Publications
Morphometric analysis of cirques in central Siberia's western Putorana Plateau: a proxy for palaeoclimate
A detailed morphometric analysis of 200 cirques on the western Putorana Plateau, central Siberia, reveals that the region experienced mountain glaciation during cold stages of the Late Pleistocene. The study found that these cirques, with mean dimensions of 936 m in length and 1000 m in width, exhibit near-circularity and a wider-than-deep form, indicating significant headwall erosion and a mature glacial landscape shaped by prolonged erosion. Reconstructed glaciers suggest a total ice volume of 10.6 km³, with equilibrium-line altitudes ranging from 593 to 1372 m above sea level (a.s.l.), median values of 818–826 m a.s.l., and summer temperatures of 0.3 to −0.4 °C. The research also estimated palaeoprecipitation values of 875–1036 mm per year, indicating sufficient moisture for cirque-style glaciation. These findings provide the first quantitative reconstruction of cirque glaciers in this region, offering new constraints on former glacier extent and palaeoclimatic conditions.
Autumn migration of passerine (Passeriformes) on the putorana plateau
Autumn migration of passerine birds on the Putorana Plateau follows a distinct pattern characterized by four well-defined waves, with peak activity coinciding with temperature drops. The study, conducted across eight survey points, revealed that these birds migrate along narrow strips near large rivers or lakes, primarily in southern, southwestern, and western directions. Population density varies significantly, peaking at 608 individuals per km² during the most intense migration periods, with the highest densities observed in the south of the plateau. The Arctic Warbler, Common Redpoll, and Little Bunting dominate numerically, while species within the same genus or family typically migrate on different days. This research sheds light on the eco-geographical dynamics of passerine migration, highlighting the impact of environmental factors such as temperature on migration patterns.
Ecological and Geographical Structure and Dynamics of Spring Migration of Passeriform Birds on the Putorana Plateau
Spring migration of passeriform birds on the Putorana Plateau follows distinct ecological and geographical patterns, characterized by asynchronous migratory waves with one dominant peak. Research spanning 1988–2007 identified 58 species migrating along river or lake shorelines, with population densities averaging 231 individuals/km². Migration timing varies significantly, from early arrivals like the horned lark (May 25–June 4) to late migrants such as the sand martin (June 7–16), with most species showing an 8-day interval between first appearances. The study highlights that migratory outbreaks coincide with low temperatures and precipitation, while closely related species exhibit varying synchronization in their migration peaks. This long-term analysis provides critical insights into the dynamics of avian spring migration in this UNESCO-listed region.
Ecological and Geographical Structure and Dynamics of the Autumn Migration of Passerine Birds on the Putorana Plateau
Autumn migration of passerine birds on the Putorana Plateau follows distinct ecological and geographical patterns, with population density peaking during periods of cooler temperatures and no precipitation. The study, conducted over 16 years across eight sites covering 150,000 km², identified 42 species migrating along narrow forest-edge strips, primarily in southern or southwestern directions. Population densities ranged from 239 to 643 individuals/km², with the highest concentrations observed in the south of the plateau. Migration occurs in four well-defined waves, often synchronized by environmental conditions rather than species relationships. The majority of birds form monospecific or polyspecific flocks, with most species completing their migration in 20–26 days. Key species include the Arctic warbler, common redpoll, and little bunting, which dominate numerically.
Labronema przhiboroi sp. nov. (Nematoda: Dorylaimida) from the Putorana Plateau (Eastern Siberia, Russia)
A new nematode species, Labronema przhiboroi sp. nov., has been discovered in the freshwater Lake Duluk on the Putorana Plateau in Eastern Siberia. This species belongs to the family Dorylaimidae and is distinguished from its closest relative, L. macrosoma, by its smaller body size, shorter spicules, and more pronounced cuticular ridges. The discovery contributes to the understanding of nematode biodiversity in this remote region. The research involved morphological analysis to differentiate the new species based on key anatomical features.
Landforms Recognized at the World Natural Heritage Sites (Siberia and the Russian Far East)
A comprehensive analysis of landforms within Russia's UNESCO World Heritage Sites reveals their exceptional geological, geomorphological, and aesthetic significance. The study highlights the unique features of the Volcanoes of Kamchatka, Lake Baikal, Putorana Plateau, and Lena Pillars National Park, including the Kluchevskoy Volcano, Uzon Volcano Caldera, Ayan fiords lake, and Russia's largest waterfalls. These sites are recognized for their outstanding natural values, contributing to global heritage conservation efforts. The research employs a detailed examination of these landforms, emphasizing their scientific and cultural importance.
Migrations of Passeriformes on the Putorana Plateau
The Putorana Plateau serves as a critical junction for passerine bird migrations, with distinct seasonal patterns and varying intensities. Spring migration occurs from late May to mid-June, lasting 8–17 days, while autumn migration spans late July to late August, lasting up to 31 days. Bird population density peaks in the south of the plateau (440 individuals/km²) and is lowest in the north (231 individuals/km²). Migration dynamics are wave-like, with bursts of activity influenced by temperature, showing higher intensity on colder days. Asynchronous migration patterns are observed among species and even within the same species, with spring migration synchronization varying annually from complete alignment to no overlap. The study employed route census methods on transects to analyze these migratory behaviors, revealing complex, temperature-dependent migration strategies.
Radial Growth of Dahurian Larch at the Upper Altitude Limit in the Western Part of the Putorana Plateau
Research on the Putorana Plateau reveals that while climatic conditions have improved, adult Dahurian larch trees at higher altitudes show no increase in radial growth over recent decades. The study found that older trees exhibit greater sensitivity to climate factors, whereas young trees experience more significant intraspecific competition than climatic influence. Young trees at higher elevations and on eastern-facing slopes display larger morphometric characteristics and ring widths compared to those in denser, lower-slope stands. This suggests that competition dynamics play a crucial role in tree growth at the upper altitude limit of this Subarctic region.
