Forest migration northward. Though "Fagus" and "Picea" populations did not expand directionally, they have grown in the Scandinavian range. The movement of "Picea" species in the past 1000 years has shown a strong connection to climate change through a model comparison. In the more recent past, there has been documentation of elevation shifts in distribution of many core forest tree species of Catalonia. The populations of two tree species (European Beech, "Fagus sylvatica"; and Holm Oak, "Quercus ilex") were evaluated in their dynamics over elevations through time. Generally, Holm Oak reside lower on mountain slopes than does European Beech. In the past
Luzula sylvatica grow on acidic soils in damp habitats. "L. sylvatica" can be found on stream banks and well-drained, open woodland, as well as in open ground and rock ledges and peaty heath moors. Despite its preference for acidic soils, it can tolerate most soil pH levels. The leaves of "Luzula sylvatica" are picked in winter by golden eagles to line their eyries. The flowers and seeds of "L. sylvatica" are also the sole food source for the larvae of the "Coleophora sylvaticella" moth. "Luzula sylvatica" is commonly used in horticulture — its thick, patch-forming habit (which allows the plant to act