A5046231668- Geology and Paleoclimatology Research
- Tree-ring climate responses
- Plant Water Relations and Carbon Dynamics
- Archaeology and ancient environmental studies
- Climate change and permafrost
- Astro and Planetary Science
- Geological Studies and Exploration
- Forest ecology and management
- Geomagnetism and Paleomagnetism Studies
- Ancient and Medieval Archaeology Studies
- Ecology and Vegetation Dynamics Studies
- Lichen and fungal ecology
- Wood and Agarwood Research
- Aquatic and Environmental Studies
- Ecology and biodiversity studies
- Soil and Environmental Studies
- Solar and Space Plasma Dynamics
- Rangeland and Wildlife Management
- Climate variability and models
- Scientific Research and Philosophical Inquiry
- Landslides and related hazards
- Forest Ecology and Biodiversity Studies
- Botany and Plant Ecology Studies
Institute of Plant and Animal Ecology
2009-2025
Ural Federal University
2020-2025
Russian Academy of Sciences
2000-2008
Quantitative wood anatomy (QWA), which involves measuring cell anatomical characteristics commonly on dated tree rings, is becoming increasingly important within plant sciences and ecology. This approach particularly valuable for studies that require processing a large number of samples, such as those aimed at millennial-long climatic reconstructions. However, the field faces significant challenges, including absence publicly available comprehensive protocol efficiently uniformly producing...
Though tree-ring chronologies are annually resolved, their dating has never been independently validated at the global scale. Moreover, it is unknown if atmospheric radiocarbon enrichment events of cosmogenic origin leave spatiotemporally consistent fingerprints. Here we measure 14C content in 484 individual tree rings formed periods 770-780 and 990-1000 CE. Distinct excursions starting boreal summer 774 spring 993 ensure precise 44 records from five continents. We also identify a meridional...
New and well‐dated evidence of sulphate deposits in Greenland Antarctic ice cores indicate a substantial extensive atmospheric acidic dust veil at A.D. 533–534 ± 2 years. This was likely produced by large explosive, near equatorial volcanic eruption, causing widespread dimming contributing to the abrupt cooling across much Northern Hemisphere known from historical records tree‐ring data have occurred 536. Tree‐ring suggest that this most severe protracted short‐term cold episode last two...
This paper describes variability in trends of annual tree growth at several locations the high latitudes Eurasia, providing a wide regional comparison over 2000-year period. The study focuses on nature local and widespread tree-growth responses to recent warming seen instrumental observations, available northern regions for periods ranging from decades century. Instrumental temperature data demonstrate differences seasonal scale Eurasian complexity spatial diversity tree-growing-season...
Abstract The Arctic is warming faster than any other region on Earth. Putting this rapid into perspective challenging because instrumental records are often short or incomplete in polar regions and precisely-dated temperature proxies with high temporal resolution largely lacking. Here, we provide long-term by reconstructing past summer variability at Yamal Peninsula – a hotspot of recent over the 7638 years using annually resolved tree-ring records. We demonstrate that anthropogenic...
Abstract The Sun sporadically produces eruptive events leading to intense fluxes of solar energetic particles (SEPs) that dramatically disrupt the near-Earth radiation environment. Such have been directly studied for last decades but little is known about occurrence and magnitude rare, extreme SEP events. Presently, a few produced measurable signals in cosmogenic radionuclides such as 14 C, 10 Be 36 Cl found. Analyzing annual C concentrations tree-rings from Switzerland, Germany, Ireland,...
Nearly 280 radiocarbon-dated macrofossils from 115 sites in Russia are used to reconstruct the shift northern treeline during last 10,000 yr, which was primarily considered be climatically controlled. Picea obovata Ledeb. spread
Remains of subfossil Siberian larch trees in the Holocene deposits Yamal Peninsula (Western Siberia) have been collected order to develop a continuous, multimillennium tree-ring-width chronology. This work has produced calendar-age dated 4000-year (2000 bc ad 1996) series. From these data, summer-temperature variability this region estimated on annual multidecadal timescales. Radiocarbon dating selected older material shows that oldest wood is 9400 years old and dates sampled are generally...
Abstract Estimates of past climate and future forest biomass dynamics are constrained by uncertainties in the relationships between growth climatic variability instrumental data themselves. Of particular interest this regard is boreal‐forest zone, where radial has historically been closely connected with temperature variability, but various lines evidence have indicated a decoupling since about 1960s. We here address growth‐vs.‐temperature divergence analyzing tree‐ring width density from...
The development of research into the history tree growth and inferred summer temperature changes in Yamalia spanning last 2000 years is reviewed. One focus evolving production tree-ring width (TRW) maximum-latewood density (MXD) larch (Larix sibirica) chronologies, incorporating different applications Regional Curve Standardisation (RCS). Another comparison independent data representing past adjacent areas: Yamal Polar Urals, examination evidence for common behaviour at timescales. sample we...
Linked to major volcanic eruptions around 536 and 540 CE, the onset of Late Antique Little Ice Age has been described as coldest period past two millennia. The exact timing spatial extent this exceptional cold phase are, however, still under debate because limited resolution geographical distribution available proxy archives. Here, we use 106 wood anatomical thin sections from 23 forest sites 20 tree species in both hemispheres search for cell-level fingerprints ephemeral summer cooling...
Abstract Tree rings are crucial for reconstructing past climates, with maximum latewood density (MXD) as a key metric. However, wood integrity is critical accurate MXD‐based reconstructions, raising concerns when using potentially degraded relict wood. Quantitative anatomy (QWA) provides morphometric alternative. We compared X‐ray and QWA‐derived measurements from recent five‐millennia‐old Siberia's Yamal region. measured bulk holo‐cellulose‐to‐wood ratio employed spectroscopic analyses to...
The spatial and temporal dynamics of forest-tundra communities was studied on the Yamal Peninsula within northern treeline ecotone. paper presents results surveying 12 sample plots more than 1000 trees Siberian larch spruce. Based cross-dated tree-ring chronologies, age structure stands for last 150 years were obtained. Dynamic processes in ecotone are most pronounced sparse forests, where there has been a sharp increase stand density since middle 20th century. Correlation analysis tree...
Based on the analysis of frequency anomalous anatomical structures in wood Siberian larch and spruce (frost rings, light false as well missing narrow rings), we reconstructed a timeline climatic extremes (summer frosts, sharp multiday decreases air temperature during growing season, low average summer temperatures) Yamal (Western Siberia) over last 4500 years. In total, 229 years were determined to have experienced extreme events. The most significant recorded 2053, 1935, 1647, 1626, 1553,...
Abstract The Sun sporadically produces eruptive events leading to intense fluxes of solar energetic particles (SEPs) that dramatically disrupt the near-Earth radiation environment. Such are directly studied for last decades but little is known about occurrence and magnitude rare, extreme SEP events. Presently, a few produced measurable signals in cosmogenic radionuclides such as 14 C, 10 Be 36 Cl have been found. Analyzing annual C concentrations tree-rings from Switzerland, Germany,...