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The Spirulina Strategy, Singapore Management University

Perspectives@SMU

This is an adapted version of the SMU Case, “Navigating an Eternal Ocean: EnerGaia’s Emergent Strategy in the Market for Spirulina" written by Research Fellow Ryan Merrill and Assistant Professor Simon Schillebeeckx. To see the full case, please click on the following link: https://cmp.smu.edu.sg/case/3986

EnerGaia began life trying to address nutrition issues in the developing world. The prospect of profit is testing its founder to balance both or choose one over the other

Lotka-Volteraimpulsive Model Control Or How Not To Fish, Vladyslav Bivziuk

International Programs

Human intervention in nature often destroys the equilibrium that has been established in it. It is very important to find controls that would not destroy the stability of the natural equilibrium in the ecosystem. The impulsive systems theory allows us to investigate such effects on a biological system with a simpler example that do not destroy its equilibrium.

Infrequent Occurrence Of Peach Skin Streaking And The Role Of Rainwater Attributes On Symptom Development, Linus Schmitz

All Theses

Streaks lacking pigmentation in the skin of red blush cultivars of peaches have impacted many East Coast production areas. The underlying cause of streaking is unclear. Some evidence suggests that streaking may be caused by reactive agents in rainwater. Peach skin streaking was monitored over two consecutive years at a commercial farm with a history of streaking located near Ridge Spring, South Carolina. Six cultivars (two early season, two mid-season, and two late season cultivars) were evaluated each in two locations (LocA and LocB). Among those 12 experimental block cultivars, streaking occurred only in 2017 in cv. Scarletprince of LocA …

Influence Of Competitive Sorption On Cesium Transport In Savannah River Site Soil, Matthew Kyle Seigler

All Theses

Several long-lived radioisotopes of cesium, such as 135Cs and 137Cs are produced as byproducts of the fuel and targets of production reactors at SRS, and the radioactive isotope of particular interest for hydrogeologic and geochemical studies is 137Cs due to a 30 year half-life, high fission yield, high solubility, high transferability, wide distribution, and rapid assimilation by living organisms. Due to the environmental releases and adverse health effects from Cs exposure, it is important to characterize Cs sorption to soils and sediments, which is a major factor in transport in the environment. Cs mobility is controlled by sorption to geologic …

Including Indigenous Knowledge Systems In Environmental Assessments: Restructuring The Process, Rachel Arsenault, Carrie Bourassa, Sibyl Diver, Deborah Mcgregor, Aaron Witham

Articles & Book Chapters

Indigenous peoples around the world are concerned about the long-term impacts of industrial activities and natural resource extraction projects on their traditional territories. Environmental impact studies, environmental risk assessments (EAs), and risk management protocols are offered as tools that can address some of these concerns. However, these tools are not universally required in jurisdictions, and this Forum intervention considers whether these technical tools might be reshaped to integrate Indigenous communities’ interests, with specific attention to traditional knowledge. Challenges include unrealistic timelines to evaluate proposed projects, community capacity, inadequate understanding of Indigenous communities, and ineffective communicatio, all of which contribute to …

Ohio University Establishes Landscape And Turf Pest Management Plan (August 1, 2019), University Communications And Marketing

OHIO News Articles Archive

No abstract provided.

Long-Term Forest Growth And Decadal Soil Chemistry Change Across The White Mountain National Forest, Olivia L. Fraser

Doctoral Dissertations

Forest ecosystems are subject to a variety of stressors including human land use, air pollution and climate change. A challenge for detecting temporal change, however, is disentangling heterogeneity at multiple spatial scales. Therefore, we need a better understanding of the mechanisms influencing forest growth and soil formation, how to improve existing long-term sample designs, and quantify variability at multiple spatial scales. Identifying the areal extent of bedrock outcrops and shallow soils has important implications in understanding the spatial dynamics of surrounding vegetation, stream chemistry gradients, and soil properties. Manual methods of delineating bedrock outcrops and associated shallow soil are still …

Advancing The Terrestrial Ecological Unit Inventory Within The White Mountain National Forest Using Lidar, Robert Andrew Colter

Doctoral Dissertations

Forest land managers need ecological classification to assess and describe resource conditions, vegetation conditions, outcomes resulting from various management prescription scenarios, and communicate environmental effects of land management planning alternatives. However, there is a need to incorporate more ecological classification into the land management plans. The U.S. Forest Service’s approach, the Terrestrial Ecological Unit Inventory (TEUI), relies heavily on field data collection and verification of map unit delineations that is time-consuming and costly. Traditional mapping methods far exceed the current financial capacity of the U.S. Forest Service. In order to justify new ecological classification mapping approaches, there needs to be …

Dish It Up! The Influence Of Kind Diningtm& Green House Model Food And Food Service Innovations On The Resident Experience In Residential Care Facilities., Mary E. Jensen

Doctoral Dissertations

The purpose of this study is to understand how innovative practices affect the satisfaction elder-care facility residents have with their food-related life. The study looks through the lenses of food and food service activities, related medical care activities, and facility design.

The Older Americans Act of 1965 defined the basic rights of elders in American society. The statement and objectives codified in that Act have provided the outline for eldercare in the community and in residential care facilities ever since. Legislative updates in 2017 more clearly identified “person-centered” care as the ideal in elderly care homes. Research using the diffusion …

Thriving Together: A New Initiative Combining Conservation And Family Planning Needs, Kathryn Lloyd

WellBeing News

The Margaret Pyke Trust launched the Thriving Together campaign, supported by over 150 large and small organizations (including some UN agencies) to build a movement “to change global policy to recognize the importance of removing barriers to family planning as an appropriate cause for conservationists to embrace, for the sake of their missions, for the lives of women and children and for a better world.”

You Don’T Need Lungs To Suffer: Fish Suffering In The Age Of Climate Change With A Call For Regulatory Reform, David N. Cassuto, Amy O'Brien

Elisabeth Haub School of Law Faculty Publications

Fish are sentient — they feel pain and suffer. Yet, while we see increasing interest in protecting birds and mammals in industries such as farming and research (albeit few laws), no such attention has been paid to the suffering of fish in the fishing industry. Consideration of fish welfare including reducing needless suffering should be a component of fisheries management. This article focuses on fisheries management practices, the effects of anthropogenic climate change on fisheries management practices, and the moral implications of fish sentience on the development and amendment of global fishing practices. Part I examines domestic and international fisheries, …

The Impacts Of Terrestrial Invasive Plants On Streams And Natural And Restored Riparian Forests In Northern New England, Chad Frederick Hammer

Master's Theses and Capstones

Non-native invasive species are a major cause of ecosystem degradation and impairment of ecosystem service benefits in the United States. Riparian areas are at high risk for invasion because they are among the most human-disturbed ecosystems in the world. Forested riparian areas provide us with many ecosystem services and are vital to streams and rivers as they increase habitat complexity and available resources for organisms of many trophic levels. In this study, I quantified the impacts of terrestrial invasive plant invasions by Japanese knotweed and woody invasive plant species on riparian forest structure, stream physical habitat, soil structure, and soil …

Divergent Controls On Stream Greenhouse Gas Concentrations Across A Land Use Gradient, Allison Herreid

Master's Theses and Capstones

Inland waters can be significant sources of carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) to the atmosphere. However, considerable uncertainty remains in regional and global estimates of greenhouse gas (GHG) emissions from freshwater ecosystems, particularly streams. Controls on GHG production in fluvial ecosystems, such as water chemistry and sediment characteristics, are also poorly understood. The main objective of this study was to quantify spatial and temporal variability in GHG concentrations in 20 streams across a landscape with considerable variation in land use and land cover. Stream water was consistently supersaturated in CO2, CH4, and N2O, suggesting that small …

The Quarterly Interview: Andrew Battista, Andrew Battista

LOEX Quarterly

No abstract provided.

Apartment Residents' Understanding Of And Satisfaction With Water Savings Devices, David Farmer

Electronic Theses and Dissertations

As the human population increases, the way we use and manage our supply of drinking water becomes even more important. The purpose of this study was to determine residents’ satisfaction level of and performance rating of new water savings devices installed in their apartments. Specifically the investigation focused on ratings of shower heads, kitchen faucet aerators, bath faucet aerators, and fill valve and flapper systems.

This quantitative survey included residents at 4 apartment complexes in Tennessee using a paper questionnaire (N = 626). The participants were grouped by age, ethnicity, gender, and whether or not they had experienced both nonrestrictive …

Environmental Regulation Of Cyanobacteria Aerosols From Low Productivity Lakes, Katharine Lorena Langley

Master's Theses and Capstones

Cyanobacteria produce a range of toxins harmful to both humans and wildlife. Microcystins (MCs) are common and potent cyanotoxins that inhibit protein phosphatases in the liver. Chronic exposures can result in tumor promotion and cancer. Toxicity primarily follows ingestion of MCs, however inhalation may be an important secondary and compounding route of exposure to cyanotoxins. The LD50 of intratracheally applied MC-LR is 50x lower than the oral LD50. While MCs are well documented in water, little is known about cyanobacteria and cyanotoxins in aerosols and the factors that regulate the movement of cells and toxins into the air. To begin …

Optimization Of Biogas Production By Use Of A Microbially Enhanced Inoculum, Anna Doloman

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A renewable energy source, biogas, comprises of methane (80%) and carbon dioxide (15%), and is a great alternative to the conventional fossil-based fuels, such as coal, gas and oil. Biogas is created during anaerobic biological digestion of waste materials, such as landfill material, animal manure, wastewater, algal biomass, industrial organic waste etc. A biogas potential from organic waste in the United States is estimated at about 9 million tons per year and technology allows capture of greenhouse gases, such as methane and carbon dioxide, into a form of a fuel. In the light of global climate change and efforts to …

The Factors Affecting Wind Erosion In Southern Utah, Mehmet Ozturk

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Wind erosion is a global issue and affecting millions of people in drylands by causing environmental issues (acceleration of snow melting), public health concerns (respiratory diseases), and socioeconomic problems (costs of damages and cleaning public properties after dust storms). Disturbances in drylands can be irreversible, thus leading to natural disasters such as the 1930s Dust Bowl. With increasing attention on aeolian studies, many studies have been conducted using ground-based measurements or wind tunnel studies. Ground-based measurements are important for validating model predictions and testing the effect and interactions of different factors known to affect wind erosion. Here, a machine-learning model …

Sand And Pumice Filter Amended With Activated Carbon And Biochar For Phosphorus Retention, James Jihoon Kang, Marissa Davila, Sergio I. Mireles, Jungseok Ho

School of Earth, Environmental, & Marine Sciences Faculty Publications

Phosphorus (P) loss via stormwater runoff is a water quality concern. The objective of this study was to investigate two commercial biochars relative to an activated carbon as an additive to geomedia (sand and pumice) for P removal. The batch adsorption experiment was conducted to assess P sorption of the geomedia and carbon materials while the leaching experiment was conducted in sand and pumice columns amended with carbon materials (5 % by weight). The batch adsorption test revealed that only activated carbon showed an appreciable P adsorption up to 19 %. Tested biochar materials showed no adsorption capacity for P …

International Ocean Discovery Program Expedition 382 Preliminary Report: Iceberg Alley And Subantarctic Ice And Ocean Dynamics, Michael E. Weber, Maureen E. Raymo, Trevor Williams, Linda Armbrecht, Ian Bailey, Stefanie Brachfeld, Zhiheng Du, Gerson Fauth, Marga Garcia, Anna Glüder, Michelle Guitard, Marcus Gutjahr, Sidney Hemming, Ivan Hernandez-Almeid, Frida S. Hoem, Ji Hwan Hwang, Mutsumi Iizuka, Yuji Kato, Bridget K. Lee, Yasmina M. Martos, Suzanne O'Connell, Victoria L. Peck, Lara F. Perez, Brendan Reilly, Thomas A. Ronge, Osamu Seki, Lisa Tauxe, Shubham Tripathi, Jonathan Warnock, Xufeng Zheng, Fabricio G. Cardillo, Anthony D. Mello

