The United Nations has declared 2010 to be the International Year of Biodiversity. Biological diversity is the basis of all life. At a UN conference in 1992 Switzerland signed the biodiversity convention, obliging it to combat the extinction of species around the world. (Picture editor: Rolf Amiet)
Water: the Diemtigtal nature park in the Bernese Oberland. The Seebergsee.
Water: The Rhine Falls near Schaffhausen in eastern Switzerland, Europe's most powerful waterfall. To the left, the Laufen castle.
Forest: Sihlwald Wilderness Park near Zurich. The original beech grove was used to supply the city of Zurich with wood until the beginning of the 20th century. Today a new natural forest is growing, which is left in its natural state.
Forest: Biologically important pine forest, Hessenberg near Effingen, in northern Switzerland.
Alpine space: View of the Bernina Massif, Upper Engadine, from the campsite near the 'Morteratsch' station of the Bernina railway (1896 m).
Alpine space: Jungfraujoch - Top of Europe: Sphinx (3571 m) with view over the Aletsch Glacier.
Bay Bolete mushroom (Xerocomus badius)
(imagepoint / Dieter Möbus)
Slow-worm (Anguis fragilis)
Nigritella nigra, a species of orchid, in a meadow at an altitude of more than 2000m near the Sulzfluh peak.
A male Beautiful Demoiselle (Calopteryx virgo).
After and before: an Old World Swallowtail butterfly.
(Butterfly, imagepoint/Kurt Salzmann; caterpillar, imagepoint/McPHOTO-Online)
Wall lizard (Podarcis muralis)
The edible frog (Rana esculenta) in common duckweed (Lemna minor)
Female mallard with young (Anas platyrhynchos).
Two white storks (Ciconia ciconia) and one male Black Woodpecker (Dryocopus martius).
(both pictures: Ex-Press/Markus Forte)
Beaver (Castor fiber)
Pipistrelle bat (Pipistrellus pipistrellus)
Mountain hare (Lepus timidus) in the Engadine, canton Graubünden.
Two ibex on the Lisengrat in eastern Switzerland.
Various types of tomato...
... and berry.
... and apple and potato.
Yellow Wagtail (Motacilla flava) and Black-headed Wagtail (Motacilla flava feldegg) - both male.
A Common Nase (Chondrostoma nasus).