Osakis Diatom Study

Olivia, Avery, Taylor, Tyler

Question: Are there more Diatoms at two cm or at 80 cm?

Procedure:

I. Clean off slide

II.  Put two drops of water on the slide

III. Take one toothpick and put it in the mud about one-half cm

IV. Take it out

V. Take a circular motion to spread the mud around

VI. Look under a microscope

VII. Count all the Diatoms that can be identified

Materials

I. Slide

II. Toothpick

III. Cover Slide

IV. Microscope

V. Mud

VI. Water

VII. Water Dropper

VIII.  Notebook/Paper

Data

Two cm deep five different Diatoms- 4 slides, types are: Melosira, Nitzchia, Diatoma, Stephanadiscus, and Cocconeis

Eighty cm deep six different Diatoms- 4 slides, types are: Cymbella, Melosira, Frustulia, Nitzchia, Surirella, Euontia 

Conclusion

Claim: Eighty cm deep had one more Diatoms that two cm.

Evidence: We took four slides of each and found that there was just one 

more Diatoms at two cm than at eighty cm.

Reasoning: The reasoning we came up with was that eighty cm could've 

settled so that they could've cross bred to make a different Diatom or they just be different conditions the farther they go.

Questions/Comments: Very interesting shape description in the experiment by Nick, Dylan, Eric, RC