Dmitry A. Subetto

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• Prof.Dr.
• Head of Faculty at Herzen University

Onega Ice Lake developed in front of the receding Late Weichselian ice margin in Russian Karelia. Glacial varves that formed in Onega Ice Lake have been earlier studied by means of varve counts, palaeomagnetism and ¹⁴ C AMS dates from small lakes north of modern Lake Onega and from Lake Onega proper. Synchronous changes in magnetic parameters and s...

GIS-based reconstructions of Lake Onego development in the Late Pleistocene and the Holocene are presented. Reconstructions originated from the ideas of the Lake Onego depression deglaciation model proposed by I. N. Demidov and the isobase data of E. I. Devyatova. Twelve digital paleogeographic maps were developed and now are available on-line. The...

The analysis of both the mineralogical and geochemical composition and the stratigraphy of Holocene sediments of Lake Onego provided a novel interpretation of their genesis. Their mineral composition suggests that Holocene bottom sediments generally inherit the composition of terrigenous material that enters the lake with river runoff. The predomin...

Abstracts of the 4th Paleolimnological Conference, Irkutsk, Russia, 2-4 September 2020

VI International conference "Paleolimnology of Northern Eurasia", 25-29 August, 2024/ Krasnoyarsk, Russia

This work examines the geological and geomorphological structure of the depression of Lake Ladoga, the largest European freshwater basin. The history of the development of Lake Ladoga from the time of the last Eemian (Mikulino) Interglacial to the final deglaciation and the formation of the present-day waterbody is discussed. All modern data on the...

The features of the formation of the relief of the Solovetskiy Islands at different stages of develop ment under the influence of natural and anthropogenic factors are considered. In the pre-Quaternary, denudative plains were dominant here. In the late Pleistocene, glacial and glaciolacustrine plains were formed. In the Holocene, glacial plains wer...

The article is devoted to the history of the development of the Pre-Baltic Sea stages at the turn of the Late Pleistocene and Holocene. It is shown that, despite the long history of studying this issue, there are still white spots that prevent the formation of an accurate and complete paleogeographic picture. A brief history of the development of t...

Some results of the study of bottom sediments of Lake Pertozero (Onega Coast of the White Sea) are presented – section stratigraphy, loss on ignition, diatom and chironomid analyses. At the initial stage of its development, the lake basin was part of a periglacial basin. Since its isolation around 11000 years ago, the lake has experienced several c...

The article focuses on the paleoclimatic reconstruction of Holocene environmental changes. To address this issue, a study of the bottom sediments of Lake Geographensee, located on the Fildes Peninsula, King George Island, West Antarctica, was conducted. The lake, located above the maximum Holocene marine transgression limit, preserves an undisturbe...

Eurasian permafrost soils contain large amounts of organic carbon (OC) and mercury (Hg), sequestered by vegetation during past and present interglacial periods. Lake sediment archives may help understand past OC and Hg dynamics and how they interact with climate‐related variables. We investigated Hg accumulation, OC dynamics, and Hg and OC stable i...

The special issue of the journal “Limnology and Freshwater Biology” presents the materials of the Sixth International Conference “Paleolimnology of Northern Eurasia” and the school of young scientists, which was held in Krasnoyarsk from August 25 to 29, 2024 on the basis of the Siberian Federal University and the Institute of Biophysics of the Kras...

The study is focused on the litho-and biostratigraphic record of Lake Lavijarvi, presently a small lake in the closest vicinity from the Ladoga coast, and formerly a sheltered bay of Lake Ladoga. Several stages of its evolution were revealed that are characterized with different organic matter content in the sediments, diatom assemblages compositio...

Lake sediment sequences of the small Lake Nadbannoye on Anzer Island (Solovetsky Archipelago,White Sea) have been analyzed. Lake located at the highest elevation of 20–21.5 m a. s. l. relative to other lakes studied on the island. Based on the results of pollen analysis, the dynamics of vegetation from the Late Glacial period and during the Holocen...

The special issue of the journal “Limnology and Freshwater Biology” presents the materials of the Sixth International Conference “Paleolimnology of Northern Eurasia” and the school of young scientists, which was held in Krasnoyarsk from August 25 to 29, 2024 on the basis of the Siberian Federal University and the Institute of Biophysics of the Kras...

