A5029306919- Climate change and permafrost
- Cryospheric studies and observations
- Atmospheric and Environmental Gas Dynamics
- Fire effects on ecosystems
- Tree-ring climate responses
- Geology and Paleoclimatology Research
- Peatlands and Wetlands Ecology
- Geological Studies and Exploration
- Methane Hydrates and Related Phenomena
- Plant Water Relations and Carbon Dynamics
- Forest ecology and management
- Lichen and fungal ecology
- Soil Carbon and Nitrogen Dynamics
- Arctic and Antarctic ice dynamics
- Groundwater and Isotope Geochemistry
- Botany and Plant Ecology Studies
- Hydrocarbon exploration and reservoir analysis
- Indigenous Studies and Ecology
- Soil and Environmental Studies
- Climate variability and models
- Marine and coastal ecosystems
- Atmospheric chemistry and aerosols
- Bryophyte Studies and Records
- Water Resources and Management
- Isotope Analysis in Ecology
Sukachev Institute of Forest
2015-2024
Krasnoyarsk Scientific Center
2022-2024
Siberian Federal University
2015-2024
Siberian Branch of the Russian Academy of Sciences
2011-2024
Institute of Geography
2024
National Research Tomsk State University
2022
Université Toulouse III - Paul Sabatier
2019
Institut de Recherche pour le Développement
2019
Géosciences Environnement Toulouse
2019
Russian Academy of Sciences
2008-2017
Abstract One of the most common descriptors relationship between root and shoot biomass is : ratio, which has become a core method for estimating from more easily measured biomass. Previous reviews have examined ratio data, but only considered particular vegetation types not always critically reviewed data used. Reliable ratios are needed wide range in order to improve accuracy estimates, including those required effects land management use change National Greenhouse Gas Inventories. This...
Abstract Tundra and boreal ecosystems encompass the northern circumpolar permafrost region are experiencing rapid environmental change with important implications for global carbon (C) budget. We analysed multi-decadal time series containing 302 annual estimates of dioxide (CO 2 ) flux across 70 non-permafrost ecosystems, 672 summer CO 181 ecosystems. find an increase in sink but not despite similar increases uptake. Thus, recent non-growing-season losses have substantially impacted balance...
Abstract Wildfires are an important factor in controlling forest ecosystem dynamics across the circumpolar boreal zone. An improved understanding of their direct and indirect, short- to long-term impacts on vegetation cover permafrost–vegetation coupling is particularly predict changes carbon, nutrient water cycles under projected climate warming. Here, we apply dendrochronological techniques a multi-parameter dataset reconstruct effect wildfires tree growth seasonal permafrost thaw depth...
Abstract. Past efforts to synthesize and quantify the magnitude change in carbon dioxide (CO2) fluxes terrestrial ecosystems across rapidly warming Arctic–boreal zone (ABZ) have provided valuable information but were limited their geographical temporal coverage. Furthermore, these been based on data aggregated over varying time periods, often with only minimal site ancillary data, thus limiting potential be used large-scale budget assessments. To bridge gaps, we developed a standardized...
Abstract. The eddy-covariance technique measures carbon, water, and energy fluxes between the land surface atmosphere at hundreds of sites globally. Collections standardised homogenised flux estimates such as LaThuile, Fluxnet2015, National Ecological Observatory Network (NEON), Integrated Carbon Observation System (ICOS), AsiaFlux, AmeriFlux, Terrestrial Ecosystem Research (TERN)/OzFlux data sets are invaluable to study processes vegetation functioning ecosystem scale. Space-borne...
Frequent measurements of dissolved organic (DOC) and inorganic (DIC) carbon concentrations in rivers during snowmelt, the entire ice-free season, winter were made five large watersheds (15 000–174 000 km2) Central Siberian Plateau (Yenisey River basin). These differ degree continuous permafrost coverage, mean annual air temperature, proportion tundra forest vegetation. With an DOC export from catchment areas 2.8–4.7 gC m − 2 as compared to DIC 1.0–2.8 2, was dominant component terrigenous C...
Abstract Biomass burning produces a spectrum of thermally altered materials that releases pyrogenic carbon (PyC) to terrestrial, atmospheric, and aquatic systems. Most studies focus on the refractory end PyC spectrum, derived from middle‐ high‐temperature combustion. Low‐temperature is produced during wildfires has been found be particularly labile water soluble. Here we find in each major Siberian watersheds, low‐temperature fire‐derived biomarkers are present detectable concentrations all...
Abstract The Central Siberian Plateau is undergoing rapid climate change that has resulted in increased frequency of forest fires and subsequent alteration watershed carbon nutrient dynamics. Across a chronosequence (3 to >100 years since wildfire) we quantified the effects fire on quantity composition dissolved organic matter (DOM), stream water concentrations, as well in-stream uptake. Wildfires concentrations nitrate for decade, while decreasing nitrogen (DOC DON) aliphatic DOM...
Aerosols produced by wildfires are a common phenomenon in boreal regions. For the Siberian taiga, it is still an open question if effects of aerosols on atmospheric conditions increase net CO2 uptake or photosynthesis. We investigated factors controlling forest ecosystem productivity (NEP) and explored how clouds smoke modulate radiation as major factor NEP during fire events years 2012 2013. To characterize underlying mechanisms response to environmental drivers, Artificial Neural Networks...
Peatlands and forests cover large areas of the boreal biome are critical for global climate regulation. They also regulate regional through heat water vapour exchange with atmosphere. Understanding how land-atmosphere interactions in peatlands differ from may therefore be crucial modelling system dynamics assessing benefits peatland conservation restoration. To assess biophysical impacts on peak growing season air temperature humidity, we analysed surface energy fluxes albedo 35 37 evergreen...
Abstract. The relative role of fire and climate in determining canopy species composition aboveground carbon stocks were investigated. Measurements made along a transect extending from the dark taiga zone central Siberia, where Picea Abies dominate canopy, into Larix eastern Siberia. We test hypotheses that change is based (1) on climate-driven performance only, (2) or (3) fire-performance interactions. show evergreen conifers obovata sibirica are natural late-successional both provided...
Stable oxygen isotope ratios (δ(18) O) in trees from high latitude ecosystems are valuable sources of information for recent and past environmental changes, but the interpretation is hampered by complex hydrology forests growing under permafrost conditions, where only a shallow layer soil thaws summer. We investigated larch (Larix gmelinii) at two sites with contrasting conditions Siberia determined δ(18) O water different depths, roots, twigs, needles as well soluble carbohydrates regularly...
Abstract To quantify the impact of evapotranspiration phenomena on active layer dynamics in a permafrost‐dominated forested watershed Central Siberia, we performed numerical cryohydrological study water and energy transfer using new open source cryohydrogeology simulator, with two innovative features: spatially distributed, mechanistic handling inclusion tool high‐ performance computing toolbox for simulation fluid dynamics, OpenFOAM. In this region, heterogeneity solar exposure leads to...