sentences:  In the groves, riparian forests, and valley floors, there are enclaves of deciduous forests that favor the moist ground, which is constant almost all year; this allows them to avoid the consequences of the summer drought so characteristic of a Mediterranean climate.There we see a characteristic pattern, as we move outward from the edge of the riverbed, so that the woodlands that are most dependent on the aquifer are on the riverbank, that is, (alders and willow groves) and those less dependent on water are located further away, such as the (ash, elm, and poplar groves).These woodlands are formed by willows, poplars, alder, ash, elm and sometimes by Pyrenean oak ("Quercus pyrenaica"), lime trees, birches and hazel trees.