Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

2016

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 149461 - 149490 of 160213

Full-Text Articles in Entire DC Network

Assessing The Compatibility Of Filth Fly Pesticides With Filth Fly Biological Control Parasitoids Through Toxicological And Behavioral Assays, Edwin R. Burgess Iv Jan 2016

Assessing The Compatibility Of Filth Fly Pesticides With Filth Fly Biological Control Parasitoids Through Toxicological And Behavioral Assays, Edwin R. Burgess Iv

Graduate Research Theses & Dissertations

Filth flies are a significant pest at animal production facilities, leading to economic losses that include reductions in animal weight and milk production. Pesticides and biological control organisms are two important components of Integrated Pest Management (IPM) programs against filth flies. Biological control against filth flies frequently involves augmentative releases of pupal parasitoids. The compatibility of pesticides and the parasitoids Spalangia endius Walker and Urolepis rufipes Ashmead was examined using one of the most common filth flies, the house fly, Musca domestica L. The specific goals were to 1) assess the effects of the active ingredients of several house fly …

Go to article

Automatic Machine Learning-Guided Methods For 3d Synapse Quantification In Confocal Neuron Images, Jonathan William Sanders Jan 2016

Automatic Machine Learning-Guided Methods For 3d Synapse Quantification In Confocal Neuron Images, Jonathan William Sanders

Graduate Research Theses & Dissertations

This thesis explores computational methods for automatically detecting and quantifying synapses in complex 3D neuronal images. The resulting approach is a novel combination of traditional image processing, machine learning algorithms, and multi-channel comparison methods designed to overcome the unique challenges posed by these images. The methods investigated combine the strengths of each of these components in order to produce an overall method that is capable of fully detecting the synapses in large 3D confocal neuron images with minimal interaction. Human annotation of 3D neuron images remains prohibitively difficult and subjective, and computational analysis tools are highly desirable in the expanding …

Go to article

Behavioral And Chemical Ecology Of A Male-Produced Substrate-Borne Pheromone In Urolepis Rufipes, Tyler Wittman Jan 2016

Behavioral And Chemical Ecology Of A Male-Produced Substrate-Borne Pheromone In Urolepis Rufipes, Tyler Wittman

Graduate Research Theses & Dissertations

Use of chemical signals for sexual communication is found in a large proportion of insects. Pheromones may also act as honest signals of the sender's health and resources. Most research has focused on female-produced pheromones used for attracting mates over large distances or on the role pheromones play in species and mate recognition. Little work has been done exploring male produced pheromones, and how pheromones may be involved in mate assessment. Here I show that females of the parasitic wasp Urolepis rufipes discriminate for some aspects of male quality through the male's substrate-borne pheromones. In two-choice trials females spent more …

Go to article

Benefits And Emotions Present In Offline And Online Communities : A Taxonomic Analysis, Maureen J. Wieland Jan 2016

Benefits And Emotions Present In Offline And Online Communities : A Taxonomic Analysis, Maureen J. Wieland

Graduate Research Theses & Dissertations

This interpretive qualitative study was established to explore the differences and similarities between the benefits gained through online and offline community membership as well as the emotions that are commonly present during conversations between community members. Through an online survey, responses were collected in order to create a typology of benefits as well as emotions discussed within each type of community (either offline of online). The researchers discovered a variety of differences as well as similarities that expand the current research on the field of communication community scholarship.

Go to article

Beyond Adat : Transwomen Boldly And Innovatively Navigating Their Communities In Central Java, Indonesia, Laurence Anthonie Tumpag Jan 2016

Beyond Adat : Transwomen Boldly And Innovatively Navigating Their Communities In Central Java, Indonesia, Laurence Anthonie Tumpag

Graduate Research Theses & Dissertations

The purpose of the following thesis was to investigate how transwomen (otherwise known locally as waria) of Indonesia, navigate their gender identities within their specific locales in central Java. Particularly, I focus how my respondents do this within Yogyakarta, which I define as a cultural hub where local custom and law known as adat predominates and two other field sites located in the periphery of Yogyakarta. Due to the importance of local culture in the general central Javanese region, I hypothesized adat serves to help create space and belonging for my transwomen respondents within each locale. While previous research has …

Go to article

"All That Weight Is Gonna Crush Your Chest" : Examining The Relationship Between Mentoring, Academic Success, And Self-Efficacy In Latino Male Community College Students, Sadya Khan Jan 2016

