TY - JOUR

T1 - Local Environmental Conditions of Lake Balyktukel (Russian Altai) in the Holocene from Non-Pollen Palynomorphs

AU - Vnukovskaya, Yu D.

AU - Kuzmina, O. B.

AU - Rudaya, N. A.

N1 - This study was supported by the Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch, Russian Academy of Sciences (FWZZ-2022-0004), and Institute of Archeology and Ethnography, Siberian Branch, Russian Academy of Sciences (FWZG-2022-0010). No additional grants were received to conduct or direct this specific study.

PY - 2024

Y1 - 2024

N2 - The local environmental conditions of Lake Balyktukel, located on the Ulagan Plateau of the Russian Altai, over the last ~7 cal. ka, are studied. The taxonomic and quantitative composition and the pattern of distribution of non-pollen palynomorphs (algal cells, invertebrate remains, fungal spores, and conifer stomata) are studied in a column of mid-upper Holocene bottom sediments of the lake. From the beginning of the paleorecord to 6.5 cal. ka, the phytoplankton of the lake was dominated by cyanobionts, which indicates a bloom at that time. The proportion of green algae and dinophytes increases after 6.5 cal. ka, possibly due to increased influx of nutrients from the shore. After 4.3 cal. ka, the amount of green algae (Botryococcus) sharply decreases in the lake, due to climate cooling at this boundary. Also, the shores of the water body gradually became swampy after 4.3 cal. ka: the proportion of charophytes increased in the phytoplankton community. The amount of cyanobionts and green algae has sharply increased over the last 500 years, indicating blooming in the water body.

AB - The local environmental conditions of Lake Balyktukel, located on the Ulagan Plateau of the Russian Altai, over the last ~7 cal. ka, are studied. The taxonomic and quantitative composition and the pattern of distribution of non-pollen palynomorphs (algal cells, invertebrate remains, fungal spores, and conifer stomata) are studied in a column of mid-upper Holocene bottom sediments of the lake. From the beginning of the paleorecord to 6.5 cal. ka, the phytoplankton of the lake was dominated by cyanobionts, which indicates a bloom at that time. The proportion of green algae and dinophytes increases after 6.5 cal. ka, possibly due to increased influx of nutrients from the shore. After 4.3 cal. ka, the amount of green algae (Botryococcus) sharply decreases in the lake, due to climate cooling at this boundary. Also, the shores of the water body gradually became swampy after 4.3 cal. ka: the proportion of charophytes increased in the phytoplankton community. The amount of cyanobionts and green algae has sharply increased over the last 500 years, indicating blooming in the water body.

KW - Altai

KW - Middle–Late Holocene

KW - lake deposits

KW - non-pollen palynomorphs

KW - paleoecology

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85209762389&origin=inward&txGid=926fbafac410d2d31c97365069ab9302

UR - https://www.mendeley.com/catalogue/4a9a3c03-a09a-3c69-910d-45865ea18e9e/

U2 - 10.1134/S0031030124600501

DO - 10.1134/S0031030124600501

M3 - Article

VL - 58

SP - 841

EP - 850

JO - Paleontological Journal

JF - Paleontological Journal

SN - 0031-0301

IS - 7

ER -