Spatial Structure and Dynamics of the Seasonal Migration of Passerines (Passeriformes, Aves) on the Putorana Plateau, Siberia
Seasonal migration of passerine birds on the Putorana Plateau, Siberia, follows distinct spatial and temporal patterns. Birds migrate along river or lake edges, with spring migration occurring from late May to mid-June (8–17 days) and autumn migration spanning late July to late August (14–31 days). The study reveals that 70–80% of individuals pass through within a shorter interval, with population density peaking in the south. Migration intensity is higher on colder days and follows a wave-like pattern, with 1–4 waves per season. Spring migration dynamics vary annually among related species, while autumn migration shows no synchronization. The research used route-counting methods on transects to analyze these patterns.
The Putorana Plateau: Tectonics, Morphotectonics, and Exodynamics
The Putorana Plateau, a vast and elevated region in northern Siberia, exhibits a unique geological structure shaped by tectonic inversion and prolonged denudation. Its surface, covered by extensive basalt lava flows from the Permian and Triassic periods, forms a 'layer cake' of volcanogenic layers with varying resistance to erosion. Tectonic uplift driven by mantle plume activity in the late Mesozoic era created deep canyons and steep slopes, while Pleistocene glaciation further sculpted its topography. The study reveals that the plateau's relief inversion and radial valley pattern are a result of inherited tectonic fractures and selective river erosion, with modern geomorphological processes varying significantly across different elevations. Cryogenic processes and relict glaciers add to the plateau's complex landscape.
Actual Conditions of the Arctic Small Glaciers (on the Example of the Putorana Plateau)
Arctic small glaciers, covering tens of thousands of square kilometers, are primarily influenced by oroclimatic factors and exist below the climatic snow line. A study on the Putorana Plateau, conducted between 2002 and 2019, provides detailed glaciological characterization of these glaciers, building upon earlier catalogs that relied mainly on aerial photographs with limited ground studies. The research involved field expeditions by a team from Moscow State University's Faculty of Geography, offering a more comprehensive understanding of the region's glacial features.
Ecological and Geographical Structure and Dynamics of Spring Migration of Water and Semiaquatic Birds on the Putorana Plateau
Spring migration of water and semiaquatic birds on the Putorana Plateau, spanning 1988–2007, reveals a dynamic ecological pattern dominated by tundra species (53% of Anseriformes and Charadriiformes) that migrate northward, eastward, and westward. Key stopover sites, particularly river deltas freed from snow early, support dense populations (15–227 ind./km), with the western plateau experiencing the highest migration intensity (20,000–30,000 individuals). The study identifies 68 species, distinguishing their distribution as universal (38%), local (22%), or point-specific (40%). Monospecific flocks dominate, and migration peaks from May 25 to June 17. Dominant species include common teal, Eurasian wigeon, northern pintail, grey-tailed tattler, and little stint.
Morphological features of round whitefish Prosopium cylindraceum lake Lama (Putorana Plateau)
Round whitefish (Prosopium cylindraceum) in Lake Lama, part of the Norilo-Pyasinsky water ecosystem on the Putorana Plateau, exhibit a relatively homogeneous population with consistent meristic and plastic characteristics. This finding suggests stability in key traits such as lateral line count and gill raker number across the Pyasina River basin and neighboring lakes, including Lake Sobachye. The study also reveals that while this species is abundant in the Pyasina basin—particularly in upper water bodies—it faces significant threats from non-commercial fishing, leading to local extirpation or drastic population declines. Additionally, the round whitefish's habitat extends into rocky, fast-flowing tributaries like Dudypta and Samoyedskaya, where it is less impacted by human activity. The research combines meristic analysis with ecological observations to assess population structure and vulnerability in this UNESCO-relevant region.
New findings of vascular plants on the Putorana Plateau
A recent survey of the Putorana Plateau, conducted between 2021 and 2022, uncovered 9 vascular plant species previously unknown to the Taimyrsky Municipal District (TMR) of Krasnoyarsk Territory and 7 new to the plateau itself. These discoveries include Carex vesicaria, Chamaerhodos grandiflora, Dactylorhiza fuchsii, among others, with some species like Botrychium multifidum and Oxytropis tichomirovii listed in the Krasnoyarsk Territory Red Data Book. The research also documented new locations for 28 rare taxa, contributing significantly to the understanding of the plateau's biodiversity. The study was part of a broader flora inventory program in the Putorana Nature Reserve, focusing on areas near Lake Nakomyaken and Lake Duluk.
Recognizing palsa and high-centered polygonal peatlands based on the carbon-to-nitrogen ratio
Research identifies carbon-to-nitrogen (C/N) ratios as a critical tool for distinguishing between palsa and high-centered polygonal peatlands, two distinct permafrost landforms with significant differences in structure and response to human impact. Palsa peatlands exhibit higher C/N values (30-36, occasionally up to 240), while high-centered polygonal peatlands typically range below 25-27 (often 10-20). This distinction arises from their differing genesis: palsa mounds form actively in sporadic or discontinuous permafrost zones, whereas polygonal peat blocks develop passively through thermokarst processes. The study highlights the importance of early identification methods for engineering and environmental surveys, as these landforms vary in height (1-9 meters), shape, and ice content, necessitating tailored safeguards to mitigate human impact.
Small Glaciers of the Putorana Plateau under Climate Change
Small glaciers on the Putorana Plateau exhibit greater stability compared to larger glaciers and small glaciation forms in warmer zones, despite adverse climatic conditions. This resilience was observed through expeditionary studies conducted between 2002–2004 and 2019, which provided new insights into the regime and evolution of these glacial features against recent climatic trends. The research highlights the contrasting responses of small glaciers to climate change, offering valuable data for assessing their current state and future trajectory.
