Aquatic Macroinvertebrates Lab
description
Transcript of Aquatic Macroinvertebrates Lab
![Page 1: Aquatic Macroinvertebrates Lab](https://reader035.fdocuments.in/reader035/viewer/2022062520/568164f0550346895dd75a92/html5/thumbnails/1.jpg)
Aquatic Macroinvertebrates Lab
Using population sizes to assess the health of the environment
![Page 2: Aquatic Macroinvertebrates Lab](https://reader035.fdocuments.in/reader035/viewer/2022062520/568164f0550346895dd75a92/html5/thumbnails/2.jpg)
Water Stream Trays
![Page 3: Aquatic Macroinvertebrates Lab](https://reader035.fdocuments.in/reader035/viewer/2022062520/568164f0550346895dd75a92/html5/thumbnails/3.jpg)
BellworkHAVE SLATE, MARKER, & ERASER ON DESK!
1. Draw a simple food chain with a SHARK at the top. Label the producer, primary consumer, secondary consumer, and the tertiary consumer. (at least 4 organisms)
2. If the shark species in your food chain suddenly became endangered, give 3 possible reasons for this?
![Page 4: Aquatic Macroinvertebrates Lab](https://reader035.fdocuments.in/reader035/viewer/2022062520/568164f0550346895dd75a92/html5/thumbnails/4.jpg)
Why estimate population sizes?• List as many reasons as you can think ofHunting Permits
Endangered Species
Assess impact of Disasters, Disease,
Climate Change
Assess health of environment
To learn!
![Page 5: Aquatic Macroinvertebrates Lab](https://reader035.fdocuments.in/reader035/viewer/2022062520/568164f0550346895dd75a92/html5/thumbnails/5.jpg)
Why estimate population sizes?
Assess impact of Disasters, Disease,
Climate Change
To learn!
Assess health of environment
…look @ pollution levels using aquatic macroinvertebrates!
![Page 6: Aquatic Macroinvertebrates Lab](https://reader035.fdocuments.in/reader035/viewer/2022062520/568164f0550346895dd75a92/html5/thumbnails/6.jpg)
Where do we have running water in Arizona?
FWHS
Madera Canyon
![Page 7: Aquatic Macroinvertebrates Lab](https://reader035.fdocuments.in/reader035/viewer/2022062520/568164f0550346895dd75a92/html5/thumbnails/7.jpg)
Madera Canyon Bugs• May carefully pick up &
observe grasshoppers
• Make observations on slate- why would we use aquatic bugs instead of land bugs to assess health of the environment?
https://www.youtube.com/watch?v=3zivEx4oRQ4
![Page 8: Aquatic Macroinvertebrates Lab](https://reader035.fdocuments.in/reader035/viewer/2022062520/568164f0550346895dd75a92/html5/thumbnails/8.jpg)
How can you determine the health of an environment using
population numbers?Talk to your neighbor. Be ready to share.
![Page 9: Aquatic Macroinvertebrates Lab](https://reader035.fdocuments.in/reader035/viewer/2022062520/568164f0550346895dd75a92/html5/thumbnails/9.jpg)
Aquatic Macroinvertebrates & Water Quality Notes
![Page 10: Aquatic Macroinvertebrates Lab](https://reader035.fdocuments.in/reader035/viewer/2022062520/568164f0550346895dd75a92/html5/thumbnails/10.jpg)
What is an Aquatic Macroinvertebrate?
• Aquatic = live in water• Macro = can see w/out microscope• Invertebrate = no backbone
![Page 11: Aquatic Macroinvertebrates Lab](https://reader035.fdocuments.in/reader035/viewer/2022062520/568164f0550346895dd75a92/html5/thumbnails/11.jpg)
Why are Aquatic Macroinvertebrates good for
assessing environmental health?
