Dataset Available

Mesocosm: Effect of chemically dispersed crude oil on the grazing of microzooplankton on phytoplankton

Authors: Tang, Chi Hung and Edward Buskey

Published On: Aug 12 2021 19:47 UTC

DOI: https://doi.org/10.7266/8WY262JB

UDI: R6.x802.000:0043

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Project Information

Funded By:
Gulf of Mexico Research Initiative

Funding Cycle:
RFP-VI

Research Group:
Dispersion Research on Oil: Physics and Plankton Studies III (DROPPS III)

Point of Contact

Edward J. Buskey
The University of Texas at Austin / Department of Marine Science
ed.buskey@utexas.edu

Theme keywords

microzooplankton grazing, phytoplankton growth, oil spill, mesocosm, chlorophyll-a, microzooplankton, phytoplankton, PAHs, polycyclic aromatic hydrocarbons, oil pollutants, grazing impact

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Abstract:

The mesocosm study was conducted in May 2017 at the Marine Science Institute of UT Austin in Port Aransas (Texas) aiming to simulate oil spills events in outdoor containers. Whole natural seawater was spiked with 10 µL/L of chemically dispersed Louisiana Sweet crude oil and Corexit 9500A dispersant in outdoor 500L mesocosms to investigate the influence of oil pollutants on the bulk grazing impact of microzooplankton on phytoplankton in natural seawater. This oil pollutant treatment was conducted in triplicate together with triplicate control treatments for comparison. Dilution experiments were conducted to quantify the bulk grazing mortality and population growth of phytoplankton in seawater on the second and sixth days of pollutants exposure. The dataset contains physicochemical data of seawater in mesocosms, biological data of plankton including chlorophyll-a concentration and cell count, and concentration of polycyclic aromatic hydrocarbons (PAHs) and total petroleum hydrocarbons.

Suggested Citation:

Tang, Chi Hung and Edward Buskey. 2021. Mesocosm: Effect of chemically dispersed crude oil on the grazing of microzooplankton on phytoplankton. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/8WY262JB

Publications:

Tang, C. H., & Buskey, E. J. (2022). De-coupled phytoplankton growth and microzooplankton grazing in a simulated oil spill event in mesocosms. Marine Pollution Bulletin, 178, 113631. https://doi.org/10.1016/j.marpolbul.2022.113631

Purpose:

To investigate the influence of oil pollutants on the bulk grazing impact of microzooplankton on phytoplankton in natural seawater.

Data Parameters and Units:

temperature (°C), salinity (PSU), chlorophyll-a concentration (µg/L), PAH concentration (mg/L), total petroleum hydrocarbons concentration (mg/L), cell density (cells/mL)

Methods:

Dilution experiments, outdoor submerged incubation of experiment containers, enumeration of preserved plankton cells under light microscope, concentration of chlorophyll determined using fluorometer, and concentrations of PAHs and total petroleum hydrocarbons determined by GC-MS analysis.

Instruments:

gas chromatography mass spectrometry (GC-MS); fluorometer; microscope