The article examines the applicability and functioning of artificial soils, whose creation is based both on research into modeling moisture and salt transfer in soils and on the development of nature-like biogeochemical technologies for recreating natural biogeochemical cyclicity. Two main technological approaches for constructing artificial soils are demonstrated, namely: modeling soil processes and applying the modeling results to technologies for creating functional horizons of artificial soils. It is noted that artificial soils are essentially biophysical models, our consideration of which allows for the design of such soils for a wide variety of functional uses.

A new multi-level model for calculating the carbon footprint of agroecosystem products is proposed. The concept of “final carbon footprint” is introduced, which includes both direct CO₂ emissions from the operation of tractors, combines, oxidation of soil humus, CO₂-eq. during the transformation of nitrogen fertilizers in the soil, and indirect CO₂ emissions – carbon dioxide release into the atmosphere during the production of tractors, combines, tillage equipment, mineral fertilizers etc.
Based on the results of field experiments on gray forest soils in the Southern Moscow region, it is shown that when applying average doses of mineral fertilizers to field crops, the indirect CO₂ emissions are comparable to the CO₂ input from organic fuel oxidation when machinery is operating in the field. At higher doses of fertilizers, the indirect emissions are significantly greater than the CO₂ emissions from machinery operation. In order of increasing CO₂ emissions per 1 ha of sowing, crops on gray forest soils are arranged as follows: corn for silage > barley > winter wheat > clover.
Clover is a carbon-negative crop (−1.7 t/ha CO₂), i.e., CO₂ sequestration in the soil exceeds all CO₂ emissions from hay crop production. The final carbon footprint for grain crops, calculated using the standard method, was as follows: for winter wheat (with a fertilizer dose of N40P40K40) – 116 kg CO₂ per 1 centner of grain, for barley (with a dose of N60P40K40) – 104 kg CO₂ per 1 centner of grain. The final carbon footprint, taking into account the aftereffects of predecessors, was: for winter wheat (predecessor: two-year clover) – 48 kg CO₂ per 1 centner of grain; for barley (predecessor: silage corn) – 113 kg CO₂ per 1 centner of grain.

This paper examines the hierarchical organization of principles in soil science, emphasizing their continuity with classical positions from various scientific fields and their role in integrating theory and practice. The study highlights differences in the genesis of principles, ranging from theoretical generalizations to experimentally validated propositions. Special attention is given to ideas of V.I. Vernadsky and V.V. Dokuchaev, who laid the foundations for the systemic and evolutionary-historical approaches to soil study. It is demonstrated that the scientific worldview serves as the pinnacle of this hierarchy, defining a system of generalizations, including the principles of systemicity, historicism, and the primacy of scientific approaches formulated by Academician G.V. Dobrovolsky. These principles ensure unity between theoretical and applied directions, rooted in the classical supra-conceptual ideas by V.V. Dokuchaev, whose works underpin the genetic approach to soil study. Within the hierarchy, following the scientific worldview come methodological principles neutral to specific disciplinary sections, followed by concepts, laws, and principles. For instance, N.M. Sibirtsev’s genetic principle, formulated in the 19th century, continues to define approaches to soil genesis. The paper underscores the importance of continuity, showing that Dokuchaev’s principles of systemicity and historicism remain fundamental for developing new scientific leads. The hierarchical organization of principles and their intra- and interdisciplinary continuity serve as key instruments for the progress in soil science, enabling integration of diverse knowledge into a unified scientific field. The necessity for further systematization of principles, particularly in biogeochemical cycles and interdisciplinary research, and terminology harmonization to strengthen the link between theory and practice is also emphasized.

