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  • The palaeoclimate evidence in peat profiles: stable isotope study (Slovenia)
    Pezdič, Jože ; Faganeli, Jadran ; Pirc, Simon
    A 1.5 meters thick profile of peat on Bevški mah (Slovenia, 300 m a.s.l.), $^14C$ dating from 8,500 to 2,500 years B.P. was explored as a paleoclimate record. The [delta] $^13C$ values in fine ... detritus (mainly Sphagnum) ranges from [minus] 28.45 permil at depth of 130 cm to [minus] 24.51 permil at depth of 10 cm. The residues of higer plants have mean [delta] $^13C$ value of [minus] 26.5 [plus minus] 0.5 permil. In addition, Sphagnum at two recent growing peatlands at the altitude of 300 m and at 1,200 m a.s.l., show [delta] $^13C$ = [minus] 28.0 [plus minus] 0.3 permil and [minus] 24.51 [plus minus] 0.6 permil respectively. The organic carbon isotope data of fine detritus in profile show continuous change of [delta] $13^C$ from the oldest-deepest (8,500 years B.P., [minus] 130 cm) to the youngest-upper (2,500 years B.P. [minus] 10 cm) layer. Comparison with [delta] $13^C$ in the recent peat locations leads to conclusion that conditions 8,500 years ago were similar to those currently present at the altitude of 300 m, while 2,500 years ago temperatures were probably even lower than what is found presently at 1,200 m a.s.l., where mean yearly temperature is about 4°C. Carbon isotope composition of Sphagnum relicts seems to be a useful Holocene paleo-climatic indicator in this area.
    Type of material - conference contribution ; adult, serious
    Publish date - 2000
    Language - english
    COBISS.SI-ID - 223326