Final Observation: November 12

This is my final post for the term project observation.  The aquarium is clearly growing a more diverse and dynamic community of organisms.  Much like last week, the bottom of the tank is very still and is mainly home to corpses.  The majority of activity is around the plants.  The actinosphaerium, rotifers, and diatoms have all grown and become more motile.  The Nostoc has also multiplied and begun to inhabit other areas of the aquarium.  Below is an image of an organism Coleochaete orbicularis.  I was only able to find one specimen of this particular organism, but it was still enough to provide a clear image.  In using Handbook of Algae by Herman Silva Forest, I was able to identify the algae.

All in all, the aquarium has grown a significant amount and come to form a dynamic environment.  The paramecium, rotifers, diatoms and actinosphaerium became the most motile members of the tank, while the plants provided a plane for them to move.