Quercus cerris
Quercus cerris in Europe: distribution, habitat, usage and threats
D. de Rigo, C. M. Enescu, T. Houston Durrant, G. Caudullo
Turkey oak (Quercus cerris L.) is a deciduous tree native to southern Europe and Asia Minor, and a dominant species in
the mixed forests of the Mediterranean basin. Turkey oak is a representative of section Cerris, a particular section within
the genus Quercus which includes species for which the maturation of acorns occurs in the second year.
Quercus cerris L., commonly known as Turkey oak, is a large
fast-growing deciduous tree species growing to 40 m tall witha trunk up to 1.5-2 m diameter1 , with a well-developed rootsystem2 . It can live for around 120-150 years3 . The bark ismauve-grey and deeply furrowed with reddish-brown or orange
bark fissures4, 5 . Compared with other common oak species, e.g.
sessile oak (Quercus petraea) and pedunculate oak (Quercusrobur), the wood is inferior, and only useful for rough work suchas shuttering or fuelwood1 . The leaves are dark green above andgrey-felted underneath6 ; they are variable in size and shape but
are normally 9-12 cm long and 3-5 cm wide, with 7-9 pairs of
triangular lobes6 . The leaves turn yellow to gold in late autumn
and drop off or persist in the crown until the next spring, especiallyon young trees3 . The twigs are long and pubescent, grey orolive-green, with lenticels. The buds, which are concentrated
on the tip of the twigs, are egg-shaped and hairy and, typically,
they are surrounded by long twisted whiskers6 . The flowers aremonoecious and wind-pollinated, appearing in April-May. The
fruit is a large acorn stalkless, 2-3.5(5) cm long and 2 cm broad.
The acorn cup is densely covered with bristles5 . Turkey oak acorns
mature over a two year period, but the acorn crop is abundantand it germinates readily and can be easily propagated1, 3, 7.

Distribution
The range of this species extends from southern Europe
to Asia Minor3 . Across its distribution range, it is particularlypresent in the Balkan and Italian Peninsulas3 . The western
limit of its natural range is France and its northern limit is inGermany, continuing eastward through Austria, Switzerland,
eastern Czech Republic, Slovakia and Hungary3 . It is one of 12
native oak species in Albania. In Bulgaria it occupies drier andmoderately rich habitats in the plain and hilly regions8 , where it
forms large forests with other oak species (e.g. Quercus frainetto,Quercus pubescens) and other mixed broadleaves including fieldmaple (Acer campestre), elm (Ulmus minor) Oriental hornbeam(Carpinus orientalis) and manna ash (Fraxinus ornus)9 . It is also
important in Hungary, where it forms over 11 % of the forested
area in the country10 . In Italy, it grows from sea level up to theFrequency< 25%25% - 50%
50% - 75%
> 75%
Chorology
NativeIntroduced

Large shade tree in agricultural area near Altamura (Bari, South Italy).
(Copyright Vito Buono, www.actaplantarum.org: AP)

Map 1: Plot distribution and simplified chorology map for Quercus cerris.
Frequency of Quercus cerris occurrences within the field observations as reportedby the National Forest Inventories. The chorology of the native spatial range forQ. cerris is derived after Meusel and Jager; and Jalas and Suominen25, 26 .

Apennines and covers around 280 000 ha over the peninsula,frequently occurring together with Hungarian oak (Q. frainetto)9 .
It is also widely distributed in Slovenia, most frequently in the
sub-mediterranean regions of Kras, Brkini and Tolminsko, but it
also grows on warm and dry steep slopes in the continental partsof the country9 . In the case of a warming climate, the species
is expected to show a range shift North11 . Turkey oak has been
introduced in some other European countries including the UKand France3 , and it is also planted in North America4 , Ukraine,Argentina and New Zealand3 .

can grow in a wide range of soil types including weakly acid14 ,pseudogley12 , or even shallow calcareous soils, as long as they
are not too dry1 . When established it devlops a taproot and deep
lateral root branches, helping it to remain windfirm3 . It is lightdemanding but can grow under a light woodland canopy1 . It has
many pioneer characteristics, including good germination rates ofseeds and fast early growth. It also has a high resprouting capacity,
making it particularly suitable for coppicing and pollarding3 .

Habitat and Ecology
Turkey oak has a good adaptability to a variety of different
site conditions. It is relatively tolerant to drought (more than theother oak species of the same region)3, 12 , air pollution9, 13 andUncertain, no-data
Marginal/no presence < 5%
Low presence 5% - 10%

Forest dominated by Turkey oak in the Košutnjak Forest Park
near Belgrade (Slovenia).

