Competition Of Chlamydomonas And Blue Green Algae For Resources

1070 Words Oct 24th, 2016 5 Pages
Competition Of Chlamydomonas and Blue-Green Algae For Resources In The Campus Lake

General Research Question: Will competition affect resources available in the Campus Lake?
Population Ecology Experiment
Null Hypothesis: The presence of Blue-Green Algae will not have an effect on the Chlamydomonas population.
Alternative Hypothesis: The presence of Blue-Green Algae will have an effect on the Chlamydomonas population.
Community Ecology Experiment
Null Hypothesis: Nitrate concentration will not have an effect on chlorophyll levels in the Campus Lake.
Alternative Hypothesis: Nitrate concentration will have an effect on chlorophyll levels in the Campus Lake.
Methods

Population Experiment First, nine test tubes were obtained. One test tube was used for the control (Chlamydomonas), one for treatment one (Blue-Green Algae), and one for treatment two (Both). Each treatment had three replicates. All of the test tubes were sealed with parafilm, inverted, and measured using a spectrophotometer once every week for four weeks. After every week, all of the test tubes appeared darker in color, which correlated to the absorbance values found. To measure the absorbance of all test tubes, the spectrophotometer was calibrated with a Min blank and set to a wavelength of 750 nm. After calibrating the spectrophotometer, absorbance values were taken of the control and treatment test tubes. The absorbance readings given by the spectrophotometer were used along with the equation y=1.058x…

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