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Table 3

Proportion of variance explained (adjusted R 2) by significant principal coordinates of neighborhood matrices (PCNM) variables for benthic diatom assemblages from January 2011 to December 2016 at each site.

PCNM variable Site


Name Period JC01 JC02 XX01 XX02
1 72 2.8 3.0 6.9 1.1
2 51   1.7 2.8 1.9
3 37   1.2   1.1
4 30 1.8 1.7 1.4  
5 25     1.0  
7 18 2.8 2.4 2.4  
8 16     1.1  
10 14   1.7   1.1
11 12 4.5 2.7 1.6 1.3
12 11 2.1 1.8 2.4 2.2
13 10     1.3  
14 10       1.1
15 9     1.8  
16 9       1.1
18 8       1.9
19 7 1.8   1.1  
20 7 1.0   1.1  
21 7       1.1
23 6 1.8     1.1
24 6 1.0   1.0  
27 5   1.2    
28 5 1.1      
29 5     3.1  
31 5   2.4    
32 4 1.8      
35 4 1.0      
1–12 month periodicities 16.1 8.1 13.2 9.7
13–24 month periodicities 2.8 4.1 3.5 1.1
25–36 month periodicities 1.8 1.7 2.4 0.0
37–48 month periodicities 0.0 1.2 0.0 1.1
49–60 month periodicities 0.0 1.7 2.8 1.9
61–72 month periodicities 2.8 3.0 6.9 1.1
Total 23.6 19.9 28.8 14.9

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