobserved heterogeneities that are constant over time but vary across individual counties, ensuring robust estimates of the impact of pollution on health outcomes. This …
“Emergency Relief As Routine”: The Evolution Of Fsa’S Livestock Forage Disaster Program In An Era Of Persistent Drought, Shae L. Olsen
“Emergency Relief As Routine”: The Evolution Of Fsa’S Livestock Forage Disaster Program In An Era Of Persistent Drought, Shae L. Olsen
Graduate Student Theses, Dissertations, & Professional Papers
This thesis examines the historical origins, current limitations, and future of the Farm Service Agency’s (FSA) Livestock Forage Disaster Program (LFP), the primary federal drought disaster relief program for ranchers in the United States. Drawing connections between the Dust Bowl-era Agricultural Adjustment Act (AAA) and LFP, I argue that the AAA, while innovative at the time, prioritized the maintenance of commodity markets over ecological resilience, disproportionately benefiting white, landowning producers. This trend is reflected in LFP today. Through a policy analysis and original qualitative research, including interviews with 23 FSA staff members in nine states, I examine how LFP operates …
Equity And Social Vulnerability In Drought Planning And Response In The Northern Great Plains, Amishi Singh
Equity And Social Vulnerability In Drought Planning And Response In The Northern Great Plains, Amishi Singh
Graduate Student Theses, Dissertations, & Professional Papers
Drought is a natural phenomenon that has long been a part of the climate regime in the Northern Great Plains. However, as climate change intensifies, drought across the region will worsen. This worsening drought will harm vulnerable communities more than their less vulnerable counterparts. Understanding how current policies either reinforce existing systems of marginalization or work to counter them is vital when determining what kind of policy will be needed in times of worsening drought. The first analysis sought to answer the following question: how are states incorporating key concepts of social vulnerability, procedural justice and climate change into their …
Untangling Mining, Past And Present: An Analysis Of Key Informant Interviews On The Prospects Of Renewed Mining Activity Near Cañon City, Colorado, Lauren E. Nelson, Brian C. Chaffin
Untangling Mining, Past And Present: An Analysis Of Key Informant Interviews On The Prospects Of Renewed Mining Activity Near Cañon City, Colorado, Lauren E. Nelson, Brian C. Chaffin
Graduate Student Theses, Dissertations, & Professional Papers
The Rocky Mountain West represents a distinct social-ecological region in a time of transition. As a subregion of the American West, it is defined by aridity, topography, and the physical, cultural, and economic impacts of mining across the landscape. Contemporarily, the region is increasingly shaped by an influx of tourism as well as seasonal and permanent residents who value the landscape for its recreational opportunities and aesthetic values. Most of the communities in the region owe their start to the mining booms of the 19th century, and many are still grappling with contamination left behind by mining. The transition between …
Bibliometric And Visualisation Analysis Of Biomass Burning Research In Thailand (1997-2024), Weerachon Sawangproh, Arika Bridhikitti
Bibliometric And Visualisation Analysis Of Biomass Burning Research In Thailand (1997-2024), Weerachon Sawangproh, Arika Bridhikitti
Applied Environmental Research
Biomass burning is a major driver of air pollution and climate-related impacts in Thailand, but a national-level synthesis of research efforts is lacking. This study conducts a comprehensive bibliometric and qualitative review of 256 peer-reviewed publications from 1997–2024, using Scopus-indexeddata to explore research trends, thematic patterns, and existing gaps. The analysis reveals a strong emphasis on atmospheric chemistry, air quality modeling, and remote sensing, which collectively account for more than 60% of the research landscape.Studies frequently focus on pollutants such as PM2.5,PAHs, carbon monoxide, and heavy metals, with biomass burning identified as a dominant source, especiallyduring the dry season in …
Quantifying Biodiversity In The Absence Of Taxonomic Data: A Study Of Thailand’S Economic Development Zones, Nikorn Mahawan, Wanpen Charoentrakulpeeti
Quantifying Biodiversity In The Absence Of Taxonomic Data: A Study Of Thailand’S Economic Development Zones, Nikorn Mahawan, Wanpen Charoentrakulpeeti
Applied Environmental Research
