Observation of biotic factors under a microscope.

We looked at a sample of our aqua zone water under a microscope and we found nothing.

Fruit fly under a microscope.

When we looked at a sample our our decomp zone we found a dead fruit fly. This proves that there are organisms living off our eco-column. In the picture above we can see the fruit fly dead. It had been feeding off the decomposing fruit in the decomp zone.

Biotic factors after 2 weeks

Average height of plants: 146mm
(average taken from 4 plants)

Average number of leaves per plant: 2.5
(average taken from 4 plants)

Several fruit flies flying around the decomp zone living off the decomposing fruit.

There are 4 worms living in the decomp zone and one dead worm. Here is a picture of two of our worms.

We as a group expected our eco-column to have living and dead organisms in it.

Abiotic features of our eco-column after 2 weeks

Abiotic features

Temperature of aqua zone: 27 degrees Celsius
Temperature of the room: 35 degrees Celsius
pH reading of the aqua zone: 9

The temperature of the aqua zone is expected because it is a hot, humid zone. We had several worms in the decomp zone but because of the temperature of the zone one died.
When the temperature recording took place the room was hot which could have effected the temperature of the aqua zone.

Our eco-column does not receive light from 4 o'clock in the afternoon until 8 o'clock in the morning because it is in a classroom. It also being constantly kept cool by roof fans above it at the same times as the light but the fans do not turn on on Saturday and Sunday.

These factors could have varied the temperature of the aqua zone and the pH reading.