Lake sediment sequences of the small Lake Nadbannoye on Anzer Island (Solovetsky Archipelago, White Sea) have been analyzed. Lake located at the highest elevation of 20–21.5 m a. s. l. relative to other lakes studied on the island. Based on the results of pollen analysis, the dynamics of vegetation from the Late Glacial period and during the Holoce...

The work is devoted to clarifying the history of the development of the White Sea in the Late Neopleistocene-Holocene by combining land and sea research in one project. The work was carried out in the Kandalaksha Bay of the White Sea, on the Solovetsky Archipelago and adjacent water area, and on the southern coast of the Kola Peninsula. New seismic...

Paleolimnological studies of the Lososinskiy Reservoir (Karelia) have made it possible to reconstruct the history of its development from the Ice Lake to the artificial waterbasin. Five stages of sedimentogenesis were identified. It was based on lithostratigraphy, diatom and geochemical analysis of bottom sediments. The detailing of the anthropogen...

The article provides a review of GIS-based reconstructions of the development of Lakes Onego and Ladoga in the Late Pleistocene. It is shown that recently GIS methods have been used for reconstructions. At the moment, there are three GIS-based paleoreconstructions of the study area (Gorlach et al., 2017; Zobkov et al., 2019; Anisimov, Minina, 2020)...

Despite more than 100 years of research, a number of questions concerning the evolution of the post-glacial connection between Lake Ladoga, the largest European lake, and the Baltic Sea remain unanswered. In particular, the location and chronological frames of the paleo-outlet from Lake Ladoga in the Holocene remain debatable. Paleolimnological stu...

Paleolimnology is a rapidly expanding field within the natural sciences. To date, many scientific papers have been published focusing on studies of remains from single sediment cores in specific lakes, or a few cores from the same water body. However, few previous publications have provided a comprehensive comparative analysis of taphocenosis (and...

Carbonaceous (shungite) rocks have high contents of trace elements, which can get to the environment through natural weathering. Shungite rocks are a group of Precambrian carbonaceous rocks of volcanic and sedimentary genesis in Karelia. In this work we present results of studying the mineral and geochemical compositions of shungite rocks at their...

The paper examines the grain size distribution of bottom sediments of lakes in the Shoksha Ridge area, Karelia, to elucidate howdeglaciation and formation of the Onego Ice Lake basin proceeded. A sequence of bottom sediments of Lake Anashkino and two sediment sequences of Lake Rzhanoe were studied, and lithostratigraphy of the sediment cores was de...

The article presents the results of seismoacoustic studies carried out in Petrozavodsk Bay of Lake Onega. The goal was to study a near-surface geological section. Seismoacoustic studies were done by the reflection method in a modified ultra-high-resolution seismic survey. The data were office processed and interpreted: five seismic complexes were i...

The work presents the results of a comprehensive mineralogical and geochemical study of Late Pleistocene-Holocene bottom sediments of Lake Onego and small lakes located in the territory belonging to Onego Ice Lake. Methods of ICP-MS, atomic absorption spectrometry, X-ray fluorescence analysis, X-ray phase method (XRD), scanning electron microscopy...

Настоящий сборник представляет доклады, сделанные на Всероссийской научной конференции «Перигляциал Восточно-Европейской равнины», посвященной проблемам комплексного изучения палеогеографии, четвертичной геологии и геоморфологии поздневалдайской криолитозоны. География представленных исследований распространялась и на территорию Западной Сибири, чт...

Eurasian permafrost soils contain large amounts of organic carbon (OC) and mercury (Hg), sequestered by vegetation during past and present interglacial periods. Lake sediment archives may help understand past OC and Hg dynamics and how they interact with climate-related variables. We investigated Hg accumulation, OC dynamics, and Hg and OC stable i...

Since 2014, the joint research team from the Institute of Earth Sciences, Northern Water Problems Institute KRC RAS, the Science Park of Moscow State University, as well as FSBI “VNIIOkeangeologia”, and Herzen State Pedagogical University of Russia has begun a study of Quaternary deposits of Onega and Ladoga Lakes, the largest Russian lakes located...

A large amount of data on geological structure, quaternary deposits and bottom sediments of Lake Ladoga was obtained during the last 70 years. Meanwhile, bottom geomorphology of the lake is poorly studied. In most of cases geomorphological description includes only short morphometric characteristics and large-scale bottom elements description. In t...

