bluuebunny/crossref_metadata_2025 huggingface dataset:
Increasing familiarity with the heartbeat counting task does not affect performance
Authors: Parfenov Evgeny A , Duncan Niall W
Published: September 2022

Background: Interoception is typically defined as the processing and perception of internal signals. A common evaluation of interoceptive abilities is via the perception of heartbeats, applied through the heartbeat counting task, during which participants count their heartbeats over a period of time. It has been argued recently, however, that performance in this task may reflect processes other than cardiac sensation.Objective: This study therefore aimed to: 1) observe heartbeat counting task performance changes across multiple repetitions of the task; and 2) compare performance in the heartbeat counting task with that for a visual counting task, designed to mirror the former, to investigate generalised propensities for how uncertain stimuli are reported.Methods: Seventy-nine healthy participants performed seven blocks each of the heartbeat and visual counting tasks. Performance in each task was compared across blocks to identify any increase or decrease in derived scores. Heartbeat counting and visual counting tasks performances were then correlated. These analyses were preregistered at https://doi.org/10.17605/OSF.IO/GWAB7.Results: Heartbeat counting task performance did not change over the seven blocks. In contrast, changes in scores derived from the visual counting task did differ across blocks, with performance degrading over time. A positive correlation was observed between the participant’s performance in the two tasks (Spearman’s ρ = .27).Conclusion: Heartbeat counting task performance is stable across repetitions of the task. This suggests that performance does not increase as one becomes familiar with the task. A positive correlation between the heartbeat counting task and the visual counting task may point to a general propensity in counting uncertain stimuli across exteroceptive and interoceptive domains, raising questions about the interpretation of the heartbeat counting task as a measure of interoception.
Perhitungan dan Analisa Petrofisik Lapangan Betung, Formasi Air Benakat, Sub-Cekungan Jambi-Cekungan Sumatera Selatan
Authors: Irmaya Aisyah Indah , Rahmad Basuki , Kristanto Deddy , Buntoro Aris
Published: September 2022

Potensi Sub-Cekungan Jambi cukup besar dalam menghasilkan hidrokarbon, dimana rasio kesuksesan yang dicapai sebesar 51% tapi belum dilakukan eksplorasi secara maksimal [9]. Salah satu strategi untuk meningkatkan produksi hidrokarbon dari lapangan migas yang sudah diproduksikan adalah dengan melakukan analisa petrofisik untuk penambahan sumur-sumur pengembangan. Penelitian difokuskan pada L-5 Formasi Air Benakat dimana potensi cadangannya masih cukup besar dengan OOIP L-5 pada tahun 2017 sebesar 16,531.05 MSTB.Metode dalam penelitian ini adalah dengan pengumpulan data primer yaitu data-data log sumur log yaitu Gamma Ray log, Resistivity log, Density dan Neutron log. Data sekunder yaitu literatur, laporan sumur. Menggunakan Petrel Petrophysic, data-data tersebut diolah untuk mendapatkan nilai kandungan lempung, saturasi air, porositas dan permeabilitasnya.Berdasarkan perhitungan dan Analisa petrofisik lapangan Betung, Formasi Air Benakat, Sub-Cekungan Jambi-Cekungan Sumatera Selatan: Sumur-sumur L-5 (AI-209; AI-210; AI-211; AI-222) memiliki nilai porositas dengan range 23% - 31 %, termasuk kategori sangat baik – istimewa [8]. Sumur-sumur L-5 (AI-209; AI-210; AI-211; AI-222) memiliki tingkat permeabilitas dengan range 130 – 229 mD, termasuk kategori baik sekali (Koesoemadinata, 1978). Nilai penggal diperoleh nilai kandungan lempung maksimal 32%, nilai kandungan porositas minimal 13% serta nilai kandungan saturasi air maksimal 50%.
Etnobotani Tanaman Pangan di Desa Cigedug Kabupaten Garut
Authors: Kurniati Yuli , Hernawati Diana , Putra Rinaldi Rizal
Published: September 2022

Tanaman pangan merupakan salah satu bahan yang menjadi kebutuhan penting dalam kehidupan masyarakat sehari-hari, baik dimanfaatkan secara langsung maupun diolah terlebih dahulu. Tujuan penelitian ini adalah untuk mendeskripsikan kajian etnobotani dan mengidentifikasi spesies-spesies tanaman pangan yang dimanfaatkan oleh masyarakat Desa Cigedug Kabupaten Garut Jawa Barat. Penelitian ini dilaksanakan pada bulan Juni 2021. Metode penelitian yang digunakan adalah pendekatan kualitatif dengan metode survey. Data dianalisis dengan Use Value (UV), Relative Frequency of Citation (RFC), dan Relative Importance (RI). Didapatkan 50 spesies 36 genus 26 familia 18 ordo tanaman pangan yang disebutkan oleh 15 responden yaitu 9 orang perempuan dan 6 orang laki-laki. Spesies yang disebutkan kemudian dikategorikan menjadi tanaman pangan berupa makanan pokok sebanyak 7 spesies, sayur-sayuran sebanyak 17 spesies, buah-buahan sebanyak 13 spesies, bahan minuman sebanyak 1 spesies dan bahan bumbu masak sebanyak 12 spesies. Teknik pengambilan sampelnya dengan menggunakan teknik purposive sampling. Adapun hasil perhitungan Use Value (UV) berkisar antara 0.07 – 0.8 dengan nilai paling tinggi yaitu Singkong (Manihot esculenta), nilai Relative Frequency of Citation (RFC) berkisar antara 0.07 – 2.07 dengan nilai paling tinggi yaitu Singkong (Manihot esculenta), dan nilai Relative Importance (RI) berkisar antara 0.08 – 1.54 dengan nilai paling tinggi yaitu Singkong (Manihot esculenta). Berdasarkan analisis tersebut dapat dikatakan bahwa singkong merupakan spesies penting yang dimanfaatkan oleh masyarakat Desa Cigedug.
Zeuxia cinerea Meigen new to the fauna of Northeastern Turkey (Diptera: Tachinidae)
Authors: Richter V.A. , Gültekin L. , Korotyaev B.A.
Published: September 2022