"All That Weight Is Gonna Crush Your Chest" : Examining The Relationship Between Mentoring, Academic Success, And Self-Efficacy In Latino Male Community College Students, Sadya Khan

Graduate Research Theses & Dissertations

The purpose of this study was to explore the relationship between mentoring, academic success, and self-efficacy for Latino male students at a community college. Additionally, the study explored the significance of mentor matching with respect to race/ethnicity upon academic success and self-efficacy. The study used a quantitative approach to assess the predictive power of mentoring on the academic success of Latino male students, defined by GPA, as well as academic self-efficacy beliefs. The sample consisted of 123 Latino male students from a community college in Illinois. The College Student Mentoring Scale (CSMS) and the SELF-A scales were adapted into a …

Go to article

"Anonymous" And Frame Construction In Social Media, Justin Yates Jan 2016

"Anonymous" And Frame Construction In Social Media, Justin Yates

Graduate Research Theses & Dissertations

Social movement organizations operate and communicate using new mediums, such as the use of social media. Anonymous is a non-hierarchical online activist group with unidentified members that engages in exploiting technology toward politically motivated goals. This study examined how a group without formal structure or identifiable members frames its activities as "righteous." Specifically, this study examined the rhetoric of a non-hierarchical online activist group with unidentified members and how it frames its activities as just. This study explored the challenges in maintaining and creating righteous rhetoric for a group with online, non-hierarchical, and unidentified members. Using social movement framing theory …

Go to article

21st Century Assessment : An Examination Of The Relationship Among Computer-Adaptive Homework, Self-Regulation Strategies And Student Scores On Computer-Adaptive Assessment, Darla Bennett-Smailis Jan 2016

21st Century Assessment : An Examination Of The Relationship Among Computer-Adaptive Homework, Self-Regulation Strategies And Student Scores On Computer-Adaptive Assessment, Darla Bennett-Smailis

Graduate Research Theses & Dissertations

This study investigated the relationship between fifth grade students' computer-adaptive assessment performance (TAP) scores when a computer-adaptive eLearning platform was assigned for homework along with a self-regulated learning (SRL) treatment intervention. The adaptive learning theoretical model and the TAP conceptual framework supported the rationale for the utilization of the digital computer-adaptive systems of learning and assessing. In addition, the study examined the predictive ability of the Measures Strategy Learning Questionnaire (MSLQ) a self-reporting survey on MAP assessment performance scores. The theory of SRL provided the foundation for the strategies implemented in this study. The participants consisted of three fifth-grade classes …

Go to article

A 5200 Year Record Of Precipitation Changes In West-Central Guatemala Inferred From Lacustrine Carbonate-Based Stable Isotopes, Jacob Ryan Feller Jan 2016

A 5200 Year Record Of Precipitation Changes In West-Central Guatemala Inferred From Lacustrine Carbonate-Based Stable Isotopes, Jacob Ryan Feller

Graduate Research Theses & Dissertations

Guatemala is a drought-sensitive country that experiences varying amounts of precipitation in response to Atlantic and Pacific Ocean influences. A 5.5 m, finely-laminated sediment core from Lake San Francisco in the Huehuetenango province was collected in order to reconstruct precipitation changes over the last ~5,200 years at a decadal-scale resolution. An age-depth model was developed based on 7 radiocarbon ages of charcoal as well as ²¹⁰Pb dating of surface sediments. Authigenic calcite preserved in the sediment record provides an archive of lake-water isotopic variability in response to climate driven changes in hydrologic balance. Modern surface water isotope data taken from …

Go to article

A Bioinformatic Study On The Evolution Of Bamboos And Other Graminoid Poales, William P. Wysocki Jan 2016

A Bioinformatic Study On The Evolution Of Bamboos And Other Graminoid Poales, William P. Wysocki

Graduate Research Theses & Dissertations

For the past decade, next-generation sequencing (NGS) has been used to undertake genomics-scale projects in molecular biology. This method of sequencing involves randomly fragmenting a sample of nucleic acid and randomly generating millions of short reads. The large number of reads moves the assembly and other analyses to be performed by computer algorithms. As well as sequencing full chromosomes, full RNA extracts can be sequenced to determine levels of gene expression and exon boundaries. In this study, NGS is used to examine the evolution of bamboos (Bambusoideae), which are a subfamily of grasses (Poaceae). Bamboos are divided into two main …

