Digital Commons Network^™

Enrichment-Planting With Pines Alters Fuel Amount And Structure In Endangered Araucaria Araucana Forests In Northwestern Patagonia, Argentina, Sofia Cingolani, Ignacio A. Mundo, Ivan Barbera, Andrés Holz, Thomas T. Veblen, Juan Paritsis

Geography Faculty Publications and Presentations

The introduction of non-native tree species for large-scale afforestation may alter the fire regime of native ecosystems by modifying fuel proprieties. We quantified changes in fuel abundance and structure resulting from the establishment of commercial Pinus spp. plantations in Araucaria araucana ecosystems in northwestern Patagonia, Argentina. Specifically, we assessed the amount, distribution, and condition (live/dead) of surface and standing fine fuel in A. araucana stands with mature pine plantations (i.e. > 20 cm dbh) and in stands dominated only by A. araucana (control). Our study shows that both types of stands are prone to wildfires, but pine plantations have fuel characteristics …

Information Literacy In English-Language Higher Education Teaching Journals: A Review, Jennifer Masunaga, Lanyi Peng, Tiffanie Ford-Baxter, Kendall Faulkner

Communications in Information Literacy

Wider visibility of information literacy (IL) outside of the library and information science (LIS) field is important to the success of IL instruction, learning, and research. The development and major updates of several information literacy documents in the past decade evidence the changing landscape of IL research, but how these changes have impacted other disciplines remains to be seen. To aid in this discussion, this article examines a wide range of higher education teaching journals to expand on Badke's (2011) work, “Why Information Literacy is Invisible.” Specifically, this study examines articles published in 30 general higher education and 32 …

Quality Matters: Using A Peer-Review Process To Create A Cohesive Multi-Campus Library Online Instruction Program, Stephanie Jacobs, Maryellen Nash, Theresa Burress, Kaya Van Beynen

Communications in Information Literacy

Librarians within a newly combined, multi-campus research and instruction department undertook a large-scale peer review of their online instruction program and materials. This collaborative assessment project sought to unite three library departments with a cohesive vision for self-guided online library instruction while establishing consistent quality standards and building a shared sense of ownership and accomplishment. These goals were achieved through a collaborative assessment of online instructional modules that included the development of a novel rubric based on the Quality Matters Course Design Standards. This article reports on that ongoing journey, as well as the goals, challenges, and outcomes of the …

In The Hot Seat: Acquiring Kernel Density Heat Map Design Guidance Through Delphi And Survey Methods, Lauren Eileen Mckinney-Wise

Dissertations and Theses

Kernel density heat maps have emerged as a new, popular thematic map type. Yet, unlike other thematic map types, little if any published guidance exists for effective heat map design. This is significant because maps are highly persuasive objects that are often utilized to communicate important information, but maps can also be misleading and misunderstood. Therefore, proper guidance for heat map creation is critical for cartographers to create maps that convey geographic information successfully.

To address this literature gap, I used a modified Delphi method and an online survey to investigate several questions, including understanding what cartographic experts think are …

Uncovering The Nuance And Complexity Of Gentrification In Asian Immigrant Communities: A Case Study Of Koreatown, Los Angeles, Seyoung Sung

Dissertations and Theses

This dissertation examines the nuances and complexities of gentrification in Asian immigrant communities in transit-oriented neighborhoods of Los Angeles, with a particular focus on commercial changes. Utilizing a mixed-methods approach, the study aims to clarify how gentrification uniquely affects these communities, both in terms of residential and commercial aspects. The primary question of this research is: How do gentrification dynamics and consequences manifest uniquely in Asian immigrant communities?

The research unfolds in two stages. First, the study begins with a comprehensive analysis of neighborhood changes in Asian immigrant communities focusing on demographic dynamics, housing shifts, and commercial trends. The analysis …

Postfire Effects And Regeneration Patterns In Araucaria-Nothofagus Forests In South-Central Chile, Paola A. Arroyo-Vargas

Dissertations and Theses

Fire regime shifts due to climate and land use changes are threatening ecosystems worldwide, affecting their capacity to recover after severe wildfires. Increase of fire frequency, severity and intensity may severely affect forest ecosystems whose fire regimes have been characterized by infrequent stand-replacing fires. The temperate forests of southern South America, specifically the Andean temperate forests dominated by the conifer Araucaria araucana and the angiosperm species from Nothofagus genus, have evolved with less fire pressure, where severe wildfires may happen after decades or centuries. Recent severe and short-interval fires exacerbated by warmer and drier climate conditions have affected these forests, …

