University of Rhode Island DigitalCommons@URI Open Access Master's Theses 2016 Thalassiosira Community Composition and Diversity in Narragansett Bay Sarah Flickinger University of Rhode Island,
[email protected] Follow this and additional works at: https://digitalcommons.uri.edu/theses Recommended Citation Flickinger, Sarah, "Thalassiosira Community Composition and Diversity in Narragansett Bay" (2016). Open Access Master's Theses. Paper 880. https://digitalcommons.uri.edu/theses/880 This Thesis is brought to you for free and open access by DigitalCommons@URI. It has been accepted for inclusion in Open Access Master's Theses by an authorized administrator of DigitalCommons@URI. For more information, please contact
[email protected]. THALASSIOSIRA COMMUNITY COMPOSITION AND DIVERSITY IN NARRAGANSETT BAY BY SARAH FLICKINGER A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE IN OCEANOGRAPHY UNIVERSITY OF RHODE ISLAND 2016 MASTER OF SCIENCE THESIS OF SARAH FLICKINGER APPROVED: Thesis Committee: Major Professor Tatiana Rynearson Candace Oviatt Bethany Jenkins Nasser H. Zawia DEAN OF THE GRADUATE SCHOOL UNIVERSITY OF RHODE ISLAND 2016 ABSTRACT Diatoms contribute 40-45% of marine primary production. Understanding the contributions of individual species to diatom communities is important in light of warming ocean waters and changing food webs. Here, the diatom genus Thalassiosira, which exhibits irregular pulses in abundance in Narragansett Bay, is examined using data from the Narragansett Bay Long Term Phytoplankton Time Series. High-throughput sequencing (HTS) at the highly-variable V4 region of the 18S ribosomal gene identified fourteen Thalassiosira taxa in monthly samples over a six- year time period (December 2008-December 2014), seven of which had not previously been identified in this time series.