2021
Vegetation and climate changes during the Miocene climatic optimum and Miocene climatic transition in the northwestern part of Central Paratethys
DOLÁKOVÁ, Nela, Marianna KOVACOVA a Torsten UTESCHERZákladní údaje
Originální název
Vegetation and climate changes during the Miocene climatic optimum and Miocene climatic transition in the northwestern part of Central Paratethys
Autoři
DOLÁKOVÁ, Nela (203 Česká republika, garant, domácí), Marianna KOVACOVA a Torsten UTESCHER
Vydání
Geological Journal, Hoboken, Wiley, 2021, 0072-1050
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10505 Geology
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 2.128
Kód RIV
RIV/00216224:14310/21:00120973
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000598081200001
Klíčová slova anglicky
Central Paratethys; Miocene climatic optimum; transition; palaeoclimate; palaeovegetation; palynology
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 11. 2. 2021 15:58, Mgr. Marie Šípková, DiS.
Anotace
V originále
The study of pollen spectra mirrors the evolution of landscape and climatic changes in the northwestern part of Central Paratethys domain during the regional stages Karpatian-Badenian (Late Burdigalian-Langhian to Early Serravalian; NN4-NN6 biozone). This interval includes the Miocene climatic optimum (MCO) and the Miocene climatic transition (MCT) at 14.8-12.0 Ma. Here we study the pollen record from marine strata in eight wells and sections (Hevlin, Slup, Medlov, Ivan, Lomnice, Zidlochovice, Baden Soos, and Devinska Nova Ves) including a total of 92 samples. The standard pollen diagrams are simultaneously analysed using the Palaeotropical/Arctotertiary concept (P/A), synthesized diagrams, coexistence approach, and a technique allowing to reconstruct diversity of plant functional types in order to unravel climate changes and their impact on the biosphere. Warmest climate conditions supporting a diverse, thermophilous mixed mesophytic forest vegetation with a high proportion of broadleaved evergreen PFTs persisted in the neighbouring continental parts during the Karpatian to Early Badenian (NN4-NN5 biozone) representing the MCO. Evidence for the MTC and subsequent cooling (NN5 and NN6 at ca. 14 Ma) comes from lower percentages of thermophilous and evergreen elements and higher diversity of deciduous PFTs in the ecospectra (Devinska Nova Ves, NN6 biozone). Inferred annual precipitation rates above 800 mm and the almost continuous presence subtropical swamp tree pollen point to the persistence of overall humid climate conditions in the study area. Reconstructed precipitation data and the presence of drought-tolerant plant functional types (PFTs) point to a seasonal climate. The studied records partly show shorter term cyclic changes in climate and plant diversity related to glacial events in the Langhian. Using the proportion of broadleaved evergreen versus broadleaved deciduous tree diversity as indicator for temperature changes, several alternations of warmer and cooler phases are obvious from the record. Moreover, sedimentary facies plays an important role for quality and resolution of terrestrial signals in marine strata.