Naslov
Natural regeneration of Holm oak (Quercus ilex L.) forests in Istria

Autori
Dubravac, Tomislav ; Dekanić, Stjepan

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
"Forestry Science Between Economy and Society Demands" / - Sarajevo, 2008, 9-9

Skup
"Forestry Science Between Economy and Society Demands"

Mjesto i datum
Sarajevo, Bosna i Hercegovina, 08.10.2008. - 10.10.2008

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Holm oak (Quercus ilex L.); natural regeneration; coppice forests; Istria

Sažetak
Holm oak (Quercus ilex L.) is the basic climatogenic tree species in the Croatian part of Mediterranean. Coppice forests of Holm oak comprise 98% (74 985 ha) of the total area of Holm oak forests in Croatia (76 146 ha). Most of them are in private ownership, and only 9 306 ha (12.4%) are state owned and managed by the state forestry company, "Hrvatske šume" d.o.o. Zagreb. Investigations were carried out in the Eu-Mediterranean vegetation zone of evergreen forests, in the area of Forest Offices of Pula, Poreč, Cres-Lošinj (7 experimental plots), and on the plot in the Brijuni National Park. The plots have all the characteristics of Holm oak and Flowering ash (Orno-Quercetum ilicis H-ić/1956/1958) stands. Basic stand structure elements, canopy cover and the occurrence and numbers of seedlings, were monitored. Results show that the numbers of Hom oak seedlings originating from seed, as the basic condition for development and existence of the stands, are exceptionally satisfactory on all plots except the plot in the Brijuni National Park. However, satisfactory natural regeneration is in question due to the excessive number of trees per ha, narrow crowns, excessive canopy cover of over 85%. During natural regeneration of these stands, certain problems become evident, of which according to their importance are the aggression of Holm oak and laurel seedlings sprouting from stumps, competition of shrubs, inadequate and untimely silvicultural interventions and excessive presence of game. Autochthonous stands of Holm oak are stable ecosystems, which resist negative biotic and abiotic factors relatively easily and which therefore deserve more intensive research.

Izvorni jezik
Engleski

Znanstvena područja
Šumarstvo, Biotehnologija

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