Marisia - Maros Megyei Múzeum Évkönyve 35/2. (2015)

Botany

Considerations concerning threatened cormoflora from Grädistea Muncelului-Cioclovina Natural Park

V/R R V nt

Fig. 2: Distribution of sozological categories

Fig. 3: Bioforms spectrum of sozological categories

The most numerous group consists of rare species (77,35%), followed by vulnerable/rare (9,43%), not threatened (9,43%) and vulnerable species (1,88%) according to Red List of the superior plants of Romania (Oltean et al., 1994) [5] (fig. 2).

From the point of view of life forms, geophytes register the highest percentage (54,71%), while hemicryptophytes represent only 26,41%. The species that have the resting buds near the ground (chamaephytes) and those with buds on braches above the ground (phanerophytes) present a rate of 7,54%. The annual and perennial therophytes have a percentage of 3,76% from the all bioforms (fig. 3).

Fig. 4: Floristic spectrum of sozological categories

The basic fund of the geoelements includes European (22%), Eurasian-Mediterranean (12%) and Balkan-Carpathian (10%) species (fig. 4). There are also taxons with phytogeographical importance as Dacian-Endemic (Cephalaria radiata), Dacian-Balkan (Peucedanum rochelianum), Carpathian (Thymus comosus, Hepatica transsilvanica, Dianthus spiculifolius) and Endemic (Sorbus borbasii, S. dacica) elements. The mild climate in some areas from the park favored the development of the Mediterranean species as Orchis mascula ssp. signifera, Anthemis cretica, Piptatherum virescens.

Analyzing the ecological preferences of species for humidity, temperature and soil reaction we noticed the dominance of xeromesophilous (52%), micro-mesothermal (50%) and low acidneutrophilous (52%) species (fig. 5).

37

Bale

Euc-Balc

End

Euc(Med)

Euc(Mont)

Carp-Bale

Euc

Rant-Pan

Med

Bale-Carp

Eua

Circibor)

Carp

Circ

Eua(Cont)

Dac-Balc

Eua(Med)

Dac(End)

Eur

Carp-Balc-Anat