They live near bottom of stream or lake, don’t move far, can’t escape pollution
![Page 12: Aquatic Macroinvertebrates Lab](https://reader035.fdocuments.in/reader035/viewer/2022062520/568164f0550346895dd75a92/html5/thumbnails/12.jpg)
Aquatic Macroinvertebrates react differently
• Intolerant macroinverts may die in polluted water
• Only see large populations in healthy streams & lakes
• Label these species with a on your sheet (= less pollution)
Mayflies
Stoneflies
Caddisflies
![Page 13: Aquatic Macroinvertebrates Lab](https://reader035.fdocuments.in/reader035/viewer/2022062520/568164f0550346895dd75a92/html5/thumbnails/13.jpg)
Aquatic Macroinvertebrates react differently
• Tolerant macroinverts inhabit spaces vacated by the others that died
• Large populations in polluted streams & lakes
• Label species these with a on your sheet (= polluted)
Midges
Tubifex Worms
Pouch Snails
![Page 14: Aquatic Macroinvertebrates Lab](https://reader035.fdocuments.in/reader035/viewer/2022062520/568164f0550346895dd75a92/html5/thumbnails/14.jpg)
Today’s ActivityYou will have 8 seconds at your water station to collect as many aquatic macroinvertebrates as possible (goal = 100+)
Sort bugs as a whole group
Fill in data table for # organisms in each group
![Page 15: Aquatic Macroinvertebrates Lab](https://reader035.fdocuments.in/reader035/viewer/2022062520/568164f0550346895dd75a92/html5/thumbnails/15.jpg)
Percent composition calculation practice
13 midges7 dobsonflies5 craneflies------Total =
13 / 25 = 0.52 >>> 52%28%20%
Total = 25
![Page 16: Aquatic Macroinvertebrates Lab](https://reader035.fdocuments.in/reader035/viewer/2022062520/568164f0550346895dd75a92/html5/thumbnails/16.jpg)
At your table• Materials person- clean all petri dishes &
sprinkle new soil on top to hide items
• Jefe- announce stream # & you are the head mathematician
• Recorder- make sure everyone writes down the correct stream # and % on their sheet
• Presenter- be ready to share data
![Page 17: Aquatic Macroinvertebrates Lab](https://reader035.fdocuments.in/reader035/viewer/2022062520/568164f0550346895dd75a92/html5/thumbnails/17.jpg)
Assess the water quality from your stream Jefe read instructions & get group started on
Data Table 2
6 If my group found 6 stoneflies, is this
what I write in data table 2?
![Page 18: Aquatic Macroinvertebrates Lab](https://reader035.fdocuments.in/reader035/viewer/2022062520/568164f0550346895dd75a92/html5/thumbnails/18.jpg)
Assess the water quality from your stream Jefe read instructions & get group started on
Data Table 2
2
8
Add all group scores to get
TOTAL
Recorder- Add water quality score
& assessment to board when
finished!
![Page 19: Aquatic Macroinvertebrates Lab](https://reader035.fdocuments.in/reader035/viewer/2022062520/568164f0550346895dd75a92/html5/thumbnails/19.jpg)
You can double check water quality with EPT/Midge ratio
Generally speaking, the more EPTs you have, the better the water quality
Mayflies (Ephemeroptera)Stoneflies(Plecoptera)Caddisflies (Trichoptera)
Mayflies
Stoneflies
Caddisflies
![Page 20: Aquatic Macroinvertebrates Lab](https://reader035.fdocuments.in/reader035/viewer/2022062520/568164f0550346895dd75a92/html5/thumbnails/20.jpg)
You can also assess water quality with EPT/Midge ratio
The more midges you have…the lower the water quality
Midges (Chironomidae)
Midges
![Page 21: Aquatic Macroinvertebrates Lab](https://reader035.fdocuments.in/reader035/viewer/2022062520/568164f0550346895dd75a92/html5/thumbnails/21.jpg)
EPT/Midge Ratio (on back of sheet)Mayflies (Ephemeroptera) = ____Stoneflies(Plecoptera) = ____Caddisflies (Trichoptera) = ____
Total EPT = ____
Ratio: Total EPT / Midges = _____
Higher ratios # = better water quality
![Page 22: Aquatic Macroinvertebrates Lab](https://reader035.fdocuments.in/reader035/viewer/2022062520/568164f0550346895dd75a92/html5/thumbnails/22.jpg)
Closure- do on backAfter the BP oil spill, many people were concerned about
the extent of the damage done to the Gulf aquatic environment.
1 paragraph w/ at least 3 vocab words from today: If you were asked to determine whether the Gulf has rebounded (i.e. is healthy again), explain what steps you would take & how you would know if the aquatic environment is healthy again.