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Articles 1 - 28 of 28
Full-Text Articles in Life Sciences
Green Roof System Integrated Soil Methods, Jude R. Vallon, Ivan L. Guzman
Green Roof System Integrated Soil Methods, Jude R. Vallon, Ivan L. Guzman
Publications and Research
Large metropolitan areas like NYC are seeking to integrate sustainability into retrofitting buildings for the development of green infrastructure. Among the many environmental issues of urbanization, the UHI (urban heat island) effect and storm water runoff are of particular interest when it comes building structures. Individual buildings can contribute towards mitigating these effects with implementation of vegetative rooftops, i.e. Green Roofs. Commercial buildings are currently receiving government incentives and new constructions are required to include green roof installations. However, if existing buildings are considering the addition of a green roof on an existing roof, they have to factor in the …
The Ethical Implications Of Bioengineering Advancements, Mainstream Media Coverage Of Those Developments, And The Future Of Motherhood, Aliff Abad, Katherine Gregory
The Ethical Implications Of Bioengineering Advancements, Mainstream Media Coverage Of Those Developments, And The Future Of Motherhood, Aliff Abad, Katherine Gregory
Publications and Research
How do the media interpret reproductive interventions that involve genetic testing? When a scientist performed the first known genetic editing on twins, Lulu and Nana, he ignored ethical considerations of CRISPR use. This project provides a content analysis based on a review of popular science and newspaper articles. Our interpretation of these articles suggest that there is a lack of critical understanding of this unethical procedure and a similar attitude towards future genetic developments. While the public is curious about the repercussions of genetic editing, not enough focus is applied to the ethics of conducting such a procedure.
Opening Of An Epoxide Ring Using Azide To Form A Triazole, Emily Hufnagel, Jeffrey A. Hansen
Opening Of An Epoxide Ring Using Azide To Form A Triazole, Emily Hufnagel, Jeffrey A. Hansen
Annual Student Research Poster Session
No abstract provided.
Spanish Immersion And Soil Research At The Monteverde Institute In Monteverde, Costa Rica, Donna J. Riner
Spanish Immersion And Soil Research At The Monteverde Institute In Monteverde, Costa Rica, Donna J. Riner
Annual Student Research Poster Session
No abstract provided.
Synthesis Of Ether Alcohols With Varying Catalysts, Hannah Grady, Frida Li, Jeffrey A. Hansen
Synthesis Of Ether Alcohols With Varying Catalysts, Hannah Grady, Frida Li, Jeffrey A. Hansen
Annual Student Research Poster Session
No abstract provided.
Wwoofing In Northern Europe: A Cross-Cultural Examination Of Food, Farming, And Community, Seth Brawner
Wwoofing In Northern Europe: A Cross-Cultural Examination Of Food, Farming, And Community, Seth Brawner
Annual Student Research Poster Session
No abstract provided.
Impact Of The Degree Of Urbanization On Bird Abundance And Diversity, Gabrielle Doyle, Sheila Garcia, Sophie Kidd, Tra'dayja Smith
Impact Of The Degree Of Urbanization On Bird Abundance And Diversity, Gabrielle Doyle, Sheila Garcia, Sophie Kidd, Tra'dayja Smith
Fall Showcase for Research and Creative Inquiry
Bird diversity and abundance in Farmville, Virginia. Sampling twice a day, four days a week.
