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Articles 1 - 18 of 18
Full-Text Articles in Other Environmental Sciences
Exploring The Relationship Between Tree Dbh And Lichen Cover On Coast Redwood, Grace M. Personeus, Sierra Gittleman, Alisa A. Zarattini
Exploring The Relationship Between Tree Dbh And Lichen Cover On Coast Redwood, Grace M. Personeus, Sierra Gittleman, Alisa A. Zarattini
IdeaFest: Interdisciplinary Journal of Creative Works and Research from Cal Poly Humboldt
We investigated the relationship between Diameter at Breast Height (DBH) and lichen cover on coast redwood (Sequoia sempervirens) to see if larger trees had higher percentages of cover. We measured cover using 10 cover classes on the southeastern and southwestern sides of trees in a secondary growth forest. We found a significant relationship between DBH and cover, yet no significant difference between the two sides measured. We suggest that further research with a larger sample size and more varied age classes will provide further insight into the relationship.
In Memoriam: Holmes Rolston Iii, Editorial Board
In Memoriam: Holmes Rolston Iii, Editorial Board
The International Journal of Ecopsychology (IJE)
No abstract provided.
An Exploratory Attempt To Incorporate Social Criteria Into Spent Nuclear Fuel Site Screening And Relocation, Julie M. Sorfleet
An Exploratory Attempt To Incorporate Social Criteria Into Spent Nuclear Fuel Site Screening And Relocation, Julie M. Sorfleet
Cal Poly Humboldt theses and projects
Spent nuclear fuel, also known as nuclear waste, is the byproduct of nuclear power generation. The need for safe and responsible long-term storage and disposal of radioactive fuel presents significant technical and social challenges. These challenges are compounded by several factors, including the emerging nuclear renaissance in the United States, climate and coastal hazards, and the lack of consolidated interim or permanent storage. This research explores perceptions of risk, relocation, and siting spent nuclear fuel, predominantly focusing on Humboldt County, California. I used online surveys, the Analytic Hierarchy Process, and geographic information systems (GIS) analysis to inform how social and …
Pinpointing Dream Settings Onto Place Cookies
Pinpointing Dream Settings Onto Place Cookies
The International Journal of Ecopsychology (IJE)
Dream reports are short pieces of text, where a dreamer summarizes the remembered experience of nightly dreams. Dream cartography addresses especially the spatial information contained in dream reports. In this context, the current formalization of space in GIScience such as points, lines, polygons, or labels, including place names or addresses, is not sufficient for mapping dream settings. In the best case, dream reports mention place names or streets. However, usually, the perception of space in dreams is designated in terms of whether this is familiar or not, inside or outside, safe or threatening. Moreover, basic comparisons between dream settings are …
Eco-Cultural Restoration Of Mouralherwaqh: Site Description And Invasive Species Treatment Plan In King Salmon, California, Natalie Bridget Calderon, Myion Rickey, King Baptista, Owen Bardsley, Jillian Snowhook
Eco-Cultural Restoration Of Mouralherwaqh: Site Description And Invasive Species Treatment Plan In King Salmon, California, Natalie Bridget Calderon, Myion Rickey, King Baptista, Owen Bardsley, Jillian Snowhook
Undergraduate Scholarship
In July of 2022, the Wiyot Tribe bought back one of their first pieces of ancestral forest within the Mouralherwaqh "more-RAH-share-wahg" village area (Wiyot, 2022). Before this repatriation, the Tribe owned less than 1% of their ancestral lands; after, the Tribe’s land holdings increased by 10% (Reclaiming Mouralherwaqh | Humboldt NOW | Cal Poly Humboldt, 2022). Mouralherwaqh is a 46 acre coastal site located near present day King Salmon, California and has high ecological and culturally significant values (Wiyot, 2022). Prior to the change of ownership, Mouralherwaqh was privately-owned and in 2014 underwent a clear-cut timber harvest within eight-acres of …
Influence Of Elevation On Plant Survivorship In Baduwa’T Estuary, Richard Louis Toledo Jr., Celine Aguilera, Rivé Prater, Claire Durbin
Influence Of Elevation On Plant Survivorship In Baduwa’T Estuary, Richard Louis Toledo Jr., Celine Aguilera, Rivé Prater, Claire Durbin
Undergraduate Scholarship