In this paper, we discuss questions of the common origin of the disciplines of soil science and landscape geochemistry. Their closeness lies in their common objects of study — soils and landscapes — and a common methodological approach based on systemic analysis, the evolutionary-historical principle, and the priority of the scientific approach in solving practical problems, as laid down by V.V. Dokuchaev. The prominent naturalists A.E. Fersman and V.I. Vernadsky emphasized the genetic connection and mutual enrichment of these sciences through theoretical concepts and experimental data. When considering common problems of these two disciplines, particular importance is given to the biological cycle as a fundamental law governing the functioning of ecosystems. In the classification of soils and soil-geochemical catenae, their position within the system of geographic landscapes is especially significant. Currently, priority issues include anthropogenic impacts and environmental monitoring, which involve studies of element migration over the biosphere, as well as efforts towards mathematical modeling.

The article tells about the life and scientific achievements of this scientist. The major stages of S.S. Neustruev’s work are given: a theorist of soil science from Dokuchaev’s school, a famous geologist and one of the most talented physical geographers. His unique capacities for synthesis, a special ceaseless role of soil-geographical, cadastral and geological researches conducted by him are shown. S.S. Neustruev’s scientific views about the joint development of geomorphology and soil, their interconnections have developed approaches to develop regional Russian and global soil classifications and to study ecological and biosphere soil functions. New facts of his life and scientific activity are presented. He was a Russian soil scientist, geographer, naturalist, graduate from Moscow University, researcher of Central Asia, the South-East of the Russian Plain, and the Volga region. Being professor of the Geographical Institute in Petrograd (1918), he headed the first department of soil geography in Russia. He was the first to introduce the term “serozem” and establish the serozem type of soil formation in deserts and semi-deserts, and developed a classification of soils for a number of regions of Central Asia. He was Head of the Commission on Soil Genesis of the First All-Union Congress of Soil Scientists; Participant of the 1st International Congress of Soil Scientists in the USA (1927); Corresponding member of the Agricultural Academy (Czech Republic).

The fulfillment of the tasks set by the 1949-1965 State Plan for Nature Transformation became the work of the whole country. Its goal was the development of sustainable agriculture in the steppe and forest–steppe regions of the European part of the USSR. It is an example of a responsible state attitude to the use and preservation of our lands and soil fertility. The State Plan for nature transformation was bases on the integrated reclamation of agricultural landscapes using a scientific systematic approach to the objects of research and management. State authorities, Academy of Sciences of the USSR, scientists from dozens of universities and research institutes, ministries, 80 thousand collective farms, 2 thousand state farms, and 3 thousand machine tractor stations took an active part in the organization and large-scale implementation of protective afforestation and the development of a grass-field farming system. The plan provided for the creation of 8 large state forest strips with a total length of 5,320 km, located along floodplains and watersheds of the Volga, Dnieper, Don, Ural, Seversky Donets rivers etc.; protective forest plantations in the fields of collective farms and state farms; consolidation and afforestation of sands on an area of 322 thousand ha; the introduction and development of a system of field and fodder grass-field crop rotations; and the creation of over 44 thousand ponds and reservoirs. Over the 5 years of the plan's implementation, more than 2.3 million ha of forest plantations have been planted in the country; an ecological framework of agricultural landscapes has been created on agricultural lands; over 13 thousand ponds and reservoirs have been created. The prototype of the scientific basis of the State Plan for Nature Transformation was the works by V. V. Dokuchaev, V. R. Williams and V. I. Vernadsky on the conservation of land and soil fertility. The implementation of the plan stopped in 1953 and the development of virgin and fallow lands began. Currently, the state, scientists, society, regions and agricultural producers need combining their efforts in the rational usage of natural resources, the preservation of agricultural land and soil fertility for the present and future generations.

