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Presenters & Abstracts: College of Natural Resources & Sciences
Visualization of Broadleaf Cattail Root Biofilm from the Arcata Marsh via Scanning Electron Microscopy
Lillian Caballero, Chemistry Undergraduate Student
- FrankCappuccioChemistryFaculty
The Arcata Marsh is responsible for treating the wastewater of the City of Arcata so it is clean enough to release into the ocean. After undergoing preliminary processing, treatment ponds are used to remove organic matter and pollutants such as nitrogen and phosphorus from wastewater, using the symbiotic work of plants like the native broadleaf cattail (Typha latifolia), and the nitrogen-fixing and nitrifying bacteria that grow on their roots, to absorb these chemicals from the water. For this experiment, we observed cattail roots and root microbiota at the inlets and outlets of the pond using scanning electron microscopy, looking at the samples with up to 5000x magnification.
WASTING DISEASE EFFECTS ON PISASTER OCHRACEUS PREY POPULATIONS
- Aria Armendariz PeavyBiologyUndergraduate Student
The presence of Sea Star Wasting Disease (SSWD) has caused fluctuations in the abundance of sea stars in the intertidal. Pisaster ochraceus is a keystone predator of the intertidal (Bates, et al., 2009) and has an increased potential to alter the food web now that SSWD has manifested itself within the population. It is a consumer of several species of chiton, snails, and limpets (Paine, et al.,1980) found in our coast’s intertidal communities. Due to the fluctuation in populations of the Pisaster ochraceus, fluctuations of predation should occur as well. Like most predator prey population models predator population size should inversely affect prey population size.
Water Adsorption/Desorption on Environmental Metal Oxides Determined by the Diffuse Refractive Infrared Fourier Transform Spectroscopy (DRIFTS) Technique
Cesar Fernandez, Chemistry Undergraduate Student
- JillMochizukiChemistryUndergraduate Student
- JackDeCorsoChemistryUndergraduate Student
Clouds affect terrestrial cooling by scattering solar radiation back to space. Particulate matter (PM) suspended in the air can initiate cloud seeding. This process is directly related to the relative humidity above the PM surface and water adsorption. In the initial stages of this process, PM collects sparingly small layers of water, known as monolayers. Details of water uptake at this level are still lacking in the literature and we desire to quantify water uptake on atmospheric PM to enhance literature values.
Water Temp. & Clarity Effects on Diving Duck Duration Under Water
- Kayli TibbsWildlifeUndergraduate Student
My research project took place at the Arcata Marsh looking at two diving duck species (Greater Scaups and Buffle Heads) and determining whether water temperature or water clarity effect the the duck's duration underwater.
Wayfinding Pilot project
- Liliana AmadorKinesiologyUndergraduate Student
- Lacey Bruh JimenezKinesiologyUndergraduate Student
- Walta TadesseKinesiologyUndergraduate Student
- Annika SlatteryRecreationalUndergraduate Student
- Mandy HackneyRecreationalUndergraduate Student
- Whitney OgleKinesiologyFaculty
- Ara PachmayerRecreationalFaculty
Our research project focuses on encouraging HSU students to become more physically active, while immersing themselves in the Arcata community. Our Wayfinder project includes a map of trails that will be highlighted by semi-permanent signage, to increase walkability and integrate HSU students into the community. With the results from a previous survey, the trails in this project preview a variety of popular places in the Arcata community to promote Arcata-HSU relations and influence students to explore their new home. In our video, we will share the trails, how we created the trails, and our plans for future engagement.
When the forest goes silent: Effects of human foot traffic on communication and diversity of passerine birds.
Ruby Andes, Wildlife Undergraduate Student
College of Natural Resources & SciencesThis project looked at the effects of human foot traffic on the vocalization frequency of passerine birds throughout three popular trails in Arcata. Results suggest pets have a greater impact on bird vocalizations than humans and that there may be differences in predator presence between trails that birds are responding to.
White-crowned sparrow song adjustments to anthropogenic noise
Lucca Faccini, Wildlife Undergraduate Student
College of Natural Resources & SciencesAn undergraduate Wildlife senior research project about understanding the relationship between white-crowned sparrow songs and anthropogenic noise.
White-crowned sparrow songs not shown to respond to anthropogenic noise pollution in coastal Humboldt County
Keagan Trischman, Wildlife Undergraduate Student
College of Natural Resources & SciencesWhite-crowned sparrows (Zonotrichia leucophrys) adjust their songs based on environmental factors. White-crowned sparrows have been observed altering their songs in response to loud anthropogenic background noise. This project sought to establish a link between ambient noise level and song variables such as minimum song frequency and frequency bandwidth.
Wildlife Management and Native American Life
- Logan CharlesWildlife ManagementUndergraduate Student
On my poster I would like to Show the intersection of the study of Native American peoples and the idea of wildlife management and resource conservation.
Wildlife-vehicle Collisions on Highway 299 East
Marco Blancas, Wildlife Undergraduate Student
College of Natural Resources & SciencesSenior project about wildlife-vehicle collisions on Highway 299 East. I hypothesized that more lanes and lower elevations have more roadkill.