Description/Abstract/Artist Statement

Harmful Algal Blooms are a collection of algae in a body of water that can cause serious environmental issues and health problems in both people and aquatic organisms. Dinoflagellates are microscopic, unicellular, and eukaryotic organisms that are well known for forming harmful algal blooms because of eutrophication. Coastal Virginia suffers from HABs in the Chesapeake Bay and its tributaries. A common species of dinoflagellate, known as Margalefidinium polykrikoides exists in the Chesapeake Bay. The purpose of this study is to determine if sediment resuspension produced by wind generated surface gravity waves cause cysts (dinoflagellate resting stages) to be suspended into the water column, which could contribute to bloom initiation if they germinate and then inoculate the water column with motile cells. Using light microscopy and qPCR, we will determine the percentage of resuspended dinoflagellate cysts being identified as Margalefidinium polykrikoides.

Presenting Author Name/s

Gabrielle Greaney

Faculty Advisor/Mentor

Dr. Margaret Mulholland

Faculty Advisor/Mentor Department

Ocean and Earth Sciences

College Affiliation

College of Sciences

Presentation Type

Poster

Disciplines

Biology | Environmental Health and Protection | Genetics | Marine Biology | Oceanography

Session Title

Poster Session

Location

Learning Commons Lobby @ Perry Library

Start Date

3-25-2023 8:30 AM

End Date

3-25-2023 10:00 AM

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Mar 25th, 8:30 AM Mar 25th, 10:00 AM

Margalefidinium polykrikoides Cyst Resuspension in the Lafayette River, a Sub-tributary of the Chesapeake Bay

Learning Commons Lobby @ Perry Library

Harmful Algal Blooms are a collection of algae in a body of water that can cause serious environmental issues and health problems in both people and aquatic organisms. Dinoflagellates are microscopic, unicellular, and eukaryotic organisms that are well known for forming harmful algal blooms because of eutrophication. Coastal Virginia suffers from HABs in the Chesapeake Bay and its tributaries. A common species of dinoflagellate, known as Margalefidinium polykrikoides exists in the Chesapeake Bay. The purpose of this study is to determine if sediment resuspension produced by wind generated surface gravity waves cause cysts (dinoflagellate resting stages) to be suspended into the water column, which could contribute to bloom initiation if they germinate and then inoculate the water column with motile cells. Using light microscopy and qPCR, we will determine the percentage of resuspended dinoflagellate cysts being identified as Margalefidinium polykrikoides.