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Water Bug Report

Water Bug Report. 8 Science 1. Warrambungle EEC. Thankyou to all members of the Warrambungle Environmental Education Centre for running this excursion. Thankyou also to Meg Leathart for providing all the equipment and her skills to help us. Learning Intention. We needed to learn how to:

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Water Bug Report

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  1. Water Bug Report 8 Science 1

  2. Warrambungle EEC Thankyou to all members of the Warrambungle Environmental Education Centre for running this excursion. Thankyou also to Meg Leathart for providing all the equipment and her skills to help us.

  3. Learning Intention We needed to learn how to: • Correctly Identify and tally numbers of collected bugs. • Work out the health and running speed of the water in the river.

  4. Where We Went We went down to the Namoi River near Cohen's Bridge in Gunnedah.

  5. Equipment We Used numerous equipment including: • Nets • Buckets • Sorting Trays • Magnifying Glass • Water Bug Guide • Recording Sheet

  6. Personal Protection • Gumboots/Enclosed Shoes • Hat • Sunscreen • Long Pants

  7. Collecting Samples We collected samples from different habitudinal areas such as: • Rapid Running areas • Riffles • Edge waters • Calm areas • Muddy and murky waters

  8. Where We Caught Them Deeper and slower moving waters held specific bugs and quick moving waters held others. • Fast Movers (beetles and skimmers) • Bottom dwellers (worms and sea larvae) We caught them by stirring up the water and waving our nets through the murky water.

  9. Identifying Samples We used the Water Bug Guide and magnifying glass to inspect and identify the numerous bugs and critters caught. We then tallied the bugs and numbers on the Recording Sheet with the: • Sensitivity • Weight • Bug type

  10. Identification Chart

  11. Sensitivity Ratings Very Tolerant Tolerant Sensitive Very Sensitive 1 2 3 4 5 6 7 8 9 10 Mayfly Nymph 14 Diving Beetle 6 Beetle Larva 1 Stonefly Nymph 2 Water Boatmen 45 Dragonfly Nymph 1 Freshwater Worm 2 Water Strider 1 Freshwater Crayfish 1 Bloodworm 1 Whirligig Beetle And larvae 16 Freshwater Shrimp 14 Freshwater Mussel 5 114 Total

  12. Stream Pollution Index • Stream Pollution Index = Total (SR x WF) Total WF   SPI= 12532 SP= 3.9

  13. Conclusion Near 120 bugs were collected over a vast range of species. The Stream Pollution index was calculated at near 4.0. The Stream Quality is rated at fair at the study site.

  14. 8 Science 1

  15. 8 Science 1

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