Table 2 Summary statistics of the GLM modelling of nutrient and chlorophyll-a relationships based on the data sampling by the hierarchical bootstrap for TP, TN and TN + TP models (mode (in bold) and 95% highest density interval)

From: Bimodality and alternative equilibria do not help explain long-term patterns in shallow lake chlorophyll-a

Averaged years

Number of lakes

 

TP

  

TN

  

TP & TN

 

Single year R2

Mean years R2

% change

Single year R2

Mean years R2

% change

Single year R2

Mean years R2

% change

1

902

0.44 (0.38–0.5)

  

0.35 (0.3–0.4)

  

0.46 (0.4 –0.51)

  

2

203

0.64 (0.53–0.72)

0.72 (0.61–0.77)

12.5

0.41 (0.31–0.51)

0.49 (0.39–0.58)

19.51

0.63 (0.54–0.72)

0.72 (0.62–0.77)

14.29

3

142

0.68 (0.55–0.76)

0.78 (0.66–0.84)

14.71

0.47 (0.32–0.55)

0.56 (0.46–0.67)

19.15

0.70 (0.55–0.77)

0.79 (0.66–0.85)

12.86

4

124

0.63 (0.52–0.75)

0.75 (0.65–0.85)

19.05

0.45 (0.32–0.56)

0.61 (0.51–0.71)

35.56

0.63 (0.51–0.76)

0.78 (0.63–0.85)

23.81

5

99

0.7 (0.58–0.78)

0.83 (0.77–0.87)

18.57

0.51 (0.38–0.63)

0.69 (0.60–0.77)

35.29

0.71 (0.60–0.79)

0.84 (0.79–0.88)

18.31

  1. Results of single-year data analysis are compared with multiple mean year data for increasing numbers of averaged years for models based on TP, TN and TP + TN and the percent change of R2 of single years versus averaged years is given.
Back to article page