Table 7: Regressions to identify the indicators that account best for variation in overall stream health of separate rivers and for all rivers combined
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| Taieri/Kakaunui Rivers |
Hakatere |
Tukituki River |
Combined data |
||||
|---|---|---|---|---|---|---|---|
| Indicator |
% var |
Indicator |
% var |
Indicator |
% var |
Indicator |
% var |
Water quality |
56% |
Water quality |
73.5% |
Water quality |
80.6% |
Water quality |
53.3% |
Use riparian margin |
10.8% |
Catchment land use |
7.1% |
Flow |
8% |
Riparian vegetation |
15.6% |
Channel modification |
5.5% |
Water clarity |
5.4% |
Flow |
1.7% |
||
Flow |
4.4% |
Bed condition/ sediment |
3.7% |
Bed condition/ sediment |
1.2% |
||
Catchment land use |
ns |
Channel modification |
2.9% |
||||
Total |
76.0% |
Total |
92.6% |
Total |
86.6% |
Total |
71.8% |
Note: Although catchment land use did not contribute significantly [ns] to the CSHM for the Taieri/Kakaunui Rivers it was included in the original calculation. This indicator was a significant component of the CSHM for the Hakatere.
