Holocene carbon dynamics at the forest-steppe ecotone of southern Siberia.

ABSTRACT: The forest-steppe ecotone in southern Siberia is highly sensitive to climate change; global warming is expected to push the ecotone northwards, at the same time resulting in degradation of the underlying permafrost. To gain a deeper understanding of long-term forest-steppe carbon dynamics, we use a highly resolved, multiproxy, palaeolimnological approach, based on sediment records from Lake Baikal. We reconstruct proxies that are relevant to understanding carbon dynamics including carbon mass accumulation rates (CMAR; g C m^-2  yr^-1 ) and isotope composition of organic matter (δ¹³ C_TOC ). Forest-steppe dynamics were reconstructed using pollen, and diatom records provided measures of primary production from near- and off-shore communities. We used

SUBMITTER: Mackay AW 

PROVIDER: S-EPMC6849524 | biostudies-literature | 2017 May

REPOSITORIES: biostudies-literature