I observed my MicroAquarium for the last time November 11.
Once again, the water level was low. I added a few drops of distilled water to account for evaporation.
The two food pellets added in previous weeks were completely dissolved. Whereas last week the aquarium was swarming with microorganisms, this week movement was scarce.
There was almost no movement in open waters, and I noted the most movement around the plant samples: namely Aeolosoma.
Last week there were dozens of Paramecium, however, this week there were very few. Additionally the numbers of cyclops, flatworms, and other motile microorganisms were greatly reduced.
There was a thick layer of dead organic matter lying on the bottom of the tank in the substrate, primarily consisting of dead Paramecium and Aeolosoma.
Because of the lack of movement, I noticed many more non-motile organisms.
New organisms I observed this week included:
-Coleochaete irregularis, a small green alga found in open water. It exhibits radial and lateral branching from a central filament.
-Several diatomatic organisms. Especially abundant were Tabellaria sp., a colonial alga of the phyla Diatom.
-Some dead green alga, notably Closterium sp. : a chlorophyllic, crescent shaped organism found in open waters.
An organism observed in previous weeks, but more closely noted this week are the Vorticella sp., a small tulip-shaped protist attached to plant samples with prominent cilia.
Monday, November 14, 2011
Sunday, November 6, 2011
Observations Week 3
I made observations this week on November 3rd.
Changes and observations:
I added some distilled water to my MicroAquarium to account for evaporation.
It appeared as though a second food pellet had been added to the tank, and under the microscope, it was swarmed with Aeolosoma and Paramecium, most of which were smaller than previously observed organisms.
Under the microscope, I spotted a greatly increased number of cyclops, aeolosoma, paramecium, and other microorganisms. I also saw some new small organisms not observed in previous weeks, but unidentified.
Aelosoma was especially prevalent around the food pellet, the plant samples, and in the upper level of the substrate.
Some dead organic material sat on the bottom of the tank.
I identified pictures taken from my MicroAquarium of the following:
Changes and observations:
I added some distilled water to my MicroAquarium to account for evaporation.
It appeared as though a second food pellet had been added to the tank, and under the microscope, it was swarmed with Aeolosoma and Paramecium, most of which were smaller than previously observed organisms.
Under the microscope, I spotted a greatly increased number of cyclops, aeolosoma, paramecium, and other microorganisms. I also saw some new small organisms not observed in previous weeks, but unidentified.
Aelosoma was especially prevalent around the food pellet, the plant samples, and in the upper level of the substrate.
Some dead organic material sat on the bottom of the tank.
I identified pictures taken from my MicroAquarium of the following:
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