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ŠUMARSKI LIST 1-2/2001 str. 28     <-- 28 -->        PDF


From all so far unpublished phytosociological works dealing with the
beech-fir forests of Croatia (Abieti-Fagetum s. L.), the numerical analysis of
phytosociological records has been made. A total of 216 records from 11 sources
has been analyzed (H or vat 1938; Bertović et al. 1966; Tr i n aj s t i ć
1970, 1972, 1995; Rauš 1984; Medvedović 1992; Vukelić 1985,1992;
Vuk el i ć & Sp a nj oil 992; Rauš et al. 1996), out of which 78 records from
the Dinaric region and 138 records from the Pannonian one (cf. Fig. 1). The
average number of species per record is 36 (in the Dinaric region 41 and in the
Pannonian one 34).

All phytosociological records have been made using the standard Braun-
Blanquet s method. In that, the combined abundance and coverage estimate
and the sociality estimate for each species are entered in the tables. The sociality
for individual species being more or less permanent, but also unsuitable
for the numerical analysis, the combined abundance and coverage estimate
only has been used. All data have been entered in one common table in the programme
package "TURBO (VEG)" (Hennekens 1996). In that, theBraun-
Blanquet s combined scale for abundace and coverage estimation has been
transformed into the vand der Maarel´s ordinal scale (van der M a are I
1979). To all said records, two numerical analysis methods have been applied

- the cluster analysis and the multidimensional scaling (cf. Fig. 2 and 3). The
numerical analysis has been applied by means of the programme package
SYN-TAX 5.02 which is used for multivariant analyses in taxonomy and sine-
col ogy.
The results of both these methods coincide, but for easier reference the results
of multidimensional scaling have bee chosen for interpretation purposes
(cf. Fig. 3). In this analysis, the records have been divided into four clearly distinctive
groups. The first group consists of the records from the Dinaric region,
which are rather homogenous, the second group comprises the records from
the Pannonian region, which are also clearly distinctive but less homogenous,
while the third and the fourth groups are represented by the records made on
the degradated habitats of Pannonian beech-fir forests. One of these two
groups comprises the records in which predominant species is the birch with a
small participation of the bbch and the fir (a lower succession level), while the
other group comprises the records where the beech and fir species are predominant
(a higer succession level). Both these groups are well discriminated
both between themselves and from the typical Pannonian and Dinaric beech-

fir forest. The results of the earlier researches coincide fully whit those ot he
phytosociological record numerical analysis, and the difference is in the pre

sentationand easie
of results with the numericalr for interpretation.
analysis being much more acceptable
words: Abieti-Fagetum, beech-fir forests, numerical analysis,

Šumarski listbr. 1 2. CXXV (2001). 19-26