Mr Virgona took the Year 12 Integrated Science class on a tour of the aquatic ecosystems of Perth. Students checked pH, temperature and turbidity in the field and also collected water samples for testing oxygen and nutrients later in the lab. The tour started with the Swan River at Bell’s Rapids which was in flood and was visually spectacular as hundreds of tonnes of water flowed, bubbled and churned past every second.
The next site was the quiet Bennet Brook at Beechboro, tucked behind housing estates and then on to lunch at Sandy Beach Reserve Bassendean. Here the river has widened but was still in flood and moving quickly. The final stop was at Lake Gwelup, Gwelup where the water height changes as the groundwater rises and falls. A tiring but great day was had by all and a big thanks to Mr Wright for helping out on the day.