Mid-low presence 10% - 30%(Copyright Stefanst, commons.wikimedia.org: PD)

Medium presence 30% - 50%Mid-high presence 50% - 70%
High presence 70% - 90%
Very-high presence > 90%

Map 2: High resolution distribution map estimating the relative probability of presence.

Importance and Usage
The wood of Turkey oak has relatively few uses due to
its tendency to crack and its lower technological quality1 . It isfrequently used as firewood, having almost the same calorificvalue as hornbeam or beech12, 15 . In past years the wood wasused for railway sleepers9, and it is still used for timber production

Dark-green leaves with 7-9 pairs of lobes.
(Copyright Enrico Romani, www.actaplantarum.org: AP)

148 European Atlas of Forest Tree Species | Tree species

Quercus cerrisin the eastern part of its range, where the wood quality is at its
best3 . It has a useful role in soil conservation, erosion control
and reforestation of bare soils because of its ability to establish
and grow quickly in a range of soil types3 . Turkey oak is also
often planted in urban areas as an ornamental tree as it is an
attractive and well-formed tree1, 3 . The acorns and young coppice
shoots represent an important source of food for animals in
Mediterranean agro-silvopastoral systems3 . It is used in traditional
Mediterranean medicine for numerous purposes, including antiinfective treatments, and there is some evidence that it could be
used against the pathogen Staphylococcus aureus16 .

Uncertain, no-data
Tundra, cold desert
Negligible survivability
Low survivability
Mid-low survivability
Medium survivability
Mid-high survivability
High survivability

Red female flower with fleshy stigmas blossoming with new leaves in spring.
(Copyright Graziano Propetto, www.actaplantarum.org: AP)

Threats and Diseases
The fungi Discula quercina, Hipparion mediterraneumand Biscogniauxia mediterranea have been reported to cause
potentially severe infections to Turkey oak trees17-20 . Hypoxylon
mediterraneum can contribute to oak decline in drought-stressed
trees21 . The gypsy moth Lymantria dispar is one of the mostimportant leaf-chewing insects, attacking summer foliage3 .
Turkey oak is one of the alternate hosts of the knopper gall wasp
Andricus quercuscalicis, which then goes on to infect pedunculateoaks in the next part of its life cycle1, 22 . The gall aphid Phylloxera
quercus is also damaging in many European countries3 . Turkey
oak is vulnerable to root pathogens of the genus Phytophthora

Map 3: High resolution map estimating the maximum habitat suitability.

(P. cinnamomi, P. ramorum)23 . Furthermore, it is moderately
susceptible to Cryphonectria parasitica23 . In urban areas the oakprocessionary moth Traumatocampa processionea may affecttrees planted in green spaces24 . A number of bark beetle species
can cause economic damage by creating galleries in the timber3 .

Grey bark with long fissures showing pinkish-orange colours in the cracks.
(Copyright Stefano Zerauschek, www.flickr.com: AP)

References

Leaf gall caused by the wasp (Andricus quercuscalicis) on
pedunculate oak (Quercus robur): Turkey oak is the alternate
host completing the life cycle of this wasp.

Stalkless acorns with cup covered by bristles.
(Copyright Graziano Propetto, www.actaplantarum.org: AP)(Copyright Somepics, commons.wikimedia.org: CC0)

Observed presences in Europe

Annual average temperature (°C)

Autoecology diagrams based on harmonised
field observations from forest plots.

Sum of precipitation of the driest month (mm)Annual precipitation (mm)Average temperature of the coldest month (°C)

Field data in Europe (including absences)

Potential spring-summer solar irradiation (kWh m-2)

Seasonal variation of monthly precipitation (dimensionless)[1] P. S. Savill, The silviculture of trees used inBritish forestry (CABI, 2013).
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This is an extended summary of the chapter. The full version ofthis chapter (revised and peer-reviewed) will be published online athttps://w3id.org/mtv/FISE-Comm/v01/e01b479. The purpose of thissummary is to provide an accessible dissemination of the related
main topics.
This QR code points to the full online version, where the most
updated content may be freely accessed.
Please, cite as:de Rigo, D., Enescu, C. M., Houston Durrant, T., Caudullo, G., 2016.
Quercus cerris in Europe: distribution, habitat, usage andthreats. In: San-Miguel-Ayanz, J., de Rigo, D., Caudullo, G., Houston
Durrant, T., Mauri, A. (Eds.), European Atlas of Forest Tree Species.
Publ. Off. EU, Luxembourg, pp. e01b479+

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