Derborence 2

Pinus sylvestris, Abies alba, Larix decidua, Picea abies


Click on the photos to view them full size.
Derborence ¤ 4046
Scenery
- View on the lake of Derborence from the North slope.
(West side of the lake)
Derborence, Switzerland
Derborence ¤ 4033
Information Panel
- Texte franšais sur la photo agrandie
"The landslide of Les Diablerets
In 1714 and 1749, big masses of rocks fell down from the cliff under the summit of Les Diablerets.
About 50 millions of square meters of material covered the field, burrying 100 houses, killing several people.
Now the fallen mass is about 5 km long upon which a pioneer forest is establishing.
The mass of stones blocked the stream of the Derbonne River creating the lake of Derborence, the most recent natural lake of Switzerland."
Derborence, Switzerland
Derborence ¤ 4034
Information Panel
- Texte franšais sur la photo agrandie
"The lake of Derborence and its alluvial deposit
The streams from the North and from the West are depositing, especially when there are big thunderstorms, large amounts of sediment (alluvium) in the lake. They are forming deltas which go always deeper inside the lake.
In the long term, the bottom of the lake, not deep, fills in with alluvium.
In Fall, the lake can be completely empty by lack of water supply, evaporation and infiltration of the water.
One small dam was built in Fall 1976 at the exit of the lake with the aim to increase the water surface.
On the long term, the safeguard of the lake can only be secured by the excavation of the alluvium."
Derborence, Switzerland
Derborence ¤ 4035
Information Panel - Texte franšais sur la photo agrandie
"The virgin forest of Derborence
The forest on the right side of the Derbonne, at the South of the lake, remained untouched because of the difficulty of access to exploit it.
It developped itself without any human influence and it is considered as the last virgin forest of Silver Fir (Abies alba) in Switzerland.
Its value is beyond any price for the scientific study of natural plants associations.
Details:
Age of the trees: 300-350 years old
Max. height of the trees: 45 meters
Largest diameter: 160 cm
Volume of one giant tree: 30 cubic meters
The Swiss League for the Nature Protection purchased an area of 50 hectares in 1959 with the aim of permanent protection."
Derborence, Switzerland
Derborence ¤ 4036
Scenery
- View on the lake of Derborence from the North slope.
(East side of the lake)
Derborence, Switzerland
Derborence ¤ 4026
Scenery
- View on the forest of Derborence in the mist.
Derborence, Switzerland
Abies alba ¤ 4028
Scenery
- View on the forest of Derborence in the mist.
The biggest tree on the photo is a Larix decidua.
Derborence, Switzerland
Pinus mugo uncinata ¤ 4089
Pinus mugo subsp. uncinata
- Young tree
View on the forest of Derborence (background)
Derborence, Switzerland
Pinus mugo uncinata ¤ 4073
Pinus mugo subsp. uncinata
- Young tree, with candles.
Derborence, Switzerland

- (Close-up)

Pinus mugo uncinata
Pinus mugo uncinata ¤ 4084
Pinus mugo subsp. uncinata
- Shoot with new growth and young and old cones.
Derborence, Switzerland
Pinus mugo uncinata ¤ 4031
Pinus mugo subsp. uncinata
- Old cone
Derborence, Switzerland
Pinus mugo uncinata ¤ 4074
Pinus mugo subsp. uncinata
- Old cone (after rain)
Derborence, Switzerland
Pinus mugo uncinata ¤ 4080
Pinus mugo subsp. uncinata
- Young cones
Derborence, Switzerland
Pinus mugo uncinata ¤ 4075
Pinus mugo subsp. uncinata
- Candles
Derborence, Switzerland
Larix decidua ¤ 4054
Larix decidua
- Crown
One the right: Picea abies
Derborence, Switzerland
Larix decidua ¤ 4055
Larix decidua
- Tree
One the right: Picea abies
Derborence, Switzerland
Larix decidua ¤ 4040
Larix decidua
- Bark
Derborence, Switzerland
Abies alba ¤ 4053
Abies alba
- Bark of young tree
Derborence, Switzerland

- Shoots with new growth

Abies alba
Abies alba ¤ 4047
Abies alba
- Shoots with new growth (after rain)
Derborence, Switzerland

- Shoots with new growth (close-up)

Abies alba
Picea abies ¤ 4042
Picea abies
- Shoots with beginning of new growth
Derborence, Switzerland

Salamandra nigra
- Endangered species

Abies alba

Photos : © Arboretum de Villardebelle


June 2002
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