Near Imola, along the valley of the stream Correcchio, a precious evidence of the ancient landscape of the lower stretch of the hills survives. In the background of the recent urban expansion, Frattona compact forest mantle preserves a good degree of naturalness. The peculiar substratum characterizing the area is geologically known as "Imola sands", called in the 19th century "yellow sands" for the presence of iron oxides: it formed in the sea about one million years ago and has returned interesting animal and plant fossils. Giuseppe Scaravelli, a forerunner of Italian geology, investigated the territory since 1840 and discovered precious finds of big terrestrial mammals and tools dating back to the Lower Paleolithic. These finds are preserved today in Imola, in the museum that has been dedicated to them.
Further information (Italian text)
The Reserve is populated by the wildlife
characterizing the stretch of the hills adjacent the plain, although
the forest environment favors a richer and more diversified presence
with respect to the cultivated areas or the coppice forests.
Among
the mammals, you can easily sight the squirrel, while other rodents
(fat dormouse, common dormouse, wood mouse) have nocturnal habits; only
the bank vole can sometimes be observed during the day.
Hares, hedgehogs, and tiny shrewmice are rather common. The area is
also populated by carnivorous animals like fox, badger, stone marten,
polecat, and weasel and, with a bit of luck, you may sight the red
deer, which is rapidly expanding after its reintroduction in the
Apennines. The investigations carried out until present times have
given the opportunity to record in the Reserve the presence of seven
species of bats.
The forests are characterized by bird species
living in these rare and localized environments. Among the bird
species, woodpeckers stand out: green woodpecker, great spotted
woodpecker, or other species depending, during the reproduction stage,
on the holes hollowed by the former.
The green woodpecker and the
great spotted woodpecker hollow into trunks or big branches to find
larvae and adult xilophagous insects and to create large holes with a
narrow entrance where they can nest safe from predators.
Further information (Italian text)
The arboreal formations covering almost all the area of the reserve are
only apparently uniform. A thorough investigation shows that the forest
looks like a mosaic: the different areas differ for exposure and slope,
light availability, soil thickness and features, humidity, nature and
intensity of human activities and, as a consequence, have a different
vegetation.
The southern strip, above all where the forest is limited
by cultivated fields, develops on a luminous plateau which is rather
dry during the summer. The area is covered with a beautiful high forest
of young oaks dominated by downy oaks and sessile oaks, almost
indistinguishable for the presence of several hybrids often growing
together with other species.
Frattona Forest develops along the right bank of Rio Correcchio, a
tributary of Sillaro, which forms its natural border in the north,
between 80 and 140m asl.
It is mainly characterized by a northern
exposure: only a small strip covers the opposite slope and is
relatively warmer. The morphology of the area is deeply linked to the
outcropping lithologic units. As a matter of fact, on the slope with a
southern exposure dominated by cemented yellow sands, the slope is
rather steep; on the contrary, on the slope with a northern exposure,
the lithotypes are less cemented and the slope is gentler. Some slope
breaks are due to the presence of cemented alluvial stretches and minor
cuts.
Further information (Italian text)