W-Alps / Alps of Valais-Entremont, (Europa , Switzerland)

Region coordinates

Latitude 46.01 DD
Longitude 7.23 DD

Summits

BOV 3212 m nival
PAR 2989 m subnival (alpine-nival ecotone)
BRU 2550 m alpine (or lower/upper alpine ecotone)
LAL 2360 m treeline ecotone
CH-VAL,
                                     view of three summits in Val d'Entremont.                                      © Jean-Paul Theurillat

Short description & land use (current/history)

The target region is used as summer pasture for a long time (probably more than 500 years). Grazing was important in every alpine swards and subalpine pastures up to 1850. It slowly decreased after this, and completely stop on our summits during the 20th century. The two upper summits (Pte du Parc and Pte de Boveire) were probably never grazed, except by chamois or ibex. Now the summits are rarely visited by trampers.

Vegetation boundary lines

Current forest line (closed forest seen from distance): locally between 2020 and 2100 m Potential natural forestline (based on the position of trees >8 m): 2140-2200 m. Current treeline (based on the position of trees 3-8 m): 2220-2280 m. Potential natural treeline (based on the position of tall shrubs 0.5-3 m): 2340-2490 m

Centre alpien de Phytogeographie - Fondation J.-M. Aubert

Université de Lausanne, FGSE, Institut des dynamiques de la surface terrestre

Pascal Vittoz
vice head of target region
Pascal.Vittoz@unil.ch