Go to article

A Bird For The Ages : National Concupiscence In The Work Of John Milton, Doug Depalma Jan 2016

A Bird For The Ages : National Concupiscence In The Work Of John Milton, Doug Depalma

Graduate Research Theses & Dissertations

This thesis examines the religious concept of concupiscence in the work of John Milton from Comus to Samson Agonistes with a special focus on Milton's political tracts and histories. I suggest in readings of Comus, Eikonoklastes, and The Ready and Easy Way that we find Milton interacting with concupiscence in a different way as his experiences in the British Commonwealth advanced. In the Comus we find Milton willing to forgive the concupiscent Lady, yet in Eikonoklastes and The Ready and Easy Way, Milton describes the "thralls" that dominate his later prose work in a keenly concupiscent manner such that the …

Go to article

A Case Study Exploring Saudi Special Education Teachers' Perceptions Toward The Use Of Mobile Technology For Teaching Purposes, Adel Ibrahim Qahmash Jan 2016

A Case Study Exploring Saudi Special Education Teachers' Perceptions Toward The Use Of Mobile Technology For Teaching Purposes, Adel Ibrahim Qahmash

Graduate Research Theses & Dissertations

Within the last few decades special education has benefited from the vast revolution of technologies. These technologies have contributed in facilitating cognitive development as well as learning processes for students with disabilities. One of these emerging technologies is the tablet device and its applications. Due to increasing demands to integrate the latest technology into educational settings, previous studies have looked at the potential of adopting tablet devices and their applications as instruction technology tools in special education classrooms. This case study sought to explore male special education teachers' perceptions toward using tablet devices for teaching purposes in Saudi Arabia. The …

Go to article

A Case Study Examining Perceptions Of Female Saudi University Students Regarding The Use Of Asynchronous Online Discussion Boards, Hanadi M. Bokhari Jan 2016

A Case Study Examining Perceptions Of Female Saudi University Students Regarding The Use Of Asynchronous Online Discussion Boards, Hanadi M. Bokhari

Graduate Research Theses & Dissertations

This phenomenological case study explored undergraduate Saudi female students' perceptions of using asynchronous online discussion boards (AODB) as a learning tool. In addition, the current study explored factors that helped students learn skills, specifically their language learning. The current study sought to add to knowledge about how asynchronous online discussion forums can benefit undergraduate Saudi female students' development of learning. Data were collected during the Spring 2016 semester through focus group and individual interviews with ten undergraduate students in an online course as well as their narrative reflections and the researcher reflections and notes. Participants were undergraduate Saudi female students …

Go to article

A Covert War At Sea : Piracy And Political Economy In Malaya, 1824-1874, Scott C. Abel Jan 2016

A Covert War At Sea : Piracy And Political Economy In Malaya, 1824-1874, Scott C. Abel

Graduate Research Theses & Dissertations

Piracy around the Malay Peninsula during the 19th century was extraordinarily prevalent and resulted in the death and loss of liberty for an untold number of people. This essay examines the connections between the piracy of this era and the political economies of the Straits Settlements and the Malay states in the region. Malays pirates often had the support of local rulers who required the goods and slaves brought back by pirates to reinforce their own political and socio-economic positions. The piratical system supported by the rulers was a component of the overall Malay economic system known as kerajaan economics, …

Go to article

Analysis And Extension Of A Flexible Stochastic Differential Equation Model To Estimate The Amount Of Nanoconjugates Required To Initiate Remission Of Cancer, Nicholas Joseph Skradski Jan 2016

Analysis And Extension Of A Flexible Stochastic Differential Equation Model To Estimate The Amount Of Nanoconjugates Required To Initiate Remission Of Cancer, Nicholas Joseph Skradski

Graduate Research Theses & Dissertations

This thesis examines a definition of reliability that can be applied to targeted nanoconjugate chemotherapy in cancer and also simulates a stochastic differential equation model to attempt to predict the estimated time until remission when using targeted nanoconjugate chemotherapy utilizing a recursive algorithm to attempt to find the dose of nanoconjugates that will result in remission by an expected time T. Areas of research that can be used to obtain model parameter values are cited and values for the dose of nanoconjugates, given as number of nanoconjugates, are predicted for several different model parameters. The model is then extended to …

Go to article

African American Males' Perceptions Of A Midwestern Community College, Marietta Turner Jan 2016