Xeuxia cinerea Meigen is for the first time recorded from Northeastern Turkey. The tachinid was reared from four new hosts, all species of the weevil genera Larinus Dej. and Rhinocyllus Germ. (Coleoptera, Corculionidae: Lixinae).
FINANCIAL SUPPORT MANAGEMENT OF ENTERPRISES IN MODERN CONDITIONS
Authors: Zakharchenko Tetyana
Published: September 2022

Domestic enterprises in modern conditions are faced with the question of the effectiveness of forming the necessary volume of financial support. The purpose of the article is to generalize the features of financial support in the conditions of martial law.

The work examines the essence of financial support of enterprises. The constituent elements of the system of financial support of economic activity are analyzed.

 The components and types of financial support are considered. The main components of the system of financial support of innovative activity are: subjects, objects, methods of financing, forms of financing, levers of influence on economic activity, monitoring and control over the financing of economic activity. According to the form of ownership, private and state financing are distinguished. Depending on the form of provision, financial support of industrial enterprises can be provided in the following forms: self-financing, lending, investment, state financing. Quite often, in order to maximize profit and ensure the optimal ratio, enterprises simultaneously use various forms of financial support.

The dynamics of such a source of self-financing as net profit is analyzed. Тhe share of enterprises that during 2016-2020 earned a profit, exceeded 70% and practically did not change.More than 25% of enterprises of all sizes operated at a loss, which indicates that they lack their own sources of financial resources. The use of such a source as depreciation deductions, which is explained by outdated fixed assets, is problematic for many enterprises.

In connection with the insufficient volume of such a source as self-financing, it is proposed to use loans from international financial organizations.
The artistic content in musical regional studies of Ukraine
Authors:   Nizhyn Gogol State University, Kavunnyk Olena
Published: September 2022

The paper considers the art content of Nizhyn in the musical regional studies researching the prominent musician persons. It displays the studies by scholars in philology, history theory of music in the context of reflection of facts, events, tradition and innovation by artists. It also considers their contribution to the musical regional studies as the organized knowledge about creation of big and small towns in Ukraine. It mentioned importance of musical regional studies for systematic reflection throw the time and space, shapes and specific aspects of musical life of a town. There are three historic periods in its development, comparing with epistolary and musician genealogy. It is also find the common sense between terms regional studies as a proof for definition as aspiration to find determination for its original meaning. It discovered impact using government’s bodies for financing of art performance, stimulation of research in archival records, conferences’, supporting community activities by citizens. We consider the musical regional studies as a source of scholar research, as a space for art performance by citizens for saving and developing of local musical tradition, displaying public performance for the interests to its town. It is determinate aspects for researching of small town. There are musician professionalism in the context of musician interest by citizens, repertoire, solo-singers in different ages, musical bands and their performance and the heritage of amateur compositors.
Music centers of Chernihiv-Siversky region: names, events, creative teams, repertoire (to the 100th anniversary of the M. D. Leontovich Music Society)
Authors:   Department of Theory and Methods of Biobibliography of the Institute for Biographical Investigations of V. I. Vernadsky National Library of Ukraine, Bugaeva O.
Published: September 2022

The study of music centers of Chernihiv-Siversky region in the context of the leading musical and public organization of the Ukrainian Renaissance – M. D. Leontovych Music Society (1921–1931) – opens wide opportunities for scientific research of hitherto unknown pages of the history of musical culture of Ukraine in XX century. Although the emergence of music centers in this period was due to a certain historical event and created in these lands after the tragic news on the death of the famous composer Mykola Leontovych, this process began long time before they received legal status as the members of the Society as its Chernihiv and Pryluky branches. Establishment of the branches of the Leontovych Society was associated with increasing the level of musical culture of the republic and was aimed to organize the process of unification of the Ukrainian people around the idea of national revival. All members of the Leontovych Society (not only the Pryluky and Chernihiv branches) had a responsible mission to be pioneers and reformers of musical culture in cities and villages, which at the time of the formation of the new Soviet art appeared to be the most important and difficult task. and coordinated work of each member of Leontovych Society, at the beginning of 1927 as its parts throughout Ukraine it was opened, registered and operated 69 branches and music centers, including about 930 members and 1013 musical organizations consisting of professional musicians and amateurs, who presented the school and student, peasant and workers’ choirs and ensembles, the chamber, brass, folk orchestras, etc. The history of the Leontovych Society’s activity turned out to be a kind of challenge to fate and a conscious putting on the altar of building the musical culture of Soviet Ukraine of the best human abilities, knowledge and strength, which became an unsurpassed example of the civic service to its people. The archival heritage of the Music Society named after MD Leontovych, preserved in the Fund № 50 of the Manuscript Institute of the National Library of Ukraine named after VI Vernadsky, was and is a unique document of Ukrainian history, which will forever remain for descendants an exclusive source of the information national past of Ukraine in many spheres of science, art and culture as a spiritual monument of our country.
The role of the Lysenko dynasty in the formation of the choral school in Ukraine (to the 80th anniversary of Vitaly Romanovich Lysenko)
Authors:   Академія мистецтв імені Павла Чубинського, Lysenko M.
Published: September 2022

