Week 4

The aquarium revealed much more decay than in the previous weeks. Life in the aquarium seems to be depleting but is still a ways from absent.

The larger organisms seem to have eaten away at many of the smaller organisms and the living plants within the aquarium.

Many of the decay has accumulated at the bottom of the aquarium and life still seems to be most present in the lower regions.

There are still algeas thriving such as:
Spiragyra sp. (Prescott)

and Mougeotia sp. (Prescott)

Smaller organisms like Euplotes sp. (Pennak) and Halteria sp. (Pennak) are still roaming the aquarium but as food runs out they become more a target for the larger organisms.

Bibliography:

Pennak R. Fresh Water Invertebrates of the United States. New York. John Wiley and Sons, Inc.

Prescott G.W.. The Fresh Water Algae. Dubugue, Iowa. W.M.C Brown Company Publishers. 

The third week seemed to hold much more larger organisms. It seemed as if the larger organisms had been feeding on the smaller species and depleting them in numbers.

Some of the larger organisms I observed were:

Aeolosomun sp. (Pennak pg.299)

Euchlanis sp. (Pennak pg.171)

Amoeba sp.

There were less but still a plenty of smaller organisms such as 

Euplotes sp. (Pennak pg.145)

The aquarium was also still plentiful in algae and diatoms such as

Mougeotia sp. (Prescott pg.102)

and 

Unnamed Diatom

There was is much more decay in the aquarium of things like leafs and dead organisms. The presents of algae seems to remain similar to the making of the aquarium, and the larger organisms seem to be flourishing while feeding on the smaller organisms, but they are still maintaining a relevant population. 

Bibliography:

Pennak R. Fresh Water Invertebrates of the United States. New York. John Wiley and Sons, Inc.

Prescott G.W.. The Fresh Water Algae. Dubugue, Iowa. W.M.C Brown Company Publishers.