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Articles 1 - 8 of 8
Full-Text Articles in Marine Biology
Preliminary Analysis Of Identifying Microplastic Polymers Using Ftir Spectroscopy From Surface Waters In The Pacific Northwest, Hannia Larino
Preliminary Analysis Of Identifying Microplastic Polymers Using Ftir Spectroscopy From Surface Waters In The Pacific Northwest, Hannia Larino
Environmental Science Undergraduate Theses
Microplastics (MP) are synthetic polymers < 5 mm in length. They have been found in a range of aquatic environments and inside the organs of human and aquatic species. There have been a number of studies surveying waterways for MP presence and abundance using microscopic analysis, however there is limited research findings on MP polymer identification. For this project, surface water samples were collected from 5 sites in the Pacific Northwest, extraction was done using wet peroxide oxidation, and Fourier Transformed Infrared (FTIR) spectroscopy was used to identify the polymers. Microplastics were found at all 5 sites, with the dominant polymer being polyethylene (> 65%), fragment was the most common morphology (> 74%), black was the most common color (≥ 33%), and the most common lengths were below 1 mm (>50%). Understanding the MP composition in surface waters can help direct policies related to reduction of plastic pollution in aquatic environments. Furthermore, knowing the chemical composition of polymers can help researchers understand how MPs influence the physiology and ecology of biota. Future research should investigate if spatiotemporal variables influence the results.
Validation Of Pilot Protocol: Damage Scoring Of Puget Sound Mollusk Shells, Lauren Doffing
Validation Of Pilot Protocol: Damage Scoring Of Puget Sound Mollusk Shells, Lauren Doffing
Environmental Science Undergraduate Theses
The Marine Sediment Monitoring Team at the Washington State Department of Ecology observed damage to mollusk shells while studying the benthic communities of Puget Sound. A pilot protocol was written to allow researchers to quantify the damage. Two researchers independently followed the protocol, including reference photos, for a set of samples collected in 2019 from an urban bay, East Possession Sound. Two scores were given to each specimen: highest-level damage and extent of highest-level damage. An additional score was given to bivalve species: rust/stain. The sets of scores were compared to determine if the protocol yielded similar values between the …
Desalination Concentrate Disposal: Ecological Effects And Sustainable Solutions, Ryan Hanley
Desalination Concentrate Disposal: Ecological Effects And Sustainable Solutions, Ryan Hanley
Global Honors Theses
Freshwater availability is a growing global concern, and desalination is often presented as the solution, but from this important technology comes issues of toxic waste. Ecosystems are delicate areas that contain species adapted to that specific location, and any chemical or physical changes can disrupt the fitness of species. The concentrate byproduct waste from desalination plants is toxic to species if the concentrate is not compatible with the receiving water body. A critical review of scientific articles, industry-leading books, conversations with industry experts, and information from the American Membrane Technology Association conference was used to analyze the current knowledge. Species …
Determining Distribution And Size Of Larval Pacific Geoduck Clams (Panopea Generosa Gould 1850) In Quartermaster Harbor (Washington, Usa) Using A Novel Sampling Approach, Bonnie Becker, Michael D. Behrens, Yvonne A. Shevalier, Christine M. Henzler, Elizabeth A. Hoaglund, Brenda K. Lemay
Determining Distribution And Size Of Larval Pacific Geoduck Clams (Panopea Generosa Gould 1850) In Quartermaster Harbor (Washington, Usa) Using A Novel Sampling Approach, Bonnie Becker, Michael D. Behrens, Yvonne A. Shevalier, Christine M. Henzler, Elizabeth A. Hoaglund, Brenda K. Lemay
SIAS Faculty Publications
Realistic species-specific information about larval life history is necessary for effective management of shellfish and parameterization of larval connectivity models. The patchiness of dispersing larvae, and the resources needed for sorting and identifying them, has limited many studies of larval distribution in the field, especially for species that are less common. In particular, little is known about in situ larval distribution of Pacific geoduck clams (Panopea generosa Gould 1850), a commercially important species found in Puget Sound, WA. A novel approach-time-integrating larval tube traps paired with molecular identification and sorting (FISH-CS)-was used to determine the distribution of geoduck larvae over …
Novel Larval Trapping Technique Indicates Importance Of Rare Events Driving Connectivity Of Geoduck Clams In Puget Sound, Washington, Bonnie Becker, Michael Behrens, Christine Henzler, Elizabeth Hoaglund, Yvonne Shevalier, Brenda Lemay, Shayla Staggers, Jolene Brokenshire
Novel Larval Trapping Technique Indicates Importance Of Rare Events Driving Connectivity Of Geoduck Clams In Puget Sound, Washington, Bonnie Becker, Michael Behrens, Christine Henzler, Elizabeth Hoaglund, Yvonne Shevalier, Brenda Lemay, Shayla Staggers, Jolene Brokenshire
SIAS Faculty Publications
No abstract provided.