A Toolkit For Managing The Ee (Environmental Education) And Esd (Education For Sustainable Development) Continuum, Attiyya Atkins, John J. Pipoly Iii
A Toolkit For Managing The Ee (Environmental Education) And Esd (Education For Sustainable Development) Continuum, Attiyya Atkins, John J. Pipoly Iii
Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures
Environmental Education (EE) and Education for Sustainable Development (ESD) represent extremes of a global continuum. EE stresses awareness of process about, from and for the environment (Vrasidas 2007). ESD is defined as education empowering communities to acquire best management practices engendering human, social, economic and natural sustainability (UNESCO 2012) and developing their resilience despite environmental changes (Fastenrath et al. 2019). ESD is a critical component of the UN's Sustainable Development Goals (UN 2012), which grew from the Millennium Development Goals (UN 2000). Each park agency should develop research-based educational programs that address both EE and ESD. The ESD must promote …
Effects Of Invasive Species On Post-Fire Ceanothus Spinosus Seedling Establishment, Nina Duchild, Frank W. Ewers, Stephen D. Davis
Effects Of Invasive Species On Post-Fire Ceanothus Spinosus Seedling Establishment, Nina Duchild, Frank W. Ewers, Stephen D. Davis
Featured Research
This study compared seedling establishment of the native chaparral species Ceanothus spinosus in two different burn sites at Pepperdine University following the Woolsey Fire of November 2018. One site was a low-density fuel site, and experienced a “cool burn,” and the other site was a high-density fuel site and experienced a “hot burn.” In the low-density fuel site, fire type-conversion had occurred, resulting in a dominance of exotic species. The high-density fuel site was populated by many native fire-following species and chaparral shrubs, exemplifying pristine post-fire conditions. Initially, I hypothesized that seedling success in the cool burn site would be …
Seedling And Resprout Survival Of Three Chaparral Species Following Woolsey Wildfire, Karagan L. Smith, Stephen D. Davis
Seedling And Resprout Survival Of Three Chaparral Species Following Woolsey Wildfire, Karagan L. Smith, Stephen D. Davis
Featured Research
Fire is a common natural disaster that effects Southern California. Combined with recent chronic drought, there has been an increase in the damage and frequency of these fires in recent years. Three chaparral species are common to the Pepperdine campus: Malosma laurina, Ceanothus spinosus, and Ceanothus megacarpus. The survival of these native species is essential because they are indicators for the changes that are occurring in our local ecosystem and provide further implications of how our ecosystem responds to natural disaster. Seedling recruitment and resprouting are mechanisms these chaparral species use to reestablish postfire. Postfire data have been recorded …
Post-Fire Soil Microbiome Recovery And Respiration In A Chaparral Ecosystem, Mari R. Irving, Stephen D. Davis
Post-Fire Soil Microbiome Recovery And Respiration In A Chaparral Ecosystem, Mari R. Irving, Stephen D. Davis
Featured Research
This study characterizes post-fire recovery of microbial and fungal populations adjacent to three keystone chaparral plant species affected by varying burn intensities via systematic measurement of soil respiration. The CO2 released from soil surrounding Ceanothus spinosus, Heteromeles arbutifolia and Malasma laurina affected by mild, severe or no heat during the Woolsey Fire of November 2018 were monitored and used as an indicator of microbial, fungal, and root activity. We hypothesized that soil which experienced less intense heat would exhibit higher rates of respiration based on preliminary data taken in March 2019. However, the opposite was observed from May through …
Photosynthetic Response Of Pentagramma Triangularis To Summer Desiccation, Brandon R. Grinovich, Stephen D. Davis
Photosynthetic Response Of Pentagramma Triangularis To Summer Desiccation, Brandon R. Grinovich, Stephen D. Davis
Featured Research
Ferns are thought to have been some of the first vascular plants to develop, perhaps on the order of 390 million years ago. Since then, ferns have speciated and developed innovative methods of survival especially in relation to water stress. Research conducted in 2016 by Helen Holmlund showed that eight California fern species fell into four primary classes of survival strategies, one of those being resurrection. Pentagramma triangularis is one of the resurrection-type ferns and is endemic to the western coast of the United States. As P. triangularis desiccates during the summer it enacts a physiological response by which it …