The article investigates the sources of formation of conducting skills of Mykola Vitaliyovych Lysenko, and this is done not only in retrospect of the creative path of the individual, but above all – in the context of the birth and further development of a separate Ukrainian conducting school. A special role in this process was given to the years of study of Nikolai Vitalyevich at the Leipzig Conservatory. In particular, the structure of the artistic environment in which Lysenko was not just a listener but also an active participant is analyzed. The conductor's component in the creative work of Mykola Vitaliyovych's teachers was also determined, after which the conductor's "genealogical tree" was built, from which the conducting of the Ukrainian artist originates. And this allows us to declare the main vector of generation of Ukrainian conducting art is the European vector, which was later adapted by Lysenko and his students in the domestic cultural space. And later it was presented again in Europe and the world due to the active conducting activity of one of the brightest followers of Mykola Vitaliyovych, the genius Oleksandr Koshyts. Such a little-known and unexplored page of Ukrainian cultural life as the conducting activities of Lysenko's direct descendants is also considered. In particular, we are talking about his son Ostap Mykolayovych and great-grandson Vitaliy Romanovych Lysenko, who left a noticeable mark in this field of national musical art. But in this way they continued Lysenko's artistic principles, laid down by him in the late nineteenth and early twentieth centuries.
Genealogy and social genesis of the noble Panchenko family (middle of the XVII – XIX centuries)
Authors:   Nizhyn Gogol State University, Leiberov O. O.
Published: September 2022

The article is devoted to the consideration of several aspects of the social history of the Little Russian nobility of the XIX century. On the basis of archival documents, which are introduced into circulation for the first time, the author traces the complex process of nobilitation of the descendants of the Cossack-sergeant family to the general imperial nobility on the example of the noble Panchenko family from the city of Nizhyn. Comparing these processes on the Left Bank and on the lands of the Right Bank of Ukraine, the author reveals common features and regional differences. Having studied and analyzed genealogical, heraldic, sphragistic sources, the researcher draws attention to the difficulties encountered by the descendants of Cossack families in proving their «noble origin». On the example of the Panchenko family, we can state that this process lasted for almost two decades, and if we take into account how many years the family representative Ivan Ivanovich Panchenko served to get «starting opportunities» to start the process of proving his nobility, we should talk about a lifetime. Descendant of the famous Cossack family, father, grandfather, great-grandfather, who served in the Zaporozhian Army, went on campaigns with Bohdan Khmelnytsky, Ivan Samoilovich forced by all, even sometimes not quite legal ways, to prove their origin. The desire to be part of the noble nobility and take over for themselves and their families the privileges inherent in the nobility, sometimes push the seekers to outright deception. The analysis of archival documents allows not only to trace the life and career path of an «ordinary person from the province of Little Russia», but also to identify and evaluate his worldview and values, to look at the family-intimate and domestic side of life in a few centuries.
Modernization of china’s economy: achievements and prospects
Authors:   Nizhyn Gogol State University, Brovko A.
Published: September 2022

The article highlights the features of reforming the Chinese economy. It is noted that the process of reforming China’s economy began during the reign of Deng Xiaoping, who proposed a strategy to bring the state to key positions in the world economy. It was during this period that modernization and a policy of «reform and openness» were carried out. A feature of the Chinese economy is the programming of economic development, which has its roots in the middle of the twentieth century. Thirteen five-year socio-economic development plans have now been implemented. Another feature of the Chinese economy is the combination of state planned levers of management with market, ie the dominance of the model of «socialist market economy». Under Hu Jintao and Xi Jinping, they set out to build an innovative economy. However, despite the rapid pace of development of China, the republic still lags behind developed countries. The reason for this lag, according to the state leadership, is low innovation capacity. In recent years, the development of the country’s economy has been negatively affected by the trade war with the United States and the introduction of quarantine measures in connection with the COVID-19 pandemic, which led to the collapse of the Chinese economy by 6,8 %. In addition to an effective domestic policy, the Republic of China is active in foreign trade. The country’s largest trading partners are the United States, Hong Kong, Japan, Korea and the EU. Develops active relations with Latin American countries, India, Pakistan, Brazil, the African continent and the Arab world. China is an attractive country for foreign capital. Most foreign investment comes from China’s economic services sector. To become an attractive country for foreign investment, the Chinese leadership has taken a number of measures to create a favorable investment climate. As a result, China ranks second in the world in terms of nominal GDP. In the near future, China is projected to be ahead of the United States in economic terms and to become the most powerful country in the world.
Ritual: What It Is, How It Works, and Why
Authors: Davis-Floyd Robbie , Laughlin Charles D.
Published: September 2022

Designed for both academic and lay audiences, this book identifies the characteristics of ritual and, via multiple examples, details how ritual works on the human body and brain to produce its often profound effects. These include enhancing courage, effecting healing, and generating group cohesion by enacting cultural—or individual—beliefs and values. It also shows what happens when ritual fails.
Teachers' Empowerment and Organisational Commitment: A Perceived Perspective of Secondary School Teachers in Punjab
Authors: Mohammad Noor , Sajid Sajid Mahmood , Jamil Muhammad
Published: September 2022