The geochemical characteristics of environments can be developed from geochemical studies of sedimentary rocks. Different geochemical indicators can be used for the paleoenvironmental reconstruction of processes of sedimentation. Trace and major elements in sedimentary rocks are extremely sensitive to paleoenvironmental changes, making them informa...

This reprint considers a vast range of questions devoted to environmental geochemistry. The Special Issue “Environment and Geochemistry of Sediments” includes 10 papers. The themes of research cover different problems of the geochemistry of sediments, such as the reconstruction of the paleoenvironment in the lake basins in the high latitude zones o...

The geochemical characteristics of environments can be determined via geochemical studies of sedimentary rocks [...]

For the first time for saline lakes of the Crimean Peninsula, the results of a comprehensive study of lacustrine sediments using litho-, bio-and chronological methods were obtained. For the first time, radio-carbon dating of the Crimean lake sediments was performed. In lakes Saki and Dzharylgach, sediment sequences of closed highly mineralized rese...

For the first time for saline lakes of the Crimean Peninsula, the results of a comprehensive study of lacustrine sediments using litho-, bio- and chronological methods were obtained. For the first time, radiocarbon dating of the Crimean lake sediments was performed. In lakes Saki and Dzharylgach, sediment sequences of closed highly mineralized rese...

Boreal vegetation is influenced by multiple factors such as climate and fire, but interactions between long- and short-term effects of climate upon fire activity are complex and remain poorly studied, especially in Eurasia. To understand the relationships between climate, fire and vegetation in Eurasia, we reconstruct the climate changes during the...

The spatio-temporal variability of the modern sedimentation process in Lake Onego, the second largest lake in Europe, was evaluated. The chemical composition of the lake water was studied. Sedimentation takes place in the oxidation conditions of low TDS water of the calcium bicarbonate type, where the ratio between terrigenous clastic material and...

This paper discusses the results of siliceous microfossils studies performed in a “staircase” of four isolation basins (33.7 m–2.9 m a.s.l.) on Big Solovetskiy Island (Solovki Archipelago, the White Sea). Diatoms were used as a primary group for paleoinferences, while chrysophyte cysts and sponge spicules also demonstrated high indicative potential...

The article discusses changes in the level of the Baltic Sea. The main method of research is diatom analysis of bottom sediments of lakes. As part of the study, 3 lakes of the Karelian Isthmus were selected, located at different elevations. The article presents the results of diatom analysis of bottom sediments of Lake Zaychikhinskoye, reconstructs...

Sediments of lakes located on Anzer Island (Solovetsky Archipelago, White Sea) are cored and studied. Radiocarbon dating, diatom analysis, loss-on-ignition analysis are carried out. The time of isolation of lakes from a large basin is established. The shoreline displacement curve for the second half of the Holocene for this territory is constructed...

The current special issue (SI) of QI presents the articles based on scientific reports presented at the 4th International conference “Paleolimnology of Northern Eurasia". The current Special Issue (SI) of QI includes 14 articles that present new data obtained from the lakes geographically distributed from the Kuril Islands in the Far East to coasta...

The reconstruction of relative sea level changes based on the method of isolated basins and geomorphological studies. Three geomorphological levels are distinguished: moraine plain influenced by Late Glacial transgression (24–30 m a.s.l.), predominantly abrasive marine terrace formed during the Middle Holocene transgression (14–17.5 m a.s.l.), abra...

Paleolimnological studies have been performed at 9 lakes at the Anzer Island (Solovetsky Islands, the White Sea). Changes in lithostratigraphy and organic matter content in the sediment sequences reflect changes in sedimentation environments related to the isolation from larger basins. Based on the Holocene dynamics of organic matter content, three...

This paper presents for the first time data on the lateral distribution of total mercury in the water-suspended matter-bottom sediments system for the entire water area of Lake Onego, the second largest lake in Europe. The patterns of the total mercury vertical distribution in two types of bottom sediments stratification, have been established. The...

The paper presents the results of chronological and lithostratigraphic studies of five small lakes located in the northern part of the Karelian Isthmus, where the hypothetical connection between Lake Ladoga and the Baltic Sea existed until the second half of the Holocene when the Neva River broke through in the south. Stratigraphic sequences of the...

The data of mineralogy and geochemistry of suspended matter in water (filtered 0.45 microns), suspended solids (from filters of snow-fallen, river, lake waters) are compared from different parts of Lake Onego. We revealed the mineral composition of the suspended matter differs in the absolute contents of the suspended matter in the water, the ratio...

The study of the siliceous microalgae (diatoms and chrysophytes) enabled reconstructing the evolution of the ecosystem of the Unitskaya Bay, the northern bay of Lake Onega. Changes in the composition of diatom assemblages, floristic diversity and abundances of siliceous microalgae indicated past productivity changes, as well as shifts in duration o...

The study examines the issues of changes in the level of the Baltic Sea over the past 10 thousand years. According to the data of domestic and foreign authors on time, there is no unambiguous data on the duration and level of littorina transgression, which is considered the largest during the Holocene period. By the research, with the financial sup...

The Ice battle is one of the most famous battles in Russian history. However, there is still no clearly answer as to where the Ice battle took place. Paleogeographic reconstructions can help in finding the place of the battle. The study area is a section of the southern part of Pskovsko-Chudskoe Lake. The works were carried out in the vicinity of S...

The study of the geochemical and mineral composition of the bottom sediments of Lake Onega (the Petrozavodsk Bay) described fundamental differences between the chemical composition of sediments formed at the Holocene and Upper Pleistocene. It suggested the reason for mechanical to chemical type of weathering.

Lake Onego is a very important source of fresh water and traffic artery of Russian NW. In addition, it is a very significant source of paleogeographical and Quaternary geological information. Studies of geology, geomorphology, paleolimnology and ecology of Onego and Ladoga lakes are being conducted since 19th century by different institutes and res...

The data on the lake morphometry and sediment lithostratigraphy of the Lake Onego watershed were collected. The classification of lakes was carried out according to the genetic features of relief. Four types of the lakes have been identified for the catchment area. The structural features of lake basins and bottom sediments were determined for each...

During the last years major progress in the reconstruction of the climatic and environmental history of Northern Eurasia has been made within the scope of the Russian-German project PLOT. The project aimed at investigating the regional responses of the quaternary climate and environment on external forcing and feedback mechanisms along a more than...

Sediment stratigraphy and dynamics of organic accumulation of eight small isolation basins at the Kindo Peninsula and its surroundings (Karelian Coast of the White Sea) were studied. The sediments structure and organic matter dynamics were found to depend on the age of the isolation that, in turn, depends on the lake s elevation. The thickest gyttj...

The data on studies of sedimentation processes in the Lake Onego were collected. The research program includes monitoring of atmospheric precipitation, the river flow, the distribution of suspended matter in the water column, the flow of suspended matter to the bottom and point source of pollution. The distribution and accumulation rates of sedimen...

Age–depth relationships are the key elements in paleoenvironmental studies to place proxy measurements into a temporal context. However, potential influencing factors of the available radiocarbon data and the associated modeling process can cause serious divergences of age–depth relationships from true chronologies, which is particularly challengin...

This study presents the results of lithological, diatom, geochemical analyses and radiocarbon chronology of the bottom lake sediments and peat bogs in the central part of the Onega Peninsula (the southern coast of the White Sea): Lake Maloye Murakanskoye (11.0 m a.s.l.), Lake Zhirovskoye (9.5 m a.s.l.), Lake Murakanskoye (7 m a.s.l.), and the Gorbo...

The paper deals with an overview of early anthropogenic impact on the landscapes of the southeastern Baltic region and is based on the results of palaeolimnological and archaeological studies carried out on the Vishtynets Upland, Kaliningrad oblast, Russian Federation. The detailed study of available palynological (including microcharcoal), geochem...

The study is devoted to revealing the types and intensity of anthropogenic impact on the landscapes of the Vishtynets Upland (SE Baltic, Kaliningrad region, Russia) throughout the prehistory and the Middle Ages by combining available paleolimnological and archaeological information. Results from lithological, palaeobotanical, isotopic (14C) and geo...

For this Special Issue, we invite authors to submit papers on topics related to geochemistry, mineralogy, and geochronology of natural and anthropogenic sediments and environmental conditions of their formation.

Message from the Guest Editors Dear Colleagues, The geochemical characteristics of environments can be developed from geochemical studies of sedimentary rocks. Different geochemical indicators can be used for paleoenvironmental reconstruction of processes of sedimentation. Trace and major elements in sedimentary rocks are extremely sensitive to pa...

—This paper presents the first data on the mineralogy, geochemistry, and quantitative distribution of suspension determined with the use of sedimentation traps installed in Lake Onego (the exposure time was one year (2019)). The obtained data on the mineralogic and geochemical composition of the recent suspension of the Onego water column are compa...

The ‘route from the Varangians to the Greeks’ is widely known and often mentioned in research, popular science and educational literature. Much less often is it mentioned that the existence of the trade route is seriously doubted and needs additional evidence. The discussion about the actuality of a ‘route from the Varangians to the Greeks’ has int...

The article is dedicated to the famous Russian paleolimnologist and diatomist Natalya Naumovna Davydova (6.07.1931–23.07.2014) and opens a series of publications prepared for her 90th birthday. N. N. Davydova devoted her life to studying the lakes history. The geography of the lakes she has studied is wide: from the Kola Peninsula to Central Asia a...

Age-depth correlations are the key elements in paleoenvironmental studies to place proxy measurements into a temporal context. However, potential influencing factors of the available radiocarbon data and the associated modeling process can cause serious divergences of age-depth correlations from true chronologies, which is particularly challenging...

A multi-proxy paleolimnological analysis of a sediment core sequence from Lake Malaya Chabyda in Central Yakutia (Eastern Siberia, Russia) was conducted to investigate changes in lake processes, including lake development, sediment and organic carbon accumulation, and changes in primary productivity, within the context of Late Pleistocene and Holoc...

Terraces at four hypsometric levels were studied in the Vuoksa River basin (northern part of the Karelian Isthmus, NW Russia). New data on nine sections of late Quaternary–Holocene sediments have been obtained. Their age has been determined (for the first time for surface deposits in the studied region) in the interval from 90 to 2 ka. The terrace...

В бассейне р. Вуокса (северная часть Карельского перешейка, СЗ России) изучены террасы четырех гипсометрических уровней. Получены новые данные по девяти разрезам позднечетвертичных-голоценовых отложений. Их возраст впервые для поверхностных отложений в изучаемом регионе определен в диапазоне от 90 до 2 тыс. лет назад. Отложения в теле террас наруше...

We used waterborne Ground Penetrating Radar (GPR) for mapping stratigraphic boundaries, sedimentation environments, and specific features of lacustrine sediments of postglacial Lake Polevskoye, which is located in Eastern Fennoscandia, near Lake Onega. The purpose of our study was to examine the spatial structure of the lacustrine sediments includi...

As a result of cross-instrumental dating of the quaternary sediments of the Sambia (Kaliningrad) peninsula, a time series was obtained that indicates the formation of a sequence that overlaps the sediments of the Last Glaciation in the Late Holocene under subaerial conditions with active Aeolian accumulation starting from 450–400 BP. The previously...

We present a compilation and analysis of 1099 Holocene relative shore-level (RSL) indicators located around the Baltic Sea including 867 relative sea-level data points and 232 data points from the Ancylus Lake and the following transitional phase. The spatial distribution covers the Baltic Sea and near-coastal areas fairly well, but some gaps remai...

A study was conducted on the buried soils identified at the base of the foundation of the Cabin of Peter the Great in Saint Petersburg, Russia, to help trace the Late Holocene landscape evolution in the lower reaches of the Neva River. The Cabin is a small wooden house, which was the first residence of Peter the Great in a newly emerged Saint-Peter...

Data on the mineralogy and geochemistry of rare earth elements (REE + Y) in water, suspended matter and stratified sediment cores from different parts of Lake Onego are presented. The study finds that the dissolved REE + Y in the water from different areas of Lake Onego have common features: (1) a maximum in the area of middle rare earth elements (...

• Geochemistry • Sediments • Paleoclimate • Pollution • Paleoenvironment • Geochronology • Isotopes • Geoecology • Anthropogenic activity

Many publications have been devoted to the geological and geomorphological study of both Lake Ladoga and Lake Onega – the largest lakes of Northwest Russia and Europe. The last comprehensive geological studies of Lake Onega were carried out by Polar Marine Geosurvey Expedition as part of a geological survey at a scale of 1: 500,000 [12] and by Finn...