The article shows that each period of the evolutionary process of the biosphere formation on Earth corresponds to one form of soil formation, namely: underwater (“hydrozemic”), swampy (“atmozemic”), and terrestrial (“lithozemic”). The ancient swamp soil formation is considered, in addition to biomass deposition, to take part in the formation of the oxygen-containing composition of the planet’s gaseous envelope and the release of organisms from the aquatic environment to land. It has been determined that the process of paludification and swamp soils in the past and at present did and do perform the same biospheric functions and should include the entire genetic profile up to the basal rock in the concept of “peat soil”. On the example of the central part of Western Siberia, the process of paludification in the Holocene period is considered. This process is defined as a single, irreversible, progressive process of conjugated changes in their biotic and abiotic components. This ensures autonomy in the development and preservation of mires as a special type of the biogeocenotic cover of Earth. It is shown that the differences in the mire complexes of different botanico–geographical zones and subzones reveal the chronological boundaries of the transformation of swamp biogeocenoses of eutrophic types into mesotrophic and oligotrophic ones. It has been determined that the process of paludification in the taiga zone of the West Siberian Plain is of aggressive nature and the expected warming is a temporary warm period in the interval of cyclical climate.

The article presents the model of a new approach to solving environmental prob-lems, namely, a scheme for the transformation of soil energy in the material and spiritual spheres of society. The activation of mass creativity and the theme of harvest in art will contribute to the formation of environmental consciousness for human survival on Earth.

The preservation and in situ museumification of archaeological objects of stratigraphic sections of cultural layer soils, whose value depends on the integrity and intactness, is a complex and underdeveloped problem. This is due to some specific properties of these soils, such as the heterogeneity of soil composition both vertically and horizontally; the diversity of inclusions, the uneven compressibility of the strata, the ability to self-compact from their weight, changes in hydrogeological conditions, soil soaking and the decomposition of organic inclusions. As a result, these soils are the most unfavorable in artificial stabilization. In the study, a wide range of soils of the cultural layer from various places with stabilization plans were examined. Our analysis of the deposits made it possible to separate these soils by geochemical features which have the highest impact on the intensity of the chemical solution’s interaction processes with the mineral component of the soil.
This chemical solution is in a family of silicate compositions with surfactants of the amide class. These organic liquid glass hardeners activate the skeletal part of the soil and provide the complete mobilization of the main cementing substance (silica gel). Pilot tests of various modifications of organo-silicate solutions were carried out at the sites of Chersonesos (Sevastopol), Tanais (Rostov region), Moscow, etc. The soils ranged from sandy to loamy with various inclusions (building stone, ceramics, bones, fish scales, shells, ash, soot, plant roots, etc.). Soil stabilization was carried out by injecting chemical solutions of various densities with the use of vertical and horizontal injections. An important finding of the work was that forming a new soil mass with improved properties was determined by the composition, properties of the soil and injection solutions, the distance from the injector and the depth of the stabilized area.
For the first time in Russia, at the center of Moscow, it was possible to preserve the soil mass in situ of the cultural layer of the 16–17^th centuries and exhibit it for 32 years to visitors in the underground archaeological museum.

The role of scientific mentorship is analyzed using the example of the relationship between outstanding Russian scientists N.V. Timofeyev-Ressovsky (1900–1981) and A.N. Tyuryukanov (1931–2001). The relationship between these remarkable individuals, though very different in origin, character, and habits, quickly evolved from teacher–student into genuine friendship and scientific collaboration. Two decades of fruitful interaction between them lent impetus to the development of new scientific fields, namely, radiation biogeocenology, biospheric studies (biospherology), and fundamental soil science. Their dedication to science and their attitude toward young people enabled future generations of scientists to grow and develop within the Russian school of natural science.

September 2025 marked the 110th anniversary of the birth of Academician, soil scientist and ecologist Gleb V. Dobrovol’sky. His research was not limited to the natural sciences. A significant part of his activity was scientific and educational work within the Scientific Council of the Russian Academy of Sciences for the Study and Protection of Cultural and Natural Heritage. From 1998 to 2013, he served as co-chair of the Council and led its natural heritage research. During this period, soil scientists were actively involved in the Council's work: seminars and conferences were organized, articles and monographs were published, and dissertations on soils and society were defended. But most importantly, it supported the research of scientists in line with the principles of natural-cultural synthesis. The approaches pioneered by G.V. Dobrovolsky further advanced the field of soils and society. This article examines the main areas of work of the Scientific Council of the Russian Academy of Sciences and its major achievements.