The Impact Of The Woolsey Fire On The Fungus Botryosphaeria Dothidea, Juan Arguijo
The Impact Of The Woolsey Fire On The Fungus Botryosphaeria Dothidea, Juan Arguijo
Featured Research
Southern California suffered a six-year drought in 2012 through 2018 during which the laurel sumac, Malosma laurina, experienced water stress and the fungus Botryosphaeria dothidea began to kill this plant, causing a massive dieback of this keystone chaparral species in the Santa Monica Mountains. Botryosphaeria is an opportunistic endophytic fungus that invades the xylem of woody type plants and waits till the plant starts to experience stress to proliferate. In November of 2018, the Woolsey fire burned up to 96,000 acres of vegetation. I ran tests at two sites on the Pepperdine University campus, the Baxter Ridge Site which …
Genetic Diversity Of Local Canines Assessed By Derived Cleaved Amplified Polymorphic Sequences, Nicole Benmoshe, Jeremy Seto
Genetic Diversity Of Local Canines Assessed By Derived Cleaved Amplified Polymorphic Sequences, Nicole Benmoshe, Jeremy Seto
Publications and Research
Breeding of the dog, Canis Iupus familiaris, over centuries has given rise to the selection of certain traits including size, shape, coat length, color and many behavioral traits. Inbreeding within dog breeds has resulted in the increase of genetic diseases, many of which are similar to human diseases making the dog an exemplary model organism to study. Using dCAPS (Derived Cleaved Amplified Polymorphic Sequences) we can identify SNPs (Single Nucleotide Polymorphisms) in the dog genome using buccal samples collected from four local dogs of different breeds, both large and small. After performing DNA extractions, PCR (Polymerase Chain Reaction), restriction enzyme …
Cultural Competence: Issues And Benefits In Healthcare Delivery, Tetiana Soloviova, Amina Shahbaz, Fahaneda Hassan, Zoya Vinokur
Cultural Competence: Issues And Benefits In Healthcare Delivery, Tetiana Soloviova, Amina Shahbaz, Fahaneda Hassan, Zoya Vinokur
Publications and Research
The extreme growth of New York State population causes to bring more challenges and opportunities for healthcare organization to provide culturally competent service to meet the need of diverse population. According to data from the US Census Bureau, minority groups are projected to make up nearly 50% of the population by the year 2050 compared with 30% in 2000. Outside of ethnicity, there are also many cultural and social groups with which people identify that may affect how they view or receive healthcare. It is very difficult to provide quality service for a diverse population due to language barriers, health …
Heteromeles Arbutifolia Associated Post-Fire Soil Microbiome Recovery And Respiration In A Chaparral Ecosystem, Gabrielle Boeger, Lauren Dedmon, Emma Thomsen, Alexander Soloniuk
Heteromeles Arbutifolia Associated Post-Fire Soil Microbiome Recovery And Respiration In A Chaparral Ecosystem, Gabrielle Boeger, Lauren Dedmon, Emma Thomsen, Alexander Soloniuk
Featured Research
The purpose of this post-Woolsey Fire project is to examine the relationship between soil respiration in areas of cool burns and hot burns relative to individuals of Heteromeles Arbutifolia. It was hypothesized that the soil subjected to a cooler burn would have greater respiration rates due to increased survival of microorganisms compared to a hotter burn. An Li-6800 CO2 Flux Chamber was used to collect measurements for several replicates. Significance was detected in the “Day 3” data, with the soil respiration higher at the cool burn site. Temperature and soil flux also varied directly. In the future experiments including increasingly …
Soil Respiration In Burned And Unburned Sites Of The Santa Monica Mountains, Sydney C. Jones, Micah S. Kim, Sierra H. Ball, Stephen D. Davis
Soil Respiration In Burned And Unburned Sites Of The Santa Monica Mountains, Sydney C. Jones, Micah S. Kim, Sierra H. Ball, Stephen D. Davis
Featured Research
Soil respiration (the flux of CO2 released by the soil due to microbial and root respiration and organic matter decomposition) can be affected by fire (Qu et al., 2009, Richards et al., 2012, Ryu et al., 2009). After the 2018 Woolsey Fire in the Santa Monica Mountains, we hypothesized that soil respiration would be greater in unburned soil than in burned soil. This is because fire can decrease soil nutrient concentration, which could decrease soil microbial concentration and also because fire could burn and kill soil microbes and roots. To test this relationship, we recorded soil respiration on three …
Physiological Performance Of Ceanothus Spinosus In Hot Burn And Cool Burn Sites, Rishi Gattu, Christian Hill, Chris Kulpaca
Physiological Performance Of Ceanothus Spinosus In Hot Burn And Cool Burn Sites, Rishi Gattu, Christian Hill, Chris Kulpaca
