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Full-Text Articles in Life Sciences

Census And Mapping Of Chorro Creek Bog Thistle In Reservoir Canyon, San Luis Obispo, Ca, Tyler Michael Lutz Dec 2013

Census And Mapping Of Chorro Creek Bog Thistle In Reservoir Canyon, San Luis Obispo, Ca, Tyler Michael Lutz

Biological Sciences

Chorro Creek bog thistle (Cirsium fontinale var. obispoense) is a federally endangered variety of Fountain thistle endemic to western San Luis Obispo County. The U.S. Fish and Wildlife Service knows of nineteen populations, many with multiple colonies. A population was discovered in the Reservoir Canyon Natural Reserve in 2001, but has not been monitored or described since the time of its discovery. In fall of 2013, a census of the population was performed, the four colonies were mapped, and a floristic survey was conducted. A field experiment was initiated to determine if reducing the riparian canopy coverage can increase ...


The Correlation Between Veldt Grass (Ehrharta Calycina) And Reproductive Condition Of The Lompoc Kangaroo Rat (Dipodomys Heermanni Arenae), Jacqueline Mae Bates Jun 2013

The Correlation Between Veldt Grass (Ehrharta Calycina) And Reproductive Condition Of The Lompoc Kangaroo Rat (Dipodomys Heermanni Arenae), Jacqueline Mae Bates

Biological Sciences

The invasive species, Veldt grass (Ehrharta calycina), has come to dominate coastal dune shrub vegetation along the Central Coast of California. Along with creating many land management obstacles, this grass has become dominant in the open habitat of Lompoc Kangaroo Rats (Dipodomys heermanni arenae). It is hypothesized that, due to a lack of suitable kangaroo rat habitat, during the breeding season months of March and April, there will be significantly fewer reproductively active females in areas of relatively high Veldt grass cover as opposed to relatively low Veldt grass cover. This study used data from a long-term demographic study on ...


Molecular Modulation Of Single And Multi-Species Biofilm Formation By Orally-Associated Bacteria, Daniel Sellers May 2013

Molecular Modulation Of Single And Multi-Species Biofilm Formation By Orally-Associated Bacteria, Daniel Sellers

Biological Sciences

Biofilms are aggregates of bacterial cells attached to a surface. Oral biofilms (“plague”) are major contributors to tooth decay (dental caries) and are a potential conduit for infection and disease. These biofilms have been shown to be resistant to removal by traditional oral hygiene practices. Novel prophylactic and in situ treatment methods are therefore needed to address this problem. While Oral biofilms have been shown to contain hundreds of species of bacteria we focus on three relevant organisms: Streptococcus mutans, Streptococcus sanguinis, and Actinomyces naeslundii (A. oris). Of the many bacteria involved in cavity formation and tooth decay, S. mutans ...


Differences In The Health Of Domesticated Sheep (Ovis Aries) Pastured In Wild And Agricultural Landscapes, Corine Giroux May 2013

Differences In The Health Of Domesticated Sheep (Ovis Aries) Pastured In Wild And Agricultural Landscapes, Corine Giroux

Biological Sciences

The purpose of this study was to compare the health of sheep grazed in a quasi-wild landscape (Norman’s Kill Farm, an abandoned dairy) as part of a targeted grazing research project, to that of sheep in a conventional agricultural pasture setting (Longfield Farm). This study tested the null hypothesis that there is no difference between the health and nutrition of sheep in a domestic setting and those in a wild setting. Sheep on the quasi-wild landscape were healthier than those on the agricultural setting, having healthier body condition scores. The mean body condition scores of the sheep at Longfield ...


Beneath The Surface Overview, Elizabeth Sikkema Jan 2013

Beneath The Surface Overview, Elizabeth Sikkema

Biological Sciences

As a Wildlife Biology major at Cal Poly, I was able to express my passion for the ocean and beaches in planning and co-designing a beach and dive clean up Earth Day celebration as my senior project. This event took place at Avila Beach on April 21st and was hosted by the Central Coast Aquarium. It was open to the public in attempts to promote outreach and awareness of coastal conservation, allowing volunteers to participate in the clean-ups and visit the Aquarium. The event was a success, involving over 100 volunteers, collecting and recycling 150 pounds of trash and also ...