Table 2 Kolmogorov–Smirnov (KS) test p-values comparing the erratic and persistent regimes; Kruskal–Wallis (KW) test p-values comparing the four empirically classified streamflow regime types, and post-hoc Dunn’s test results showing the number of pairs of streamflow regime types exhibiting significant differences (p-value < 0.05) in catchment characteristics.

From: From river flow regime diversity to proxies for hydrologic homogeneity a Canada-wide case study

Catchment Characteristics

KS p-value

KW p-value

Dunn’s # of pairs

Catchment area

< 0.0001

< 0.0001

6

Latitude

0.001

< 0.0001

6

Elevation

< 0.0001

< 0.0001

5

Gravelius index

< 0.0001

< 0.0001

2

Soil depth

0.001

0.0045

2

Topsoil clay

< 0.0001

< 0.0001

3

Topsoil silt

< 0.0001

< 0.0001

5

Topsoil sand

< 0.0001

< 0.0001

5

Subsoil clay

< 0.0001

< 0.0001

5

Subsoil silt

< 0.0001

< 0.0001

6

Subsoil sand

< 0.0001

< 0.0001

5

Forest

< 0.0001

< 0.0001

3

Shrubland

< 0.0001

< 0.0001

4

Grassland

0.003

< 0.0001

5

Lichen

< 0.0001

< 0.0001

5

Wetland

< 0.0001

< 0.0001

2

Cropland

< 0.0001

< 0.0001

5

Barren

< 0.0001

< 0.0001

5

Urban

< 0.0001

< 0.0001

5

Water

< 0.0001

< 0.0001

5

Semi permanent water

< 0.0001

< 0.0001

5

Permanent water

< 0.0001

< 0.0001

5