This paper deemed a purpose to navigate the perception and to investigate the relationship between public secondary school teachers' empowerment and their organizational commitment. The secondary teachers of Punjab province working at public schools were the population of the study. The sample size was 1200 teachers who were selected randomly from the Punjab secondary school. 1103teachers sent back filled questionnaires that were a reasonable return rate of 92 percent. The mean, frequency and Pearson correlation were the statistical techniques used to analyze data. The findings of the study showed that teachers of secondary education perceived empowerment along with organizational commitment. Both the variables also had a strong positive correlation. So, it was recommended that teachers' empowerment and organizational commitment should be included in the training.
Arnold Max Meirowsky: champion of the American mobile neurosurgical unit during the Korean War
Authors: Wang Andy Y. , Bi Wenya Linda , Kelly Patrick D. , Klimo Paul , Riesenburger Ron I.
Published: September 2022

Dr. Arnold Max Meirowsky (1910–1984) was enormously influential to military neurosurgery during the Korean War, introducing to the American military the concept of the mobile neurosurgical unit. After implementation of the neurosurgical detachment, meningocerebral infections saw a decrease from 41% to less than 1%, with similar improvements in mortality and complication rates. Additionally, Meirowsky developed many techniques and improvements in neurosurgery, specifically in the field of neurosurgical trauma, which he dedicated himself to even after reentering civilian practice. Furthermore, his mentorship of Korean surgeons and the influence of his mobile neurosurgical unit were major influences cited to be pivotal to the founding of neurosurgery as a specialty in South Korea. As he is underrecognized for these accomplishments in the neurosurgical literature, the authors seek to review his wartime and career contributions. They also specifically present details of his standardization of the mobile neurosurgical unit and showcase several of his other advancements in the treatment of neurosurgical trauma.
On the new phylosophy of regional cooperation in Central Asia
Authors: Ziyadullaev Nabi
Published: September 2022

In the article some conceptual approaches to the development of a new strategy for regional development of Central Asia (CA) are substantiated in the context of foreign policy and economic tensions. The author reveals the geo-economic and integration priorities of the Central Asian states in developing strategic cooperation with each other, as well as with the neighboring countries and global powers.
On the competitiveness of manufacturing industry in the northern regions of Russia and the ways to improve it
Authors: Styrov Maxim
Published: September 2022

In the article the competitiveness of the classes of economic activity of the manufacturing industry in the northern regions of Russia is analyzed. Evaluation was carried out through matrix and cluster grouping according to four criteria: efficiency, dynamics of development, sustainability and social responsibility. Most and least developed groups have been identified. It was found that in some subgroups, fairly high financial results are combined with low wages for workers. As a way to solve the identified problems, mutual assistance of industries and regions is offered to each other, that is, an increase in the level of internal solidarity of the economic system.
Paleoreconstruction of environment of Northern Eurasia during the Pleistocene-Holocene inferred from lake sediment proxies
Authors: Subetto D.A. ,   Herzen State Pedagogical University of Russia, 48 Moyka emb, St. Petersburg, 191186, Russia, Fedotov A.P. ,   Limnological Institute Siberian Branch of the Russian Academy of Sciences, 3 Ulan-Batorskaya Str., Irkutsk, 664033, Russia
Published: September 2022

Abstract.
Evolution of the coastal Pitsunda Peninsula (Republic of Abkhazia) during Late Holocene
Authors: Avdonina  ,   Lomonosov Moscow State University, Vorobiovy Gory 1, Moscow, 119991, Russia, Zaretskaya  ,   Institute of Geography, Russian Academy of Sciences, Staromonetnyi per. 29/4, Moscow, 119017, Russia,   Geological Institute, Russian Academy of Sciences, Pyzhevsky lane 7/1, Moscow, 119107, Russia, Lugovoy  ,   Lomonosov Moscow State University, Vorobiovy Gory 1, Moscow, 119991, Russia,   Institute of Geography, Russian Academy of Sciences, Staromonetnyi per. 29/4, Moscow, 119017, Russia, Van  ,   Lomonosov Moscow State University, Vorobiovy Gory 1, Moscow, 119991, Russia, Pistsova  ,   Lomonosov Moscow State University, Vorobiovy Gory 1, Moscow, 119991, Russia, Smirnova  ,   Lomonosov Moscow State University, Vorobiovy Gory 1, Moscow, 119991, Russia, Posazhennikova  ,   Lomonosov Moscow State University, Vorobiovy Gory 1, Moscow, 119991, Russia, Bataev  ,   Lomonosov Moscow State University, Vorobiovy Gory 1, Moscow, 119991, Russia, Denisova  ,   Lomonosov Moscow State University, Vorobiovy Gory 1, Moscow, 119991, Russia, Yakovenko  ,   Lomonosov Moscow State University, Vorobiovy Gory 1, Moscow, 119991, Russia, Kotenkov  ,   Lomonosov Moscow State University, Vorobiovy Gory 1, Moscow, 119991, Russia
Published: September 2022

Abstract. The article presents the results of field research on the Pitsunda Peninsula in January- February 2022. Based on the data obtained, the scheme of coast development proposed by Balabanov (2009) is supplemented. The use of modern methods made it possible to clarify the topography, and drilling data formed the basis for reconstruction for the ancient period.
Northern Eurasian large lakes level changes in the context of late Quaternary climatic and glacial history
Authors: Fedorov  ,   St. Petersburg State University, Universitetskaya Nab. 7/9, St. Petersburg, 199034, Russia,   Arctic and Antarctic Research Institute, Bering Str. 38, St. Petersburg, 199397, Russia, Cherezova  ,   A.P. Karpinsky Russian Geological Research Institute (FGBU-VSEGEI), 74, Sredny prospect, St. Petersburg, 199106, Russia, Kostromina  ,   St. Petersburg State University, Universitetskaya Nab. 7/9, St. Petersburg, 199034, Russia, Ludikova  ,   Institute of Limnology, Russian Academy of Sciences, Sevastyanova 9, St. Petersburg, 196105, Russia, Mustafin  ,   A.P. Karpinsky Russian Geological Research Institute (FGBU-VSEGEI), 74, Sredny prospect, St. Petersburg, 199106, Russia, Pestryakova  ,   Department for Geography and Biology, North-eastern Federal University of Yakutsk, Belinskogo 58, Yakutsk, 67700, Russia, Pushina  ,   I.S. Gramberg AllRussia Scientific Research Institute for Geology and Mineral Resources of the Ocean, Angliyskiy av. 1, St, Petersburg, 190121, Russia, Savelieva  ,   St. Petersburg State University, Universitetskaya Nab. 7/9, St. Petersburg, 199034, Russia, Subetto  ,   Herzen State Pedagogical University of Russia, emb. Moika 48, St. Petersburg, 191186, Russia
Published: September 2022