Department of Earth and Environmental Studies Faculty Scholarship and Creative Works

International Ocean Discovery Program (IODP) Expedition 382, Iceberg Alley and Subantarctic Ice and Ocean Dynamics, investigated the long-term climate history of Antarctica, seeking to understand how polar ice sheets responded to changes in insolation and atmospheric CO2in the past and how ice sheet evolution influenced global sea level and vice versa. Five sites (U1534-U1538) were drilled east of the Drake Passage: two sites at 53.2°S at the northern edge of the Scotia Sea and three sites at 57.4°-59.4°S in the southern Scotia Sea. We recovered continuously deposited late Neogene sediment to reconstruct the past history and variability in Antarctic Ice …

Clinical Presentation And Risk Factors Of Increased Scabies Cases In The Western Region Of Saudi Arabia In 2016-2018, Mohammed Abdal-Aziz

Saudi Medical Journal

Objectives: To describe the clinical characteristics of scabies in the Makkah province and analyze risk factors associated with the outbreak. Methods: A cross-sectional study was conducted between June 2016 and June 2018 by collecting the data of patients reported to have infestations at King Abdulaziz Medical City, Makkah, Saudi Arabia. A comparative analysis was conducted of patients reported before and during the outbreak of scabies. Results: Of the 352 patients identified, the range of cases was 0-24 cases per month before the months of the outbreak (March to April 2018). However, the actual number of cases reported increased 2.8 times …

Microbial Community, Functioning, And Its Relationship With Heavy Metals In An Urban Brownfield, Jay Prakash Singh

Theses, Dissertations and Culminating Projects

The ubiquity of urban brownfields presents a challenge for environmental managers for managing degraded ecosystems that are in close contact with human habitation. Presence of metal contaminants in brownfields further complicate the matters as it cannot be degraded and hence pose a high risk to human and environmental health, and well-being of the local community. However, previous studies indicate that management and restoration of brownfields are possible through the use of low input longer term and sustainable remediation approaches. These sustainable approaches include the use of plants, fungi, and bacteria to increase soil function and mitigate risks from the contaminants. …

Assessment Of Mean Annual Precipitation And Pco₂ Effect On C₃ Land Plant Carbon Isotope Fractionation, Woohee Kim

Theses, Dissertations and Culminating Projects

Modern carbon dioxide (CO₂) levels are well known from instrumental observation (just exceeded 415 ppmv on May 13th, 2019). CO₂ levels (pCO₂) in the past, however, are difficult to obtain, especially for geologic time older than 800 thousand years (kyr). Many proxies have been used to infer past CO₂ levels in the geologic records, but the results are often incomplete and inconsistent. Here, I assess the uncertainty of a new pCO₂ proxy that has great potential to reconstruct continuous pCO₂ records across the entire Phanerozoic. This new proxy is based on stable …

Exploring The Role Of Evaporation And Precipitation Rates On Mangrove Island Morphology, Isamar M. CortéS

Theses, Dissertations and Culminating Projects

Mangroves are salt tolerant species of trees that grow in tropical and subtropical environments. Mangroves provide ecosystem services to societies along marine environments, including storm protection, coastal biodiversity, and blue carbon storage. However, as the importance of mangrove ecosystems has become clearer over recent years, their coverage has been reduced through mismanagement and climate impacts. For instance, in terms of climate warming, mangroves cannot survive under abnormally high rates of net evaporation when soil stressor concentrations (e.g., sulfate, sulfide) increase above threshold conditions. To study the effects of this climate driver phenomenon on mangrove islands, we are examining mangrove islands, …

