Your bag contains a sample of macroinvertebrates collected from your study site.
Clear your table- you will need lots of room! As you take out cards, you will create several rows.
Remove 1 card and place it on the table.
Remove a second card. If it is the SAME as the first card, place it beside the first card in a row. If it is DIFFERENT, start a new row underneath the first card.
Remove a third card. If it is the SAME as the second card, place it beside the second card. If it is DIFFERENT, start a new row.
Continue until all your cards are on the table.
To calculate the water quality index:
Total Number of Rows divided by Total Number of Organisms
Is it good?
0- 0.3 = POOR
0.3 - 0.6 = FAIR
0.6 - 1.0 = GOOD
Clear your table- you will need lots of room! As you take out cards, you will create several rows.
Remove 1 card and place it on the table.
Remove a second card. If it is the SAME as the first card, place it beside the first card in a row. If it is DIFFERENT, start a new row underneath the first card.
Remove a third card. If it is the SAME as the second card, place it beside the second card. If it is DIFFERENT, start a new row.
Continue until all your cards are on the table.
To calculate the water quality index:
Total Number of Rows divided by Total Number of Organisms
Is it good?
0- 0.3 = POOR
0.3 - 0.6 = FAIR
0.6 - 1.0 = GOOD