Abstract. 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 6000 km long longitudinal transect crossing Northern Eurasia. The well-dated record from Lake El gygytgyn used as reference site for comparison the local climatic and environmental histories. Seismic surveys and sediment coring up to 54 m below lake floor performed on Ladoga Lake (North-West of Russia), Lake Bolshoye Shchuchye (Polar Ural), Lake Levinson-Lessing and Lake Taymyr (Taymyr Peninsula), Lake Emanda (Yana Highlands). Here, we present the major results of the project with a special focus on lake-level fluctuations and forcing mechanisms.
Lake Chukhlomskoe in the Late Pleistocene and Holocene (Kostroma region, Russia)
Authors: Filippova K.G. ,   1Institute of Geography RAS, 29 building 4 Staromonetny lane, Moscow, 119017, Russia, Konstantinov E.A. ,   1Institute of Geography RAS, 29 building 4 Staromonetny lane, Moscow, 119017, Russia, Borisova O.K. ,   1Institute of Geography RAS, 29 building 4 Staromonetny lane, Moscow, 119017, Russia, Kuzmenkova N.V. ,   Lomonosov Moscow State University, Chemistry Department, Radiochemistry Division, 1 building 10 Kolmogorov str., Moscow, 119234, Russia, Zakharov A.L. ,   1Institute of Geography RAS, 29 building 4 Staromonetny lane, Moscow, 119017, Russia, Medvedev A.A. ,   1Institute of Geography RAS, 29 building 4 Staromonetny lane, Moscow, 119017, Russia
Published: September 2022

Abstract. The article discusses the first results of geomorphological and paleolimnological study of Lake Chukhlomskoe (Kostroma region). We analyzed the topography of the lake bottom using new bathymetric data from 2021 fieldwork. The structure of the lake basin slopes was studied using hand drilling. Analytical characteristics of the bottom sediments core (grain size distribution, loss on ignition, magnetic susceptibility, AMS-dating and palynological data) are presented. The distribution of organic matter, carbonates and particle size by depth allow us to correlate the bottom sediments of Lake Chukhlomskoe with the sediments of other well-studied large lakes (Belaya Struga, Galichskoe and Seliger).
A multi-proxy study of Holocene environmental and climate change in the Pechora Delta
Authors: Frolova L.A. ,   Kazan Federal University, 18 Kremlevskaya str., Kazan, 420008, Russia, Nigamatzyanova G.R. ,   Kazan Federal University, 18 Kremlevskaya str., Kazan, 420008, Russia, Nigmatullin N.M. ,   Kazan Federal University, 18 Kremlevskaya str., Kazan, 420008, Russia, Valieva E.A. ,   Kazan Federal University, 18 Kremlevskaya str., Kazan, 420008, Russia, Frolova A.A. ,   Kazan Federal University, 18 Kremlevskaya str., Kazan, 420008, Russia
Published: September 2022

Abstract. The Arctic and subarctic regions have been the focus of a great deal of research during the recent years. Their high-latitude areas are thought to play a crucial role in climatic forcing and, thus, may be particularly sensitive to climate change. Arctic freshwater ecosystems are especially susceptible to the negative consequences of global environmental change drivers. Paleoclimatic investigations provide a better insight into the climate and environmental situation of certain regions and water objects in the past and help to predict their future changes, as well as to identify the development trends of the Earth s climate as a whole. The multy-proxy study of 96-cm long sediment core obtained in Lake Arcto-Pimberto (68 26.114 N, 053 32.311 E, the Pechora River delta, Nenets Autonomous Okrug) reflect regional paleoecological and climate changes in the north of the Eastern European plain over the last 6400 year. Based on the subfossil Cladocera, diatom and palynological analysis of the bottom sediment of the arctic lake Arkto-Pimberto, we received preliminary information on environmental and climatic changes, as well as on changes in vegetation character in the area around the water body.
The dynamics of macrophytes in Lake Vitalievskoye (Valaam Island, Russia) after level changes of Lake Ladoga during the Late Holocene
Authors: Gazizova T.Yu. ,   Institute of Limnology RAS  SPC RAS, 9, Sevastianova str., Saint-Petersburg, 196105, Russia, Sapelko T.V. ,   Institute of Limnology RAS  SPC RAS, 9, Sevastianova str., Saint-Petersburg, 196105, Russia, Rusanov A.G. ,   Institute of Limnology RAS  SPC RAS, 9, Sevastianova str., Saint-Petersburg, 196105, Russia
Published: September 2022