The Baduwa’t is a river in Humboldt County, California that has been adversely impacted by agricultural operations. Disturbances from agriculture have altered the surrounding ecosystems and hydrology of the river. The conservation stewardship group, California Trout, initiated a collaborative restoration project that created a new channel and off-channel pond to provide habitat for salmonids and other native fish in the estuary. As an extension of this project, sections of the site underwent revegetation efforts. The survivorship rates of this new vegetation were lower than anticipated and we were asked by California Trout to assess if the elevation on the site …
Riparian Revegetation: Re-Indigenizing The Powers Creek Tributary Of The Baduwa’T Watershed At Blue Lake Rancheria, California, Genesis Beltran, Ruben Lopez, Ben Stock
Riparian Revegetation: Re-Indigenizing The Powers Creek Tributary Of The Baduwa’T Watershed At Blue Lake Rancheria, California, Genesis Beltran, Ruben Lopez, Ben Stock
Undergraduate Scholarship
This project focuses on the ecological and cultural restoration of Powers Creek, a tributary of the Baduwa’t watershed at Blue Lake Rancheria, California. Riparian ecosystems play a critical role in biodiversity, water quality, and climate resilience, particularly for species like salmonids reliant on cold-water refugia. The restoration efforts, guided by Indigenous knowledge, addressed the removal of non-native competitive species such as Scotch broom (Cytisus scoparius) and French broom (Genista monspessulana) – which are shown to increase wildfire severity and challenge native plant communities – in addition to freeing established plantings of vegetative competition. Through collaborative planning …
Evaluating Benthic Macroinvertebrate Populations In Response To Scouring Events In The Trinity River, Ca, Liam Hay, Michael W. O'Neil, Chloe Pieper-Wasem
Evaluating Benthic Macroinvertebrate Populations In Response To Scouring Events In The Trinity River, Ca, Liam Hay, Michael W. O'Neil, Chloe Pieper-Wasem
Environmental Science & Management Senior Capstones
River systems across California have been impacted by appurtenant structures such as dams and diversions. These structures have had an adverse impact on Benthic invertebrate (BMI) communities by regulating river systems and changing the natural hydraulic pulses that follow seasonal precipitation. Benthic invertebrates are a critical food resource for salmonids and serve as an indicator of ecosystem health. Our study was interested in seeing the effects of scouring events on BMI in the Trinity River of Trinity County, C.A. Following a large precipitation event that occurred in the region in December 2022, an influx of water entered the river through …
Carnivore And Ungulate Occurrence In A Fire-Prone Region, Sara J. Moriarty-Graves
Carnivore And Ungulate Occurrence In A Fire-Prone Region, Sara J. Moriarty-Graves
Cal Poly Humboldt theses and projects
Increasing fire size and severity in the western United States causes changes to ecosystems, species’ habitat use, and interspecific interactions. Wide-ranging carnivore and ungulate mammalian species and their interactions may be influenced by an increase in fire activity in northern California. Depending on the fire characteristics, ungulates may benefit from burned habitat due to an increase in forage availability, while carnivore species may be differentially impacted, but ultimately driven by bottom-up processes from a shift in prey availability. I used a three-step approach to estimate the single-species occupancy of four large mammal species: mountain lion (Puma concolor), coyote …
Merging Art And Science: Lessons Learned From An 'Otterly' Different Case Study, Jess Barger
Merging Art And Science: Lessons Learned From An 'Otterly' Different Case Study, Jess Barger
Cal Poly Humboldt theses and projects
Environmental art projects use artistic interpretation to tell stories about the natural world, often with the hope that they will inspire awareness or behavioral change. In 2019, an art project to raise awareness about North American river otters (Lontra canadensis) was launched in Northern California, using over 100 river otter sculptures painted and decorated by local artists. Through a mixed-methods approach, I quantified the initial outcomes of the project, North Coast Otters, as well as the response to the project by the public on social media as a case study in environmental art and outreach. Participating artists’ interviews and …
Identification Of Mined Areas That May Contribute To Water Quality Degradation At Hobet Coal Mine, West Virginia, Brian P. Murphy
Identification Of Mined Areas That May Contribute To Water Quality Degradation At Hobet Coal Mine, West Virginia, Brian P. Murphy
IdeaFest: Interdisciplinary Journal of Creative Works and Research from Cal Poly Humboldt
No abstract provided.
