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549 Matching Results
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The Impact of Exclusionary Discipline on Students' Academic Performance in Title I Elementary Schools
Exclusionary discipline is a consequence of behavior for students who break the student code of conduct. Extensive research about the effects that exclusionary discipline can have on secondary students, as evidenced by reduced graduation rates, has been conducted; but, research studies investigating the potential impact that exclusionary discipline can have on the academic outcomes of students at the elementary level have yet to be conducted. The use of exclusionary discipline is overrepresented in students with low socio-economic (SES) backgrounds; large populations of low-SES students are educated at Title I schools that receive federal funding to support academic growth. The purpose of this causal-comparative, non-experimental study was to investigate the impact that exclusionary discipline consequences had on fifth-grade students who attended all of the elementary schools within one north Texas school district during the 2018-2019 school year. In conjunction with the examination of the effect that the assignment of exclusionary discipline consequences can have on the academic outcomes of fifth-grade students, student-specific variables such as attendance at a Title I or non-Title I campus, student race, timing of exclusionary discipline assignment, and students in various educational programs were investigated to determine the potential impact of exclusionary discipline on fifth-grade students by …
Date:
May 2021
Creator:
McDaniel, Lindsey G.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Teachers' Technology Adoption in Cross-Cultural Classroom: A Transformative Perspective
In the current globalizing society, teachers are provided opportunities to move across their national borders to seek learning, professional development, and working opportunities. Technology-related professional development is particularly valued for teachers' sojourn to the technology intensive cultures. This qualitative cross-case study explored the K-12 Chinese language teachers' changes of teachers' application and perspective toward educational technology in cross-cultural teaching context through the lens of transformative learning theory. The qualitative data is collected from the interviews with 20 teacher participants in the four stages of cross-cultural sojourning: pre-departure, currently sojourning, post-sojourn, and immigrated. A qualitative cross-case analysis is conducted to compare the characteristics of teachers in different cases, and developed the complete process of the cross-cultural technology adoption and perspective. Factors contributed to the changes are also identified. Five issues related to the process are discussed. Implications and future directions were also included.
Date:
May 2021
Creator:
Meng, Nanxi
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Scope and Value of Healthcare Data Science Applications
Health disparities are a recognized public health concern and the need to address these disparities remains worthy of bringing new methods that assist in closing the gap. This research examined the effectiveness of data science to highlight health disparities, and to convey the value of data science applications in related health care applications. The goal of this research was accomplished by undertaking a multi-phased and multi-method approach, best represented in three individual essays. In essay one, a systematic literature review assessed the state in current academic literature of data science applications used to explore health disparities and to determine its applicability. The systematic review was guided by the Preferred Reporting Items for Systematic Review and Meta-Analyses (PRISMA) guidelines. Essay two assessed the capacity of data science software to address the effectiveness of these data science technologies in examining health disparities data. This was conducted using KDnuggets data pertaining to analytics, data science, and machine-learning software. The research in this essay demonstrated the potential utility of leading software to perform the kinds of data science operations that can achieve improved care in healthcare networks by addressing health disparities. Essay three provided an appropriate case study to showcase the value data science …
Date:
May 2021
Creator:
Huerta, Jose Oscar
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Factors Impacting Multicultural Teaching Competence among Counselor Educators: Ethnic/Racial Identity Development and Social Justice Orientation
Multicultural (MC) counseling and social justice (SJ) are foundational parts of counselors' professional identity, and they are fostered through a developmental process that counselor educators facilitate. The purpose of this study was to explore the relationship between counselor educators' ethnic/racial identity development (ERI), their social justice orientation (SJO) and their multicultural teaching competence (MCTC). MCTC was examined using the constructs of knowledge and sensitivity. Data was collected from a nationally distributed online survey. Data were analyzed using four hierarchical regression models in order to control for socially desirable responding. Results indicated that ERI was a significant predictor of MCTC-Knowledge (p < .001) and that SJO was a significant predictor of MCTC-Sensitivity (p < .001). Socially desirable responding was not significantly related to MCTC. Results suggest the importance of attending to ERI and SJO as separate processes in training future counselor educators.
Date:
May 2021
Creator:
Laird, Amber N
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
King of the Merchandise: How Showa Era Paratexts Forever Changed the Godzilla Franchise
The Godzilla media franchise is one of the longest running media franchises, which means the character himself has gone through many changes throughout the years. However, in American pop culture, the characters of Godzilla is perceived as a hero, a friend of humanity and defender of Earth. This reputation comes from the Showa Era, where Godzilla often fought on the side of humanity, rather than trying to destroy them as depicted in the original Gojira. In recent years, Toho, Godzilla's corporate owners, have been steering the King of the Monsters back into the villain role. Despite this tone shift by Godzilla's owners, American Godzilla paratexts still generally depict Godzilla as a hero. These depictions of Godzilla are used to maintain his status as a family friendly heritage brand and keep a door open for parents to introduce their children to the brand. Such a strategy allows Godzilla to survive into the modern day as an international powerhouse franchise.
Date:
May 2021
Creator:
Cooper, Dalton
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Participatory Research with Adolescent Emergent Bilinguals: Creating a Third Space to Support Students' Language and Literacy Learning
Teachers face pressures to meet the needs of an ever-changing diverse population of learners while simultaneously attempting to assist students in meeting state standards. There is a body of research that supports emergent bilinguals' growth in reading and writing. However, those practices do not necessarily reflect classroom instruction nor the needs of the students. The purpose of this study was to examine adolescent emergent bilinguals' perceptions about their learning from research-based literacy practices implemented in a classroom designed as a third space. Data were collected using participatory research and photo-elicitation and were analyzed using inductive analysis. The emergent bilinguals provided their insights about class assignments. Findings revealed that research-based literacy practices support emergent bilinguals' perceptions of learning when they are made accessible to them in distinctive yet extensive ways. For students to uncover which literacy activities they value, teachers need to present them with various opportunities to explore their own learning and encourage them to take ownership of their learning. Educators must consider the unique and individual needs of emergent bilinguals when designing the classroom environment and the lessons based on the standards. Recommendations for practitioners, professional development coordinators, and researchers are presented.
Date:
May 2021
Creator:
Garcia, Kimberly
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Investigating the Effects of Sketchnoting on Undergraduate Students' Learning Strategies
This study investigates the effects of sketchnoting, a visualized approach of notetaking, on learning strategies. The main questions asked were: What are the effects of sketchnoting on learners' learning strategies, including cognitive strategies (rehearsal, elaboration, organizational) and metacognitive strategies? Forty-eight undergraduate participants were divided into two groups, an experimental group, and a control group. Findings demonstrated a significant increase in cognitive learning strategies and metacognitive strategies in the experimental group. Other findings revealed that the aesthetic appeal of sketchnoting is the major reason motivating participants' sketchnoting behavior and the corresponding connection between design strategies and the learning strategies is the key of positive impacts of sketchnoting on learning strategies. Additional insights and implications are discussed.
