1. The Hermitage Stream

3. Building Leigh Park After World War II, lots of people had to leave Portsmouth. Leigh Park was built to house them. It was the biggest housing estate ever built in England. OLD PHOTOGRAPHS

4. What happened to the Hermitage Stream? To make way for the houses, and to reduce the chance of a flood, the Hermitage Stream was ‘channelised’. The stream was straightened out...

5. The banks and the bed of the stream were covered in concrete and the stream was made deeper.

6. Spot the differences!

7. Where do animals live in the stream?

8. Animals in the stream - The Bullhead Type of – fish Size - It likes to live – under stones or amongst weeds. It eats – insects and other invertebrates It is eaten by - Kingfishers IMAGE OF BULLHEAD

9. Animals in the stream - The Freshwater Shrimp Type of – invertebrate Size – up to 1.5 cm It likes to live – under stones or amongst weeds. It eats – algae and detritus (e.g. pieces of dead leaves) It is eaten by – small fish (e.g. The bullhead) © Hans Hillewaert

10. Animals in the stream – The Pondskater Type of – invertebrate Size – 1-2 cm It likes to live – on the surface of the stream, where the water is very still. It eats – small insects It is eaten by – frogs, fish and birds

11. What differences do you think there will be?

12. How can we make it a fair test?