Exploring Community Knowledge And Perceptions Of Flooding And Sea-Level Rise In King Salmon, California, Kristina Kunkel
Exploring Community Knowledge And Perceptions Of Flooding And Sea-Level Rise In King Salmon, California, Kristina Kunkel
Cal Poly Humboldt theses and projects
The coastal community of King Salmon, California could be at the highest risk of relative sea-level rise on the entire U.S. West Coast. In 2019, the community already experiences severe flooding at least annually and may be regularly inundated as early as 2050. Until this study, there had been no documented effort to reach out to the community to show them future sea-level rise projections, understand the context of life in King Salmon, and listen to their reactions and perceptions. This research utilized a mixed methods grounded theory approach integrating semi-structured interviews with King Salmon stakeholders, qualitative data analysis, public …
Assessing Spatio-Temporal Patterns Of Forest Decline Across A Diverse Landscape In The Klamath Mountains Using A 28-Year Landsat Time-Series Analysis, Drew S. Bost
Cal Poly Humboldt theses and projects
Rates of tree mortality in California and the Pacific Northwest have greatly increased in recent years, driven largely by pest and pathogen outbreaks as well as the effects of hotter, warmer droughts. While there have been a multitude of regional-scale assessments of mortality and forest decline, landscape-level studies are necessary to better identify forests that are most vulnerable to decline and to anticipate future changes. This need is particularly notable in the remote and little-studied mountains of northwest California, which are renowned for their diverse, heterogeneous vegetation types. A recent observation of elevated levels of Shasta red fir (Abies …
Low Income Housing Energy Efficiency Improvement Program For The Yurok Tribe Of Northern California, Keivan Branson
Low Income Housing Energy Efficiency Improvement Program For The Yurok Tribe Of Northern California, Keivan Branson
Cal Poly Humboldt theses and projects
Housing on the Yurok reservation in California is a major concern for the local Tribal Government. This report details a study of the energy situation for housing of the Yurok Tribe to provide a framework for implementing housing energy efficiency to benefit low-income members of the Tribal community residing in substandard housing. The report briefly details the history of the reservation as it pertains to the current housing situation, as well as the authors personal context of living for 16 years in the reservation town of Klamath, CA. The analysis draws on information obtained from mixed methods, including information collected …
Post-Fire Regeneration And Fuel Succession Patterns In Hesperocyparis Bakeri Forests, Bret Anthony Mcnamara
Post-Fire Regeneration And Fuel Succession Patterns In Hesperocyparis Bakeri Forests, Bret Anthony Mcnamara
Cal Poly Humboldt theses and projects
Climate change is predicted to cause widespread redistribution of suitable tree habitats, as well as increase the size and frequency of wildfires in the western United States during the forthcoming century. Rare serotinous conifers may have heightened sensitivity to the impacts of both fire regime and climate shifts for multiple reasons. First, the rapid spatial rearrangement of suitable habitat will disproportionately affect trees with constrained seed dispersal capabilities, and limited dispersal is a trait associated with some genera of serotinous trees. Second, a number of serotinous conifers depend on fire disturbances for regeneration, though with the expected increase in annual …
Persistence Of Stream Restoration With Large Wood, Redwood National And State Parks, California, Diedra L. Rodriguez
Persistence Of Stream Restoration With Large Wood, Redwood National And State Parks, California, Diedra L. Rodriguez
Cal Poly Humboldt theses and projects
The conservation and recovery of anadromous salmonids (Oncorhynchus sp.) depend on stream restoration and protection of freshwater habitats. In-stream large wood dictates channel morphology, increases retention of terrestrial inputs such as organic matter, nutrients and sediment, and enhances the quality of fish habitat. Historic land use/land cover changes have resulted in aquatic systems devoid of large wood. Restoration by placement of large wood jams is intended to restore physical and biological processes. An important question for scientists and restoration managers, in addition to the initial effectiveness of restoration, is the persistence and fate of large wood installations. In this …
Multiscale Habitat Suitability Modeling For Canary Rockfish (Sebastes Pinniger) Along The Northern California Coast, Portia N. Saucedo
Multiscale Habitat Suitability Modeling For Canary Rockfish (Sebastes Pinniger) Along The Northern California Coast, Portia N. Saucedo
Cal Poly Humboldt theses and projects
Detailed spatially-explicit data of the potential habitat of commercially important rockfish species are a critical component for the purposes of marine conservation, evaluation, and planning. Predictive habitat modeling techniques are widely used to identify suitable habitat in un-surveyed regions. This study elucidates the predicted distribution of canary rockfish (Sebastes pinniger) along the largely un-surveyed northern California coast using data from visual underwater surveys and predictive terrain complexity covariates. I used Maximum Entropy (MaxEnt) modelling software to identify regions of suitable habitat for S. pinniger greater than nine cm in total length at two spatial scales. The results of …
Sedimentation Risk Assessment Using Satellite And Geospatial Data In Lagoa Feia, Brazil, Ualas B. Rohrer, Buddhika D. Madurapperuma
Sedimentation Risk Assessment Using Satellite And Geospatial Data In Lagoa Feia, Brazil, Ualas B. Rohrer, Buddhika D. Madurapperuma
IdeaFest: Interdisciplinary Journal of Creative Works and Research from Cal Poly Humboldt
No abstract provided.