The PaleoLake Database contains available information on the lithostratigraphy, biostratigraphy and chronostratigraphy of bottom sediments from numerous lakes located on the East European Plain and nearby regions. The database includes results from more than 70 years of paleolimnological investigations, with information on deposits from 287 water b...

Concentration and distribution of trace elements across the sequence of the Late Pleistocene sediments from the lake Medvedevskoye suggest the addition of materials other than those from a common source for the lake sediments of the region. The sediments of the lake Medvedevskoye carry some geochemical fingerprints which could be related the ET eve...

The Late Pleistocene and Early Holocene were time periods of significant transitions between glacial and warm climate states. In this contribution, a study of changes of diatom assemblage compositions in recurrence plots, rarefaction models, and their rank abundance distributions (Fisher's alpha) in the Southeast Baltic is presented. Three sites we...

Lacustrine sedimentary records are valuable archives of regional paleoenvironmental and paleoclimatic changes. High-resolution seismic reflection data collected in 2013, in conjunction with data from sediment core Co1309, provide a detailed reconstruction of the preglacial and postglacial environmental and sedimentological history of Lake Ladoga (N...

Preglacial environments in Lake Ladoga, the largest European lake, located within the limits of the Scandinavian glaciations, are very poorly investigated compared to postglacial ones. They were primarily reconstructed based on the studies of terrestrial boreholes and outcrops, often incomplete and poorly dated. Previous diatom studies established...

The article deals with the study of changes in the level of the Baltic Sea over the past 10 thousand years on the basis of diatom analysis of lake sediments of the Karelian Isthmus. A brief review of the development of the eastern part of the Gulf of Finland of the Baltic Sea is made according to the data of domestic and foreign authors on the time...

Here, we present new results from seismic, geological, and geochemical studies conducted in 2015-2019 in the Petrozavodsk Bay of Lake Onego, NW Russia. The aims of these investigations were to (i) to characterize the structure of Quaternary deposits and (ii) provide new evidence of modern geodynamic movements and gas-seepage in Holocene sediments....

Chromium isotope and chemical compositions in runoff from two felsic rock catchments, the Lysina (LYS; Czech Republic) and the Neglinka (NEG; northwest Russia), were studied. Three types of water were identified: Na-Ca-SO4 type for the LYS, Mg-Ca-Cl-HCO3 type for the NEG downstream, and Mg-Ca-Cl to Mg-Ca-HCO3 type for the NEG upstream. The Cr(III)...

We present the preliminary results of the granulometric and geochemical analyses of lakebottom sediments obtained from the Murmanskoe and Maloe Murmanskoe lakes. Based on the collected data, we reconstructed changes of relative sea-level (RSL) in the Gulf of Dvina (White Sea) during the Holocene. The conditions and maximum levels of two transgressi...

The article is devoted to a reconstruction of the sedimentation processes in Kamyshovoye Lake (the Kaliningrad Region, Russia) during the Late Glacial and Holocene. The results of the geochemical analysis of Kamyshovoye Lake’s bottom sediments, accompanied by statistical processing and detailed radiocarbon dating, are presented. It was established...

Russian-German project PLOT (Paleolimnological Transect) aims at investigating the regional responses of the quaternary climate and environment on external forcing and feedback mechanisms along a more than 6000 km long longitudinal transect crossing Northern Eurasia. The well-dated record from Lake El´gygytgyn used as reference site for comparison...

The study of organic matter dynamics in small lakes sediments in the Lake Ladoga area during the Late Pleistocene Holocene enabled identifying certain patterns corresponding to the main stages of the paleobasins evolution, from the Baltic Ice Lake, to Lakes Ancylus and Ladoga, and subsequently to the present-day small lakes.

The article presents results of analysises the loss on ignition and radiocarbon dating of the bottom sediments of Lake Terebenskoye. Based on the obtained data, a preliminary reconstruction of the sedimentation processes of lakes of the Valdai Upland in the Holocene is constructed. The stages of minerogenic sedimentation in the Older and Younger Dr...

The paper discusses the results of siliceous microfossils studies performed in a “staircase” of four lakes (isolation basins) at Big Solovetskiy Island (Solovki Archipelago). In all the study lakes the siliceous microfossils stratigraphy revealed three main stages of their evolution. The earlier stage, corresponding to being a part of a large basin...