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Published in DiRROS: 06.04.2020; Views: 2068; Downloads: 560
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Abstract: A phytosociological analysis of 46 relevés of mesophilous colline and submontane Fagus sylvatica as well as (or) Carpinus betulus forests was conducted in Slovenian Istria. It was established that they are frequently syndynamically interrelated: in places, common hornbeam stands are merely a degradation stage on beech sites, and can be classified into the subassociation Ornithogalo pyrenaici-Fagetum fraxinetosum orni (its locus classicus is in the Goriška Brda Hills) and into the new subassociation Ornithogalo pyrenaici-Carpinetum betuli seslerietosum autumnalis. Compared with similar submontane stands from other parts of the western and southwestern Slovenia they are slightly poorer in species, with fewer diagnostic species of alliances Erythronio-Carpinion, Aremonio-Fagion and Tilio-Acerion, order Fagetalia sylvaticae and class Vaccinio-Piceetea, and with more diagnostic species of the order Quercetalia pubescenti-petraeae. Geographically, they are characterised by the taxon Helleborus odorus subsp. istriacus. Although they cover small areas these forests generate high yields and are therefore important both economically and as biotopes of protected species.
Keywords: phytosociology, synsystematics, beech sites, Ornithogalo-Carpinetum, Ornithogalo-Fagetum, Istria, Slovenia
Published in DiRROS: 15.06.2018; Views: 4882; Downloads: 3320
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Abstract: The eastern distribution limit of Spiraea decumbens s. str. is in Breginjski Kot (northwestern Slovenia), where we recorded 49 localities of this eastern-Alpine endemic plant species. We determined two new localities in a new quadrant (9746/4) on riparian rocks of the Nadiža River under Mt. Mija at Kozja Peč, which is currently the southeasternmost point of its entire distribution area. We conducted a phytosociological survey of 26 localities. This endemic occurs in dolomite rock crevices in stands classified within the association Spiraeo-Potentilletum caulescentis. On dolomite screes and torrential fens it is found to dominate on small areas in the successional stages, classified into the provisional association Aquilegio einseleanea-Spiraeetum decumbentis (alliance Petasition paradoxi) and into the new association Spiraeo decumbentis-Seslerietum calcariae (alliance Caricion austroalpinae). These stages are gradually becoming overgrown with thermophilous deciduous trees, and in one of the relevés we found the studied species in an open hop hornbeam stand classified into the association Fraxino orni-Ostryetum. Its populations are vital and unthreatened, except in the two new localities under Mt. Mija, which call for special protection due to their small size and a possibility of being backfilled with gravel.
Published in DiRROS: 12.07.2017; Views: 4325; Downloads: 2327
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Keywords: listnati gozdovi, sintaksonomija, fitogeografija, gozdna rastišča, gozdne združbe, gospodarjenje z gozdovi, varstvo narave, albumi
Published in DiRROS: 12.07.2017; Views: 4272; Downloads: 923
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Abstract: Gozdovi plemenitih listavcev so bili v Sloveniji na podlagi povsem novih znanstvenih izhodišč sistemsko opredeljeni v pregledni Tipologiji gozdnih rastišč (2012). V okviru tega so bili na podlagi ekologije in višinske razprostranjenosti opisani naslednji rastiščni tipi: podgorsko-gorsko lipovje na karbonatnih in mešanih kamninah, podgorsko pobočno velikojesenovje na karbonatnih in mešanih kamninah, gorsko-zgornjegorsko javorovje z brestom na karbonatnih in mešanih kamninah in podgorsko-gorsko javorovje s praprotmi na silikatnih kamninah. V tej publikaciji so na osnovi dosedanjega znanja in dostopnih virov v skladu z znanstvenimi fitocenološkimi principi utemeljili omenjene štiri rastiščne tipe s pripadajočimi asociacijami/združbami. Opisali so ključne značilnosti tipov gozdov plemenitih listavcev, kot so razširjenost,geološke, pedološke, reliefne in podnebne značilnosti, rastlinskevrste, gozdnogospodarski in gozdnogojitveni vidiki, naravovarstveni pomen in ogroženost. Vsakega od štirih rastiščnih tipov smo ilustrirali s slikami značilnih rastiščnih in sestojnih razmer ter diagnostičnih vrst.
Keywords: gorski javor, ostrolistni javor, gorski brest, veliki jesen, lipa, lipovec, gozdni sestoji, gozdna rastišča, fitogeografija, pedologija, albumi
Published in DiRROS: 12.07.2017; Views: 3270; Downloads: 1001
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