sdu faculty of forestry journal special edition 2009 - Orman Fakültesi
sdu faculty of forestry journal special edition 2009 - Orman Fakültesi
sdu faculty of forestry journal special edition 2009 - Orman Fakültesi
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SDÜ ORMAN FAKÜLTESİ DERGİSİ<br />
4.4 Main problem in shrubs, vines and seasonal flowers is dead plants.<br />
The mayor problem is the high death rate. In shrubs, it is followed by aphids,<br />
powdery mildew and decaying plants.<br />
4.5 The most damaged tree species are Siberian elm, black locust, box elder<br />
and plane tree.<br />
Siberian elm (Ulmus pumila), black locust (Robinia pseudoacacia), box elder<br />
(Acer negundo) and plane tree (Platanus x hispanica) are the species which reach<br />
the greatest proportions <strong>of</strong> observed disturbances (Table 5). In fact, only the<br />
problems <strong>of</strong> 16 species accounted for 70% <strong>of</strong> the total. That would imply that some<br />
species are far more prone to problems; they would be the “key plants” (Raupp et<br />
al, 1985). Hence, these species require the biggest efforts in maintenance and<br />
conservation.<br />
Table 5. Disturbances for the 20 most affected tree and shrub species. Relative abundance,<br />
percentage <strong>of</strong> total disturbances and frequency <strong>of</strong> SYGs with disturbances in each species, for all the<br />
years and for all the inventoried green spaces. (*) accumulated percentage until that species.<br />
Tree species<br />
% <strong>of</strong><br />
total<br />
SYGs<br />
% <strong>of</strong> total<br />
disturbances<br />
% <strong>of</strong> SYGs<br />
with<br />
disturbances<br />
Ulmus pumila 6.3 11.0 83.6<br />
Robinia<br />
pseudoacacia<br />
6 8.9 85.9<br />
Acer negundo 4.7 8.2 88.0<br />
Platanus x<br />
hispanica<br />
Prunus<br />
cerasifera var.<br />
atropurpurea<br />
Populus alba<br />
var. fastigiata<br />
Tilia<br />
platyphillos<br />
4.5 6.8 85.4<br />
225<br />
Shrub species<br />
Nerium<br />
oleander<br />
Cotoneaster<br />
sp.<br />
Pittosporum<br />
tobira<br />
Eonymus<br />
europaeus<br />
% <strong>of</strong><br />
total<br />
SYGs<br />
% <strong>of</strong> total<br />
disturbances<br />
% <strong>of</strong> SYGs<br />
with<br />
disturbances<br />
5.3 10.5 73.1<br />
6 7.5 60.0<br />
4.8 6.6 55.0<br />
3 6.2 84.2<br />
6.5 5.3 71.0 Rosa sp. 4.8 5.7 60.7<br />
2.2 4.8 95.7<br />
Viburnum<br />
tinus<br />
5.5 5.2 42.0<br />
2.1 3.8 81.8 Pyracantha sp. 3.8 4.8 58.3<br />
Cedrus sp. 4.7 3.6 66.0 Berberis sp. 2.1 4.1 70.4<br />
Populus nigra 2.1 3.6 100.0<br />
Morus alba 2.8 3.4 73.3<br />
Sophora<br />
japonica<br />
Rosmarinus<br />
<strong>of</strong>ficinalis<br />
Mahonia<br />
aquifolia<br />
4.4 3.7 49.1<br />
2.2 3.0 50.0<br />
2.5 3.1 77.8 Laurus nobilis 1.3 2.9 70.6<br />
Acer sp. 2 3.0 85.7 Juniperus sp. 4.5 2.7 36.8<br />
Cupressus sp. 6.4 2.7 38.2<br />
Olea europaea 1.9 2.6 70.0<br />
Gleditsia<br />
triacanthos<br />
1.8 2.4 84.2<br />
Photinia<br />
serrulata<br />
Lavandula<br />
latifolia<br />
Cotoneaster<br />
horizontalis<br />
2.3 2.4 44.8<br />
3.3 2.3 41.5<br />
2.5 2.0 35.5<br />
Pinus pinea 4.7 2.2 (75.5% * ) 46.0 Arbutus unedo 1.6 1.9 (71.7% * ) 35.0<br />
Eleagnus<br />
angustifolia<br />
0.9 2.2 100.0<br />
Populus alba 1.5 2.0 75.0<br />
Cercis<br />
siliquastrum<br />
1.2 1.9 92.3<br />
Salix sp. 1.4 1.7 93.3<br />
Spirea<br />
hypericifolia<br />
Hibiscus<br />
syriacus<br />
Prunus<br />
laurocerasus<br />
Escallonia<br />
rubra<br />
1.3 1.8 52.9<br />
1.5 1.8 52.6<br />
2.5 1.8 34.4<br />
2.3 1.7 41.4
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