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
Cicindela sylvatica Cicindela sylvatica Cicindela sylvatica is a tiger beetle, commonly known as the wood tiger beetle or heath tiger beetle. It is the largest of the British tiger beetles with a length of between . It is black in colour with a blue tinge, more pronounced on the underside, and sometimes appears with a bronze sheen. The beetle occurs throughout Europe with the exception of the Mediterranean and the extreme north. In the UK, it is found in England. The beetle has been given priority status under the UK Biodiversity Action Plan (UK BAP) and has been included in the English