The life and work of Professor Igor L. Vasilyev (1940–2019) is an illustrative example of the versatility of a? university geologist. As a native of Tambov City and a graduate from the renowned Saratov Higher Geological School during its peak (1950s–1960s), Professor Vasilyev spent the majority of his life working in Transbaikalia (Buryatia), researching Paleozoic and Proterozoic deposits in areas of hydrothermal ore genesis. Here, he put forward an original interdisciplinary concept of coevolution of synchronously developing volcanic systems and reef structures in the coastal zone of a marine basin with an output to ore formation. He worked as a researcher, a practical geologist, a teacher, and an organizer of the scientific and educational process. In the 1990s, after returning to his native Tambov City, Professor I.L. Vasilyev taught the course of engineering geology at The Technical University and actively engaged in museum work, organizing field trips and creating a set of educational collections, followed by the initial museum exhibition in the format of a geological cabinet. Currently, the museum cluster he established is being developed within the scientific and educational center “Coevolution of Geospheres Museum” of Tambov State Technical University.

The article examines the collaboration between the Earth Science Museum and professors from the Faculty of Biology and the Faculty of Soil Science at Lomonosov Moscow State University (Faculty of Biology and Soil Science until 1973) from the museum’s founding to the present day. In the early 1950s, university professors collaborated with the museum staff to create biology-themed exhibits at the Museum. In particular, they helped preparing the exhibits on the 26th floor (Marine Hall) and the 25th floor (Natural Zonation). A brief overview of the current course offerings in biological disciplines at the Earth Science Museum is presented, including courses for students from the Faculty of Biology, the Faculty of Geology, and the Faculty of Philology at Moscow State University. The disciplines covered include “Ecology”, “Marine Communities and Ecosystems”, “Ecology with Fundamentals of Biogeography”, and “Modern Natural Sciences”. The museum’s exhibition serves as a unique educational environment for such classes, particularly when incorporating modern pedagogical approaches such as the flipped classroom model. The article presents the collaborative work of the Museum’s staff and students from the Faculty of Biology within the framework of the MSU’s Development Program “Development of the Foundations for the Establishing, Operating, and Advancing a Comprehensive University-based Scientific and Educational Youth Museum Using the Example of Lomonosov Moscow State University.” It also highlights the creation of a unique interdisciplinary open-air exhibition at the MSU Botanical Garden on Leninskie gory named “From the Arctic to Moscow: The Path of Glaciers”.

Vinogradsky’s columns are known as a model of a microbial community for experiments in laboratory conditions. The article proposes a system of integrated use of Vinogradsky’s columns in the space of the Earth Science Museum as: a) a visual dynamic “living exhibit”, b) an interactive platform of the Youth Museum, and a mobile cluster for exhibitions and the Science Festival, c) a natural educational and methodological tool, and d) a laboratory naturalistic experimental setup. Making a series of Vinogradsky’s columns from different locations of the initial pedo-soil matrix of various compositions allows for a successful combination of scientific, experimental, educational, and demonstration-interactive tasks in the space of a natural science university museum. In the Earth Science Museum at Moscow State University (Hall 21 – East European Plain), a series of Vinogradsky’s columns has been developed, based initially on the materials of bottom sediments samples of pond reservoirs, selected by a team of novice nature explorers (students of Moscow State University and schoolchildren) as part of the project “Youth Museum” of Moscow State University. Two-year monitoring has allowed to obtain new data on the development of microbial communities and to arrange an original cluster in the hall and to present a series of columns at the All-Russian Science Festival.