Date:
May 2021
Creator:
Yang, Xue
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Restore, Reform, React, Revolt: Leopold II and the Risorgimento in the Grand Duchy of Tuscany, 1814-1859
The Risorgimento or "resurrection" of Italy united a collection of independent Italian kingdoms, duchies, and principalities under the auspices of the Piedmontese House of Savoy. No longer was Italy a mere expression géographique, as Austrian Chancellor Klemens von Metternich snidely remarked in 1847, but a united nation state. Studies of the Risorgimento successfully highlight the role of famous Piedmontese and Italian nationalists in demonstrating the success of the movement. However, the smaller states of the peninsula have largely disappeared from these histories. Among these overlooked states is the Grand Duchy of Tuscany and Tuscany's last grand duke, Leopold II of Habsburg-Lorraine. Both are consistently omitted from broader surveys of the peninsula. In rare situations when Leopold II enters the historical narrative he is dismissed as a reactionary, although he maintained a reputation as an enlightened and relatively liberal ruler for the majority of his rule. Especially in anglophone literature, little to no discussion of his thirty-five-year reign is available. This omission creates an unfortunate lacuna in the historiography of the Risorgimento. It is in studies of these smaller Italian states that the intricacies of statecraft, nationalism, and localism are most visible. To understand the extent of the Risorgimento's success, it …
Date:
May 2021
Creator:
Parkey, Rachel E.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Chronicle of the Online Culture Wars: Reactionary Affective Publics in Neoliberal Postmodernity
The Age of Trump witnessed the visible rise of intense culture wars and polarization in the United States. While culture wars are not new phenomena, the current iteration has digital media acting as new discursive structures and mediating battlegrounds for all sides of the cultural conflict. This project chronicles these online culture wars, demonstrating how within a neoliberal and postmodern socio-cultural condition, the rise of ambivalent, profit-driven digital technologies and platforms structure affect and mediate newly networked neo-reactionary populist (sub)cultural ideologies and discourses. The resulting online ecosystems afforded the digital formations of obscure reactionary subcultures (trolls, antifeminists, the alt-right, etc.) with particular personalized and affectively driven memetic communicative logics. These reactionary affective publics eventually began converging under perceived common ideological and social interests as online actions and reactionary discursive (re)formations and (re)networkings were catalyzed by (sub/cross)cultural conflicts and moments of sentimental activation. This led to the emergence of affectively charged and informally networked reactionary publics which began spilling out into the offline world alongside Trump's ascendancy to the White House. The increasing progressive reactions during the Trump Era also faced limitations in combatting reactionary politics due to structural dynamics of digital media and the larger culture war filtering of politics. …
Date:
May 2021
Creator:
Montalvo, David Rafael
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Queerness, Futurity, and Desire in American Literature: Improvising Identity in the Shadow of Empire
This dissertation deploys queer theory and temporality to investigate the ways in which American authors were writing about identity at the turn of the twentieth century. I provide a more expansive use of queer theory, and argue that queerness moves beyond sexual and gender identity to have intersectional implications. This is articulated in the phrase "queer textual libido" which connects queer theory with affect and temporal theories. Queerness reveals itself on both narrative and rhetorical levels, and can be used productively to show the complex navigation between individual and national identity formation.
Date:
May 2021
Creator:
Vastine, Stephanie Lauren
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Not Just About a Piece of Cloth: Three Content Analysis of an Online Anti-Mandatory Hijab Movement in Iran
This dissertation investigates the My Stealthy Freedom (MSF) movement, an online movement against mandatory hijab laws in Iran, building on two leading lead social movements' theories, political processes and framing processes theories. Study 1 explores the utility of a tactical approach for explaining the movement's pace of insurgency. I employ a conceptual repertoire focused upon the political process model's core concepts of tactical innovation and tactical adaptations, supplementing these older concepts with the more recently proposed concept of tactical freeze and a newly proposed concept of tactical hashtags that is of particular relevance to online movements. Study 2 focuses on extracting hidden patterns and emotional characteristics in the MSF movement by conducting a topic modeling study on the text appearing in the captions of the main account of the movement on Instagram. It was shown that the actions of Masih Alinejad, the founder of the movement, represented by her online activity and extracted by means of topic modeling, is directly affected by the sequence of important events happening in Iran concluding to a transformation of a social movement to political one. Study 3 models how social movements use social media in the formation of affective publics and apply this model …
Date:
May 2021
Creator:
Basmechi, Farinaz
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Ends of Smaller Worlds
The Ends of Smaller Worlds is a collection of short stories set in Indiana. The preface is about the representation of the information age using elements of dirty realism and Gothic fiction.
