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Table 1 Comparison of multivariate analysis using multi-group abundance taxa with Shannon diversity and Ecological Quality Class

From: A new tool for assessment and monitoring of community and ecosystem change based on multivariate abundance data integration from different taxonomic groups

Data set

River/Habitat

Bray-Curtis

p PERMANOVA

Δ Shannon

p U-test

Δ EQC

Δ EQC (av)

1

W

61

< 0.01

0.25

< 0.05

1

0

S

48

< 0.01

0.31

< 0.01

1

1

M

47

< 0.01

-0.04

> 0.05

1

0

L

74

< 0.05

-0.11

> 0.05

-1

0

G

48

< 0.01

0.80

< 0.001

0

0

2

R

29

< 0.001

0.32

> 0.05

0

0

O

33

< 0.001

0.13

> 0.05

0

1

D

31

> 0.05

-0.16

> 0.05

0

0

3

AG

34

< 0.01

-0.40

> 0.05

2

2

GO

61

< 0.05

0.01

> 0.05

0

1

MG

50

> 0.05

0.31

> 0.05

-1

0

P

67

> 0.05

0.17

> 0.05

-1

0

SR

28

< 0.05

0.07

> 0.05

0

0

W

79

> 0.05

0.14

> 0.05

0

0

  1. River/Habitat = Codes for the studied rivers/habitats; Bray-Curtis = Bray-Curtis Similarity between treatments; p PERMANOVA = p-values derived from PERMANOVA analysis between treatments; Δ Shannon = difference in Shannon diversity between treatments, p U-test = p-value derived from Mann–Whitney-U test between treatments; Δ EQC = difference in Ecological Quality Class according to Water Framework Directive, calculated following “one-out-all-out” combination rule; Δ EQC (av) = difference in Ecological Quality Class according to Water Framework Directive, calculated by averaging EQC values from diatoms, phytobenthos, macrophytes, macroinvertebrates and fishes. Abbreviations of river names in data set 1: W = Wiesent, S = Sächsische Saale, M = Moosach, L = Leitzach, G = Günz; abbreviations of habitats in data set 2: R = river stretches, O = oxbow stretches, D = drainage ditch; abrreviations of river names in data set 3: AG = Alte Günz, GO = Große Ohe, MG = Mühlangergraben, P = Perlenbach, SR = Südliche Regnitz, W = Wiesent.