Vegetation Ζones

Olympus is characterized by a wide variety of vegetation types formed by its intense topographic relief, short distance from the sea and the existence of many micro-environments1. In general, four vegetation zones can be distinguished on Mount Olympus. However, due to the intense variations in short-term environmental conditions, these zones are often not entirely distinct because species that define a particular vegetation zone may enter into other vegetation zones.


Zone of broad-leaved evergreens

The first zone of broad-leaved evergreens (Quercetalia ilicis) is found at an altitude of 300 to 500 meters. The area is dominated by shrubs and low-rising trees such as the holm oak (Quercus ilex), Greek strawberry tree (Arbutus adrachnae), kermes oak (Quercus coccifera), strawberry tree (Arbutus unedo), prickly Juniper (Juniperus oxycedrus), etc. Characteristic deciduous species at this altitude include manna ash (Fraxinus ornus), Montpellier maple (Acer monspessulanum), Judas-tree (Cercis siliquastrum), European smoke tree (Cotinus coggygria) and others.

Broad-leaved evergreen forest

Forest of beech-fir and mountain conifers

Forest of beech-fir and mountain conifers (Fagetalia) stretch from 600 to 1400 meters, wherein black pines (Pinus nigra) dominate in pure stands. In smaller clusters and stands, one can encounter Bulgarian fir (Abies borissi-regis), European beech (Fagus sylvatica), wych elm (Ulmus glabra), yew (Taxus baccata), hazel (Coryllus avellana), Cornelian cherry (Cornus mas), cherry plum (Prunus cerasifera) and a variety of herbaceous plants.


Zone of cold-hardy conifers

At elevations between 1400 and 2500 m, the zone of cold-hardy conifers (Vaccinio-Picetalia) emerges. The predominant species of pine is the rare Bosnian pine (Pinus heldreichii), which makes its first appearance at 1100 m, gradually replacing black pine (Pinus nigra) and forming unmixed forests up to 2000 meters. Areas with Bosnian pine are usually dry with rocky slopes. The vegetation that grows in this region is adapted to specific local conditions and is represented by characteristic shrubs, grasses, chasmophytes, while the flora includes many endemic species of the Balkans.

 

Pinus heldreichii
Pinus heldreichii

The non-forested high mountain meadows and grasslands

Above 2500 meters, which is also the highest treeline in the Balkans, there are the non-forested high mountain meadows and grasslands (Astragalo-Acantholimonetalia). On Mount Olympus, these meadows display a great diversity and their floral composition includes many rare wildflowers, most of which are endemic to Greece and the Balkan Peninsula.

Alpine grasslands in front of the Throne of Zeus

Azonal forests

In addition to the above vegetation zones, azonal forests can be found along the canyons and gorges of Mount Olympus. In the presence of continuous water flow, oriental plane trees (Platanus orientalis) and willows (Salix alba, Salix cinerea) dominate. Similarly, temperate deciduous broad-leaved forests (Quercetalia pubescentis) are fragmented and scattered at altitudes of 400 to 600 meters. Different species of oak such as Hungarian oak (Quercus frainetto), sessile oak (Q. petraea), and downy oak (Q. pubescens) can be found at these localities2.

Riparian vegetation with Salix eleagnos along the Enipeas river

Gallery


NATURA 2000 Habitat Types

Olympus is included in the European NATURA 2000 Network as a Special Area of Conservation (SAC) and a Special Protection Area for Birds (SPA) under the code name "Mount Olympus-GR1250001”.

Following the results of the programme "Surveillance and evaluation of the conservation status of habitat types of European community interest in the area of jurisdiction of Olympus National Park Management Agency"2, 19 habitat types were recorded under the European Directive 92/43/EEC "On the conservation of natural habitats and of wild fauna and flora". Among them are included four priority habitatsa (9530, 6230, 9180, 9580), whereas those of the alpine zone, namely the meadows and rocky formations (6170, 6230, 8140, 8210), are of particular importance since the majority of endemic species of Olympus are found here.

It is also worth mentioning that priority habitat 9530 * - (Sub-)Mediterranean pine forests with endemic black pines occupies almost 40% of the NATURA 2000 site, while habitat type “95A0- High oro-Mediterranean pine forests” is of equal importance with Pinus leucodermis forming the highest forest limits in the Balkans.

Α/ΑCODENAME
13240Alpine rivers and their ligneous vegetation with Salix elaeagnos
24060Alpine and boreal heaths
34090Endemic oro-Mediterranean heaths with gorse
45310Laurus nobilis thickets
56170Alpine and subalpine calcareous grasslands
66230*Species-rich Nardus grasslands, on siliceous substrates in mountain areas (and sub-mountain areas, in Continental Europe)
78140Eastern Mediterranean screes
88210Calcareous rocky slopes with chasmophytic vegetation
99130Asperulo-Fagetum beech forests
109140Medio-European subalpine beech woods with Acer and Rumex arifolius
119150Medio-European limestone beech forests of the Cephalanthero-Fagion
129180*Tilio-Acerion forests of slopes, screes and ravines
1391Μ0Pannonian-Balkanic turkey oak — sessile oak forests
149270Hellenic beech forests with Abies borisii-regis
1592C0Platanus orientalis and Liquidambar orientalis woods (Plantanion orientalis)
169340Quercus ilex and Quercus rotundifolia forests
179530*(Sub-)Mediterranean pine forests with endemic black pines
1895A0High oro-Mediterranean pine forests
199580*Mediterranean Taxus baccata woods

Priority habitat types of EU Directive 92/43/ΕEC are denoted with an asterisk*.