The Effects Of Salt Marsh Restoration On The Hydrology Of Salt Marsh Channels, Isis Kontas

University Honors Theses

Salt marshes produce many ecosystem services, from water purification to protection from hurricanes. Despite their benefits, salt marshes have been impacted negatively by human activities. There are many salt marsh restoration projects that intend to bring back all ecological functions and services. Quantifiable measurements are needed to evaluate the effectiveness of such restoration efforts. Earlier work by Reagan Thomas demonstrated what happens to the hydrology of salt marsh channels when they are adjacent to restored salt marshes. This study builds on Thomas’ work and uses the sinuosity of channels as a quantitative, representative metric of salt marsh hydrology restoration effectiveness. …

People, Place, And Planet: Global Review Of Use-Inspired Research On Water-Related Ecosystem Services In Urban Wetlands, Jason Sauer, Heejun Chang

Geography Faculty Publications and Presentations

With climate change and urbanization, city planners and developers have increasing interest and practice in constructing, restoring, or incorporating wetlands as forms of green infrastructure to maintain water-related ecosystem services (WES). We reviewed studies that valued in functional or monetary units the water regulation and purification services of urban wetlands around the globe. We used the adaptive management cycle (AMC) as a heuristic to determine the step that a study would represent in the AMC, the connections between the cycle steps that were used or considered, and the stakeholders involved. Additionally, we identified the social, ecological, and/or technological dimension(s) of …

Relating Social, Ecological, And Technological Vulnerability To Future Flood Exposure At Two Spatial Scales In Four U.S. Cities, Jason Sauer, Arun Pallathadka, Idowu Ajibade, Marta Berbés-Blázquez, Heejun Chang, Elizabeth M. Cook, Nancy B. Grimm, David Iwaniec, Robert Lloyd, Gregory C. Post

Geography Faculty Publications and Presentations

Flooding occurs at different scales and unevenly affects urban populations based on the broader social, ecological, and technological system (SETS) characteristics particular to cities. As hydrological models improve in spatial scale and account for more mechanisms of flooding, there is a continuous need to examine the relationships between flood exposure and SETS drivers of flood vulnerability. In this study, we related fine-scale measures of future flood exposure—the First Street Foundation's Flood Factor and estimated change in chance of extreme flood exposure—to SETS indicators like building age, poverty, and historical redlining, at the parcel and census block group (CBG) scales in …

Exploring The Role Of Information Literacy Instruction In Student Co-Creation Of Community-Based Research Products, Robyn Hall

Communications in Information Literacy

Supported by institutional commitments to community engagement, undergraduate students at universities across North America are participating in community-based research projects. These experiential learning activities allow students to collaborate with community partners to address issues in their communities, often resulting in co-creating research products that seek to have a real-world impact. This article reports on ways that academic librarians can support students engaged in these activities, informed by interview data gathered from university administrators and faculty members from across Canada with expertise in conducting and overseeing students' participation in research connected to university–community partnerships. This growing area of scholarly activity in …

Critical Consciousness & The Rural-Urban Divide, Kendall O'Rorke

University Honors Theses

This study investigated the relationship between conceptions of Critical Consciousness (CC) and urban vs. rural geographic location type. Participants (N = 31) completed the Short Critical Consciousness Scale (CCS-S), and 25 additional questions regarding potential location-based idealogical differences. No measurable differences were found regarding differences in conceptions of critical consciousness (using CCS-S scores) based on rural-urban location, however, other responses supported some current research regarding political typology. Additional research is needed to fully understand this topic.

International Labour Migration, Farmland Fallowing, Livelihood Diversification And Technology Adoption In Nepal, Karki Nepal, Mani Nepal, Randall Bluffstone

Economics Faculty Publications and Presentations

This article investigates the effect of temporary international labour migration on farmland fallowing, adoption of agricultural intensification technologies and livelihood diversification. Using nationally representative data, combined with empirical methods that allow causal inference, the authors find that households with international migrants are over 50 per cent more likely (based on propensity score matching estimates) to have fallow land than those without. Temporary international migration promotes the adoption of some agricultural intensification technologies and causes rural households to diversify their livelihoods. Land fallowing may increase food insecurity, while agricultural intensification may improve it, for an uncertain net effect.