African American Males' Perceptions Of A Midwestern Community College, Marietta Turner

Graduate Research Theses & Dissertations

The educational statistics continue to report dismal persistence and completion rates for male African American community college students. Many scholars have noted the fact that African American males remain further behind all other demographics in college enrollment and completion. In this study, I sought to advance the literature on student engagement and academic success by exploring these students' perceptions of their college-going experience. The purpose of the study was to better understand African American male community college students' perceptions of their academic and social experiences at one midwestern community college. The theoretical framework for this study was achieved by combining …

Go to article

Altering State Intolerance Of Uncertainty And Its Influence On Checking Behavior, Hannah Faleer Jan 2016

Altering State Intolerance Of Uncertainty And Its Influence On Checking Behavior, Hannah Faleer

Graduate Research Theses & Dissertations

Obsessive-Compulsive Disorder (OCD) is a heterogeneous mental disorder characterized by the presence of obsessions and compulsions that can have debilitating effects on the lives of individuals affected by it. Whereas obsessions and compulsions can fixate on nearly any subject, they tend to cluster around certain themes (e.g., cleaning, checking, symmetry). From a cognitive-behavioral perspective, certain dysfunctional beliefs or attitudes are believed to contribute to the etiology and maintenance of OCD. One of these beliefs is intolerance of uncertainty (IU), the tendency for an individual to avoid ambiguous situations and view him or herself as unable to cope in the face …

Go to article

An Activity Theoretical Perspective On Inter-Organizational Collaboration In Instructional Technology Development And Implementation, Robin Angela Medley Jan 2016

An Activity Theoretical Perspective On Inter-Organizational Collaboration In Instructional Technology Development And Implementation, Robin Angela Medley

Graduate Research Theses & Dissertations

This study examined the collaborative aspects of instructional technology development and implementation on the P.R.I.D.E. Digital Curriculum (PDC). The multimedia PDC training product was developed through an inter-organizational collaboration amongst several agencies and organizations. An increase in globalization and decentralization of organizations is changing how instructional designers communicate with the design and development teams. Cultural differences between institutions is significant when designing and developing collaborative material. This study utilized activity theory and activity systems analysis to examine communication practices, cultural influences, and synergy of the partners with a developer's perspective on instructional design and development. The findings revealed cultural differences …

Go to article

An Analysis Of The Great Melting Pot In American World War Ii Propaganda : Germans, Japanese, And Italians Need Not Apply, Crystal Sturgeon Jan 2016

An Analysis Of The Great Melting Pot In American World War Ii Propaganda : Germans, Japanese, And Italians Need Not Apply, Crystal Sturgeon

Graduate Research Theses & Dissertations

This research studied the implications of the metaphor of the American melting pot and how those implications can be seen even today. The main artifacts are propaganda from World War II, specifically The Ducktators, Der Fuehrer's Face, and a propaganda poster. I also consider the modern day image of the salad bowl and examine how a great deal of the xenophobia and ethnic prejudice in World War II is still alive and well, although perhaps in a slightly different form and focused on different groups. I also examine the rhetorical devices used in World War II propaganda and how they …

Go to article

Differences Among Subgroups In Concurrent And Predictive Validity Of Timed Oral Reading Fluency Measures And Informal Reading Inventories On Performance On Computer Adaptive Assessments Of Reading, Paul J. Perry Jan 2016

Differences Among Subgroups In Concurrent And Predictive Validity Of Timed Oral Reading Fluency Measures And Informal Reading Inventories On Performance On Computer Adaptive Assessments Of Reading, Paul J. Perry

Graduate Research Theses & Dissertations

Recent legislation such as No Child Left Behind and the Performance Evaluation Reform Act (PERA) increasingly pressure teachers and schools to be accountable for instructional time in the form of improved test scores. As a result, students are given an increasing variety of assessments in a given school year in an attempt to measure academic growth over time. These assessments frequently occur in the form of curriculum-based measures (CBM) of oral reading fluency, informal reading inventories (IRIs), computer adaptive tests (CATs) of reading, and annual high stakes assessments of reading ability. While a review of the literature reveals a well-established …

Go to article

Do Anxious Applicants Become Lower Performing Employees?, Elora C. Voyles Jan 2016

