Naslov
Pollen and charcoal as keys for understanding vegetation dynamics during the past - case study from Central Croatia

Autori
Hruševar, Dario ; Bakrač, Koraljka ; Miko, Slobodan ; Ilijanić, Nikolina ; Hasan, Ozren ; Mitić, Božena

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

Izvornik
Botanica Serbica Vol. 42, Suppl. 1. 7BBC Book of abstracts / Anačkov, Goran ; Zorić, Lana - Beograd : Institute of Botany and Botanical Garden, 2018, 83-83

Skup
7th Balkan Botanical Congress

Mjesto i datum
Novi Sad, Srbija, 10.09.2018. - 14.09.2018

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
anthropogenic indicators, Blatuša peatland, fire, Holocene, paleoenvironment, palynology

Sažetak
Sediment from the biggest Croatian mire (Blatuša) was taken in 2015. Physical and geochemical analysis of sediments, qualitative and quantitative analyses of pollen palynomorphs and charcoal particles were performed. The following local zones were identified: Pinus - Fagus - Ulmus (Zone 1, depth 210-175 cm), Fagus - Corylus (Zone 2a, 175- 150 cm), Fagus - Alnus (Zone 2b, 150-85 cm), NAP (non-arboreal pollen) - Fagus - Quercus (Zone 3a, 85-45 cm) and NAP - Carpinus - Quercus - Fagus (Zone 3b, 45-5 cm). Local palynological species form following subzones: Cyperaceae - Polypodiales (210-180 cm), Polypodiales - Sphagnum (180-90 cm), Sphagnum - Polypodiales (90-40 cm) and Cyperaceae (40-5 cm). Zone 1 is characterised by 41 pollen types, the share of arboreal pollen is ~ 85%, the broader area was covered by pine and plants typical for oak forests, and todays area of the mire was a mosaic of wetland vegetation and wet meadows, with partially developed peatland vegetation. Zone 2 is characterised by 45 pollen types, the share of arboreal pollen is ~ 96%, with a domination of beech forest, the high share of hazel (Zone 2a) and alder (Zone 2b), and a local domination of ferns. Zone 3 is characterised by 57 pollen types, the share of arboreal pollen is ~ 72%, with a relative domination of grasses. Beech is the most common tree in Zone 3a and hornbeam and oak in Zone 3b, which is also characterised by the highest palynological richness and numerous anthropogenic indicators (eg. Cerealia pollen). According to the results of 14C AMS dating, the deepest section of the core belongs to the Preboreal interval (Holocene). The shares of arboreal pollen, anthropogenic indicators, charcoal particles and palynological richness point to variable intensity of anthropogenic pressure, particularly expressed since the developed Middle Ages. Charcoal particles were the most numerous through the Zones 1 and 3, and are evidence of regional and local fires, essential succession factors. The results enable us to apply them for the same postglacial period for the surrounding biogeographical area in the border zone between Central and Southeast Europe.

Izvorni jezik
Engleski

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