Abstract. Aquatic vegetation is a sensitive indicator of lake structural rearrangements, water level changes, overgrowth and waterlogging processes. Although macrophyte pollen may not be well preserved in lake sediments, it is a valuable source of information about an evolution of lakes. Continuing our previous researches on the use of macrophyte pollen analysis in paleolimnological studies, we have explored the sediments sequence of Lake Vitalievskoye on the Valaam Island (northern part of Lake Ladoga), that was isolated at the Ladoga regression for the Late Holocene. We have used pollen analysis of the sediments sequence with focus on the dynamics of aquatic vegetation. Based on our results, the macrophyte dynamics at every stage of the Lake Vitalievskoye development and relationship with the Lake Ladoga level changes in the Late Holocene were reconstructed.
Bottom sediments of the Eastern part of the Onega Peninsula Lakes in the context of the White Sea relative level changes
Authors: Kublitskiy Yu.A. ,   Herzen State Pedagogical University of Russia, 48 Nab. Moyki, St. Petersburg, 191186, Russia, Repkina T.Yu. ,   Herzen State Pedagogical University of Russia, 48 Nab. Moyki, St. Petersburg, 191186, Russia,   Institute of Geography RAS, 29 Staromonetnyy lane, Moscow, 119017, Russia, Leontiev P.A. ,   Herzen State Pedagogical University of Russia, 48 Nab. Moyki, St. Petersburg, 191186, Russia, Gurinov A.L. ,   Department of Landscape Design and Sustainable Ecosystems, Agrarian-Technological Institute, eoples Friendship University of Russia, 6 Miklukho-Maklaya Str., Moscow, 117198, Russia, Serdyukov A.G. ,   Herzen State Pedagogical University of Russia, 48 Nab. Moyki, St. Petersburg, 191186, Russia, Lugovoy N.N. ,   Herzen State Pedagogical University of Russia, 48 Nab. Moyki, St. Petersburg, 191186, Russia,   Faculty of Geography of Lomonosov Moscow State University, 1 Leninskie Gory, Moscow, 119991, Russia
Published: September 2022

Abstract. Geomorphological, ground penetration radar profiling and paleolimnological investigations were carried out in the Kobyl`e (11 m asl), Chevakino (7 m asl), and Lopshen`gskoye (1 m asl) Lakes. Based on the lithology data, we obtain the relative sea-level (RSL) changes in the northern part of Gulf of Dvina (White Sea, Arctic Ocean) during the Holocene. The levels of two transgressions (Late Glacial and Tapes) and one Early Holocene regression are identified. According to the lithology composition of bottom sediments, investigated lakes has a longer transitional stage, then lakes in 22 km to the south.
Geochemical features of river runoff and its influence on sedimentation processes in Lake Onego
Authors: Kulik N.V. ,   Northern Water Problems Institute of the Karelian Research Centre of the RAS, Aleksander Nevsky st., 50, Petrozavodsk, 185030, Russia, Efremenko N.A. ,   Northern Water Problems Institute of the Karelian Research Centre of the RAS, Aleksander Nevsky st., 50, Petrozavodsk, 185030, Russia, Belkina N.A. ,   Northern Water Problems Institute of the Karelian Research Centre of the RAS, Aleksander Nevsky st., 50, Petrozavodsk, 185030, Russia, Strahovenko V.D. ,   Northern Water Problems Institute of the Karelian Research Centre of the RAS, Aleksander Nevsky st., 50, Petrozavodsk, 185030, Russia,   V.S. Sobolev Institute of Geology and Mineralogy of the Siberian Branch of the RAS, Ac. Koptyuga ave., 3, Novosibirsk, 630090, Russia, Gatalskaya E.V. ,   Northern Water Problems Institute of the Karelian Research Centre of the RAS, Aleksander Nevsky st., 50, Petrozavodsk, 185030, Russia
Published: September 2022

Abstract. Suspended matter entering Lake Onego with river runoff was studied from 2019 to 2021. Observations on rivers in different seasons on the basis of an interdisciplinary systematic approach combining modern landscape-geographical, biogeochemical, mineralogical, geochemical, hydro-chemical, ecological methods allowed us to gain new knowledge about the weighted average flow of substances into Lake Onego for seasonal variability.
Paleohydrological events and ancient man in the valley of the Western Manych River (the Ponto-Caspian region, Russia)
Authors: Lavrentyev N.V. ,   Moscow State University, Faculty of Geography, Laboratory of Recent Deposits and Pleistocene Palaeogeography, GSP-1 Leninskie gory, Moscow, 119991, Russia
Published: September 2022

Abstract. This article discusses the interaction of ancient man and the aquatic environment in the Western Manych River Valley.
Monitoring of the polygonal reservoir of the Kytalyk reserve (Indigirka river)
Authors: Levina S.N. ,   North-Eastern Federal University, Belinskogo str., 58, Yakutsk, 677000, Russia, Pestryakova L.A. ,   North-Eastern Federal University, Belinskogo str., 58, Yakutsk, 677000, Russia, Schirrmeister  ,   Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Telegrafenberg, A45, Potsdam, 14473, Germany
Published: September 2022

