| Autor: |
Maroš Wiezik, Jamrichová, Eva, Hájková, Petra, Hrivnák, Richard, Frantíšek Máliš, Petr, Libor, Jankovská, Vlasta, Čierniková, Malvína, Hájek, Michal |
| Rok vydání: |
2019 |
| DOI: |
10.6084/m9.figshare.10259426.v1 |
| Popis: |
The Western Carpathians have recently been examined by several palaeoecological studies. However, they are still a region that remains underexplored in terms of the Holocene history of mountain woodlands. We analysed an 8,000 years old peat sequence from the southern part of the Western Carpathians (the Bykovo site) for pollen, needles and stomata, and reviewed the data on the occurrence and spread of beech since the last Glacial times in order to put results from Bykovo into the context of the whole Western Carpathians. For the pre-industrial times, we reconstructed mixed beech-fir or beech-fir-spruce woodlands in zonal habitats, noble hardwood woodlands on screes, and spruce woodlands in peaty and wet habitats. A meta-analysis of available pollen data for beech revealed that a few sites in Pannonia and on the southern Carpathian fringes reached beech pollen abundances exceeding 0.5% already at the very beginning of the Holocene (12–10 cal BP). Moreover, the pattern of reaching greater pollen abundance limits showed a clear south-to-north gradient starting in the Pannonian lowland. Therefore, the direction of the spread of beech based on pollen abundances and the absence of beech macrofossil evidence during the Last Glacial Maximum do not support local glacial refugia of beech directly in the Western Carpathians. The timing of local beech occurrence (empirical pollen limit of 1.4–2%) and its expansion (rational pollen limit of up to 5 %) at the Bykovo site fits well this gradual spread of beech from the south. The first period of beech spreading in the Bykovo area around 6,250 cal BP coincides well with the period of increased precipitation between 6,100 and 6,800 cal BP, as reconstructed by different proxies (e.g. stable isotopes) for the Western Carpathians. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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