This study establishes the authorship of the geological term “eluvium” and traces its evolution in geological and soil sciences. It confirms the priority of H. Trautschold (1817–1902) as the original author of this term, supported by analysis of his works from the 1870s. The term was first introduced by him in 1872. The article demonstrates that the modern interpretation of the term “eluvium” shows a high degree of correlation with H. Trautschold’s classical definition. The development of the concept of eluvium and ideas about eluvial processes is traced through the works of prominent Russian soil scientists – N.M. Sibirtsev, V.V. Dokuchaev, V.I. Vernadsky, B.B. Polynov, V.R. Williams, and N.P. Remezov. V.V. Dokuchaev systematized the concept of eluvium into a coherent framework: definition of eluvium → eluvial processes → stages and phases of eluvial rock transformations. He emphasized that “although these products are sometimes altered beyond recognition of the parent rock which they originated from, a genetic connection between them always persists.” Particular significance lies in the incorporation of the biogeochemical aspect into the concept of eluvium through the works of N.P. Remezov, who established biological accumulation of elements exceeding their removal during eluvial processes. This allowed eluvium formation to be viewed not as a purely abiotic process but as a phenomenon involving living organisms. The article reveals the historical continuity of scientific ideas in the hypothesis of the origin of the Russian Plain: H. Trautschold → V.V. Dokuchaev → B.B. Polynov → V.A. Kovda. H. Trautschold was the first to propose that the Russian Plain formed from deposits lying on top, which were influenced for millennia by atmospheric precipitation, initiating the concept of eluvial origin of plains. This idea was later reflected in the works of V.V. Dokuchaev and B.B. Polynov, and subsequently in V.A. Kovda’s hypothesis regarding the fluvioglacial origin of the Russian Plain. Our analysis confirms that the term “eluvium” is a fundamental concept uniting geology, geomorphology, geochemistry, and soil science, and its evolution reflects the advancement of understanding regarding the genesis of surface deposits and soils.

Based on our previously performed calculations of the intensity of Earth’ irradiation at the top of the atmosphere with high spatial and temporal resolution, it has been confirmed that the sea level rise over at least the last 130,000 years (during the Eemian / Mikulino interglacial and the late Pleistocene – Holocene) is associated with warm phases of climate precession. Based on our calculations of summer/winter irradiation intensity extremes during climate precession phases in the Northern Hemisphere, the formation dates of dropstones (Heinrich layers ) have been refined. These dropstones are correlated with climate precession extremes and are recorded in ocean sediments during both interglacial and glacial periods. Sea level evolution and ocean sedimentation over the past 130,000 years are primarily determined by glacioeustatic fluctuations associated with temperature changes, which are primarily controlled by variations in the intensity of Northern Hemisphere irradiation within the climatic precession cycle. At the same time, the weak presence of a precessional cycle is noted in the benthic δ18 O stack of the orbitally tuned LR04 scheme/model, which currently forms the basis of geochronology and climatostratigraphy of Late Pleistocene and Holocene. The beginning of the next warm phase of climate precession is expected around 5,500 years AD. This phase will peak around 11.5 kyr AD, when the next significant sea level rise is expected.

Brief information is given about several Russian microbiologists--naturalists whose names are found on the pages of V.I. Vernadsky’s diaries. Despite the variety of topics, their works always found hot reaction of V.I. Vernadsky. The knowledge of these materials helps one to understand the evolution of the scientists’ ideas, trends of the development of science.

At the end of the 1960s a movement began for the preservation of Earth's biosphere — the common home for humanity and the receptacle of all life on Earth. This movement united the scientific communities of various countries for many years. 20 years later, at the International Symposium “Biosphere and Humanity. History and Modernity” the development and promotion of the ideas of Academician V.I. Vernadsky, the founder of the Earth’s Biosphere doctrine, were summed up.