Stonefly fauna (Insecta, Plecoptera) of the Putorana Plateau, Russia
A pioneering study reveals that the stonefly fauna of the Putorana Plateau, a UNESCO World Heritage Site in northern East Siberia, is notably impoverished, comprising only 12 species from 9 genera and 5 families. This marks the first comprehensive investigation of stoneflies (Insecta, Plecoptera) in this region. The research, conducted across nine areas using 12 sampling techniques between 2019 and 2024, identified five Capniidae, three Chloroperlidae, two Nemouridae, one Leuctridae, and one Perlodidae species. Seven of these species are newly recorded for the north of Eastern Siberia. Stoneflies were found inhabiting all types of running and standing waters across all altitudinal zones, from boreal forests to mountain deserts. Chorological analysis indicated a predominance of East Palaearctic distribution among the species.
Umbilicaria aprina and U. rhizinata (Umbilicariaceae, lichenized Ascomycota) in Russia
A comprehensive revision of the distribution of two lichen species, Umbilicaria aprina and U. rhizinata, in Russia reveals significant new findings. U. aprina is reported for the first time from Alexandra Land Island (Franz Josef Land Archipelago), Sverdrup Island (Taimyr Dolgano-Nenets District), and three republics: Altai, North Ossetia-Alania, and Sakha-Yakutia. Meanwhile, U. rhizinata extends its known range to Tyva, Buryatia, the Putorana Plateau, Kamchatka Peninsula, and the Magadan Region, marking its first record in the Asian Subarctic. The study combines morphological and molecular-phylogenetic data, supported by an ITS/5.8S phylogenetic tree, confirming the distinctness of these species. Distribution patterns indicate that U. aprina thrives in high Arctic regions (74°N–81°N) at higher elevations compared to U. rhizinata, whose northernmost record is near Norilsk on the Putorana Plateau (~70°N). This research enriches our understanding of lichen biodiversity and distribution dynamics across Russia.
Clay mineral and Nd, Pb, and Sr isotope provenance of a MIS 4-3 sediment record from the Lomonosov Ridge, central Arctic Ocean
A distinct sediment layer from the Lomonosov Ridge in the central Arctic Ocean, dating to the Marine Isotope Stage (MIS) 4-3 transition, marks a significant deglaciation event during the Middle Weichselian period. This 48 cm thick, dark grey silty clay layer contains elevated concentrations of ice-rafted debris (IRD), indicating a shift in sedimentation patterns likely linked to meltwater release from a large ice-dammed lake in northern Siberia. The study employed quantitative clay mineralogy analysis combined with Nd, Pb, and Sr isotope measurements to trace the provenance of sediments, revealing isotopic signatures consistent with Siberian basaltic rocks, such as those found on the Putorana Plateau. These findings suggest that weathering products from these rocks contributed to the sediment layer, providing new insights into Arctic deglaciation dynamics and paleoclimate interactions.
Contribution to butterfly fauna (Lepidoptera, Papilionoidea) of Putorana plateau in the eastern part of Lama Lake in Krasnoyarskii Krai of Russia
Research on the butterfly fauna of the Putorana Plateau, specifically in the eastern part of Lama Lake in Krasnoyarskii Krai, Russia, has identified 41 species from six families. Notably, seven of these species are considered rare or have restricted distributions, highlighting the ecological significance of this region. The study employed field surveys to document butterfly diversity and population dynamics, contributing valuable data to our understanding of Lepidoptera biodiversity in one of Russia's most remote and ecologically unique areas.
Does Schistidium marginale occur in Asian Russia?
Research on the Putorana Plateau reveals that plants previously identified as Schistidium marginale in Asian Russia are actually a new species, S. transbaicalense. This discovery was made through a combined molecular phylogenetic and morphological analysis, which showed that while S. transbaicalense shares some superficial similarities with S. marginale, it differs significantly in hair-point structure and costa transverse section. Molecular analysis placed S. transbaicalense in a distinct basal grade of the phylogenetic tree, separate from the Confertum-clade where S. marginale is found. The new species has been documented in southern Siberia and on the Putorana Plateau, with detailed descriptions, illustrations, distribution, ecology, and distinctions from similar species provided.
Features of the formation of a database of glaciers of the Putorana Plateau and the Munku-Sardyk Ridge
A comprehensive database of glaciers on the Putorana Plateau and Munku-Sardyk Ridge reveals unique glaciation dynamics distinct from global trends. Unlike other regions, these areas exhibit complex nival-glacial formations shaped by distinctive relief features, such as trapway structures and abundant rivers/lakes, complicating traditional glacial classification. The database, developed at the Institute of Geography of the Russian Academy of Sciences, tracks glacier states from 1960, 1979, and 1987, highlighting fragmentation patterns under climate warming—unlike typical glacial retreat. Comparisons with international databases like GLIMS and RGI underscore regional peculiarities, emphasizing the need for specialized classification frameworks to capture the full spectrum of these formations.
Identification of Attheyella nordenskioldii (Copepoda: Harpacticoida) in Lake Baikal using molecular genetic methods
A groundbreaking molecular genetic analysis reveals that the harpacticoid copepod species Attheyella nordenskioldii, previously misidentified as its junior synonym Canthocamptus gibba, is widespread across Lake Baikal and other Siberian and European regions. Contrary to earlier beliefs, C. gibba was not endemic to Baikal; instead, specimens from Baikal and surrounding areas belong to A. nordenskioldii, with genetic distances between populations ranging from 0.0016 to 0.065. The study, based on COI nucleotide sequences from meiobenthos samples across diverse regions, also highlights variability in the copulatory duct length and other morphological traits of the fifth leg of female specimens, challenging previous taxonomic distinctions.
Spring Migration of Water Birds on the Putorana Plateau
Spring migration of water and semiaquatic birds on the Putorana Plateau occurs from May 19 to June 27, with peak activity between May 25 and June 17. This period sees up to 68 species, including dominant ones like Eurasian Wigeon, Common Teal, and Northern Pintail, migrating north, east, or west, often stopping at early-thawing river deltas. Population densities range from 15 to 227 individuals per kilometer of coastline, with higher concentrations in western regions where up to 30,000 birds may pass through surveyed points. The study analyzed eight survey sites across 250,000 km² using route censuses, revealing that lake populations are consistently smaller than those on adjacent river sections.
