J 2015

Modelling the Last Glacial Maximum environments for a refugium of Pleistocene biota in the Russian Altai Mountains, SiberiaPalaeogeography, Palaeoclimatology, Palaeoecology

HAIS, Martin, Klára KOMPRDOVÁ, Nikolai ERMAKOV and Milan CHYTRÝ

Basic information

Original name

Modelling the Last Glacial Maximum environments for a refugium of Pleistocene biota in the Russian Altai Mountains, SiberiaPalaeogeography, Palaeoclimatology, Palaeoecology

Authors

HAIS, Martin (203 Czech Republic), Klára KOMPRDOVÁ (203 Czech Republic, belonging to the institution), Nikolai ERMAKOV (643 Russian Federation) and Milan CHYTRÝ (203 Czech Republic, guarantor, belonging to the institution)

Edition

Palaeogeography, Palaeoclimatology, Palaeoecology, AMSTERDAM (NETHERLANDS), Elsevier, 2015, 0031-0182

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10600 1.6 Biological sciences

Country of publisher

Netherlands

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 2.525

RIV identification code

RIV/00216224:14310/15:00081406

Organization unit

Faculty of Science

UT WoS

000362613300011

Keywords in English

Climate change; Habitat distribution models; Palaeoenvironments; Pleistocene; Random Forest; Vegetation-climate relationships

Tags

Tags

International impact, Reviewed
Změněno: 13/3/2018 10:35, Mgr. Lucie Jarošová, DiS.

Abstract

V originále

Recent botanical and zoological studies have suggested that the AltaiMountains in southern Siberia are an important refugiumof the last glacial biota that used to bewidespread across northern Eurasia before the Pleistocene– Holocene transition. To obtain insights into the history of this relict biota,we modelled the spatial distribution of habitats during the Last GlacialMaximum (LGM) in the Russian Altai. We prepared a map of the current vegetation of this area based on the ground-truthed remote sensing data, and modelled the distribution of the current vegetation types using the Random Forest technique with climatic predictors. The models were projected onto the CCSM3 model of the LGMclimate for the Russian Altai and interpreted for 72% of its area because the remaining part is supposed to have been glaciated during the LGM. The models projected LGMpredominance of desertsteppe acrossmost of the non-glaciated area of the Russian Altai, probably associatedwith areas of typical steppe, tundra grasslands and some other habitat types, including forest patches in streamvalleys. It is likely that during the LGM, these habitats supported the cold-adapted open-landscape biota. In the Holocene, most of the previous grassland area changed into forest or forest-steppe and the Pleistocene biota retreated, with the exception of the Chuya Basin and the Ukok Plateau in the southeast, where the habitat change was very small and desert-steppe and associated vegetation types remained preserved. This refugial area is currently rich in the relict Pleistocene species. A different history was suggested for the precipitation-rich area in the northernmost Altai (north of Lake Teletskoye), where the LGM models suggested occurrence of patches of open forest of Larix sibirica and Pinus sibirica in forest-tundra and forest-steppe landscapes. These forests may have provided the LGM refugium for the temperate forest species that currently occur in this precipitation-rich area.

Links

GAP504/11/0454, research and development project
Name: Změny biodiverzity na přechodu pleistocénu a holocénu: současné analogie v reliktních ekosystémech Sibiře
Investor: Czech Science Foundation
LM2011028, research and development project
Name: RECETOX ? Národní infrastruktura pro výzkum toxických látek v prostředí
Investor: Ministry of Education, Youth and Sports of the CR