Date:
May 2021
Creator:
Armes, Brett
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Optical Emission Spectroscopy Monitoring Method for Additively Manufactured Iron-Nickel and Other Complex Alloy Samples
The method of optical emission spectroscopy has been used with Fe-Ni and other complex alloys to investigate in-situ compositional control for additive manufacturing. Although additive manufacturing of metallic alloys is an emerging technology, compositional control will be a challenge that needs to be addressed for a multitude of industries going forward for next-gen applications. This current scope of work includes analysis of ionized species generated from laser and metal powder interaction that is inherent to the laser engineered net shaping (LENS) process of additive manufacturing. By quantifying the amount of a given element's presence in the electromagnetic (EM) spectrum, this amount can be compared to the actual amount present in the sample via post-processing and elemental dispersive x-ray (EDX) data analysis. For this work a commercially available linear silicon CCD camera captured metallic ion peaks found within the ultraviolet (UV) region to avoid background contamination from blackbody radiation. Although the additive manufacturing environment can prove difficult to measure in-situ due to time dependent phenomena, extreme temperatures, and defect generation, OEM was able to capture multiple data points over a time series that showed a positive correlation between an element's peak intensity and the amount of that element found in the …
Date:
May 2021
Creator:
Flannery, David A. (David Andrew)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Deep Minima and Vortices for Positronium Formation in Positron-Hydrogen and Positron-Helium Collisions
This dissertation work is a study of positronium formation for positron-hydrogen and positron-helium collisions in the Ore gap (the energy region between the threshold for ground-state positronium formation and the first excitation level of the target atom) using variational K-matrices. We have fitted the K-matrices using multichannel effective range theories and using polynomials. Using the variational K-matrices and their fits, we have located zeros in the positronium-formation scattering amplitude and corresponding deep minima in the positronium-formation differential cross section. The zeros are related to the vortices in the extended velocity field associated with the positronium-formation scattering amplitude. For positron-hydrogen collisions, we have found two zeros in the positronium-formation scattering amplitude, and corresponding deep minima in the positronium-formation differential cross section, while we have obtained a zero in the positronium-formation scattering amplitude for positron-helium collisions. We have connected the zeros in the positronium-formation scattering amplitude to vortices in the extended velocity fields. Our work shows that vortices can occur for charge exchange in atomic collisions.
Date:
May 2021
Creator:
Alrowaily, Albandari Wanes
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Saudi Mothers' Experiences Maintaining Their Young Children's Arabic Language and Islamic-Saudi Identity
As more Saudi individuals temporarily settle in the United States to pursue higher education, it becomes increasingly important to understand the impact this experience has on their families. The purpose of this qualitative instrumental case study was to examine Saudi mothers' experiences and motivations after transitioning to life in the United States. The main research question was: What are Saudi mothers' experiences of supporting their children maintaining and developing Arabic language skills and Islamic-Saudi identities while they are learning English and Western culture in U.S. schools? The sub-questions of the study were: Why do Saudi mothers in this study want their children to learn the Arabic language and culture? What are their concerns? What are the challenges Saudi mothers face in socializing their children to develop their Islamic-Saudi identity? What practices do mothers use to help their children preserve their Arabic language and develop the Islamic Saudi-identity while growing up in the United States? This study was conceptually framed within the theories of parenting style and acculturation. Participants in the study were five Saudi mothers pursuing higher education in Texas. Data were collected through three semi-structured interviews and four audio journals with each participant, and a focus group with the …
Date:
May 2021
Creator:
Albakr, Ashwaq Mohammed
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Development of Potential Therapeutic Anti-Myosin S2 Peptides that Modulate Contraction and Append to the Heart Homing Adduct Tannic Acid without Noticeable Effect on Their Functions
This dissertation aimed to explore the S2 region with an attempt to modulate its elasticity in order to tune the contraction output. Two peptides, the stabilizer and destabilizer, showed high potential in modifying the S2 region at the cellular level, thus they were prepared for animal model testing. In this research, (i) S2 elasticity was studied, and the stabilizer and destabilizer peptides were built to tune contraction output through modulating S2 flexibility; (ii) the peptides were attached to heart homing adducts and the bond between them was confirmed; and (iii) it was shown that minor changes were imposed on the modulating peptides' functionality upon attaching to the heart homing adducts. S2 flexibility was confirmed through comparing it to other parts of myosin using simulated force spectroscopy. Modulatory peptides were built and computationally tested for their efficacy through interaction energy measurement, simulated force spectroscopy and molecular dynamics; these were attached to heart homing adducts for heart delivery. Interaction energy tests determined that tannic acid (TA) served well for this purpose. The stoichiometry of the bond between the TA and the modulating peptides was confirmed using mass spectroscopy. The functionality of the modulating peptides was shown to be unaltered through expansion microscopy …
Date:
May 2021
Creator:
Qadan, Motamed
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Some Names for Empty Space
Some Names for Empty Space is a collection of poems that considers how poetry and language operate to define human experience, reconciling the 'empty spaces' between the self and the abstracted variables of all things. The poems here often find their impetus in fatherhood and a parent's efforts to explain the world to a child.
