Effects of moonlight illumination on animal-vehicle collisions

Sidney Wells, Wildlife Undergraduate Student

College of Natural Resources & Sciences

Effects of moonlight illumination on animal-vehicle collisions

Effects of Substrate Rugosity on Abundance and Gonad Condition of Purple Urchins (Strongylocentrotus purpuratus) in the Intertidal Zone

Victoria Johnson, Biological Sciences Undergraduate Student

College of Natural Resources & Sciences

In northern California, purple urchin (Strongylocentrotus purpuratus) populations have exploded, leading to an invasion of the intertidal zone with potential consequences for those communities. We aimed to determine if there was a relationship between surface rugosity and urchin abundance and condition in this recently invaded habitat. We found that urchins took advantage of any intertidal habitat, as abundance was independent of surface rugosity. However, surface rugosity was related to urchin condition, with urchins on rougher surfaces in better condition than those on other surfaces. Rocky intertidal surfaces may therefore provide refugia for overabundant subtidal urchin populations.

Effects of tidal conditions on egret foraging behavior in Arcata Marsh

Tania Estrada Rodriguez, Wildlife Undergraduate Student

College of Natural Resources & Sciences

This study examines how tidal levels impact egret foraging behavior in the Arcata Marsh and Wildlife Sanctuary (AMWS) in Humboldt County, California. This study aims to expand upon the limited existing research on the relationship between tidal conditions and egret foraging and to determine the effects of tide levels on egret foraging behavior. Additionally, the study assesses the influence of temperature, overcast, tide, and waterfowl presence on egret foraging behavior and measures egret strike rate and success as parameters for assessing the overall impact of high and low tides on their foraging behavior.

Engineering Endothelial Cells to Treat Pulmonary Arterial Hypertension

Heather Jackson-Pease, Biological Sciences Undergraduate Student

College of Natural Resources & Sciences

Gene editing with CRISPR/Cas9 and AAVs has been a modern technology that has greatly influenced biological sciences. Coupling the editing technology of CRISPR and AAVs could lead to treating the underlying causes of pulmonary arterial hypertension(PAH). PAH is a progressive disease in your lungs that causes vasoconstriction and decreased blood flow, which can lead to heart failure. Placing a stent in the pulmonary artery, with endothelial cells engrafted on it, that overexpresses the important regulatory factors eNOS and VEGF, may lead to an increase in reendothelialization and vasodilation of the pulmonary artery.

Enhanced Learning in Biochemistry Using the Protein Data Bank and 3D Molecular Modeling in ChimeraX

Frank Cappuccio, Chemistry Faculty

College of Natural Resources & Sciences

The Protein Data Bank (PDB) is a repository of atomic level resolution biological structures determined by researchers around the world. Protein macromolecular structures have become an essential tool for biotechnology fields. They are used to understand the chemical and biological processes in living systems and disease, and for precise drug design. Here students utilized the molecular modeling software UCSF ChimeraX to visualize 3D PDB protein structures of their choice. Students produced Quad Chart presentations and printed 3D models to allow for deep learning in protein structure.

Environmental Monitoring for Tests of Gravity Below Fifty Microns

Tanner Hooven, Physics & Astronomy Undergraduate Student

College of Natural Resources & Sciences

Reliable measurements of gravitational forces at scales smaller than a centimeter carry significant challenges. The non-gravitational forces that are generally negligible at the scale of everyday objects have a much more substantial effect in the sub-centimeter regime. Due to the nature of precision required in measuring micron-scale gravitational forces and the inherent weakness of gravity, it is important to record, model, and possibly suppress environmental effects in and around the experiment that may affect measurements. Recently, members of the Cal Poly Gravitational Physics Lab have focused on developing these environmental instruments and models to ensure high levels of precision.

Evaluation of a Novel Cellulase to Optimize Biofuel Production

Amanda Ratcliff, Biological Sciences Undergraduate Student

College of Natural Resources & Sciences

Cellulose waste is utilized for biofuels, however cellulase enzymes are a limiting factor. We sought to evaluate a novel cellulase identified in cow rumen metagenomic analysis provided by the Joint Genome Institute. We performed DNA analysis, SDS PAGE, and a cellulase activity assay to theoretically calculate and compare to experimental molecular weight; and determine cellulase activity. The theoretical molar mass (64.9 kD) strongly correlates to the experimental molar mass (60.7 kDa). Purified cellulase has an activity, 6.27 cm2/ug, 6x higher versus commercial cellulase enzyme. These results have positive implications for the creation of biofuels from agricultural waste products.

Examining the relationship between zooplankton abundance and piscivorous bird richness at the Arcata Mars

Aminah Aryan, Wildlife Undergraduate Student

College of Natural Resources & Sciences

This study examined the relationship between zooplankton abundance and piscivorous bird richness at the Arcata Marsh

Exploratory Study for Indoor Turf Field Facilities on the North Coast

Julia Hohman, Kinesiology & Recreation Administration Undergraduate Student

College of Professional Studies

This poster describes an exploratory study that was completed this semester to explore the question of whether or not there is a need for an indoor field on the North Coast that would provide a solution that allows organized field sports to continue activities during adverse weather conditions in the low-income areas of Humboldt and Del Norte counties. Gathering data for research was carried out by talking to local individuals involved in recreational facilities development and members of sports associations. It was written to raise awareness of the need for such a space and in the hope of getting the community a step closer to figuring out how to provide such a recreation facility.

Exploring the Ultrastructure of Rust Fungus Calyptospora columnaris

Michaela Regi, Biological Sciences Undergraduate Student

College of Natural Resources & Sciences

Rust fungi are obligate plant parasites that exhibit multiple life stages with drastically different physical features depending on the host it infects. While studies in the classification of rust fungi are actively debated, the ultrastructure of this particular rust fungus has been vastly understudied. Using SEM and TEM, images were taken of Calyptospora columnaris to elucidate the fine features of these different stages in an attempt to give this fungus a more comprehensive visual representation.