Science Literacy And Popular Culture: Forensic Anthropology In Application And Fiction, Autumn L. Baker

PSU McNair Scholars Online Journal

This exploratory research examines the discussion of “race” in popular cultural media in a forensic anthropological context. The TV series Bones was used as a sample site for a cultural comparative analysis. This research critically compares popular culture understandings of “race” or ancestral heritage as depicted in Bones with a specific, newly developed method that forensic anthropologists apply in actual lab procedures in combination with other methods to determine ancestral heritage as depicted in textbooks. This research project has two phases. The first phase is a media analysis of discussions and depictions of ancestral heritage in episodes of Bones; the …

The Establishment And Shaping Of The Education System And National Identity In Manchukuo, Tianyang Lei

Dissertations and Theses

This thesis studies the education system and national identity of Manchukuo the nationstate (1932-1945). In September of 1932, the Japanese army staged the "Mukden Incident," a bombing of a railway line near Shenyang that was used as a pretext for the invasion of Manchuria. Following the incident, the Japanese established the state of Manchukuo with the last emperor of China, Puyi, as its nominal head of state. The establishment of Manchukuo marked the beginning of Japan's aggressive expansion in Asia and its militarization of the region. It also marked the start of Japan's effective control over large portions of Northeast …

Portland’S Response To The Western North American Heatwave: A Brief Report, Athanasios Burlotos, Caleb Dresser, Vivek Shandas

Geography Faculty Publications and Presentations

Background:

In June of 2021, a heatwave resulted in high mortality across the Pacific Northwest region. The city of Portland, Oregon, had many advantages: emergency response personnel, science-based policies, political support for climate change adaptation, and collaboration among municipal, county, state, and federal authorities. Though the city’s response likely prevented many deaths, heat-related mortality was high.

Methods:

This study presents a retrospective case analysis of the 2021 Western North American Heatwave in Portland, Oregon. Specifically, the study examines the limitations of current heatwave response paradigms by means of a narrative review of the heatwave response and impacts.

Results:

Most deaths …

Editorial: Solutions To Water Crises (Related To Actual Interventions), Jenia Mukherjee, Saket Pande, Melissa Haeffner, Sara Marks, Pieter Van Oel, Matthew Sanderson, Adriana Allen

Environmental Science and Management Faculty Publications and Presentations

Water science has become “pluralistic” (Evers et al., 2017) to collectively (yet differently) understand complex water systems with promising combinations of compatible and complementary disciplines. The contemporary context of water science discusses the more severe water-society challenges of the Anthropocene. Yet, the conversation is not definitive; indeed, there are unending debates between quantitative and qualitative research approaches including methodological choices and accuracies along questions of scales, themes, and politics of funding. Transdisciplinary applications and cross-sectoral engagements offer solution-oriented water just trajectories – scientists, practitioners, and user groups designing and deploying “solutions” related to actual interventions in addressing water …

Subseasonal Clustering Of Atmospheric Rivers Over The Western United States, Emily Slinskey, Paul Loikith, Naomi Goldenson, Jesse Norris, Jesse Hall

Geography Faculty Publications and Presentations

The serial occurrence of atmospheric rivers (ARs) along the US West Coast can lead to prolonged and exacerbated hydrologic impacts, threatening flood-control and water-supply infrastructure due to soil saturation and diminished recovery time between storms. Here a statistical approach for quantifying subseasonal temporal clustering among extreme events is applied to a 41-year (1979–2019) wintertime AR catalog across the western United States (US). Observed AR occurrence, compared against a randomly distributed AR timeseries with the same average event density, reveals temporal clustering at a greater-than-random rate across the western US with a distinct geographical pattern. Compared to the Pacific Northwest, significant …

Webinar: Understanding Connections Between Mobility, Transportation, And Quality Of Life In Refugee Communities In Tucson, Arizona, Orhon Myadar

TREC Webinar Series

While resettlement typically allows millions of forcibly displaced persons to escape from unpredictable and often dangerous conditions of displacement, most refugees experience an array of challenges after resettlement as they integrate into new communities. Many of these challenges are related to their ability to get to and from places that are important to their sense of autonomy and well-being, including sites of education, employment, worship and medical care. In this talk, Dr. Myadar will present some of the key findings of her collaborative research project on mobility-related challenges faced by refugees in Tucson, Arizona after their resettlement. This webinar is …

The House Full Of Otters: Recalling Human–Sea Otter Relationships On An Indigenous Oregon Coast, Douglas Deur, Peter Hatch, Hannah Wellman

Anthropology Faculty Publications and Presentations

Sea otters have held a special role in the cultural, spiritual, and economic life of Native American communities throughout recorded time. Along the coast of what is now Oregon, Native oral traditions recall a rich history of human encounters with sea otters, and speak of the species’ ubiquity, significance, and sentience. Native people also hunted sea otters, fashioning their uniquely dense fur into chiefly robes and using the pelts in ways central to community life — presaging the species’ later role in the global fur trade. Archaeological evidence of sea otter use can be found in sites of diverse antiquity …