The biodiversity status measures the ecological capacity of a given area. However, biodiversity assessments in developing countries are limited by the absence of taxonomic data on plants and animals. By developing methods to evaluate biodiversity via alternative data, it is now possible to quantify the ecological carrying capacity in areas where taxonomic data are lacking. The relationship between forest ecosystem health and biodiversity values can be used to estimate biodiversity values by considering the proportions of different land use types that are associated with forest ecosystem abundance. The biodiversity value of the area can be assessed by adding the abundance …
Low-Temperature Catalytic Oxidation Of White Spirit Vapor In Air By Binary Oxides Of Feo-Mnox Supported On Oms-2 Material, Ngo Quoc Nguyen, Pham Duy Quang, Nguyen Ha Nhu, Le Thi Van Anh, Nguyen Thi Thuy, Vo Thanh Hang, Le Van Thang, Nguyen Thi Le Lien, Nguyen Trung Thanh, Nguyen Nhat Huy
Low-Temperature Catalytic Oxidation Of White Spirit Vapor In Air By Binary Oxides Of Feo-Mnox Supported On Oms-2 Material, Ngo Quoc Nguyen, Pham Duy Quang, Nguyen Ha Nhu, Le Thi Van Anh, Nguyen Thi Thuy, Vo Thanh Hang, Le Van Thang, Nguyen Thi Le Lien, Nguyen Trung Thanh, Nguyen Nhat Huy
Applied Environmental Research
In this work, catalysts of iron and manganese oxides supported on OMS-2 were prepared and applied to remove white spirit (WS) in air. Among the fabricated catalysts, the FeO-MnOx/OMS-2 catalyst with a surface Fe+Mn loading of 15% (Fe:Mn = 6:4) exhibited the highest catalytic performance, achieving a high WS removal efficiency of 97.91% at 200 °C. The catalyst retained the cryptomelane-type tunnel structure of OMS-2 and possessed enhanced redox activity due to the synergistic interaction between surface Fe and Mn species. The physico-chemical properties were characterized via BET, EDS, FTIR, XRD, and SEM. The suitable conditions for WS oxidation were …
Spatial And Temporal Dynamics Of Water Use Efficiency And Climate Influence In The Central Highlands Of Vietnam Via Satellite Time Series, Thi Nguyen Quang, Hoang Van Hung
Spatial And Temporal Dynamics Of Water Use Efficiency And Climate Influence In The Central Highlands Of Vietnam Via Satellite Time Series, Thi Nguyen Quang, Hoang Van Hung
Applied Environmental Research
This study investigates the spatial and temporal patterns of water use efficiency (WUE) anomalies across the Central Highlands of Vietnam from 2001–2024 via MODIS time series data, with a focus on seasonal differences and climatic drivers. The results revealed pronounced interannual and spatial variability in the WUE, with significant improvements observed during 2004, 2015, and 2021–2024 and substantial declines during 2005–2008, 2010–2013, and 2016–2017, which coincided with major drought events in the region. Seasonal analysis indicated that WUE was lower during the early dry season and peaked during the postmonsoon months (October–November), reflecting the interplay between water availability and vegetation …
Using A Water Quality Index To Assess The Impacts Of Heavy Metals Contamination For Sustainable Water Management: A Case Study Of The Bang Pakong River, Thailand, Khin Yadana Soe, Pokchat Chutivisut, Wilailuk Niyommaneerat
Using A Water Quality Index To Assess The Impacts Of Heavy Metals Contamination For Sustainable Water Management: A Case Study Of The Bang Pakong River, Thailand, Khin Yadana Soe, Pokchat Chutivisut, Wilailuk Niyommaneerat
Applied Environmental Research
Anthropogenic activities such as improper waste disposal, excessive fertilizer use, and industrial effluents cause heavy metal contamination in water, soil, and the atmosphere. Herein, the water quality index (WQI) was used to characterize heavy metal (i.e., cadmium (Cd), arsenic (As), and mercury (Hg)) contamination in the Bang Pakong River, Thailand. Specifically, water samples were collected during the dry season from four stations along the river from 2012–2022. The heavy metal concentrations in the samples were analyzed via atomic absorption spectrophotometry, and WQI values were calculated on the basis of standard water quality parameters. At the four sampling stations, high As …
Halotolerant Biodegradation And Detoxification Of Synthetic Dyes By Marine-Derived Penicillium Oxalicum M6a: Metabolite Profiling And Ecotoxicity Assessment, Ugochukwu Okechukwu Ozojiofor, Mohammed Sani Abdulsalami, Nkechi Eucharia Egbe, Ahmed Ali Haroun, Yakubu Magaji
Halotolerant Biodegradation And Detoxification Of Synthetic Dyes By Marine-Derived Penicillium Oxalicum M6a: Metabolite Profiling And Ecotoxicity Assessment, Ugochukwu Okechukwu Ozojiofor, Mohammed Sani Abdulsalami, Nkechi Eucharia Egbe, Ahmed Ali Haroun, Yakubu Magaji
Applied Environmental Research
The complex aromatic structures of synthetic dyes in contaminated water bodies make them difficult to degrade, posing a serious environmental challenge and representing a significant emerging pollutant that warrants urgent intervention. This study evaluated the biodegradation and detoxification potential of a halotolerant, marine-derived fungal strain, Penicillium oxalicum M6A, isolated from the Nigerian coastline, against Indigo carmine (IC) and Remazol Brilliant Blue R (RBBR). The effects of pH, temperature, salinity, and dye concentration on degradation efficiency, alongside enzymatic activity, were assessed. FTIR and GC‒MS analyses were employed to identify degradation products and predict metabolic pathways, whereas toxicity was evaluated in three …