Abstract. Diatom analysis is one of the methods of paleolimnological research, with the help of which it is possible to determine the state and development of aquatic ecosystems in the past and present. Assessment of the current state of reservoirs is of great importance in paleolimnology, it will allow to obtain results about temperature regime, mineralization, pH environment and water quality. The research area is a region with a lot of small polygonal reservoirs that react quickly enough to external environmental changes that are formed during the cracking of re-vein ice and may form large reservoirs in the future. In this work, the IP-1 monitoring reservoir of the Kytalyk locality was studied for 10 days (every three days) during the expedition work carried out in 2011 using standard methods and a set of field equipment. The material of the study was phytoplankton samples, as a result of which the taxonomic composition of the diatom flora was investigated and the water quality of the Kytalyk monitoring site located in the basin of the Berelyakh river, the left tributary of the Indigirka, was determined.
On the marine limit at the Kandalaksha Coast, the White Sea: new data from Lake Kanozero, a huge isolation basin in the middle course of the River Umba
Authors: Ludikova A.V. ,   Institute of Limnology of the Russian Academy of Sciences, St. Petersburg Federal Research Center of the Russian Academy of Sciences, Sevastyanova str. 9, St Petersburg, 196105, Russia, Sapelko T.V. ,   Institute of Limnology of the Russian Academy of Sciences, St. Petersburg Federal Research Center of the Russian Academy of Sciences, Sevastyanova str. 9, St Petersburg, 196105, Russia, Kuznetsov D.D. ,   Institute of Limnology of the Russian Academy of Sciences, St. Petersburg Federal Research Center of the Russian Academy of Sciences, Sevastyanova str. 9, St Petersburg, 196105, Russia
Published: September 2022

Abstract. The study revealed the evidence for the marine waters penetration into the basin of Lake Kanozero (SW part of the Kola Peninsula) in the Late Glacial. While previous studies found no signal of marine transgression above ca. 41 m a.s.l., our results suggest that the local marine limit exceeded ca. 53 m a.s.l., and the sea ingressed as far inland as ca. 50 km from the present White Sea coast.
Geochemical indicators of climate changes in Southwestern Siberia (Russia) in the Holocene sediments of Lake Itkul
Authors: Maltsev A.E. ,   Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Science, Ac. Koptyuga ave., 3, Novosibirsk, 630090, Russia, Krivonogov S.K. ,   Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Science, Ac. Koptyuga ave., 3, Novosibirsk, 630090, Russia,   Department of Geology and Geophysics, Novosibirsk State University, Pirogova str., 1, Novosibirsk, 630090, Russia, Leonova G.A. ,   Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Science, Ac. Koptyuga ave., 3, Novosibirsk, 630090, Russia, Bobrov V.A. ,   Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Science, Ac. Koptyuga ave., 3, Novosibirsk, 630090, Russia, Miroshnichenko L.V. ,   Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Science, Ac. Koptyuga ave., 3, Novosibirsk, 630090, Russia
Published: September 2022

Abstract. We present the results of study the Holocene sediments of Itkul Lake, a shal low brackish lake with carbonate sedimentation, located in the eastern part of Baraba lowland (Southwestern Siberia, Novosibirsk Region). A 1.8 m thick core of the Holocene (7.9 14C yr) sediments of Itkul Lake has been studied. Based on the geochemical and lithostratigraphic properties of the bottom sediments, we have established the following stages of the lake evolution: (I) the beginning of sedimentation, 7.8 7.0 14 ka; (II) extreme shallowing with a probable complete drying, ~7.0 5.5 14 ka; (III) rise in the water level, ~5.5 4.3 14 ka; (IV) repeated shallowing, 4.3 2.8 14 ka; and (V) subsequent watering, 2.8 0 14 ka. At present, the lake again tends to shallowing.
Cryptotephra of Lake Khorlakel (Northern Caucasus, Russia)
Authors: Mazneva E.A. ,   Institute of Geography Russian Academy of Sciences, Staromonetny lane, 29, build. 4, Moscow, 119017, Russia, Aleksandrin M.Yu. ,   Institute of Geography Russian Academy of Sciences, Staromonetny lane, 29, build. 4, Moscow, 119017, Russia, Konstantinov E.A. ,   Institute of Geography Russian Academy of Sciences, Staromonetny lane, 29, build. 4, Moscow, 119017, Russia, Ponomareva V.V. ,   Institute of Volcanology and Seismology, Far East Branch of the Russian Academy of Sciences, Piip boulevard, 9, Petropavlovsk-Kamchatsky, 683006, Russia, PortnyaginM.  ,   GEOMAR Helmholtz Center for Ocean Research Kiel, Building 4, East shore campus, Wischhofstr. 1-3, D-24148 Kiel, Germany, Borisov D.G. ,   Shirshov Institute of Oceanology of Russian Academy of Sciences, Nakhimovskiy prospect, 36, Moscow, 117997, Russia
Published: September 2022

Abstract. A tephrochronological study of the core HOR-1 of bottom sediment from Lake Khorlakel, located 24 km northwest of the Elbrus summit, was carried out. The core was 253 cm length. Deposits are represented by interbedding of thin-layered loams and bio-mineral silt. Six intervals of increased content of cryptotephra from 37,000 to 111,000 shards g dry weight 1 were identified. For a prominent peak of cryptotephra concentration in 214-215 cm, which is hardly noticeable as a whitish layer in the core, a geochemical relationship has been established with the proximal tephra of the Elbrus volcano. The age of this peak is estimated at 5950-6250 cal. yr BP.
Identification of the dynamics of carbon accumulation in the Verkh-Invenskoe peatland by the method of Loss on Ignition
Authors: Mekhonoshina E.A. ,   Perm State University, Bukireva Str., 15, Perm, 614990, Russia, Novikova E.A. ,   Perm State University, Bukireva Str., 15, Perm, 614990, Russia
Published: September 2022

