DIGITALNA ARHIVA ŠUMARSKOG LISTA
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| ŠUMARSKI LIST 3-4/2007 str. 33 <-- 33 --> PDF |
M. Idžojtić, M. Glavaš, M. Zebec, R. Pernar, J. Bećarević, K. Glova, S. Plantak: ŽUTA I BIJELA IMELA ... Šumarski list br. 3–4, CXXXI (2007), 125-135 Klepac, D. 1955: Utjecaj imele na prirast jelovih for Geospatial Information; Vol. XXXVI, part šuma. Šum. list 79: 231–243. I/W3, Hannover 17.-20. 05. 2005., Germany. P e rna r, R., M. B a j i ć , D. Vu l e t ić , M. I d žoj t i ć , Z e b e c , M., M. I d ž oj t i ć 2005: Hosts and distribu- M. Ančić & A. Seletković, 2005: Aerial tion of yellow mistletoe (Loranthus europaeus high resolution imaging of the mistletoe for the Jacq.) in Croatia. In: Abstract book of Sympoassesment of forest decline in fir stands. Interna- sium Flora and Vegetation of Slovenia and netional Society for Photogrammetry and Remote ighbouring countries 2005., Ljubljana, Septem- Sensing Symposium. In: Heipke C., K. Jacobsen ber 16-18, 2005. 37–38 pp. & M. Gerke (ed.): High resolution Earth Imaging SUMMARY: The research was carried out in the area managed by Hrvatske šume d.o.o. (Croatian Forests Ltd.), Zagreb, Forest Administration (FA) Našice (6 Forest Offices: Ćeralije, Donji Miholjac, Đurđenovac, Koška, Slatina and Voćin) and FA Osijek (5 Forest Offices: Batina, Darda, Đakovo, Levanjska Varoš and Tikveš), for two mistletoe species: yellow mistletoe (Loranthus europaeus Jacq.) and white-berried mistletoe (V. album L. ssp. album). The hosts on which these two species were investigated were: Quercus petraea (Matt.) Liebl., Q. robur L., Q. cerris L., Populus alba L., P. tremula L., P. nigra L., P. ×canadensis Moench, Salix alba L., Fagus sylvatica L., Carpinus betulus L., Prunus avium L., Fraxinus angustifolia Vahl, F. pennsylvanica Marshall, Juglans nigra L. and Robinia pseudoacacia L. In the selected sub- compartments older than 30 years, through a diagonal survey the number of infected and non-infected trees, as well as the number of mistletoe plants on infected trees was registered. The spatial distribution of the intensity of infection of the sessile and pedunculate oaks with yellow mistletoe in eight management units is shown. In the area of the FA Našice the contagion of the pedunculate oak with yellow mistletoe is considerably lower (1.7 % of 27,592 examined trees) than in the area of the FA Osijek (10.1 % of 6,164 examined trees). For the sessile oak the situation is opposite, i.e. in the area of the FA Osijek the contagion is considerably lower (7 % of 27,518 examined trees) than in the area of the FA Našice (17.8 % of 11.220 examined trees). On the contaminated sessile and pedunculate oak trees there were 2 mistletoe bushes on the average. Yellow mistletoe also occurs on the Turkey oak, and was observed on 3.7 % of 5.644 examined trees. On the common beech and European hornbeam mistletoe is present in the area of the FA Osijek, Forest Office Levanjska Varoš. In the investigated area white-berried mistletoe was not found on the narrow- leaved ash, but was present on 22.4 % of the examined green ash trees, which is an invasive species in natural narrow-leaved ash forests. White mistletoe is present on all autochthonous poplar tree species (white and European black poplar and European aspen), as well as on the Canadian poplar, and in the individual management units the contagion was varying (1.5–25 % of examined trees). In three management units, in which mistletoe was examined on the white willow, 2.5 to 17.3 % of examined trees was contaminated. In the area of the FA Levanjska Varoš mistletoe was found on the wild cherry. Of the foreign species there is considerable contagion of the black walnut trees with mistletoe (29 % of 361 examined trees), and it occurs on 12.6 % of 318 examined trees of the black locust. Key words: Loranthus europaeus Jacq., Viscum album L., mistletoe, infestation, Quercus L., Populus L., Salix L., Fagus L., Carpinus L., Prunus L., Fraxinus L., Juglans L., Robinia L., Croatian Forests Ltd. b, Našice, Osijek |