Last Tuesday we worked with Sherril on determining the amount of dissolved oxygen from different areas of the pond that also contained large portions of Gorilla ogo. We collected water samples from inside the canopy of the Gorilla ogo, and outside of the canopy as well. Once all the samples were collected, we used titration to determine the amount of dissolved oxygen from the samples.
|Koa mixing in the titrant.|
|Anu scraping pieces of ogo.|
On Saturday Megsie started off with a whiteboard lecture, giving us a basic understanding of a food chain and how detritus organisms play a major role in food webs as well as the brown and green worlds. Megsie also went on to explain stable isotopes and the role they play in food webs.
We then went out to collect samples of Gorilla ogo from specific areas in the pond. After collecting samples, pieces of Gorilla ogo(10cm long) were taken from each site and cleaned off by scraping the top layer of the Gorilla ogo. This was to help Megsie determine what type of organisms are living of the Gorilla ogo.
|Niki and Koa siving.|
A sting ray Cami, Lelia, and I found inside the pond by the break in the wall.