A 1300-year multi-proxy palaeoecological record from the northwest Putorana Plateau (Russian Subarctic): environmental changes, vegetation dynamics and fire history
A recent increase in fire frequency on the northwest Putorana Plateau, a remote and human-untouched region of subarctic Siberia, has been linked to climate-driven environmental changes. The study, spanning 1300 years, revealed that dry conditions during the Medieval Climate Anomaly (680–1200 C.E.) led to high fire activity and spruce expansion beyond its current range, while the Little Ice Age (1200–1850 C.E.) brought cooling, moistening, tundra expansion, and a sharp decline in fires. Post-1990, peat accumulation and water table rise coincide with a surge in charcoal deposition, indicating heightened fire activity. Multi-proxy analysis—including pollen, macrofossils, testate amoebae, and charcoal—provided these insights, offering a rare glimpse into natural climate-vegetation-fire dynamics in this pristine subarctic landscape.
Assemblages of Meiobenthic and Planktonic Microcrustaceans (Cladocera and Copepoda) from Small Water Bodies of Mountain Subarctic (Putorana Plateau, Middle Siberia)
A comprehensive study of microcrustaceans (Cladocera and Copepoda) on the Putorana Plateau, a remote subarctic region, reveals a high species richness with significant biogeographical distinctions from other Arctic regions. The research identified 36 Cladocera and 24 Copepoda species, including four newly discovered taxa, highlighting the plateau's unique faunal composition influenced by Pleistocene glacial refugia and Middle Siberia's climatic features. Environmental factors such as water body size, type of water supply, and macrophyte composition were found to significantly regulate assemblage structures, with planktonic crustaceans more affected by these variables than meiobenthic ones. This study underscores the importance of the Putorana Plateau as a glacial relict hotspot and provides critical data for monitoring anthropogenic impacts and climate change in subarctic ecosystems.
Breeding Biology of the Eurasian Dotterel (Eudromias morinellus) on the Putorana Plateau, Central Siberia
A comprehensive study on the Eurasian dotterel (Eudromias morinellus) reveals that 70% of its population is concentrated in the central alpine belt of the Putorana Plateau, covering 42% of its vertical living space during the breeding season. The research, spanning 30 years (1988–2018), identifies optimal habitats as dry stony areas with sparse vegetation and a hummocky microrelief in the alpine belt. Nesting occurs at altitudes of 850–1036 meters, with egg-laying beginning as early as June 7 under often complete snow cover. Chicks typically emerge between July 3 and 18, with hatching synchronized within a single day for broods. The study also documents the species' three-dimensional range and its preference for specific microhabitats, providing critical insights into its breeding biology in one of Russia's largest Arctic mountain ranges.
Changes of Soil Properties along the Altitudinal Gradients in Subarctic Mountain Landscapes of Putorana Plateau, Central Siberia
A study on the Putorana Plateau, a remote and less-explored subarctic region of Central Siberia, reveals that slope angle significantly influences soil properties along elevational gradients. Researchers found that soils on gentle slopes exhibit thicker surface organic layers (SOL), higher pH, and greater Na+ content, alongside lower concentrations of carbon (C), nitrogen (N), aluminum (Ald), and iron (Fed). This suggests slower pedogenic processes in such environments. Conversely, steeper slopes show better differentiation of soil properties along the elevational gradient, particularly at deeper layers (0.1–0.3 m). While some characteristics, like SOL, C, N, or Ald concentrations, display clear trends with altitude—particularly on the Lama location—others do not follow a consistent pattern. The study collected data from three horizontal transects spanning elevations of 100–420 meters above sea level (a.s.l.), comparing two localities with differing slope angles through soil pits excavated to depths of 0.3–0.4 m.
Cryogenic Soils on the Trappean Rocks of Central Siberia
Research on the Putorana Plateau reveals distinct cryogenic soil types formed from trappean rocks, with their distribution shaped by climate continentality and humidity. Four soil types—gleyic peat cryozems, raw-humus cryozems, gray-humus cryozems, and sorbed-humus cryozems—were identified based on diagnostic horizons like CRg, AO, AY, and CRhs. These soils vary significantly across three climatic sectors: moderately continental humid (dominated by gleyic peat cryozems), continental slightly humid–semihumid (raw-humus cryozems), and sharply continental (gray-humus and sorbed-humus cryozems). The study highlights how lithogeomorphic and geocryological conditions further influence intra-sector soil distribution, while also addressing nomenclature and classification challenges. Conducted in remote areas of Central Siberia, this work provides critical insights into the morphogenetic features and spatial patterns of these poorly studied cryogenic soils.
Cryptic taxonomic diversity and high-latitude melanism in the glossiphoniid leech assemblage from the Eurasian Arctic
A comprehensive study of the Eurasian Arctic reveals that the glossiphoniid leech assemblage harbors significant cryptic taxonomic diversity, with 14 species identified, including five new to science. The Taymyr Peninsula and nearby Putorana Plateau emerge as biodiversity hotspots, hosting nine species, while other Arctic regions exhibit depleted faunas. The research leverages extensive occurrence and DNA sequence datasets, uncovering broad climatic range distributions for most species, with potential high-latitude endemism in two new taxa. Additionally, high-latitude melanism is identified as a common phenomenon among these leeches, challenging traditional biogeographical paradigms.
