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ŠUMARSKI LIST 9-10/2002 str. 33 <-- 33 --> PDF |
A. Čami, J. Franjić & Ž. Skvorc: VEGETACIJA GRMAST1H ŠUMSKIH RUBOVA U SLAVONIJI ... Šumarski list br. 9-10, CXXVI (2002), 3-6 Gudar y Jabalambre. Anal. Inst. Bot. Cavanilles and systematics. User´s manual. J. Podani, Bu19: 3-550. dapest, 53 p. Scholz, H., Scholz, I., 1995: Prunoidae. In H. Van der Maarel, E., 1979: Transformation of Scholz (ed.): Spermatophyta: Angiospermae: cover-abundance values in phytosociology and Dicotyledones. Band IV. Teil 2B, 2(3): 446-510. its effect on communty similarity. Vegetatio 39: Gustav Hegi Illustrite Flora von Mitteleuropa. 97-114. Blackwell Wissenschafts-Verlag, Oxford. Weber , H. E., 1998: Outline of the vegetation of Trinajstić, I., Pavletić, Zi., 1991: Vegetacija scrubs and hedges in the temperate and boreal specialnog ornitološkog rezervata Krapje dol u zone of Europe. Itinera Geobotanica 11: 85-120 Hrvatskoj. AcataBot. Croat. 50:41-54. Westhoff, V, van der Maarel, E., 1973: The Tuxen , R., 1952: HeckenundGebiische. Mitt. Geogr. Braun-Blanquet approach. In R. H. Wittaker Gesel. Hamburg 10: 85-117. (ed.): Ordination and classification ofcommuni- Tiixen, R., 1962: Pflanzensoziologisch-systematis- ties. Dr. W. Junk, The Hangue, 617-726. che Uberlegung zu Jakucs, P.: Die phytosoziolo- Wirth , J. M., 1993: Rhamno-Prunetea. In L. Mucigi- schen Verhaltnisse der Flaumeichen-Busch- na, G. Grabherr , S. Wallnofer : Die Pflanwalder Siidostmitteleuropas. Mitt. Flor.-Soz. Ar- zengesellschaften Osterreichs. Teil III Walder beitgem. 9: 296-300. und Gebiische. Gustav Fischer Verlag, 60-84. Podani, J., 2001: SYN-TAX 2000. Computer pro- Jena, grams for multivariate data analysis in ecology SUMMARY: Forest edges present a special form of vegetation growing between forest areas and non-forest, anthropogenetically influenced areas (cultural landscape). The phytosociological analysis of forest edges started relatively late, and, therefore, the first works dealing with this subject-matter began to appear in the middle of the 20th century (cf Tuxen 1952; Miiller 1962). The interest for this type of research developed parallelly with the awareness of biodiversity, i.e. of the wide variety and biological particularity of boundary forest areas where the associations very rich in species can be found. Although the forest edges are a relatively narrow zone between forest and non-forest areas, the environmental factors for the forest edge are stable and present a permanent stage. In most cases such transitions on the forest edges can be understood as a continuity and discontinuity stage (cf. Dierschke 1974). In the research of forest edge associations very often a methodological problem is encountered. One of the main principles of the Central European method are homogeneous areas and specific combination repeatability. The forest edge areas are often very narrow and markedly long. In such a long and narrow area very often several different combinations of species occur giving such area a mosaic-like appearance. In making vegetational relives of forest edges special attention has to be paid to the boundaries between associations because it might happen that by negligence some species from the other associations appear in a releve, that would cause an analysis and interpretation problem. Each forest edge builds a special phenomenon in the environment presenting a very important element in it. Forest and non-forest areas do not differ physiognomically only, they are ecologically different systems, too. In a narrow forest edge zone dividing two such areas ecological conditions change rapidly and species growing there must be very adaptable because they are a barrier between two different microclimatic areas. Usually, the forest is protected against the influences from the non-forest areas by a zone of densely branched shrubs of various dimensions. This protective zone is built by heliophilous forest species which have their ecological |