Date:
May 2021
Creator:
Koch, Andrew (Poet)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Parkinson's Disease and UPDRS-III Prediction Using Quiet Standing Data and Applied Machine Learning
Parkinson's disease (PD) is a neurodegenerative disease that affects motor abilities with increasing severity as the disease progresses. Traditional methods for diagnosing PD require specialists scoring qualitative symptoms using the motor subscale of the Unified Parkinson's Disease Rating Scale (UPDRS-III). Using force-plate data during quiet standing (QS), this study uses machine learning to target the characterization and prediction of PD and UPDRS-III. The purpose of predicting different subscores of the UPDRS-III is to give specialists more tools to help make an informed diagnosis and prognosis. The classification models employed classified PD with a sensitivity of 87.5% and specificity of 83.1%. Stepwise forward regression indicated that features correlated with base of support were most useful in the prediction of head rigidity (r-square = .753). Although there is limited data, this thesis can be used as an exploratory study that evaluates the predictability of UPDRS-III subscores using QS data. Similar prediction models can be implemented to a home setting using low-cost force plates as a novel telemedicine technique to track disease progression.
Date:
May 2021
Creator:
Exley, Trevor Wayne
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Continuing the Work of Our Ancestors: Black Radical Leadership and Disruptive Pedagogies in Affirming the Well-being of Black Students
Using Black feminist thought and BlackCrit/critical race theory frameworks, this qualitative study examined Black educators' practices in addressing the behavior of their students in an urban school district. It utilized counternarratives and storytelling to explore the cultural dynamics at play between Black educators and their Black students. The Black educators in this study operated under several behavior systems, including positive behavioral interventions and supports (PBIS), socio-emotional learning (SEL), restorative practices (RPs), and zero tolerance policies (ZTPs). Such systems have been implemented based on research that they have the capacity to train Black students to make appropriate decisions regarding their behavior. These systems are also reinforced under the notion that they create learning spaces which promote academic achievement. Due to their own experiences and understanding about how institutional practices and disciplinary interventions result disproportionately in oppression and violence against Black students, these educators disrupted these practices and utilized cultural approaches that centered Black-ness. In doing so, they were able to address behavior and affirm Black students' well-being. The cultural approaches conceptualized as disruptive pedagogies include aspects of othermothering, otherfathering, critical caring, sermonizing, womanist caring, and Black masculine caring. An analysis of the stories and counternarratives illustrated that Black principals, counselors, and …
Date:
May 2021
Creator:
Foster, Marquita Delorse
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Using Machine Learning to Develop a Calibration Model for Low-Cost Air Quality Sensors Deployed during a Dust Event
Low-cost sensors have the potential to create dense air monitoring networks that help enhance our understanding of pollution exposure and variability at the individual and neighborhood-level; however, sensors can be easily influenced by environmental conditions, resulting in performance inconsistencies across monitoring settings. During summer 2020, 20 low-cost particulate sensors were deployed with a reference PM2.5 monitor in Denton, Texas in preparation for calibration. However, from mid to late-summer, dust transported by the Saharan Air Layer moved through the North Texas region periodically, influencing the typical monitoring pattern exhibited between low-cost sensors and reference instruments. Traditional modeling strategies were adapted to develop a new approach to calibrating low-cost particulate sensors. In this study, data collected by sensors was split according to a novel dust filter into dust and non-dust subsets prior to modeling. This approach was compared with building a single model from the data, as is typically done in other studies. Random forest and multiple linear regression algorithms were used to train models for both strategies. The best performing split-model strategy, the multiple linear regression models split according to dust and non-dust subsets (combined R2 = 0.65), outperformed the best performing single-model strategy, a random forest model (R2 = 0.49). …
Date:
May 2021
Creator:
Hickey, Sean
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Piano Concerto No. 1 In E Minor, by Emil Sauer: A Stylistic and Historical Argument for Its Relevance to the Piano Literature
In 1895, Emil Georg Conrad Sauer (1862-1942), a world-renowned German pianist and former student of Franz Liszt wrote his first piano concerto, which was published five years later in 1900. Sauer performed it extensively to enthusiastic crowds in Europe and the United States while on tour during the next several years. Then it vanished from the concert repertoire. It is no longer performed and has only been commercially recorded once. The purpose of this dissertation is to establish why it might have disappeared, and why there is value in bringing it back to the standard piano repertoire.