Dryagin’s Char Salvelinus drjagini Logaschev Sobachie Lake (Putorana Plateau)
Dryagin’s char (Salvelinus drjagini) from Lake Sobachye on the Putorana Plateau exhibits distinct morphological and demographic traits compared to Boganid char, making it a promising candidate for aquaculture. This subspecies is characterized by a wider body, with mature fish reaching up to 27.9% of their body length in height. It also features 112–133 perforated scales along the lateral line and 21–29 gill rakers on the first gill arch. Analysis revealed that Dryagin’s char reaches sexual maturity at 6 years, with a prolonged maturation period extending to 8–9 years. The study found that its fecundity ranges from 3,833 to 18,270 eggs, strongly correlated with fish mass (r = 0.83) and size (r = 0.77). Despite similar maturation times, Dryagin’s char’s larger size makes it more advantageous for native species introduction in aquaculture, particularly in the Krasnoyarsk Territory.
Geochemistry of Early Diagenesis in Sediments of Russian Arctic Glacial Lakes (Norilo–Pyasinskaya Water System)
A study on the Putorana Plateau reveals that early diagenesis in Arctic glacial lakes leads to significant geochemical changes, including the reduction of iron and manganese oxides and their migration into pore water. The research analyzed sediment cores from Lakes Pyasino and Melkoye, showing a shift from oxidized to reduced conditions at ~10 cm depth, driven by organic matter degradation and bacterial sulfate reduction. These processes release mobile elements like nitrate, phosphate, and dissolved organic carbon (DOC), while authigenic iron sulfides and manganese carbonates form. The findings provide insights into diagenetic processes across the Eurasian continent.
Interrelationships among mountain relief, surface organic layer, soil organic carbon, and its mineral association under subarctic forest tundra
A study on the Putorana Plateau reveals that clay content and surface organic layer thickness account for 68% of soil organic carbon (SOC) variability, providing a critical link between terrain characteristics and SOC stocks in subarctic forest-tundra ecosystems. The research addresses a significant data gap by analyzing SOC concentrations across two rugged catchments using multiple linear regression, identifying strong associations between slope angle, surface organic layer thickness, and SOC. These findings could enhance large-scale mapping efforts for SOC estimation in remote Siberian landscapes, offering valuable insights for climate change impact assessments.
Late-Holocene vegetation and fire history in Western Putorana Plateau (subarctic Siberia, Russia)
A reconstruction of late-Holocene vegetation and fire history on the western Putorana Plateau, a remote UNESCO World Heritage Site in subarctic Siberia, reveals no major vegetation shifts over the last 3.9 thousand years but identifies subtle yet significant changes. Around 3.1 ka BP, forest coverage expanded, followed by gradual degradation around 2.7–2.5 ka BP, with shrubs and tundra becoming dominant. Fire activity surged between 3.0 and 2.0 ka BP, with the most recent sediments showing a sharp increase in macroscopic charcoal accumulation—indicating a rise in fire frequency since the late 19th century that has no precedent in the Late-Holocene record. The study combines pollen and charcoal analysis from three lakes along an altitudinal transect to provide insights into climate-environmental dynamics in this poorly studied region.
Limonia interjecta (Diptera: Limoniidae), a new species for Russia and the East Palaearctic
A new record of the fly species Limonia interjecta (Diptera: Limoniidae) extends its known range to Russia and the East Palaearctic, marking its first documentation outside Europe. While rare in its European habitats, L. interjecta is notably common on the Putorana Plateau in northern Eastern Siberia, thriving across boreal forest and tundra zones at altitudes ranging from 71 to 723 meters. The study provides an illustrated redescription of both male and female specimens, offering critical taxonomic details, and discusses its distribution patterns within the Palaearctic region alongside habitat observations specific to the Putorana region.
Salvelinus boganidae lake Sobachie (Putorana plateau): age, growth, demographic parameters
A study of the Boganid char (Salvelinus boganidae) in Lake Sobatchie, Putorana Plateau, reveals significant variability in growth and demographic parameters. Fish aged 2 to 13 years were observed, with females (7-10 years) outnumbering males (8-11 years). Length ranged from 157 to 620 mm, and weight from 40 to 4000 g, showing substantial variability even among same-aged individuals. Sexual maturity occurs at age 5, with females reaching 307 mm and 348 g, while males reach 286 mm and 275 g. Puberty extends up to 7 years, and individual fecundity varies from 540 to 8207 eggs, depending on age and size. The study concludes that the Boganid char population is limited by the spawning ground capacity of the river Horonen. Research methods included modern ichthyological techniques applied over a six-year period (2013-2018).
Stand Biomass at Treeline Ecotone in Russian Subarctic Mountains Is Primarily Related to Species Composition but Its Dynamics Driven by Improvement of Climatic Conditions
Recent climate improvements have significantly boosted tree growth and establishment at the forest-tundra transition on Russia's Putorana Plateau, leading to a substantial accumulation of aboveground biomass. Over the 20th century, stand biomass increased exponentially, with 621–748 tons per km of treeline length added due to warmer early summers and increased winter precipitation. While regional biomass patterns are primarily shaped by species composition—dictated by macroclimatic factors like continentality and snowpack depth—the study reveals that recent biomass dynamics are driven by climatic improvements, highlighting the complex interplay between species adaptation and environmental change in subarctic ecosystems.
To the knowledge of the butterfly fauna (Lepidoptera: Papilionoidea) of the subarctic Putorana Plateau: Kharaelakh Ridge (Russia)
A study on the butterfly fauna of the subarctic Putorana Plateau, specifically focusing on the Kharaelakh Ridge in Russia, reveals 27 species of butterflies (Lepidoptera: Papilionoidea), including one new to science. This research significantly expands the known diversity of this region's butterfly fauna, with observations made during two expeditions in 2019 and 2020. The study employed traditional entomological methods, such as field sampling and morphological analysis, to document species richness and distribution patterns. Notably, the findings highlight the ecological importance of the Putorana Plateau as a biodiversity hotspot within the subarctic zone, contributing valuable data for conservation efforts in this unique UNESCO World Heritage Site.
