An ecotone is a transition area between two biological communities, where two communities meet and integrate. It may be narrow or wide, and it may be local or regional. An ecotone may appear on the ground as a gradual blending of the two communities across a broad area, or it may manifest itself as a sharp boundary line.
Reed beds are a common form of lakeside ecotone. The beds tend to accumulate organic matter which is then colonised by trees, forcing the reeds further into the lake.
Fig.1 & 2 show simple ecotones with equal and homogeneous surfaces in both cases. Fig.3 shows an inclusion of each medium in the other, creating multiple ecotones, which are shown in a more complex form in figure 4. Fig. 5 & 6 show the edges of forests or banks treated in such a way as to lengthen the ecotone considerably without excessively modifying the environment. Fig.7 shows a common interpenetration of media (such as that found at the edge of a forest). Fig.8 shows an ecotone that could have been formed by an animal modifying its environment.
Mont Ventoux is a mountain in the Provence region of southern France, located some 20 km northeast of Carpentras, Vaucluse. On the north side, the mountain borders the department of Drôme. At 1,910 m (6,270 ft), it is the highest mountain in the region and has been nicknamed the "Beast of Provence", the "Giant of Provence", or "The Bald Mountain". It has gained fame through its inclusion in the Tour de France cycling race; in 2009 it was the scene of the first penultimate-day mountain top finish in the Tour de France, with Alberto Contador sealing his yellow jersey.
South side of the summit of Mont Ventoux
North side of the summit of Mont Ventoux
Mont Ventoux as seen from Avignon, around 50 km (30 miles) away.
Mont Ventoux as seen from the town of Roussillon.
