Table 1
Habitat variables potentially affecting otter distribution recorded for each transect (*: excluded from subsequent analysis after testing for collinearity).
| N | Acronym | Variable | Measure |
|---|---|---|---|
| 1* | Dis | Discharge | Classes by eye (0–3) |
| 2 | Vel | Water speed | m/s |
| 3 | Tur | Water turbidity | Classes by eye (0–4) |
| 4* | WW | Width of wet riverbed | (m) |
| 5 | RW | Width of the whole riverbed | (m) |
| 6 | RD | Water depth | (m) |
| 7 | Pol | Pollution | Classes by eye (0–3) |
| 8 | VeW | Width of emerged aquatic vegetation | (m, on both banks) |
| 9 | RiV | Area occupied by riparian vegetation | % cover in a 30 m belt on both banks |
| 10* | WaV | Aquatic vegetation cover | % cover |
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