Upward Treeline Shifts in Two Regions of Subarctic Russia Are Governed by Summer Thermal and Winter Snow Conditions
Upward shifts in treelines on the subarctic Putorana Plateau and Khibiny Massif, driven by warmer summers and increased winter snowfall, have accelerated since the early 20th century. This study reveals that while both regions experienced treeline encroachment into tundra, the timing and intensity varied—peaking in the 1930s for the Khibiny (oceanic influence) and the 1950s for the Putorana Plateau (continental influence). Slope exposure further influenced these shifts, with southern slopes showing greater upward movement. Analyzing tree rings from ~7,000 individuals across four species, researchers found that early-winter precipitation positively correlated with sapling abundance, suggesting continued treeline advance in response to climate change.
Analysis of the Avifauna Structure in the Alpine Belt of the Northwestern Putorana Plateau, Central Siberia
A study of the Putorana Plateau's alpine belt revealed a unique avifauna with 33 breeding bird species, including two first-time recordings: the red-necked stint and long-tailed skua, extending their known distribution ranges by 600 and 200 km. The research used route counts along transects to assess spatial differentiation, applying Sørensen's faunal coefficient for similarity analysis and population similarity coefficients. Passeriformes and Charadriiformes dominated (80–88%), with Arctic faunal complex species comprising 52–62% of diversity. Notably, bird abundance and density were higher than in other alpine regions, decreasing with altitude. The study highlights the plateau's ecological significance, showing how its avifauna is shaped by zonal-landscape and altitudinal patterns.
Floristic findings on the Putorana Plateau
A recent survey of the Putorana Plateau, conducted between 2018 and 2020, uncovered 61 new plant species for the region. Among these, eight were previously unknown to the entire Taimyr Municipal District of Krasnoyarsk Territory (TSR), including species like Poa vivipara and Carex buxbaumii. The study also documented 29 species new to the Putorana Plateau itself, with several listed in the Red Data Book of the Krasnoyarsk Territory due to their rarity or endangered status. Additionally, 24 previously rare or localized species were recorded at new sites, contributing valuable data for conservation efforts. The findings expand the known flora of this UNESCO World Heritage Site and highlight its ecological significance.
Hawksweeds of the Putorana Plateau
A comprehensive survey of hawkweeds (Hieracium L.) on the Putorana Plateau identifies three new species: Hieracium czamyjashense, H. pseudarctophilum, and H. pseudofariniramum. The study also documents new localities for two endemic or rare species, including H. putoranicum and H. subfariniramum. Fieldwork conducted between 2018 and 2020 across the western, southwestern, and central parts of the plateau—including regions near Lake Sobachye, Talnakh Town, and the Putoransky Nature Reserve—revealed diverse habitats and ecological associations for these species. Additionally, a previously unpublished herbarium specimen of H. umbellatum from Snezhnogorsk was included in the study. This research contributes to the floristic knowledge of the Putorana Plateau, highlighting its biodiversity and the need for conservation efforts.
Modelling Impact of Site and Terrain Morphological Characteristics on Biomass of Tree Species in Putorana Region
Tree biomass in the Putorana Plateau, a remote and understudied boreal region of Central Siberia, varies significantly with elevation and micro-terrain morphology. The study found that total tree biomass ranges from 6.47 to 149 tons per hectare, while deadwood biomass fluctuates between 0.06 and 21.45 tons per hectare. At Lama Lake, biomass production decreases with elevation, whereas at Keta Lake, the relationship follows a U-shaped pattern. The research derived significant height-diameter and crown radius-height models for six tree species, revealing that micro-site environmental conditions, including soil nutrient content, substantially influence tree biomass. These findings highlight the complex interplay between terrain morphology and biomass distribution in boreal forests.
New Data about the Distribution of Three Phylogenetic Lineages of Arctic Charr Salvelinus alpinus (Salmonidae) in their Contact Zones in the North of East Siberia
New genetic data reveal the distribution and contact zones of three distinct phylogenetic lineages of Arctic charr (Salvelinus alpinus) in the north of East Siberia, including the Putorana Plateau. The study identified haplotypes belonging to the Atlantic and Siberian subgroups of the Eurasian group on the Putorana Plateau, while the Khatanga River basin exhibited Atlantic subgroup haplotypes exclusively. In contrast, the Lena River delta showed both Siberian subgroup and Bering group haplotypes. These findings refine the known ranges of these lineages and highlight their sympatry in Taimyr water bodies, supporting the close relationship between Siberian subgroup charr across their distribution. The research analyzed mitochondrial DNA (mtDNA) control region sequences from 10 Arctic populations spanning from the Yenisei to the Lena rivers, providing critical insights into the genetic structure and evolutionary dynamics of this species in East Siberia.
Some repeated inventory results of the Putorana plateau vascular flora
A comprehensive inventory of the Putorana Plateau's vascular flora, encompassing 736 native species, reveals its hypoarctic classification with distinct regional variations. Cluster analysis identifies three floral clusters: eastern (moderately hypoarctic), central, and southwestern (hypoarcto-boreal). The study traces the plateau's floral history, highlighting glacial impacts and biogeographical influences from Arctic, Eurasian, and Asian sources. This research synthesizes herbarium data, literature reviews, and field observations to elucidate the complex formation and ecological structure of this unique highland ecosystem.
Spatial-Temporal Characteristics of Arctic Summer Climate Comfort Level in the Context of Regional Tourism Resources from 1979 to 2019
Global warming is significantly expanding Arctic summer climate comfort zones, creating favorable conditions for tourism development. From 1979 to 2019, the Universal Thermal Climate Index (UTCI) rose at a rate of 0.457 °C per decade, with an abrupt shift in 2001 from 'colder' to 'cool' conditions that have persisted since. Comfortable areas increased by 6.353 × 10^5 km² over the past decade, expanding into high-latitude and high-altitude regions such as the Putorana Plateau, Kola Peninsula, Verkhoyansk Mountains in Russia, and Alaska's Brooks Range. The study used ERA5-HEAT dataset data and statistical methods like climatic tendency rate and RAPS to analyze these trends, revealing that Arctic tourism could benefit from rising temperatures.