For the first time in the research literature, the paper highlights the cooperation of the outstanding Russian investigators G.N. Potanin (1835–1920) and V.I. Vernadsky (1863–1945). The basis of interaction between these scientists was determined by the fact that both of them were students of Natural Department of the Faculty of Physics and Mathematics of Imperial St. Petersburg University. They carried the knowledge and interest in research gained at the university throughout their lives. Based on authentic sources, the authors revealed the role of A.A. Inostrantsev (1843–1919) as the organizer and ruler of the geological cabinet (museum) at St. Petersburg University, where G.N. Potanin acquired the necessary knowledge for his scientific expeditions to Central Asia in 1874. Under the influence of Dr. Inostrantsev, Potanin realized the importance of museums in geology and other branches. Besides, he supported V.V. Dokuchaev (1846–1903) in conducting soil science research in Russia. The paper emphasizes the participation of the university student Vladimir Vernadsky in Prof. Dokuchaev’s expeditions and in the preparation of a soil exposition at the World Exhibition in Paris in 1889. Following in the footsteps of his teachers and mentors, V.I. Vernadsky joined the museum science, became the curator of the Mineralogical Museum in Alma Mater, and then, some years later, in the Imperial Moscow University.

Immediate communication between V.I. Vernadsky and G.N. Potanin occurred in the 1890s – 1900s, when they participated in discussions on ideological and political reorganization of Russia, pondered on the problems of regional self-government in the country. As a brief conclusion from this publication, the authors postulate free thought and scientific creativity, which related to Vernadsky and Potanin, as relevant ideas of our days.

The paper is devoted to the influence of outstanding Russian scientists Dmitri Ivanovich Mendeleyev and Vasily Vasilyevich Dokuchaev on the formation of the views of their brilliant student Vladimir Ivanovich Vernadsky, his formation as a great Russian thinker and naturalist on a planetary scale, as well as their further creative interaction.

The paper considers the use of two pedagogical approaches, person-centered and systemic-structural, in the development and implementation of two thematic museum classes dedicated to V.I. Vernadsky’s life and scientific activities. These classes, namely, “From the soil to the biosphere” and “V.I. Vernadsky’s life and scientific activity”, were developed at the Earth Science Museum of the Lomonosov Moscow State University and aimed at in-depth acquaintance of schoolchildren with the teaching about the biosphere. The paper presents methodological materials for the classes: a description of the stages of the lessons and tasks for independent work (a crossword and a quest). Our analysis of the second lesson’s approbation showed that the schoolchildren were unanimous in their opinion: the organization of an independent search for answers to the posed questions and the leading role of the museum teacher allowed them to better accepting complex concepts and understanding the relationship of various scientific directions.

The paper is devoted to the outstanding Russian scientist Vladimir I. Vernadsky, who is one of the founders of ecology. As a student of V.V. Dokuchaev, he developed his teacher’s ideas of a systematic dynamic approach to the study of nature and introduced a deep scientific ecological content into the concepts of the biosphere and the noösphere. V.I. Vernadsky is the founder of a complex of modern Earth sciences (geochemistry, biogeochemistry, radiology, and hydrogeology) and the creator of many scientific schools. In his scientific work, he covered many research areas, from geology to the study of the role of living matter in geochemical cycles, from soil science to the biosphere, the increasing influence of scientific thought, human activity in the biosphere and its transformation into the noösphere. The importance of agriculture in the biosphere and the noösphere is considered. The biosphere is an area of active life on Earth (troposphere, hydrosphere and part of the lithosphere), the composition, structure and energy of which are mainly due to the activity of living organisms. The noösphere is its thinking shell. Agriculture, whose most important part are grassland ecosystems, is an important component of the biosphere, being a reproducible, autotrophic sustainable resource (energetical, environmental, food and feed). In light of the pressing environmental problems facing the world, environmental education and environmental thinking are a priority for the development of the biosphere, the noösphere and agriculture.

At present, it is possible to identify a number of new directions for the development of biogeochemical research, at the junction of fundamental and applied studies. A novel field of research is being formed, namely, engineering biogeochemistry, within the framework of which innovative biogeochemical technologies and technological processes based on modeling and management of ecosystematic biogeochemical cycles are being developed. The application of these innovative technologies for the restoration of disturbed and polluted impact ecosystems, in particular, polar ecosystems in the zones of operation of gas-producing enterprises, is considered. Technological examples of calculations of geoecological risks, as well as microbial contamination risks are given. A pool of the developed biogeochemical technologies and their connection with other innovative technologies within the framework of gas-producing companies is shown.

