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Table 3 Student-Newman-Keuls' (SNK) Test Comparison of Chlorophyll a concentrations for Control, Nitrogen (N), Phosphorus (P), and Nitrogen plus Phosphorus (N + P) treatments using Passive Diffusion Periphytometer in the Bosque River Watershed during the period of April 5–19, 1998.

From: Measuring variability in trophic status in the Lake Waco/Bosque River Watershed

Site

Treatment

Number of Replicates

Mean Chl. a (μg cm-2)

Standard Deviation (μg cm-2)

SNK Group (α = 0.05)

NC

Control

10

0.71

0.26

 

B

C

 

N

10

0.89

0.55

 

B

C

 

N+P

10

1.21

0.60

A

B

 
 

P

10

1.36

0.54

A

  

MB

Control

10

0.56

0.27

  

C

 

N

10

0.73

0.24

 

B

C

 

N+P

10

0.91

0.63

 

B

C

 

P

10

0.85

0.40

 

B

C