Specific Features of the Macrozoobenthic Communities of Small Arctic Lakes in Eurasia
Research reveals a distinct pattern in the biomass of macrozoobenthic communities across small Arctic and Subarctic lakes, showing a decrease in subarctic taiga regions, an increase in hypoarctic tundra, and another decline in the High Arctic. This study analyzed data from three northern Palearctic regions—Putorana Plateau, Kolguev Island, and Western Svalbard—to compare taxonomic structure, species richness, and abundance of benthic and littoral macroinvertebrates. By integrating original findings with extensive literature review, the research highlights regional variations in lake communities, providing insights into the ecological dynamics of these fragile ecosystems under varying climatic conditions.
Biogeographic patterns of planktonic and meiobenthic fauna diversity in inland waters of the Russian Arctic
A comprehensive analysis of planktonic and meiobenthic fauna diversity in the Russian Arctic reveals distinct longitudinal trends, with species richness increasing from Europe to eastern Siberia. The study, spanning 1960–2017, identified 175 species across seven regions, highlighting 19 ubiquitous taxa and a higher prevalence of rare species in the Bolshezemelskaya tundra and Putorana Plateau. Copepods showed positive associations with waterbody area, elevation, and precipitation, while cladocerans were linked to temperature, reflecting their thermophilic traits. Rotifers exhibited negative associations with these factors. The research also found that lake zooplankton communities are more diverse than those in ponds or pools, with the highest β-diversity observed in regions like the Bolshezemelskaya tundra and Putorana Plateau, characterized by heterogeneous environmental conditions. Climate warming appears to have caused a northward range extension for some cladoceran species, though the overall fauna composition remains temporally conservative.
Mountain Glaciers of the Russian North: Changes over the Past Decades under Climate Variations
A comprehensive review reveals that mountain glaciers in the Russian North, including those on the Putorana Plateau, have significantly retreated over recent decades due to climate change. The study, spanning from 1966 to 2019, found a clear trend of increasing temperatures and decreasing precipitation from south to north, leading to a reduction in both the area and mass of glaciers across the region. This pattern is particularly pronounced in small glacial systems, which exhibit varied responses based on size, morphology, and bedding despite similar climate conditions. The research utilized satellite imagery (Landsat, ASTER, Sentinel-2) and expeditionary data to compare historical records with contemporary observations, highlighting the dominant role of temperature as a key factor in glacier dynamics under prolonged warming trends.
Structure and Composition of the Nadayansky Lava Flow: an Example of the Homogeneity of Lava Flows of the Siberian Trap Province
Researchers have demonstrated the remarkable homogeneity of the Nadayansky Lava Flow, a key marker in the Siberian Trap Province, covering approximately 48,000 km² with an average thickness of 30 to 50 meters. This study reveals that both major and trace elements in the flow exhibit minimal variation, with concentrations such as SiO₂ (48.31%), TiO₂ (1.26%), and others remaining consistent within analytical uncertainties across hundreds of kilometers. The Nadayansky Flow's distinct glomerophyric texture further aids its identification from underlying and overlying formations. By comparing it to adjacent geological units like the Morongovsky and Mokulaevsky formations, the study highlights subtle but significant differences in TiO₂ concentrations (1.19% to 1.3%), crucial for stratigraphic correlation. These findings underscore the compositional uniformity of erupted magmas in continental flood basalt provinces, offering a geochemical framework for correlating distant volcanic sequences.
The list of rotifer and micro-crustacean taxa identified in the inland waters of the regions of Russian Arctic
A comprehensive inventory of rotifer and micro-crustacean taxa from inland waters across seven regions of the Russian Arctic, including the Putorana Plateau (Region V), reveals a rich diversity of freshwater micro-invertebrates. The study consolidates both original field data and historical records spanning 1960–2017, providing the most extensive taxonomic list to date for these remote Arctic ecosystems. Samples were collected from lentic waterbodies during summer campaigns, with additional insights derived from sediment cores and literature reviews. This dataset, encompassing Rotifera, Cladocera, and Copepoda, serves as a critical resource for understanding Arctic freshwater biodiversity and its regional variations.
Morphological Features and Endoparasite Fauna of Some Whitefishes and Grayling Fishes from the Eastern Part of Lake Sobachye (the Putorana Plateau)
Research on Lake Sobachye, part of the UNESCO-listed Putorana Plateau, reveals significant insights into the morphological features and endoparasite fauna of cisco, round whitefish, and Siberian grayling. The study found that the local cisco population exhibits a low average number of vertebrae, distinguishing it from other cisco species, and shows strong genetic similarity to European vendace populations. Additionally, the round whitefish in this region is confirmed as a single population with no basis for distinguishing between 'Arctic' and 'Boreal' groups. Notably, the study identified Lake Sobachye as a site of diphyllobothriasis, with cisco and whitefish acting as carriers of the cestode Diphyllobothrium dendriticum. The prevalence of this parasite in cisco has increased dramatically from 73% to 96%, along with a doubling in infestation intensity since previous studies.
Structure and Dynamics of Tree Stands at the Upper Timberline in the Western Part of the Putorana Plateau
Research on the Putorana Plateau reveals that forest expansion at the upper timberline, particularly on south- and southwest-facing slopes, is driven by climate warming over centuries. The study found significant changes in the altitudinal position of tree vegetation boundaries, with correlations between trunk diameters and phytomass fractions. By analyzing age structures, diachronous topographic maps, and satellite images, scientists reconstructed historical dynamics of tree stands, highlighting how shifts in climate conditions facilitate forest growth at higher elevations.
