Running economy(RE) is considered to be a critical factor to improve running performance. Stride frequency(SF) is an important variable for determining RE. However, no previous research has investigated the interaction between running performance and SF at the velocity of maximal oxygen uptake (VO2max). The purpose of this study was to investigate the effect of SF variations on running performance (duration/distance) at the velocity of VO2max. 14 male recreational runners completed total 7 experimental sessions with different SF conditions. The SF variations have a significant influence on running performance, especially 105% of preferred SF conditions revealed the best performance.

My project aims at understanding how recreational trails have shaped terrestrial salamanders' presence and conditional abundance in the Arcata Community Forest. In this project, I aim to answer if hiking trails affect the presence and abundance patterns of the California Slender Salamander (Batrachoseps attenuates). To address my question, I conducted my research in two months, from February to April, at the Arcata Community Forest. I conducted my research on two different trails. The first is the Short Trail (0.11 miles), and the second is Redwood Park Trail (0.28 miles). This information is crucial to the conservation and management of salamanders as they are an indicator species.

My project will directly serve the American Indian population located on the Hoopa Valley Indian Reservation. The Hoopa community suffers from numerous traumatic issues. I am fortunate to not only to be aware of the issues, but I am dedicated to create positive opportunities for the Hoopa community. My project will be creating a strong group of positive role models to help implement the Sources of Strength program with the Indigenous Youth of the Hoopa Valley Indian Reservation. Implementation of this program will decrease suicide rates and idealizations.

The Ironside Mountain Batholith located in the Western Hayfork terrane in the Klamath Mountains province represents crustal derived plutonism that pre-dates the Nevadan Orogeny by 20Ma. Redating the Ironside Mountain Batholith will be done via U-Pb laser ablation of accessory zircons, this will yield an age of crystallization thus providing an age of emplacement, and constrain the pre-Nevadan orogeny. Barnes and Petersen dated the Ironside Mountain Batholith in 1992 using U-Pb, Pb-Pb, and K-Ar dating methods, and yielded a date in the Mid Jurassic from 169 Ma (K-Ar) to 174 Ma (U-Pb), with an accepted age of 170Ma.

California is a native biodiversity hotspot, and is affected by over 60 invasive plants and animals despite aggressive state efforts to combat this problem. This project will focus on the relationship between the Himalayan blackberry and its effect on neighboring native species in the riparian areas of the Mad River and Jacoby Creek in Arcata, CA. The goal of this project is to highlight the spatial location and extent of the invasive blackberry thickets and design a potential abatement program that can be implemented at the local level. GIS will be used for mapping and special analysis.

Within any county there are economic forces that are constantly at odds with each other, and Humboldt County is no exception. Currently, it has been recognized that the skills in some of Humboldt County’s workforce are struggling to keep up with what is expected by employers. The goal of this project is to assess the needs of these potential employers, demonstrate how employers are coping with the issue, and to explore possible avenues that may improve the relationship between the potential employer’s and employee’s recruitment experience. It is the hope that informing the public of this issue may lend a hand in improving workforce readiness in Humboldt County.

Copper is used as a fungicide in the lily bulb industry and is water soluble. Previous laboratory studies have shown that acute copper toxicity in juvenile salmonids can occur at extremely low copper concentrations. These low levels of copper induce predatory avoidance behavior and the loss of olfactory sensory function, which lowers the survival rates of the juvenile salmonids. The objective of this study was to provide scientific information to determine whether the copper levels in the Smith River Plain are toxic to juvenile Coho salmon. Water quality parameters were measured to determine how lily bulb cultivation is altering the water chemistry in fish habitat.

Applying the skills I have learned in the Students For Violence Prevention program to real-world animal rights activism has already proven to be highly successful, and it is clear that the work of the SVP and CHECK IT communities may easily have their work extended into that of the animal liberation community. Through close collaboration with local farms and markets, the encouragement of more animal rights groups on Humboldt State University campus, and the formation of educational programs specifically made to reach out to youth, I believe that our students could potentially have a strong impact on the enforcement of animal welfare in Humboldt County.

The Cascadia subduction zone of the Pacic Northwest terminates in the south at the Mendocino Triple Junction, a region of elevated seismic activity. Here, tectonically driven uplift is likely responsible for the formation of Holocene-aged marine terraces. In 1992, a M 7.1 thrust mainshock and two ~M 6.5 aftershocks occurred oshore of Cape Mendocino, resulting in 1.4 meters of uplift. However, it is unknown whether these marine terraces formed due solely to large episodic coseismic uplift caused by moderately large to large magnitude earthquakes, or whether interseismic deformation plays a role in their formation. This study seeks to investigate the formation of these terraces.

It has been reported that adopting an external focus may enhance movement efficiency in individuals. The purpose of this study was to investigate the impact of adopting distal external focus of attention on muscle activity and repetitions to failure during barbell bicep curls. This study utilized three trials for three different focus conditions (control, internal, external) to measure muscle activity through electromyography and repetitions to failure. For the internal focus condition, participants were instructed to focus on their arm performing the movement. For the external focus condition, participants focused on a light attached to the barbell and pointed at the wall.