Stable Isotope And Geochemical Characterization Of Nutrient Sources In The Big Creek Watershed Of Northwest Arkansas, Kelly Robin Sokolosky

Graduate Theses and Dissertations

The establishment of a concentrated animal-feeding operation (CAFO) in Newton County, Arkansas near Big Creek, a tributary of the Buffalo National River, has raised concern over potential degradation of water-quality in the watershed. In this study, isotopic tools were combined with standard geochemical approaches to characterize nutrient sources and dynamics in Big Creek. An isotopic and geochemical reference library of potential nutrient sources in the Big Creek watershed was established by direct sampling of representative potential sources, including septic-system effluent, poultry litter, swine and cattle manure, and CAFO waste lagoons. Representative nutrient sources and Big Creek stream samples were analyzed …

Consecutive Extreme Flooding And Heat Wave In Japan: Are They Becoming A Norm?, Shih-Yu Simon Wang, Hyungjun Kim, Dim Coumou, Jin-Ho Yoon, Lin Zhao, Robert R. Gillies

Plants, Soils, and Climate Faculty Publications

In July 2018, Japan experienced two contrasting, yet consecutive, extreme events: a devastating flood in early July followed by unprecedented heat waves a week later. Death tolls from these two extreme events combined exceeded 300, accompanying tremendous economic losses (BBC: July 24, 2018; AP: July 30, 2018). Meteorological analysis on these 2018 events quickly emerged (JMA-TCC, 2018; Kotsuki et al., 2019; Tsuguti et al., 2019), highlighting several compound factors: a strengthened subtropical anticyclone, a deepened synoptic trough, and Typhoon Prapiroon that collectively enhanced the Baiu rainband (the Japanese summer monsoon), fostering heavy precipitation. The comprehensive study of these events, conducted …

Commuter Choices Program Assessment: An Analysis Of Wcu's Uptown Loop Shuttle Bus, Rideamigos, Zagster Bikeshare, And Rideshare Parking Spaces Programs, Lola Adewale, Bradley Flamm

WCU Campus Sustainability Initiatives

No abstract provided.

A Polycentric Waste Management System In The Kathmandu Valley, Nepal, Sanae Ito

Journal of Environmental Science and Sustainable Development

This study examined contemporary waste management systems in the Kathmandu Valley, Nepal. Many waste management projects have been launched in Nepal since the 1980s. Recent projects have targeted citizens’ awareness. Governments and international donor agencies have reported that awareness of waste management has not yet been achieved. Previous studies have discussed the failures of waste management in Nepal, while others have pointed out the negative impacts of waste management projects on the local community. In this paper, an alternative framework for understanding the waste issue from an anthropological perspective is provided through a case study. Specific attention was paid to …

Preface, Table Of Contents, & Acknowledgments, Herdis Herdiansyah

Journal of Environmental Science and Sustainable Development

The development of the world demands changes in the environment from time to time, and this condition can not be avoided, for that the academic world is required to always be ready and watchful for this condition. This challenge makes the Journal of Environmental Science and Sustainable Development (JESSD) continue to be consistent with the focus of environmental studies until now. Starting with the inaugural edition in 2018, JESSD continues to be aware and focus on environmental studies and sustainable development in developing countries, especially for Southeast Asia countries. In this issue of Volume 2 Issue 1, we present eight …

Oil Spill Response Preparedness Model Through Community Participation In Teluk Penyu Beach, Cilacap Regency, Tri Edhi Budhi Soesilo, Chiquita Tri Rezki, Ihya Sulthonuddin

Journal of Environmental Science and Sustainable Development

In Indonesia, oil spill incidents often occur; thus, it has become a matter of national concern. Cilacap Regency is one of the regions in Indonesia that is prone to oil spills, with a history of frequent oil spill incidents during 2000–2018. Oil spill response preparedness needs the integrated effort between government and communities to minimize the environmental impacts of oil spills. A problem usually encountered is the lack of integration of community participation in the oil spill contingency plan because of the limited knowledge of the community regarding oil spill response preparedness. This study aimed to build an oil spill …