Table 2 Variation of diversity and functional diversity of terrestrial and aquatic Phytophthora communities explained by temperature, precipitation, the land use of the site (urban, agricultural or forest), and the year of the survey

From: Contrasting distribution patterns between aquatic and terrestrial Phytophthora species along a climatic gradient are linked to functional traits

 

Species richness

Shannon index

Simpson index

Pielou’s evenness

Functional richness

Functional dispersion

Functional evenness

Chi-square

P

F- value

P

Chi-square

P

Chi-square

P

Chi-square

P

Chi-square

P

Chi-square

P

Terrestrial Phytophthora spp. (Non-clade 6 spp.)

 Total annual precipitation

27.06

<0.0001 (+)

16.05

0.00012 (+)

8.48

0.0036 (+)

0.16

0.69 (–)

8.69

0.0032 (+)

3.8

0.051 (+)

4.6

0.032 (+)

 Mean annual temperature

3.95

0.047 (–)

0.14

0.71 (–)

0.14

0.70 (+)

4.99

0.025 (+)

0.82

0.37 (−)

0.20

0.66 (+)

1.7

0.19 (+)

 Land use

0.054

0.97

0.06

0.94

0.014

0.99

0.022

0.99

1.79

0.41

3.76

0.15

3.22

0.20

 Year

24.39

<0.0001 (+)

16.4

<0.0001 (+)

11.31

0.00077 (+)

1.64

0.20 (+)

6.21

0.013 (+)

0.23

0.63 (+)

0.40

0.53 (+)

Aquatic Phytophthora spp. (Clade 6 spp.)

Total annual precipitation

2.01

0.16 (−)

0.14

0.71 (−)

0.33

0.56 (−)

0.011

0.92 (+)

0.12

0.72 (+)

0.29

0.59 (−)

0.80

0.37 (−)

 Mean annual temperature

0.15

0.69 (+)

4.57

0.034 (−)

4.56

0.033 (−)

7.71

0.0055 (−)

8.48

0.0036 (−)

6.4

0.011 (−)

7.51

0.0061 (−)

 Land use

6.44

0.04

4.04

0.020

7.07

0.029

4.36

0.11

6.16

0.046

3.35

0.19

2.17

0.33

 Year

16.4

<0.0001 (+)

29.78

<0.0001 (+)

27.98

<0.0001 (+)

15.49

<0.0001 (+)

5

0.025 (+)

31.57

<0.0001 (+)

13.24

0.00027 (+)

  1. Significant P-values are shown in bold. “(+)” or “(−)” signs represent a positive or negative association with climatic factors, respectively. For the case of the factor “Year”, a positive sign indicates that the values were higher in the survey in 2014 than in 2013. For diversity parameters (species richness, Shannon index, Simpson index, and Pielou’s evenness), all operational taxonomic units (OTUs) identified at the species and clade level were included (total OTUs = 50). For functional diversity parameters (functional richness, functional dispersion, and functional evenness), only OTUs identified at the species level were included in the analysis (total OTUs = 36)
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