Featured Research
After the Woolsey Fire, many fire adapted plants will resprout. However, increased fire frequency has negatively impacted the reproduction of many native species, while enhancing the survivorship of many invasive species. We compared the physiological performance of Ceanothus spinosus resprouters in areas that burned hotter compared to areas that burned cooler. We hypothesized that resprouters in hotter burn sites would have better physiological performance than resprouters in cooler burn sites. The resprouters in hotter burn sites would have better performance because of decreased competition from invasive species. We measured physiological performance using a Li-Cor LI-6400, specifically photosynthesis, transpiration, and stomatal …
Comparative Fitness Of Post-Fire Transplant Stipa Pulchra And Wild Stipa Pulchra In Competition With Avena Fatua, Ashley Bonin, Madison Cook, Sara Head
Comparative Fitness Of Post-Fire Transplant Stipa Pulchra And Wild Stipa Pulchra In Competition With Avena Fatua, Ashley Bonin, Madison Cook, Sara Head
Featured Research
In the Spring Semesters of 2016 and 2017, research was conducted on the relative fitness of Stipa pulchra in the transplant garden on the Drescher campus at Pepperdine University. The first study in 2016 examined the fitness of Stipa pulchra and Avena fatua in the transplant and wild gardens after a five year drought in California. In the results of this experiment, the hypothesis was supported when observing that the wild S. pulchra depicted higher fitness that the transplant S. pulchra in areas of stomatal conductance, height, water potential, percent sun and dark-adapted fluorescence. The second study in 2017 investigated …
A Survey Of Post-Fire Chaparral Species’ Densities Using Point Quarter Sampling, Emma C. Stenz, Brandon R. Grinovich, Catherine H. William, Michael E. Gayed, Stephen D. Davis, Grace Palmer
A Survey Of Post-Fire Chaparral Species’ Densities Using Point Quarter Sampling, Emma C. Stenz, Brandon R. Grinovich, Catherine H. William, Michael E. Gayed, Stephen D. Davis, Grace Palmer
Featured Research
The purpose of this observational study was twofold: to add to the existing data regarding the plant species composition of the Pepperdine hillsides and to set in place a foundation for post-fire chaparral recovery studies that will ensue over the coming years through various programs and classes. The 2018 Woolsey Fire burned nearly all of the natural environment surrounding Pepperdine University and the greater Malibu region, so it is a matter of urgency to take this opportunity to learn more about how this natural environment of the chaparral responds to a catastrophic event like fire. We focused primarily on facultative …
Carbon Dioxide Flux Rate For Cold Burn And Hot Burn Sites, Sophia Cheong, Alexander G. Grissom, Grace K. Lank
Carbon Dioxide Flux Rate For Cold Burn And Hot Burn Sites, Sophia Cheong, Alexander G. Grissom, Grace K. Lank
Featured Research
This experiment seeks to further expand modern understanding of post-fire ecology via systematic measurement of soil respiration within areas burned by cool, mild flames and hot, intense flames caused by the recent Woolsey Fire. We theorized that within hot burned areas, soil respiration would be less than that of the cool burned areas because the microbe population in the hot burned areas would be affected far more than those subjected to a cool burn. By measuring soil respiration with our Li-6800 CO2 soil flux chamber at each of the according disc sites within hot and cold burned areas we …
Comparison Of Postfire Seedling Recruitment Of 2019 In Three Key Chaparral Species, Karagan Smith, Reid Furukawa, Brett Muramoto, Stephen D. Davis
Comparison Of Postfire Seedling Recruitment Of 2019 In Three Key Chaparral Species, Karagan Smith, Reid Furukawa, Brett Muramoto, Stephen D. Davis
Featured Research
Fire is a common natural disaster that sweeps through Southern California. Combined with periods of acute, and most recent, chronic drought, we have seen an increase in the damage and frequency of these fires in recent years. Three chaparral species are common to the Pepperdine campus: Malosma laurina, Ceanothus spinosus, and Ceanothus megacarpus. The survival of these three native species is essential because they serve as biomarkers for the changes that are occurring in our local ecosystem and provide further implications for how our ecosystem is responding to natural disaster. Seedling recruitment is a mechanism that is used by …
The Presence Of Fungal Pathogen, Botryosphaeria Dothidea, In Post-Fire Malosma Laurina Resprouts, Georgiana Gibson, Sarah Parker, Lauren Van Tress
