1. Biology October 6, 2016
Class: Post River Study Homework: Test on Water properties, Water cycle, Macroinvertebrates, Watershed Next week

2. We will fill in the chart and determine the quality of the river.
Results from river
We will fill in the chart and determine the quality of the river.
Adapted from Mr. Christensen

4. Pd 2 Data Sheet
Date 10/5/16 Site ID: Above Bridge Stream: West Branch of Susquehanna Latitude: N Longitude: 78.5 W Time: 8:45 am Time Sampling: .5 hrs Air Temp: 150C Water Temp: 180C Current Weather: Overcast Worst Weather: Overcast Methods: Kick Seine Net Habitat: Riffles Sediment
15 – 59F 18 – 64.4F

5. Pd 2 Macroinvertebrates
30 Mayfly Nymph
>100 Caddisfly Larva
7 Riffle Beetles
2 Hellgrammites (Dobsonfly Larva)
25 Damselfly
10 Crayfish
1 Flatworm
12 Black fly larva
4 Aquatic Worms
2 Blood midge larva

6. Pd 6 Data Sheet
Date 10/5/16 Site ID: Below Anderson Creek Stream: West Branch of Susquehanna Latitude: N Longitude: 78.5 W Time: 12:30 pm Time Sampling: .5 hrs Air Temp: 150C Water Temp: 200C Current Weather: Overcast Worst Weather: Overcast Methods: Kick Seine Net Habitat: Riffles Sediment
18.3 – 65F 20 – 68F

7. Macroinvertebrates 2 Mayfly Nymph 4 Caddisfly Larva 11 Damselfly
1 Dragonfly
19 Crayfish
11 Aquatic Worms

8. Research: How land affects water quality.

9. Land use & Water Quality
1. City -poor quality-
factories-polluted or diff.
temperature-thermal pollution-warmer=less dissolved oxygen
no trees
trash, oil, through storm drains

10. 2. Farm-good quality
some trees-but many cut down
less O2 & shade, no leaf food.
fertilizer washes into stream-causes algae to take over (Eutrophication)
Cows crush stream banks-sediment pollution
cow waste- excess nitrogen

11. 3. Forest-excellent
TREES:
shade-more dissolved O2 in
cold water
leaves make food
roots-prevent erosion

12. What was the environment around our sampling site?
Grass along banks keep erosion from going into river.
Man-made buildings and road which could allow for more run-off
Some trees and shrubs

13. Description of Experiment
Collecting Macroinvertebrates
Net Holders – Pulled Net Tight and held at 45 degrees. Nets were kept at the substrate base.
Kickers – Kicked 1 inch below substrate and walked 1 meter to kick net
Net was brought up in a scooping fashion and organisms were brought to the bank

14. Description of Experiment
Identifying Macroinvertebrates
Organisms were place on white plastic
Tweezers and spoons were used to put organisms that are alike.
Organisms were then identified and counted.

15. What is our problem or question for this study?
What is the water quality of the West Branch of the Susquehanna in Curwensville, PA?
Pass out paper for students to write.

16. You will then create a hypothesis
If the water quality is ___________ (Excellent, Good, Fair, or Poor), then there will be many ______________ (Intolerant, Moderately Intolerant, Fairly Tolerant or Very Tolerant) macroinvertebrates found.

17. Stream Ecology