Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Marine Biology (3)
- Physical Sciences and Mathematics (3)
- Biochemistry (2)
- Biochemistry, Biophysics, and Structural Biology (2)
- Ecology and Evolutionary Biology (2)
-
- Environmental Sciences (2)
- Fresh Water Studies (2)
- Natural Resources and Conservation (2)
- Oceanography and Atmospheric Sciences and Meteorology (2)
- Amino Acids, Peptides, and Proteins (1)
- Biology (1)
- Chemicals and Drugs (1)
- Chemistry (1)
- Enzymes and Coenzymes (1)
- Medicine and Health Sciences (1)
- Organic Chemistry (1)
- Pharmacology, Toxicology and Environmental Health (1)
- Population Biology (1)
- Terrestrial and Aquatic Ecology (1)
- Toxicology (1)
Articles 1 - 8 of 8
Full-Text Articles in Life Sciences
Determination Of Fucoidan, Alginate, And Protein Concentrations In Edible Seaweeds From The Salish Sea Region, Katherine Berreman
Determination Of Fucoidan, Alginate, And Protein Concentrations In Edible Seaweeds From The Salish Sea Region, Katherine Berreman
Scholars Week
In the past, the indigenous people of the Salish Sea relied on a variety of edible seaweeds as a food source. Some of these seaweeds contain biologically active compounds including fucoidans and alginates that have anti-oxidant, anti-inflammatory, anti-allergy, anti-tumor, anti-obesity, anti-coagulant, and anti-viral properties. This project will take advantage of seaweed samples harvested from the Salish Sea region that were used for measurements of toxin content. Although these seaweeds contain toxins they also have numerous health benefits that likely outweigh the detrimental effects of the toxins. In order to better understand the health benefits of consuming these traditionally harvested seaweeds, …
Norms Of Reaction For Pheromone Response In Saccharomyces Cerevisiae Isolates, Shelby Duffy
Norms Of Reaction For Pheromone Response In Saccharomyces Cerevisiae Isolates, Shelby Duffy
Scholars Week
Traits are commonly influenced by environmental and genetic factors, yet the contribution of each is often poorly understood. An important life history trait in baker’s yeast (Saccharomyces cerevisiae) is the rate at which cells prepare for mating in response to environmentally released pheromones. Wild strains of yeast differ in mating pheromone response and alleles of the G-Protein alpha subunit of the pheromone receptor have been shown to affect both pheromone response and fitness. It is known that pheromone response depends on pheromone concentration, but the effects of environmental factors are largely unknown. In order to characterize the effects of environmental …
A Chemoenzymatic Approach For Synthesizing Polymeric Hemoglobin, Johann P. Sigurjonsson
A Chemoenzymatic Approach For Synthesizing Polymeric Hemoglobin, Johann P. Sigurjonsson
Graduate Student Symposium
Polymerized hemoglobin (Hb) molecules have been shown to decrease previously observed adverse events associated with the administration of cell-free hemoglobin. To create these polymers, a method will be developed which employs the site specific ligation reaction of the sortase A enzyme from S. aureus. An Hb mutant (“αcpβ“) previously developed in our lab has been further modified by adding either the sortase recognition sequence, LPXTG, to the C-terminus of the α-subunit (s-αcpβ), or a tetraglycine motif, GGGG, to the N-terminus (n-αcpβ). Three types of sortase mediated ligation (SML) will be employed in this study. First, we will attempt to ligate …
Substrate Analogs For Characterizing The Substrate Tolerance Of S. Pneumoniae Srta, Orion Banks
Substrate Analogs For Characterizing The Substrate Tolerance Of S. Pneumoniae Srta, Orion Banks
Graduate Student Symposium
Bacterial sortases have been widely studied for their usefulness in protein modification, however, the variable substrate specificity and activity between homologs of these enzymes is not yet fully characterized. To attempt to further understand sorting signal recognition, we are working towards a substrate bound structure of sortase A from Streptococcus pneumoniae (SrtApneu). This enzyme displays a wide tolerance for alternate amino acids within the canonical LPXTG sorting motif. Our strategy involves a non-cleavable substrate analog that can be docked into the active site, allowing for elucidation of a structure displaying the key contacts that allow the enzyme …
