Final Observation

My final observation took place on November 19, 2012. There was a noticeable difference in the MicroAquarium. I found no 'large' organisms that had survived since the last observation. There were many diatom shells mostly along the bottom but they were all throughout the tank as well. After surveying the habitat it seemed that the only remaining organisms were those who survived on detritus. Vorticella were still prevalent along with many other single celled organisms such as Litonotus. The amoeba, centropyxis sp, was observed again along with other amoeba specimens. It looks as though the food chain is collapsing from the 'top, down'. Larger organisms with relatively higher levels of need have dwindled to what appeared to be zero while single celled organisms seemed almost unaffected.