Table 3 Summary of nested analysis of variance (ANOVA) results testing for effects of segment and season for variables related to macroinvertebrate assemblage structure.

From: Effects of sediment replenishment on riverbed environments and macroinvertebrate assemblages downstream of a dam

Variables

ANOVA

Season

Segment

Season [Segment]

F

P

F

P

F

P

Taxonomic richness

0.1

13.914

20.5

< 0.0001

1.6

4.050

Density

14.5

0.012

68.5

< 0.0001

2.6

1.605

H'

152.7

< 0.0001

9.1

0.016

8.8

0.019

Evenness

185.6

< 0.0001

0.2

14.734

7.0

0.059

%EPT

8.1

0.143

23.5

< 0.0001

1.7

3.638

#Burrower *

2.2

2.704

1.0

7.007

1.2

5.738

#Inorganic case bearer

44.0

< 0.0001

18.1

< 0.0001

17.1

< 0.0001

#Net spinner

1.5

0.223

22.3

< 0.0001

0.57

0.566

  1. Bold font denotes statistically significant effects after Bonferroni adjustments. H' = Shannon diversity; %EPT = the percentage of Ephemeroptera, Plecoptera, Trichoptera, FFG = functional feeding groups.
  2. Tukey 3factors (per season).
  3. *Not included chironomidae because genus of the family has various life forms.