The Invisible Slaughter: Local Sea Otter Hunters On The Oregon Coast, Cameron La Follette, Richard Ravalli, Peter Hatch, Douglas Deur, Ryan Tucker Jones

Anthropology Faculty Publications and Presentations

Most accounts of the extirpation of sea otters from the Oregon coast focus on the well-documented international maritime fur trade of the late eighteenth and early nineteenth centuries. The historical record shows, however, that sea otters persisted much later. The final extirpation in Oregon occurred as a result of household-scale hunting by Native Americans and Euro-American settlers, from the mid-nineteenth century until around 1910. Especially on the south coast, a cottage industry of sea otter hunting flourished for decades — a pattern similar to the neighboring states of Washington and California. This article summarizes this long-ignored history, drawing from the …

Supporting Care Partners Of People Living With Dementia, Sherril Gelmon, Walter Dawson, Jenn Hollandsworth Reed

OHSU-PSU School of Public Health Faculty Publications and Presentations

This report addresses the need to better support care partners of people living with dementia, including a proposal for a new Dementia Care Partner Hub (the “Hub”) that will facilitate care partner access to information, supports, services and activities. This work is the culmination of the “Supporting Care Partners of People Living with Alzheimer’s Disease and Related Dementias (ADRD)” project funded by the Portland State University Institute on Aging’s “Gerontology Education & Research Initiative” (GERI) faculty grant, conducted from June 2022 to October 2023. The project focused on addressing concerns and needs of care partners and people living with dementia …

Place For Sociohydrology In Sustainable And Climate-Resilient Agriculture: Review And Ways Forward, Soham Adla, Mohammad Faiz Alam, Melissa Haeffner, Murugesu Sivapalan

Environmental Science and Management Faculty Publications and Presentations

Given the increasing demand for high-quality food and protein, global food security remains a challenge, particularly in the face of global change. However, since agriculture, food and water security are inextricably linked, they need to be examined via an interdisciplinary lens. Sociohydrology was introduced from a post-positivist perspective to explore and describe the bidirectional feedbacks and dynamics between human and water systems. This review situates sociohydrology in the agricultural domain, highlighting its contributions in explaining the unintended consequences of water management interventions, addressing climate change impacts due to/on agriculture and incorporating human behaviour into the description of agricultural water systems. …

Love Letters For Liberatory Futures, Jessica Rodriguez-Jenkins, Roberta Hunte, Lakindra Mitchell Dove, Antonia R.G. Alvarez, Alma M. O. Trinidad, Gita Mehrotra

School of Social Work Faculty Publications and Presentations

This collection of letters serves to explore the narratives of a collective of women of color in academia by examining individual, collective, spiritual, and institutional strategies for surviving and transforming our institutional spaces and the ways that White Supremacy has shaped our journeys. Multiple perspectives are viewed, and we have written to our children, our future social work students, our future selves, our BIPOC faculty siblings, and our feared enemies to envision and embody more liberatory futures.

Keywords: liberation, academia, BIPOC faculty, institutional racism, White Supremacy

Disappeared Streams And Flood Risk In Atlanta, Georgia, Baltimore, Maryland, Phoenix, Arizona, And Portland, Oregon, Gregory Chrisopher Post

Dissertations and Theses

Many urban streams have been moved, culverted, buried, or "disappeared" as urban infrastructure was constructed. This loss of natural streams provided land for urban development, but as climate change increases the frequency and severity of extreme weather events, these disappeared stream areas could threaten homes and other infrastructure with increased flood risk. This study developed spatial data layers to identify many of these lost streams for Atlanta, Georgia, Baltimore, Maryland, and Phoenix Arizona, using historical maps to find streams previously visible that disappeared by the present day. This process used the oldest available georeferenced maps from the United States Geological …

Left Out To Dry: Understanding The Social Experiences Of Ground Depletion In Washington State's Columbia River Basin, Alexis Lisandro Guizar-Diaz

Dissertations and Theses

Millions of water wells worldwide risk running dry due to overpumping, drought, and climate change. This study adopts a political ecology framework to investigate how economic structures and power dynamics shape the effects of groundwater depletion in a highly impacted region. It is based on qualitative fieldwork conducted in the Odessa Aquifer region of Washington State. This agriculturally productive region has experienced severe groundwater depletion, endangering communities and threatening water supplies for many, as agribusiness has intensively used deep water wells to irrigate high-value crops. This research addresses three key questions: 1) How do residents and households excluded from irrigation …

