Field Notes Journal a personal natural history of place

IV.4 Observation of Protozoa

Aim

To observe the movement and behaviour of protozoa.

Specimen & Apparatus

• Stagnant pond or ditch water sample
• Pipette or dropper
• Slide and coverslip
• Compound microscope

Method

1. Place a drop of water on a slide.
2. Apply a coverslip carefully, avoiding excessive pressure.
3. Examine under low power to locate moving organisms.
4. Increase magnification to observe behaviour.
5. Adjust illumination as needed to improve visibility.

Observations to Make

• Types of movement (e.g. gliding, swimming).
• Changes in shape during movement.
• Interaction with surrounding material.
• Any visible internal structures.