Blue Carbon Stock Assessment Of The Mangrove Swamp Forest Reserve In Baganga, Davao Oriental, Philippines, Renz Morales Lanaban, Yves Paul M. Montero, Hilario L. Wong, Jr., Marnie Grace I. Sonico
Blue Carbon Stock Assessment Of The Mangrove Swamp Forest Reserve In Baganga, Davao Oriental, Philippines, Renz Morales Lanaban, Yves Paul M. Montero, Hilario L. Wong, Jr., Marnie Grace I. Sonico
Applied Environmental Research
Mangrove ecosystems are vital carbon sinks, yet they are threatened by anthropogenic pressures and natural disturbances, causing significant carbon stock losses. Given the limited data for Baganga, Davao Oriental, this study quantified the aboveground biomass (AGB) and blue carbon stock in the Lucod mangrove swamp forest reserve. We identified mangrove species, measured AGB and carbon content via allometric equations, and compared storage among species. The results indicated that the mangrove forest AGB was within typical ranges for tropical wet regions and the Asia-Pacific region, but its overall carbon content did not reach highly productive ecosystem levels. Nonparametric analysis revealed significant …
Investigating Spatial And Temporal Changes In Vegetation Via Remote Sensing Indicators And Revealing Their Trends In The Central Desert Of Iran, Peyman Akbarzadeh, Shima Nikoo, Mehran Akbarzadeh
Investigating Spatial And Temporal Changes In Vegetation Via Remote Sensing Indicators And Revealing Their Trends In The Central Desert Of Iran, Peyman Akbarzadeh, Shima Nikoo, Mehran Akbarzadeh
Applied Environmental Research
Vegetation changes can significantly affect the conditions and productivity of ecosystems. Consequently, studying vegetation dynamics across various temporal and spatial scales has emerged as a critical environmental concern. The aim of this study was to investigate changes in vegetation cover via vegetation indices, including the normalized difference vegetation index (NDVI), ratio vegetation index (RVI), soil adjusted vegetation index (SAVI), and difference vegetation index (DVI), derived from multitemporal Landsat 5, 7, and 8 satellite images processed via the Google Earth Engine. The study area is located in the Damghan arid and desert watershed, which represents the central desert of Iran. Furthermore, …
Assessment Of Metal Contamination And Potential Health Risk Of Roadside Vegetables Along The Sayre Highway, Province Of Bukidnon, Philippines, John R.N. Labajo, Junesa U. Cristobal, Myrna G. Pabiona
Assessment Of Metal Contamination And Potential Health Risk Of Roadside Vegetables Along The Sayre Highway, Province Of Bukidnon, Philippines, John R.N. Labajo, Junesa U. Cristobal, Myrna G. Pabiona
Applied Environmental Research
This study assessed heavy metal contamination in roadside vegetables (Ipomoea batatas and Moringa oleifera) across five urbanized localities in Bukidnon, Philippines, and evaluated potential human health risks. Metal concentrations (Cd, Cr, Cu, Co, Fe, Mn, and Zn) were analyzed via atomic absorption spectro-photometry and compared against FAO/WHO maximum permissible limits. The results revealed severe contamination, with Mn (575.27–862.17 mg kg-1) and Fe (256.46–706.68 mg kg-1) dominating natural soil mineralogy (Adtuyon series) and anthropogenic inputs. Toxic Cr (16.20–21.93 mg kg-1) exceeded permissible limits by nine and a half times in Quezon. Health risk assessments revealed negligible noncarcinogenic risks (THQ …
Spatial Distribution And Potential Ecological Risk Of Microplastics In Surface Sediments Of The Inner Gulf Of Thailand, Sarayut Suanluang, Pathompong Vibhatabandhu, Sarawut Srithongouthai
Spatial Distribution And Potential Ecological Risk Of Microplastics In Surface Sediments Of The Inner Gulf Of Thailand, Sarayut Suanluang, Pathompong Vibhatabandhu, Sarawut Srithongouthai
Applied Environmental Research
The global surge in plastic usage during the COVID–19 pandemic raised concerns about increased microplastic (MP) contamination in aquatic environments. This study assessed the abundance, characteristics, and ecological risk of MPs in surface sediments of the inner Gulf of Thailand during the post–COVID–19 period (April 2021). The sediment samples were analyzed via density separation, stereomicroscopic examination, and polymer identification via micro–FTIR. The mean MP abundance was 196.07 ± 85.60 pieces kg-1, with concentrations ranging from 73.08 to 351.19 pieces kg-1. PTFE and PP were the dominant polymer types, comprising 50% and 32% of all the MPs, respectively. Fibers (34%) and …