The Role Of Avian Seed Dispersers And Large Woody Debris In Plant Establishment Following Dam Removal On The Elwha River, Wa, Sara J. Cendejas-Zarelli
The Role Of Avian Seed Dispersers And Large Woody Debris In Plant Establishment Following Dam Removal On The Elwha River, Wa, Sara J. Cendejas-Zarelli
Graduate Student Symposium
Reservoir drawdown following the removal of two hydroelectric dams on the Elwha River, Washington, exposed ~800 acres of sediments and left a barren landscape in the former reservoirs. The establishment of native vegetation within these areas is critical to meeting restoration objectives. Large woody debris (LWD) can play an important role in riparian ecosystems and may assist in the development of early plant communities. LWD helps create favorable microsites for seedlings by creating shade, which decreases temperatures and increases moisture levels in sediments. In sparsely-vegetated landscapes such as those present in the former Mills reservoir, wildlife such as birds can …
Assessing The Effects Of Chemical Mixtures Using A Bayesian Network-Relative Risk Model (Bn-Rrm) Integrating Adverse Outcome Pathways (Aops), Valerie Chu, Meagan J. Harris, Scarlett Graham, Lindsay K. Wallis, Chelsea Mitchell, John D. Stark, Katherine Von Stackelberg
Assessing The Effects Of Chemical Mixtures Using A Bayesian Network-Relative Risk Model (Bn-Rrm) Integrating Adverse Outcome Pathways (Aops), Valerie Chu, Meagan J. Harris, Scarlett Graham, Lindsay K. Wallis, Chelsea Mitchell, John D. Stark, Katherine Von Stackelberg
Graduate Student Symposium
There are long-standing uncertainties about toxicity of chemical mixtures to populations. Laboratory toxicity tests have confirmed synergistic and antagonistic effects to individuals, but not to populations.We will conduct a regional scale ecological risk assessment by evaluating the effects chemical mixtures to populations with a new Bayesian Network- Relative Risk Model (BN-RRM) incorporating an Adverse Outcome Pathway (AOP). We started applying this new BN-RRM framework in a case study with organophosphate pesticide mixtures (diazinon, chlorpyrifos, and malathion). Acetylcholinesterase inhibition (AChE) was chosen the molecular initiating event and the Puget Sound Chinook salmon (Oncorhynchus tshawytscha) and Coho salmon (Oncorhynchus kisutch …
Changes In Cormorant Populations In The Strait Of Georgia, British Columbia, 1955-2015, Harry R. Carter, Trudy A. Chatwin, Mark C. Drever
Changes In Cormorant Populations In The Strait Of Georgia, British Columbia, 1955-2015, Harry R. Carter, Trudy A. Chatwin, Mark C. Drever
Salish Sea Ecosystem Conference
Between 1987 and 2000, nesting populations of Pelagic Cormorant (Phalacrocorax pelagicus; PECO) and Double-crested Cormorant (P. auritus; DCCO) declined in the Strait of Georgia, BC. This northern section of the Salish Sea is a rapidly urbanizing area, and piscivorous birds are important indicators of ecosystem health. To update population status, we conducted a complete survey of 35 PECO and 23 DCCO colonies in July 2014 and opportunistic surveys of some colonies between 2001 through 2015. The PECO population decreased from ~2100-2400 nests in 1959-1987 to ~1100 nests by about 2000, and then rose slightly …
Advances In Salish Sea Acoustic Telemetry: 2015 Array Deployments And Promising Transmitter Performance, Erin L. Rechisky, David W. Welch, Aswea D. Porter, Paul Winchell
Advances In Salish Sea Acoustic Telemetry: 2015 Array Deployments And Promising Transmitter Performance, Erin L. Rechisky, David W. Welch, Aswea D. Porter, Paul Winchell
Salish Sea Ecosystem Conference
The first fish tracking arrays were deployed in the Salish Sea over a decade ago. These arrays have yielded a rich data set which have provided the first direct estimates of early marine-survival and migratory behavior for acoustic-tagged juvenile sockeye, Chinook, Coho and steelhead >130 mm in fork length (FL). In spring of 2015, as part of the Salish Sea Marine Survival Project, the Pacific Salmon Foundation, the Ocean Tracking Network and Kintama Research deployed additional arrays in the Discovery Islands and Johnstone Strait (north of the Strait of Georgia) to provide higher resolution survival data. These new arrays use …