Do Anxious Applicants Become Lower Performing Employees?, Elora C. Voyles

Graduate Research Theses & Dissertations

Numerous studies have found that anxious applicants perform less well in interviews and subsequently receive lower ratings and are less likely to be hired compared to non-anxious applicants. However, no studies have yet examined if applicants who are anxious during the interview subsequently perform less well on the job compared to non-anxious applicants. In this laboratory study, work task performances of participants who appear anxious and/or report anxiety during simulated interviews were compared to those who did not appear anxious and/or did not report anxiety. The results of this study showed that interview anxiety was negatively related to interview performance; …

Go to article

Do Folivores Deplete Patches? : Foraging Behavior And The Dynamics Of Resource Use In The Costa Rican Mantled Howler (Alouatta Palliata), Jessica Ritsche Jan 2016

Do Folivores Deplete Patches? : Foraging Behavior And The Dynamics Of Resource Use In The Costa Rican Mantled Howler (Alouatta Palliata), Jessica Ritsche

Graduate Research Theses & Dissertations

Two general assumptions have often been made about folivorous primates: first, that feeding competition is low or absent because leaves are a superabundant and evenly dispersed resource, and as a result, that feeding competition does not constrain the size of folivorous groups. However, many folivorous primates maintain smaller group sizes. In this study, I aimed to examine this 'folivore paradox' by testing the hypothesis that mantled howler monkeys (Alouatta palliata) deplete localized patches of young leaves and therefore experience feeding competition. One group of 8 adult individuals was studied July and August 2015 at Piro Research Station in the Osa …

Go to article

Does Inflated Responsibility Moderate The Relationship Between Thought-Action Fusion Beliefs And Neutralizing Behaviors?, Brenda Ellen Bailey Jan 2016

Does Inflated Responsibility Moderate The Relationship Between Thought-Action Fusion Beliefs And Neutralizing Behaviors?, Brenda Ellen Bailey

Graduate Research Theses & Dissertations

This study sought to empirically assess the theoretically suggested relationship---according to the cognitive-behavioral model---among cognitive beliefs in producing obsessive-compulsive behaviors. Two beliefs were identified: the belief that one is responsible for negative effects of thoughts and behaviors by either failing to prevent or acting to cause harm (inflated responsibility) and the belief that thoughts about negative events happening to others can increase their likelihood of occurring (thought-action fusion likelihood-others [TAF-LO]). A sample of N = 102 students participated in a manipulation of inflated responsibility by completing a linguistically altered measure of responsibility that either encouraged (high responsibility [HR]) or discouraged …

Go to article

Domestic Violence Counselors' Supervision Experiences : A Qualitative Inquiry, Ann Friesema Jan 2016

Domestic Violence Counselors' Supervision Experiences : A Qualitative Inquiry, Ann Friesema

Graduate Research Theses & Dissertations

This qualitative study provided understanding into how domestic violence counselors experience clinical supervision. Domestic violence counselors' supervision experiences, the relationship in supervision, and the ways in which counselors utilize supervision to meet their developmental and self-care needs were explored. Seven participants were recruited through purposive and snowball sampling. All seven participants were employed as full-time domestic violence counselors in non-profit agency settings in which counseling services were provided to victims of domestic violence and their children free of charge. Participants were required to hold a master's degree in counseling, or related field, receive weekly clinical supervision, and provide free counseling …

Go to article

Dreamkeepers At The Gate : Culturally Relevant And Responsive Pedagogy In The Community College Classroom, Stephanie A. Whalen Jan 2016

Dreamkeepers At The Gate : Culturally Relevant And Responsive Pedagogy In The Community College Classroom, Stephanie A. Whalen

Graduate Research Theses & Dissertations

This study was inspired by Gloria Ladson-Billings's work on culturally relevant pedagogy, which examined the common conceptions and shared aims of "Dreamkeepers" who were identified as particularly effective instructors of African American students. In addition to exploring the dispositions of Dreamkeeper faculty at the community college, the instructional practices of these faculty members were analyzed using the descriptive characteristics of culturally responsive pedagogy according to Geneva Gay. The implications of the study include deeper understanding of a culturally relevant pedagogy and cultural integrity as foundations for cultural responsiveness in the community college classroom. These concepts are clarified through qualitative analyses …

Go to article

Elephant On A Stepladder : An Exploration Of Pre-Service English Teacher Assessment Literacy, Amy M. Howerton Jan 2016

