Optimal width of movement corridors for root voles Microtus oeconomus, Evenstad Field Station, Hedmark, Norway
Published source details
Andreassen H.P., Halle S. & Ims R.A. (1996) Optimal width of movement corridors for root voles: Not too narrow and not too wide. Journal of Applied Ecology, 33, 63-70
Published source details Andreassen H.P., Halle S. & Ims R.A. (1996) Optimal width of movement corridors for root voles: Not too narrow and not too wide. Journal of Applied Ecology, 33, 63-70
This study is summarised as evidence for the following.
Create or maintain corridors between habitat patchesAction Link
Create or maintain corridors between habitat patches
A replicated study in 1992 of a grassland in southeast Norway (Andreassen et al. 1996) found that root voles Microtus oeconomus used habitat corridors, but moved further in intermediate-width than in narrow or wide corridors. In intermediate (1-m-wide) corridors, voles moved an average of 205 m along the corridor in 12 hours. In narrow (0.4-m-wide) corridors, average movement was 35 m and, in wide (3 m-wide) corridors, was 75 m. Two 5 × 5-m habitat patches were connected by a 310 m-long corridor. Patches and corridor comprised dense, homogeneous meadow vegetation. Adult male voles were released, one in each habitat patch, at 08:00 h and the trial was terminated at 18:00 h. Fieldwork spanned August–October 1992, starting with the wide corridor. Corridor width was then reduced by mowing and herbicide use. Vole movements were monitored by radio tracking and footprint plates.