Using Phylogenetic Analysis To Detect Market Substitution Of Atlantic Salmon For Pacific Salmon: An Introductory Biology Laboratory Experiment, Erica T. Cline, Jennifer Gogarten
Using Phylogenetic Analysis To Detect Market Substitution Of Atlantic Salmon For Pacific Salmon: An Introductory Biology Laboratory Experiment, Erica T. Cline, Jennifer Gogarten
SIAS Faculty Publications
We describe a laboratory exercise developed for the cell and molecular biology quarter of a year-long majors' undergraduate introductory biology sequence. In an analysis of salmon samples collected by students in their local stores and restaurants, DNA sequencing and phylogenetic analysis were used to detect market substitution of Atlantic salmon for Pacific salmon. This allowed students to apply molecular methods such as polymerase chain reaction (PCR) and DNA sequencing to a socially relevant issue.
Evaluating The Skeletal Chemistry Of Mytilus Californianus As A Temperature Proxy: Effects Of Microenvironment And Ontogeny, Heather L. Ford, Stephen A. Schellenberg, Bonnie Becker, Douglas L. Deutschman, Kelsey A. Dyck, Paul L. Koch
Evaluating The Skeletal Chemistry Of Mytilus Californianus As A Temperature Proxy: Effects Of Microenvironment And Ontogeny, Heather L. Ford, Stephen A. Schellenberg, Bonnie Becker, Douglas L. Deutschman, Kelsey A. Dyck, Paul L. Koch
SIAS Faculty Publications
Molluscan shell chemistry may provide an important archive of mean annual temperature (MAT) and mean annual range in temperature (MART), but such direct temperature interpretations may be confounded by biologic, metabolic, or kinetic factors. To explore this potential archive, we outplanted variously sized specimens of the common mussel Mytilus californianus at relatively low and high intertidal positions in San Diego, California, for 382 days with in situ recording of ambient temperature and periodic sampling of water chemistry. The prismatic calcite layer of eight variously sized specimens from each intertidal position were then serially microsampled and geochemically analyzed. Average intraspecimen delta(18)O …
Complex Larval Connectivity Patterns Among Marine Invertebrate Populations, Bonnie Becker, Lisa A. Levin, E. Joel Fodrie, Pat A. Mcmillan
Complex Larval Connectivity Patterns Among Marine Invertebrate Populations, Bonnie Becker, Lisa A. Levin, E. Joel Fodrie, Pat A. Mcmillan
Bonnie Becker
Based on the belief that marine larvae, which can spend days to months in the planktonic stage, could be transported considerable distances by ocean currents, it has long been assumed that populations of coastal species with a planktonic larval stage are demographically open and highly "connected." Such assumptions about the connectivity of coastal populations govern approaches to managing marine resources and shape our fundamental understanding of population dynamics and evolution, yet are rarely tested directly due to the small size and high mortality of marine larvae in a physically complex environment. Here, we document a successful application of elemental fingerprinting …