Observation 11-9-10

Today was the final day for observations of our MicroAquariums. The organisms in mine seem to have slowed down quite a bit. There were very few "larger" organisms left to observe. All of the ostracods, or seed shrimp, appear to be dead. The water mite that I observed earlier was nowhere to be found, nor was the large Annelid. I did see a few smaller Annelid worms that I hadn't noticed previously. There were also fewer rotifers, although the ones that were present were much larger than in recent weeks. Some of the smaller organisms increased in number, however. The number of parameciums appeared to have tripled, as did the population of Fragillaria. I did observe a phenomenon that seemed very strange: there was a large group of Navicula that were arranged in a single-file line. This line contained at least a hundred of the organisms. I asked Dr. McFarland about this, although he wasn't sure of the cause.