Naslov
Ecological and floristic characteristics of Ledena jama pit on the Mountain Velebit (Croatia)

Autori
Vrbek, Mirjana ; Fiedler, Suzana

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

Izvornik
Abstracts of the XIII International Symposium of Biospeleology / - Marakeš, 1997, 88-88

Skup
XIII International Symposium of Biospeleology

Mjesto i datum
Marrakesh, Maroko, 20.04.1997. - 27.04.1997

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
speleobotany ; flora ; cave ; Ledena jama ; Velebit ; Croatia

Sažetak
Ledena jama pit is located on the north of mountain Velebit (Croatia) on the elevation of 1240 m, in the middle of meadow belonging to the association Festucetum pungentis Ht. 1930. This cave is a complicated speleological object 514 m deep, mostly filled with the snow and the ice. The specificity of Ledena jama is its entrance with dimensions of 74 m × 43 m, which gradually becomes narrower down to the depth of 40 m where is an ice stopper which separates it from the rest of the channel. During different seasons (spring, summer and autumn) of 1995 and 1996, the plants growing around the entrance and at various depths and different expositions inside the object were collected and listed. Momentary illumination was one of the ecological factors measured. Outside and inside the object at the lower boundary of plant growth, daily air temperature changes as well as relative air humidity were also observed. This research showed that, with regard to the plant species growing there, the entrance area of Ledena jama pit can be divided into three zones. The first zone (+6 m to -6 m) which due to a higher influence of external microclimatic conditions floristically is similar to the meadow on which Ledena jama pit is situated ; the second zone (-6 m to -23 m) which floristically differs considerably from the first zone due to a higher influence of internal microclimatic conditions, there occur a large number of ferns, mosses and algae ; the third zone (-23 m to -40 m) where mostly mosses and algae grow due to the highest influence of the internal microclimatic conditions.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA