Refine
Has Fulltext
- no (35) (remove)
Year of publication
Document Type
- Article (35) (remove)
Language
- English (35)
Is part of the Bibliography
- yes (35)
Keywords
- Siberia (5)
- pollen (5)
- Diatoms (3)
- metabarcoding (3)
- sedimentary ancient DNA (3)
- treeline (3)
- Holocene (2)
- Larix (2)
- Mean July temperature (2)
- Temperature (2)
- climate change (2)
- diatoms (2)
- vegetation (2)
- Alas (1)
- Alkalinity (1)
- Aquatic and terrestrial ecosystems (1)
- Arctic (1)
- Arctic lake sediments (1)
- Arctic lakes (1)
- Arctic limnology (1)
- Autocorrelation (1)
- Boreal forests (1)
- Bryophytes (1)
- Central Yakutia (1)
- Cladocera (1)
- Ecosystem dynamics (1)
- Environmental DNA (1)
- Extended R-Value model (1)
- Fungus -plant covariation (1)
- Holocene Thermal Maximum (1)
- ITS marker (1)
- Indicator species (1)
- Intraspecific variation (1)
- Khatanga river (1)
- Lacustrine surface samples (1)
- Lake Bolshoe Toko (1)
- Lake-ice cover (1)
- Larch (1)
- Larix cajanderi (1)
- Larix gmelinii (1)
- Low-centred polygon (1)
- Metabarcoding (1)
- Moss samples (1)
- NMDS (1)
- Ordination (1)
- Palaeolimnology (1)
- Palynology (1)
- Pediastrum (1)
- Permafrost (1)
- Pollen (1)
- Pollen source area (1)
- Population genetics (1)
- Procrustes rotation (1)
- Range expansion (1)
- RbcL (1)
- Reconstruction (1)
- Russia (1)
- Russian Arctic (1)
- Sediment geochemistry (1)
- Sedimentary ancient DNA (1)
- Siberian arctic (1)
- Siberian tree line (1)
- Summer and winter temperature (1)
- Thaw lakes (1)
- Thermokarst (1)
- Tree line (1)
- Tundra (1)
- Tundra-taiga ecotone (1)
- Tundra-taiga transition (1)
- UAV (1)
- Vascular plants (1)
- WA-PLS (1)
- Water depth (1)
- Weighted-average partial least squares (1)
- Yakutia (1)
- adaptation (1)
- ancient sedimentary DNA (1)
- assembly rules (1)
- chloroplast genome (1)
- clonal growth (1)
- closed forest (1)
- cryolithology (1)
- dendroecology (1)
- diatom indicator species (1)
- dissolved silica concentration (1)
- diversity (1)
- ecological indication (1)
- environmental DNA (1)
- environmental filtering (1)
- fire (1)
- forest change (1)
- forest structure (1)
- freshwater ostracods (1)
- glacial lakes (1)
- growth rate (1)
- hybridization capture (1)
- last glacial (1)
- latitude (1)
- latitudinal gradient (1)
- leading edge (1)
- migration (1)
- morphotypes (1)
- pH (1)
- palaeovegetation (1)
- paleoecology (1)
- paleoenvironments (1)
- patterned ground (1)
- permafrost (1)
- photogrammetry (1)
- phylogenetic diversity (1)
- plant diversity (1)
- plant macro-fossils (1)
- point cloud (1)
- radiocarbon dating (1)
- recruitment (1)
- remote sensing (1)
- rhizopods (1)
- sediment core (1)
- sedimentary DNA (1)
- stand structure (1)
- structure from motion (1)
- target enrichment (1)
- thermokarst (1)
- trnL (1)
- trnL P6 loop (1)
- trnL marker (1)
- tundra (1)
- tundra-taiga ecotone (1)
- vegetation model (1)
Wildfires, as a key disturbance in forest ecosystems, are shaping the world's boreal landscapes. Changes in fire regimes are closely linked to a wide array of environmental factors, such as vegetation composition, climate change, and human activity. Arctic and boreal regions and, in particular, Siberian boreal forests are experiencing rising air and ground temperatures with the subsequent degradation of permafrost soils leading to shifts in tree cover and species composition. Compared to the boreal zones of North America or Europe, little is known about how such environmental changes might influence long-term fire regimes in Russia. The larch-dominated eastern Siberian deciduous boreal forests differ markedly from the composition of other boreal forests, yet data about past fire regimes remain sparse. Here, we present a high-resolution macroscopic charcoal record from lacustrine sediments of Lake Khamra (southwest Yakutia, Siberia) spanning the last ca. 2200 years, including information about charcoal particle sizes and morphotypes. Our results reveal a phase of increased charcoal accumulation between 600 and 900 CE, indicative of relatively high amounts of burnt biomass and high fire frequencies. This is followed by an almost 900-year-long period of low charcoal accumulation without significant peaks likely corresponding to cooler climate conditions. After 1750 CE fire frequencies and the relative amount of biomass burnt start to increase again, coinciding with a warming climate and increased anthropogenic land development after Russian colonization. In the 20th century, total charcoal accumulation decreases again to very low levels despite higher fire frequency, potentially reflecting a change in fire management strategies and/or a shift of the fire regime towards more frequent but smaller fires. A similar pattern for different charcoal morphotypes and comparison to a pollen and non-pollen palynomorph (NPP) record from the same sediment core indicate that broad-scale changes in vegetation composition were probably not a major driver of recorded fire regime changes. Instead, the fire regime of the last two millennia at Lake Khamra seems to be controlled mainly by a combination of short-term climate variability and anthropogenic fire ignition and suppression.