Team Project Page

The Effects of Varying CO₂ Concentrations on the Marine Diatom Thalassiosira weissflogii

Kathryn Barclay, Kurt MacDonald, Bukky Okusanya, Judy Parsons, & Lorna Rogers

Project Advisor: Irene Schaperdoth

Abstract:

This research investigated the response of the marine diatom Thalassiosira weissflogii to conditions that simulate low, normal, and high levels of atmospheric CO₂. The growth of the diatoms was not enhanced by increased CO₂ because of inorganic nutrient limitations. For complete results, view the Complete Report.

Here you will find introductory information on many of the topics relevant to this research, including:

The research performed on this topic has been formally summarized in the following scientific report:

The Effects of Varying CO₂ Concentrations on the Marine Diatom Thalassiosira weissflogii

Title Page and Abstract

Introduction	Hypotheses
Methods	Results

Discussion

Complete Report (all pages)

The following are direct links to the graphs and data tables generated by this experiment..

Graphs

Diatom Population Growth (Fig. 1)	pH of Culture Medium (Fig. 2)
Fluorescence of Chlorophyll (Fig. 3)	Photopigment Concentrations (Figs. 4, 5, 6)
Inorganic Nutrients (Figs. 7, 8, 9)	Carbonic Anhydrase Activity (Fig. 10)

Teacher Page--Teacher instructions for conducting inquiry-based exercises with the data generated during this experiment.

Teacher Page

Student Pages--Student instructions for conducting inquiry-based exercises with the data generated during this experiment.

Experiment Methods	Student Data
Activity Instructions (printable)	Data Collection Sheet (printable)

Laboratory Experiment

The research described here, in addition to the student activities produced, apply to the following National Standards:

All sources referenced on this internet site are located here:

References