Based on V.I. Vernadsky’s teaching of the biosphere and modern scientific data, an attempt was made to analyze the mechanisms of the dynamics of modern global processes using the example of climate changes. Possible causes of the warming, both natural and anthropogenic, observed in the last century are considered. It is shown that it is the increase in temperature that causes the increase in the concentrations of carbon dioxide and methane in the atmosphere, and not vice versa, as follows from the greenhouse effect hypothesis. This seems to be the main cause for the low effectiveness of any international efforts to stabilize the climate. The course of natural processes, as well as the evolution of the biosphere as a whole, has an unstable, cyclical nature, running according to its own laws. Particular attention is paid to V.I. Vernadsky’s doctrine of the biosphere, his views on the role of reason and scientific research in solving problems inevitably arisen in the course of evolution on Earth, caused by the rapidly developing, from a historical standpoint, humanity. Scientific research is a reliable defender of both the interests of mankind and the biosphere as a whole. This was V.I. Vernadsky’s basis of his positive outlook on the future of our civilization and the biosphere.

The constantly extending list of humankind-produced environmentally toxic compounds currently includes pharmacological preparations. Among them, of potential relevance are neurotransmitters including such biogenic amines as norepinephrine, dopamine, serotonin, and histamine, as well as acetylcholine. These neurotransmitters were tested in the present work using such model organisms as the green microalgae Chlorella vulgaris Beijer, Scenedesmus quadricauda (Turp.) Breb. К-1149, and Haematococcus lacustris (= pluvialis) strains IPPAS H-239 and BM-1, as well as the cyanobacterium Limnospira platensis IPPAS B-256. It was established that all tested neurotransmitters significantly stimulate the growth of the cultures of microalgae at sufficiently low (micromolar) concentrations. In light of the results of this work, uncontrollable microalgal growth seems to be possible under the influence of trace amounts of neurotransmitters in natural and artificial water bodies, which might cause their eutrophication. All tested substances influenced the photosynthetic pigment content at micromolar (or submicromolar) concentrations, acetylcholine being a quasi-universal promoter of their biosynthesis that presumably stimulates the photosynthetic activity of the microalgae. The effects of the other tested substances varied depending on the microalgal species involved but predominantly resulted in promoting photosynthetic pigment biosynthesis. A biotechnological project aimed at stimulating the microalgal biomass yield by supplementing microalgal cultures with neurotransmitters seems to hold promise for producing drugs, food additives, or biofuel.

Of fundamental and priority applied importance are new scientific and practical results obtained at the V.R. Williams Federal Research Center of Forage Production & Agroecology for the study of natural food resources in Russia, based on modern knowledge, materials and technologies. For all 11 natural and economic regions of Russia (Northern, Northwestern, Volga-Vyatka, Central, Central Chernozem, Volga, North Caucasian, Ural, West Siberian, East Siberian, and Far Eastern), agro-landscape and ecological zoning of land and forage ecosystems has been developed. The following materials were obtained for each area: a map M 1:2,500,000, a legend, a database on land, a database on forage lands, a database on negative processes, a classification of forage lands, a classification of deer pastures (where available), recommendations for forage production and environmental management in agriculture. The research used the Map of the Soil and Ecological Zoning of Russia from the Faculty of Soil Science of Lomonosov Moscow State University, as well as other numerous sources. When creating and developing new highly productive and resistant plant varieties and nature-like technologies based on zoning, science and industry will be able to use local natural and climatic resources with the greatest efficiency and minimize the development of negative processes.

The international situation affects a wide variety of aspects of our life, including museum exhibitions. The closer the ties between countries, the more relevant exhibits can be seen in the display cases. Of the BRICS member countries, China is best represented at the Earth Science Museum of Moscow State University. There are numerous and diverse samples of rocks and minerals, fossils, soil monoliths and herbaria. Joint geological work is also reflected in the collections of rocks and ores from Iran and India. Until now, the museum has been maintaining only private relations with the rest of the BRICS member countries, thanks to which it has collections of butterflies, herbaria and individual samples of rocks and minerals. Nevertheless, the museum features the most distinctive exhibits from most of these countries.

