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Research Seminar: Johnson Lin

March 16, 2020 @ 12:30 pm - 1:30 pm

Johnson YuanYu Lin is a graduate student within the UNC-CH Department of Marine Sciences and a member of the Marchetti labThe UNC-CH Department of Marine Sciences presents the research seminar of graduate student, Johnson (YuanYu) Lin. This event will be held on Monday, March 16th, at 12:30 pm. The main location of this event will be in seminar room G201 on the ground floor of Murray Hall on UNC-CH campus in Chapel Hill, NC. The seminar will be streamed live to UNC’s Institute of Marine Sciences (IMS) seminar room 222 in Morehead City, NC and it will be available online via Zoom (Meeting ID: 291 853 980).

Seminar Title: Characterizing Phytoplankton Response to Upwelling Dynamics on a Changing Planet

Abstract: Eastern Boundary Current Systems are disproportionately the most biologically productive regions in the oceans. The California Current System (CCS), in particular, is characterized by seasonal variations in upwelling intensity and nutrient-induced algal blooms. Within the CCS, the upwelling conveyor belt cycle (UCBC) plays an important role in dictating phytoplankton community composition and physiology. The mechanisms behind how these cells – the basis of the marine food web – acclimate to the different stages of the UCBC remain largely uncharacterized. Adding to the complexity of this highly dynamic environment is the notion that iron bioavailability heavily influences phytoplankton growth dynamics and elemental stoichiometry in this region, and climate change is projected to alter this micronutrient’s availability in many parts of the CCS. The study implores both field incubations and laboratory simulations to better understand the multifaceted response in such a complex but ecologically important marine ecosystem. By using an integrated physiological and molecular approach through flow cytometry and transcriptomics, we hope to better comprehend how dominant phytoplankton taxa within this region acclimate and react to upwelling dynamics in both current and future ocean scenarios. Given the extent to which these organisms contribute to carbon sequestration and global fisheries, understanding the biological processes behind how they function under climate change will ultimately help us better predict their influence on our planet’s biogeochemical cycles.


March 16, 2020
12:30 pm - 1:30 pm
Event Category:



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