Abstract. The Perm Kama region is characterized by numerous promising paleoar chives, and the paleoecological knowledge of the region is uneven. Identification of the dynamics of organic carbon accumulation in peat is included in the complex of studies used to reconstruct the state of the natural environment in the past. We have studied peat deposits of the Verkh-Invenskoe bog in the western part of the region. For this, depth measurements, sampling of a peat column, and laboratory analysis of samples throughout the thickness were performed. As a result, indicators were determined: Bulk Density (further BD), Organic Matter Bulk Density (further OMBD), Loss on Ignition (further LOI), Long term average rate of carbon accumulation (LORCA). For the first time for the western part of the Perm Kama region, numerical data on the dynamics of carbon accumulation over the last 10.9 thousand years have been obtained.
Lake Chistoye (northern Priokhotsk area, Russia) the high resolution environmental archive for the Holocene
Authors: Minyuk P.S. ,   North-East Interdisciplinary Scientific Research Institute Far East Branch Russian Academy of Sciences, 16 Portovaya St., Magadan, 685000, Russia, Pozhidaeva D.K. ,   North-East Interdisciplinary Scientific Research Institute Far East Branch Russian Academy of Sciences, 16 Portovaya St., Magadan, 685000, Russia, Burnatny S.S. ,   North-East Interdisciplinary Scientific Research Institute Far East Branch Russian Academy of Sciences, 16 Portovaya St., Magadan, 685000, Russia
Published: September 2022

Abstract. Lake Chistoye in northeastern Russia provides one of the longest sequences of the Holocene sediments. Bottom surface and core sediments were analyzed using the complex method including rock magnetic, paleomagnetic, geochemical, mineralogical and radiocarbon dating. Two layers tephra with distinct individual petrophysical, geochemical and mineralogical characteristi were distinguished in the sediments. High-resolution secular variations of the geomagnetic field were constructed from the cores. According to radiocarbon dates, the lake was formed since the beginning of the Early Holocene. Synchronously, near the lake began an accumulation of marsh peats.
Paleoclimatic conditions of a Late Pleistocene mega-lake in Kamchatka
Authors: Mukhametshina E.O. ,   Institute of Geography, Russian Academy of Sciences, Staromonetny lane 29, bld 4, Moscow, 119017, Russia, Zelenin E.A. ,   Geological Institute, Russian Academy of Sciences, Pyzhevsky lane 7, bld. 1. Moscow 119017, Russia, Pendea I.F. ,   Lakehead University Orillia, 500 University Avenue, Orillia, ON, L3V 0B9, Canada
Published: September 2022

Abstract. Here we present the pollen spectra of the Central Kamchatka depression from 28.4 to 7.9 ka. Our study is based on a key lacustrine section Kamplen that deposited in a Late Pleistocene mega-lake and thus represents an integral peninsula-scale record. Pollen analysis allows us to identify seven local pollen zones reflecting the main stages of vegetation and climate change.
Diatoms of the Aleutian Islands (Alaska, USA) in the Holocene
Authors: Neplyukhina A.A. ,   A.N. Severtsov Institute of Ecology and Evolution RAS, 33 Leninsky Prospect, Moscow, 119071, Russia
Published: September 2022

Abstract. Here presented a short overview of paleoreconstruction works started since 2018 for the Aleutian Islands region. Material is from four Aleutian Islands that represented by peat deposits and modern waterbodies samples are studied. Modern and fossil diatom communities of these islands are described, diatom analyses and paleoreconstructions are performed.
Sedimentological records of atastrophic mass movements in the lake bottom-sediments of north-western Kola Peninsula and possible scenarios to explain the seismogenic trigger
Authors: Nikolaeva S. ,   Geological Institute of Kola Science Center Russian Academy of Science (GI KSC RAS), 14 Fersman Str., Apatity, 184209, Russia, Tolstobrov D. ,   Geological Institute of Kola Science Center Russian Academy of Science (GI KSC RAS), 14 Fersman Str., Apatity, 184209, Russia
Published: September 2022

Abstract. In this present article, we describe disturbances in the sedimentary records of lakes on the western flank of Lake Imandra (NE Fennoscandia, Kola Peninsula). The research framework comprises sedimentological and textural criteria for a visual description of sedimentary structures, borehole drilling data, chronological (radiocarbon dating) data, and ground-penetrating radar (GPR) data. Synchronicity specific features and fast spontaneous sediment accumulation in lakes, as well as traces of strong prehistoric and historical earthquakes and geomorphic setting in the studied area suggest that the observed mass movements in lake sediments are potentially generated by earthquake shaking.
Composition of the terrigenous component in the bottom sediments of the Lake Onego different areas
Authors: Ovdina .. ,   Sobolev Institute of Geology and Mineralogy Siberian Branch of the Russian Academy of Sciences (IGM SB RAS), 3 Akad. Koptyug Ave., Novosibirsk, 630090, Russia, Strakhovenko V.D. ,   Sobolev Institute of Geology and Mineralogy Siberian Branch of the Russian Academy of Sciences (IGM SB RAS), 3 Akad. Koptyug Ave., Novosibirsk, 630090, Russia, Malov V.I. ,   Sobolev Institute of Geology and Mineralogy Siberian Branch of the Russian Academy of Sciences (IGM SB RAS), 3 Akad. Koptyug Ave., Novosibirsk, 630090, Russia
Published: September 2022

Abstract. This article touches upon the terrigenous component of the Lake Onego bottom sediments. The terrigenous component represented by quartz, feldspar, and muscovite is spread throughout the lake s water area and corresponds to the composition of the parent rocks of the lake s catchment area. Dark-colored minerals (amphiboles, pyroxene, epidote, etc.) are unevenly distributed, and reflect local sources of terrigenous material in some bays and areas of the lake (Petrozavodsk Bay, Central Onego, South Onego). In the areas of Big and Small Onego, Povenetsky and Zaonezhsky Bays, local sources of terrigenous material are not found in the upper horizons of the bottom sediments.