J 2020

Habitats of Pleistocene megaherbivores reconstructed from the frozen fauna remains

AXMANOVÁ, Irena, Jan ROBOVSKY, Lubomír TICHÝ, Jiří DANIHELKA, Elena TROEVA et. al.

Základní údaje

Originální název

Habitats of Pleistocene megaherbivores reconstructed from the frozen fauna remains

Autoři

AXMANOVÁ, Irena (203 Česká republika, garant, domácí), Jan ROBOVSKY (203 Česká republika), Lubomír TICHÝ (203 Česká republika, domácí), Jiří DANIHELKA (203 Česká republika, domácí), Elena TROEVA (643 Rusko), Albert PROTOPOPOV (643 Rusko) a Milan CHYTRÝ (203 Česká republika, domácí)

Vydání

Ecography, Hoboken, Wiley, 2020, 0906-7590

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10619 Biodiversity conservation

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 5.992

Kód RIV

RIV/00216224:14310/20:00114204

Organizační jednotka

Přírodovědecká fakulta

UT WoS

000507386800001

Klíčová slova anglicky

mammoth steppe; megafauna habitats; northern Siberia and Beringia; palaeobotany; Pleistocene vegetation; vegetation reconstructions

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 23. 11. 2020 16:24, Mgr. Marie Šípková, DiS.

Anotace

V originále

The Late Pleistocene landscape in northern Eurasia and North America was inhabited by a specific megafaunal complex, which largely disappeared during the Pleistocene/Holocene transition. Vegetation changes are considered as one of the factors responsible for these extinctions, but the structure and composition of the Pleistocene vegetation are still poorly known. Here we complement previous studies by comparing the taxonomic composition of the plant remains found in the gastrointestinal tracts of the frozen carcasses of Pleistocene megaherbivores with the species composition of the current Siberian vegetation. We compiled a dataset of palaeobotanical records from frozen individuals of Pleistocene megaherbivores found in northern Siberia and Beringia and dated to the period from more than 50 kyr BP to 9 kyr BP. We also compiled a dataset of vegetation plots from several regions in Siberia. We analysed the similarity in taxonomic composition of plants between these two datasets using a novel method that accounts for variable taxonomic resolution in palaeobotanical data. For most megaherbivore individuals, plant remains in their gastrointestinal tracts corresponded to tundra, forest and mire vegetation, while they showed low similarity to steppe. This pattern was relatively constant over time, showing no remarkable differences between the Last Glacial Maximum and the periods before and afterwards. This suggests that during the Upper Pleistocene, a mosaic of mesic and wet vegetation types such as tundra with patches of forests and mires was common in northern Siberia and Beringia. In contrast, the steppe was rare to absent in the landscape or underused by the megaherbivores as a pasture since they found enough food in the widespread mesic and wet habitats with more productive vegetation.

Návaznosti

GAP504/11/0454, projekt VaV
Název: Změny biodiverzity na přechodu pleistocénu a holocénu: současné analogie v reliktních ekosystémech Sibiře
Investor: Grantová agentura ČR, Změny biodiverzity na přechodu pleistocénu a holocénu: současné analogie v reliktních ekosystémech Sibiře
GA17-15168S, projekt VaV
Název: Expertní systémy nové generace pro klasifikaci vegetace v kontinentálním měřítku
Investor: Grantová agentura ČR, Next generation expert systems for vegetation classification on a continental scale