Appendix A. Statistical tables showing the results of the analyses of covariance comparing the number of species and species density between sites with and without groundwater discharge in the free-flowing Vindel and regulated Ume rivers.
TABLE A1. Results of ANCOVA describing variation in number of plant species in 1-m to 50-m wide riparian transects in the Vindel and Ume Rivers. Location is a random factor, groundwater type (discharge or non-discharge) a fixed factor, and substrate fineness a covariate. Significant P values are boldfaced.
Source of variation |
df |
MS |
F |
P |
1-m wide transects |
||||
Location |
19 |
260 |
5.96 |
<0.0001 |
Groundwater type |
1 |
2655 |
62.51 |
<0.0001 |
Substrate fineness |
1 |
5 |
0.12 |
0.74 |
Groundwater × substrate fineness |
1 |
529 |
12.45 |
0.003 |
Error |
17 |
53 |
||
5-m wide transects |
||||
Location |
19 |
296 |
5.13 |
<0.0001 |
Groundwater type |
1 |
2692 |
46.69 |
<0.0001 |
Substrate fineness |
1 |
3 |
0.05 |
0.82 |
Groundwater × substrate fineness |
1 |
441 |
7.64 |
0.013 |
Error |
17 |
58 |
||
25-m wide transects |
||||
Location |
19 |
320 |
4.11 |
0.003 |
Groundwater type |
1 |
3260 |
41.91 |
<0.0001 |
Substrate fineness |
1 |
7 |
0.10 |
0.76 |
Groundwater × substrate fineness |
1 |
469 |
6.03 |
0.025 |
Error |
17 |
78 |
||
50-m wide transects |
||||
Location |
19 |
297 |
4.08 |
0.003 |
Groundwater type |
1 |
3459 |
47.44 |
<0.0001 |
Substrate fineness |
1 |
28 |
0.38 |
0.54 |
Groundwater × substrate fineness |
1 |
503 |
6.90 |
0.018 |
Error |
17 |
73 |
TABLE A2. Results of ANCOVA describing variation in plant species density in 1-m to 50-m wide riparian transects in the Vindel and Ume Rivers. Location is a random factor, groundwater type (discharge or non-discharge) a fixed factor, and substrate fineness a covariate. Significant P values are boldfaced.
Source of variation |
df |
MS |
F |
P |
1-m wide transects |
||||
Location |
19 |
820 |
0.57 |
0.88 |
Groundwater type |
1 |
3756 |
2.62 |
0.12 |
Substrate fineness |
1 |
30 |
0.02 |
0.89 |
Groundwater × substrate fineness |
1 |
1943 |
1.36 |
0.26 |
Error |
17 |
1435 |
||
5-m wide transects |
||||
Location |
19 |
92 |
0.55 |
0.90 |
Groundwater type |
1 |
3058 |
18.26 |
<0.001 |
Substrate fineness |
1 |
1 |
0.003 |
0.95 |
Groundwater × substrate fineness |
1 |
786 |
4.53 |
0.048 |
Error |
17 |
|||
25-m wide transects |
||||
Location |
19 |
114 |
0.85 |
0.64 |
Groundwater type |
1 |
3525 |
26.09 |
<0.0001 |
Substrate fineness |
1 |
28 |
0.21 |
0.65 |
Groundwater × substrate fineness |
1 |
720 |
5.33 |
0.034 |
Error |
17 |
135 |
||
50-m wide transects |
||||
Location |
19 |
131 |
1.03 |
0.48 |
Groundwater type |
1 |
3733 |
29.46 |
<0.0001 |
Substrate fineness |
1 |
3 |
0.03 |
0.87 |
Groundwater × substrate fineness |
1 |
797 |
6.29 |
0.023 |
Error |
17 |
127 |