Community Adaptations To Wildfire Risk In Central Oregon, Usa: An Empirical Study Of Inclusionary Practices In Collaborative Wildfire Risk Mitigation, Liam Resener

Dissertations and Theses

Adverse impacts of wildfire in Western North America have become increasingly present through the 21^st century, driven by landscape changes imposed by colonists in the 19^th and 20^th centuries. Community adaptations to wildfire will be necessary through the 21^st century to restore landscapes and protect the safety and livelihoods of people who live in at-risk areas. Wildfire risk extends across countless environmental and social systems, and individuals have competing ideas about what constitutes that risk and how to best adapt to it. As resources are being allocated to community adaptations, important questions emerge about the values …

Exploring Nonprofit Views On Water Management And Conservation Strategies, Jillian Marie Farley

Dissertations and Theses

Valuing water resources presents a multitude of methodological and theoretical challenges, including economics, biodiversity, and cultural significance. Information is not readily available on the individuals working every day on water resource management and how they navigate such a complex topic. This project is designed to help all parties better understand the opinions of individuals working for nonprofit organizations and Watershed Councils in the State of Oregon about current methods of water resource conservation. The results reflect respondents’ personal views on the process and practices of valuing water and are designed to prompt deeper discussions between the organizations, communities, and policymakers. …

Structure-From-Motion Derived Snow Cover In Burned Forests Of The Western Oregon Cascades, Siobhan Ciafone

Dissertations and Theses

Forest fire occurrence in the western US has increased rapidly since the 1980s, and most western US fires occur in the seasonal snow zone. Burned forests influence snow accumulation and melt patterns for years following fire, and understanding drivers of variability in snow cover across a burned landscape at the basin-scale is necessary for accurate hazard prediction and water resource forecasting. Basin-scale surveys of snowpack are possible with remote sensing, but accurate sensing methods such as Light Detection and Ranging (LiDAR) are often cost-prohibitive. In the last decade, structure-from-motion (SfM), an optical remote sensing technique, has emerged as an affordable …

Lightning-Ignited Wildfires In The Western United States: Ignition Precipitation And Associated Environmental Conditions, Dmitri Alexander Kalashnikov, John T. Abatzoglou, Paul Loikith, Nicholas J. Nauslar, Yianna Sotirios Bekris, Deepti Singh

Geography Faculty Publications and Presentations

Cloud-to-ground lightning with minimal rainfall (“dry” lightning) is a major wildfire ignition source in the western United States (WUS). Although dry lightning is commonly defined as occurring with <2.5 mm of daily-accumulated precipitation, a rigorous quantification of precipitation amounts concurrent with lightning-ignited wildfires (LIWs) is lacking. We combine wildfire, lightning and precipitation data sets to quantify these ignition precipitation amounts across ecoprovinces of the WUS. The median precipitation for all LIWs is 2.8 mm but varies with vegetation and fire characteristics. “Holdover” fires not detected until 2–5 days following ignition occur with significantly higher precipitation (5.1 mm) compared to fires detected promptly after ignition (2.5 mm), and with cooler and wetter environmental conditions. Further, there is substantial variation in precipitation associated with promptly-detected (1.7–4.6 mm) and holdover (3.0–7.7 mm) fires across ecoprovinces. Consequently, the widely-used 2.5 mm threshold does not fully capture lightning ignition risk and incorporating ecoprovince-specific precipitation amounts would better inform WUS wildfire prediction and management.

Canary In The Forest?—Tree Mortality And Canopy Dieback Of Western Redcedar Linked To Drier And Warmer Summers, Robert A. Andrus, L. R. Peach, A. R. Cinquini, Joseph Hulbert, J. T. Yusi, Andres Holz, M. Fischer, Kevan B. Moffett, Multiple Additional Authors

Geography Faculty Publications and Presentations

Aim: Forest dieback is increasing from unfavourable climate conditions. Western redcedar (WRC)—a culturally, ecologically and economically important species—has recently experienced anomalously high mortality rates and partial canopy dieback. We investigated how WRC tree growth and dieback responded to climate variability and drought using tree-ring methods. Location: Pacific Northwest, USA. Taxon: Western redcedar (Thuja plicata). Methods: We collected tree cores from three tree health status groups (no canopy dieback, partial canopy dieback, and dead trees) at 11 sites in coastal (maritime climate) and interior (continental climate) WRC populations. From growth rates, we computed four growth indices that assessed the resilience to …