The Presence Of Fungal Pathogen, Botryosphaeria Dothidea, In Post-Fire Malosma Laurina Resprouts, Georgiana Gibson, Sarah Parker, Lauren Van Tress
Featured Research
Botryosphaeria dothidea is an opportunistic fungal pathogen that infects plants, causing cankers to form on branches and stems, ultimately causing cell cavitation and embolism in the plant. Botyrosphaeria dothidea was found in much of the chaparral vegetation present in the Santa Monica Mountains prior to the November 2018 fire. In this study, we focused on the presence of Botryosphaeria dothidea in the chaparral plant Malosma laurina on Pepperdine University’s campus in 2 different populations: unburned and resprouts. We looked at whether the November 2018 fires had eliminated the pathogen from post-fire Malosma laurina resprouts, using the unburned Malosma laurina population …
Post-Fire Competition Between Native Ceanothus Spinosus And Exotic Grasses, Katarina Carter, Nina Duchild
Post-Fire Competition Between Native Ceanothus Spinosus And Exotic Grasses, Katarina Carter, Nina Duchild
Featured Research
In our experiment, we investigated the post-fire competition between native Ceanothus spinosus and exotic grasses in low and high-density fuel sites. We hypothesized that C. spinosus seedlings in the high-density fuel site would be larger and more numerous than seedlings in the low-density fuel site, due to differences in competition from exotics. Our results showed that there was no significant difference in seedling height of C. spinosus in the high-density fuel site (5.33 ± 0.55 cm) and in the low-density fuel site (4.31 ± 0.51 cm). There was also no significant difference in the average number of seedlings in the …
A Post-Fire Comparison Of Resprouts To Unburned Malosma Laurina Shrubs In The Santa Monica Mountains Of Southern California, Anthony Joseph Adducci Ii, Sierra Jo Smith, Dylan Jesse Waddill
A Post-Fire Comparison Of Resprouts To Unburned Malosma Laurina Shrubs In The Santa Monica Mountains Of Southern California, Anthony Joseph Adducci Ii, Sierra Jo Smith, Dylan Jesse Waddill
Featured Research
Fire is a cornerstone to Mediterranean ecosystems but increased droughts, climate change and human interference has caused a shift in fire frequency and severity. This experiment accessed the physiological performance of Malosma laurina resprouts in burned areas compared to mature Malosma laurina in unburned areas. Specifically, we hypothesized that the stomatal conductance, photosynthesis rate, and electron transport rate of the burned resprouts would all be higher than the unburned shrubs as there are more nutrients available in the soil post-fire and the resprouts have a larger root to stem ratio. Using the LI-6400 Portable Photosynthesis System, we measured the physiological …
Post Fire Seedling And Resprout Survival Of Melasma Laurina, Matthew Sturtevant, Gil So
Post Fire Seedling And Resprout Survival Of Melasma Laurina, Matthew Sturtevant, Gil So
Featured Research
For this research project we set out to see how seedling and resprout survival rate of melasma laurina would fare in the post fire environment found around pepperdine. The expected seedling survival was set to be 1% and the resprout survival was at 100%. From our field research we found that the the seedling survival was 41% and the resprout 57.3%. By using a T-test we had a p value < 0.001 for both data sets, this means that our data deviated greatly from our expected data and meant that we had to reject our hypothesis.
The Role Of Plastic Debris Found In The Loggerhead Sea Turtle's Digestive Tract & How It Effects The Reproduction Survival Rate, Taylor Clements
The Role Of Plastic Debris Found In The Loggerhead Sea Turtle's Digestive Tract & How It Effects The Reproduction Survival Rate, Taylor Clements
Spring Showcase for Research and Creative Inquiry
No abstract provided.
Monitoring Biodiversity Using Aquatic Environmental Dna And Nanopore Sequencing, Jordan Callahan
Monitoring Biodiversity Using Aquatic Environmental Dna And Nanopore Sequencing, Jordan Callahan
SURE (Stonehill Undergraduate Research Experience)
This project aimed to detect wetland organismal diversity on the Stonehill College campus by sequencing free aquatic eDNA collected from water samples in the seasonal wetland behind O’Hara Hall and Shields Science Center. The Oxford Nanopore MinION DNA sequencer offered real-time data collection at a relatively low cost and demonstrated an “in-the-field” workflow. DNA was extracted from water samples collected using a pump-filter collection apparatus. Protocols for Nanopore sequencing were established and surveys plan to be conducted in order to measure standing plant diversity around the sampling locations. Plant reads from each sample yielded plants primarily from the Brassica, Callitriche, …