Elephant On A Stepladder : An Exploration Of Pre-Service English Teacher Assessment Literacy, Amy M. Howerton

Graduate Research Theses & Dissertations

The purpose of this exploratory qualitative study was to examine pre-service high school English teachers' instructional experiences with formative assessment while student teaching. Participants were gathered using a web-based questionnaire, the Pre-Service Teacher Assessment Literacy Questionnaire, regarding assessment literacy skills. The study focused on five pre-service teachers enrolled in Midwestern universities who participated in five one-hour interviews and two 45-minute non-evaluative observations during the student teaching experience. Data from the questionnaire, interview, and observation data collection tools were analyzed using qualitative methods and through the theoretical lens of adult learning theory, theories of human development, and hermeneutic theory. Three key …

Go to article

Emotion Intolerance And Obsessive-Compulsive Symptoms, Stephanie Renee Orbon Jan 2016

Emotion Intolerance And Obsessive-Compulsive Symptoms, Stephanie Renee Orbon

Graduate Research Theses & Dissertations

Cognitive theories of OCD emphasize the role of dysfunctional interpretations of one's thoughts in the etiology and maintenance of OC symptoms. However, high levels of dysfunctional obsessive beliefs are not found to be characteristic of all individuals with OCD. The current study sought to investigate the possibility that an alternative process for symptom development may need to be considered. Specifically, it was hypothesized that low tolerance to various emotional experiences may be an important factor contributing to OC symptoms. Due to the heterogeneity of OCD, the "intolerable" emotional experience was thought to vary among individuals based on their specific symptoms. …

Go to article

Energy Expenditure Of Collegiate Golfers In A Competitive Setting, Kaela May Hierholzer Jan 2016

Energy Expenditure Of Collegiate Golfers In A Competitive Setting, Kaela May Hierholzer

Graduate Research Theses & Dissertations

Collegiate golf is a physically demanding sport, however, little research has been done to establish the amount of energy expenditure and metabolic demand that is placed on a golfer in a competitive tournament. With the advances in wearable technology, it has become more accessible to gain knowledge on physical activities taking place in the field. PURPOSE: The purpose of this study is to determine the accuracy of the Garmin VivoactiveHR(TM) activity tracker in the lab, in order to establish the amount of energy expenditure a collegiate golfer experiences during a competitive golf tournament. METHODS: Eight NCAA caliber golfers (4 males …

Go to article

Engineering And Chromosomal Integration Of A Functional Butanol Pathway In Escherichia Coli For Butanol Fermentation, Erin Garza Jan 2016

Engineering And Chromosomal Integration Of A Functional Butanol Pathway In Escherichia Coli For Butanol Fermentation, Erin Garza

Graduate Research Theses & Dissertations

A butanol fermentation pathway was engineered in Escherichia coli through cloning and chromosomal integration of the butanol genes (thiL, CA_C2873, hbd, crt, bcd, etfA, etfB, adhe1, adhe2, bdhAB) from Clostridium acetobutylicum ATCC824. Initially, a minimal set of butanol pathway genes (thiL, hbd, crt, bcd, etfAB, adhe2) was transcriptionally fused with a pflBp6 promoter and were integrated into the chromosome of E. coli EG10, a strain lacking endogenous competing fermentation pathways, resulting in strain EG60. Anaerobic fermentations showed that EG60 was able to produce 100 muM butanol, suggesting that the butanol pathway genes were effectively expressed for butanol production. Although the …

Go to article

Early Pliocene Ross Sea Paleoclimate And A New Application Of The Diatom Oxygen Isotope Proxy, Hal W. Hackett Jan 2016

Early Pliocene Ross Sea Paleoclimate And A New Application Of The Diatom Oxygen Isotope Proxy, Hal W. Hackett

Graduate Research Theses & Dissertations

Oxygen isotope measurements (δ¹⁸O) provide valuable insight into climate conditions. These data are advantageous as paleoclimate proxies, but records are sparse in high latitude waters, where calcareous microfossils are poorly preserved in marine sediments. Over glacial timescales, high latitude regions likely have the widest variability in terms of the δ¹⁸O values of marine waters; therefore, the paucity of data in these regions greatly hinders our ability to reconstruct global climatic and environmental change. This research is motivated to investigate Southern Ocean diatoms as a way to begin filling the gap in our knowledge. Diatoms are a cosmopolitan group of siliceous …

Go to article

First Prev Next Last