Anthropomorphic sculptures (idols) of Putorana plateau
Anthropomorphic sculptures (idols) on the Putorana Plateau, crafted from larch trunks without roots, are likely of Evenki origin and served as soul-keeper statues, reflecting a complex blend of indigenous religious beliefs. These idols, left behind by the Evenkis and Dolgans during their transition from nomadic to sedentary lifestyles, represent a material manifestation of historical idolatry systems. The study, combining ethnographic and geographical methods with informant data, confirmed that these sculptures were not portable and played a significant cultural role for native minorities. The research also highlights the enduring superstitions and traditions among modern Evenkis and Dolgans, integrating elements of Yakut, Nganasan beliefs, and Christianity.
Morphological and Genetic Features of Cisco (Coregonidae: Coregonus sp.) from Lake Sobachye (Putorana Plateau)
A study of cisco (Coregonus sp.) from Lake Sobachye on the Putorana Plateau reveals a strong phylogenetic relationship with the vendace (Coregonus albula). Analysis of morphological traits and mitochondrial DNA polymorphism indicates that the Lake Sobachye population shares significant genetic and structural similarities with the vendace, challenging existing hypotheses about its origin. This research provides new insights into the evolutionary history of cisco species in the region, particularly their connections to both the vendace and the least cisco.
New Data on Biota of Some Lakes in the Western Part of the Putorana Plateau
A recent study on the Putorana Plateau's lakes, including Norilsk Lakes (Lama and Sobach’e) and Kutaramakan Lake, identified two new species: Senecella calanoides in zooplankton and five water mite species in zoobenthos. The research, conducted in 2013–2014, revealed that Lama and Sobach’e lakes share similar zooplankton compositions, differing from Kutaramakan Lake by the presence of specific copepods. A total of 64 benthic invertebrate taxa were found, with Chironomidae dominating. Kutaramakan Lake lacked amphipods, while Cobach’e Lake exhibited higher biomass, classifying it as oligotrophic to α-mesotrophic based on zooplankton and zoobenthos metrics. Lama and Kutaramakan lakes were deemed ultraoligotrophic.
Liverworts of Putorana Plateau (East Siberia): an updated checklist
A comprehensive updated checklist of liverworts from the Putorana Plateau, East Siberia, reveals 118 species, with 47 recorded for the first time. Notable discoveries include Odontoschisma francisci and Saccobasis polymorpha, which exhibit amphi-oceanic distribution patterns, along with other rare taxa like Endogemma caespiticia and Marchantia romanica. The study confirms the plateau's Hemiarctic flora while debunking 26 previously reported species that could not be re-verified. This research synthesizes recent collections with historical data to refine our understanding of this unique Arctic ecosystem.
Morphological and genetic features of cisco (coregonidae: coregonus sp.) from lake Sobachye (Putorana plateau)
A study of cisco (Coregonidae: Coregonus sp.) from Lake Sobachye on the Putorana Plateau reveals that this population is genetically and morphologically closer to European vendace (C. albula) than to other regional cisco species, such as those found in the River Pyasina. The research combined morphological analysis of 60 specimens with mitochondrial DNA sequencing of two gene fragments (ND1 and COI) from nine individuals, demonstrating minimal genetic divergence between Lake Sobachye cisco and vendace. This finding challenges previous taxonomic assumptions based solely on vertebral counts and highlights the importance of integrated morphological and molecular approaches in fish species identification.
The Glaciation of River Imangda Valley (Western Part of Putorana Plateau) in the Late Pleistocene and Holocene
Research on the Imangda River valley, part of the Putorana Plateau, reveals four distinct moraine complexes formed during different stages of glaciation. Three of these correspond to known Late Pleistocene deglaciation phases in northwest Siberia: Karaulskaya (25–17 ky BP), Nyapanskaya (15–13 ky BP), and Norilsk (11.5–10.4 ky BP). These moraines exhibit variations in preservation, material roundness, and extent, indicating a dynamic glacial history. The study also identifies a younger moraine from the Little Ice Age, where glaciers were confined to cirques. Unlike previous assumptions, evidence suggests no solid ice cover over the plateau, though isolated ice caps with outlet glaciers may have existed. This research clarifies the complex glaciation patterns of the region during the Late Pleistocene and Holocene.
Peculiarities of soil cover in the subalpine belt of the Putorana Plateau
A distinct soil classification emerges for the subalpine belts of the Putorana Plateau, revealing cryometamorphic soils (granuzems) and organic-accumulative soils as dominant in mountain tundra, alongside abrazems. In contrast, lowland forest-tundra areas are characterized by cryoturbated soils (cryozems), primarily developing on sandy loamy glaciolacustrine deposits. This study leverages a substantive-genetic classification framework, integrating morphological and physicochemical data to elucidate the unique soil dynamics shaped by subaerial aeolian processes in these high-altitude ecosystems.
Regularities of spatial differentiation of fauna and bird population on the Putorana Plateau
Bird species diversity and population density on the Putorana Plateau decline with altitude, with the most significant drop occurring between subalpine and alpine belts. Most species span multiple altitude belts, but their abundance decreases from west to east across the plateau. Forest belt bird communities exhibit greater stability and homogeneity compared to alpine and subalpine belts, showing minimal fluctuations in diversity and density. The study analyzed 137 nesting bird species, revealing that population dynamics tend to increase toward peripheral regions of mountain systems.
Zooplankton of lakes in the spurs of the Putorana Plateau and adjacent territories (North of Krasnoyarsk Krai)
A comprehensive analysis of zooplankton communities in the Putorana Plateau and adjacent territories reveals that calanoid copepods dominate in terms of biomass, accounting for 78.8% of cases, with Heterocope appendiculata being the most frequent subdominant species (26.9%). The study, conducted across four large and 35 small lakes from 10 areas between 2001 and 2004, identified 14 crustacean zooplankton species for the first time in the region and expanded the known range of several species. Notably, cladoceran biomass exceeded 50% only in 31% of cases, indicating a prevalence of copepods in these ecosystems. The research also highlights that zooplankton diversity increases from north to south and east to west, correlating with climatic gradients. These findings suggest potential impacts of global warming on species distribution and community structure.
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