PiscesLogoSmallerStill  Q1

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This is simply the agreement (number of variables or species which have the same abundance in the two samples) divided by the total number of variables or species.

 

Example:  Ten species at two sites:

 

 

Site 1

Site 2

Agreement

Sp. 1

1

3

0

Sp. 2

4

4

1

Sp. 3

6

9

0

Sp. 4

22

23

0

Sp. 5

7

7

1

Sp. 6

5

5

1

Sp. 7

5

2

0

Sp. 8

8

4

0

Sp. 9

9

9

1

Sp. 10

10

1

0

 

 

4

 

Q1 = 4 agreements/10 species = 0.4