Date:
May 2021
Creator:
Ulasiuk, Dzmitry
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Validation of a survey instrument: team creativity and innovation (C/I) processes as complex adaptive systems (CAS)
Companies are becoming increasingly dependent on teams to drive creativity and innovation, which usually involves multiple teams working together to solve complex problems However, the first problem is that work teams do not always manage creativity and innovation well, especially when partnering with other work teams on highly complex projects that demand greater interdependence and collaboration, which can constitute as much as 90% of today's organizational projects. The second problem is that researchers struggle to define and measure creativity and innovation for the past decade resulting in significant variation both within and between creativity and innovation scales that have restricted meaningful theoretical discoveries and advances. The current study is significant because it introduces a novel instrument derived by John Turner that measures team creativity and innovation processes as a single unit, thereby raising the level of theoretical sophistication and leading to better practical applications. After conducting factor analysis, the current study validates six factors, including 36 indicators, and measures team creativity and innovation processes as complex adaptive systems (CAS). The current study recommends deploying the new instrument in other sectors beyond the IT sector and using multilevel techniques that include the individual and executive/organization levels of analysis.
Date:
May 2021
Creator:
Schroeder, Jae Warren
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Involving Children in the Assessment Process: Experiences of a Developmentally Appropriate Feedback Model
Assessment is a foundational part of counseling practice, which includes the process of providing assessment feedback to those tested. Millions of children are assessed across the United States through the public-school system, hospital, agency, and private practice settings. Though millions of children are assessed yearly, there has been little research surrounding providing assessment feedback with children. In this study, the author qualitatively explored children's experiences with a developmentally appropriate feedback model, the young children's assessment feedback (YCAF). Participants included ten 6 to 10-year old children, who had not previously gone through psychoeducational testing within the last year. Participants completed a battery of psychoeducational assessments and the YCAF feedback process. Data sources included session transcriptions, session observation notes, child interviews, parent interviews, and expressive arts observation notes. In order to explore the perceptions regarding the YCAF, the author utilized interpretative phenomenological analysis to understand the children's feedback experiences. Findings included the following themes: freedom for self-direction, self-concept, therapeutic relationship, affective responses of child, systemic shifts, and developmental considerations. The themes show that the children in this study saw a variety of benefits and experiences surrounding receiving their own personalized, developmentally appropriate assessment feedback.
Date:
May 2021
Creator:
Weeks, Sara Eaton
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Breeding Ecology and Migratory Connectivity of Passerines in the World's Southernmost Forests
In the extensive and remote sub-Antarctic forests of South America, birds are the dominant terrestrial vertebrates. Despite considerable efforts to understand the ecology of birds breeding in these forests, our current knowledge for many species is still incomplete. During three breeding seasons (2014 – 2017), I studied the breeding ecology of the five most abundant open-cup forest-dwelling passerines in the sub-Antarctic forest of Navarino Island, Chile (55°04′S, 67°40′W). There were differences in some of the breeding strategies used by birds breeding on Navarino Island versus conspecific populations breeding at lower latitudes. Milvago chimango was the main nest predator of open-cup nesting forest passerines, and the main cause of nest failure. In addition, I found that species built their nests in sites with higher density and taller understory; however, these two factors decreased their nest survival. This mismatch could be due to a change in depredation risk on Navarino Island, and thus, passerines breeding there may be in an ecological trap. In addition, using light-level geolocators, I determined that the migratory connectivity of Elaenia albiceps is weak as a result of the large spatial spread of individuals on the wintering ground, and that the distances among individuals on the breeding grounds …
Date:
May 2021
Creator:
Jara Millar, Rocio Fernanda
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library