During ten field seasons, in the format of the scientific and educational expedition “Flotilla of Floating Universities”, whose concept is based on the synthesis of science and art, many researches and educational, volunteer and publishing projects and events have been implemented in the Volga region, the Caspian region, the Don region and the Urals. The research areas of the tenth field season in 2024 (Samara–Saratov Volga region) focused on: a) stratigraphic and astrochronological analysis of sections of Upper Cretaceous and Paleogene sediments, b) studying the role of living matter in the evolution of geoecosystems with special attention to biosimilar bodies (paleosoils, hardgrounds), c) analyzing the distribution of cosmic matter in natural environments in the zone of the “Saratov meteor shower” in 1918, and d) the history of the Great academic expeditions in the 18th century (the Volga routes of I.I. Lepekhin, P.S. Pallas, and I.P. Falk). The key scientific and educational projects were a field meeting of the RAS Commission for the Study of the Heritage of Outstanding Scientists (V.I. Vernadsky section) and a field session of the Moscow Society of Naturalists (MOIP) on the Volsk–Saratov section of the expedition’s main route.

Wastewater treatment plants (WWTPs) serve as hubs for the redistribution of biogenic element flows, since they generate three output streams (liquid, solid and gaseous), where the proportional content of biogenic elements depends on the wastewater treatment technology. The circular economy principles require accounting for these flows to develop a strategy for utilizing biogenic elements to meet the needs of the growing urban population. Identifying sewerage basins within a river basin serves as a tool for calculating these flows. The maximum possible amount of biogenic elements (carbon, nitrogen, phosphorus) redirected by treatment plants to local water bodies, to the atmosphere, and to sewage sludge is estimated for each sewerage basin. Such calculations enable an assessment of the maximum biogenic load downstream of the treatment plant discharge point (in the event of a plant shutdown) and the design of potential technological chains for utilizing sewage sludge. The author proposes to use a GIS-based method to identify sewerage basins within a river basin. This approach allows for the calculation of maximum biogenic element flows based on the population within each sewerage basin, providing insights into the environmental load on each individual basin and the entire river basin as a whole. Additionally, this method identifies zones with the highest load on watercourses within the river basin and assesses the risks of watercourse pollution due to urban development and the emergence of new residential areas. The article presents a methodology for identifying sewerage basins within the Moscow River basin, calculating the population within their boundaries, and estimating the daily load of two indicators, namely: total nitrogen and phosphate phosphorus. Using geoinformation tools, a map of sewerage basins was plotted, identifying areas within the Moscow River basin with the highest and lowest coverage of wastewater treatment plants.

Due to the large volume of coal mining in the Russian Federation and other countries, there is a serious issue of the formation of waste heaps from coal dumps, which pose a significant threat to the environment of adjacent territories. One of such areas is the Donetsk coal basin, whose area is more than 60 thousand km2. Phytoreclamation is the most common and cost-effective method recommended for the restoration of degraded coal dump soil, which reduces the removal of toxic substances with dust emissions and water runoff. However, plant growth on these soils is hindered by their phytotoxicity and unfavorable physical and physicochemical properties. The aim of this research was to develop a biogeochemical technology for the reclamation of coal dumps in Donbas based on phytoreclamation with various additives. Our experiments involved soil samples taken from the upper layer of the Ayutinskaya mine waste heap in the Donetsk coal basin, as well as zonal ordinary chernozem samples. The experiments were conducted in microfield conditions in bottomless vessels with an area of 0.1 m2 dug into the ground. The additives used were wood biochar and other sorbents, including mineral (diatomite and vermiculite) and organic (acidic and neutralized peat) ones, as well as ordinary chernozem and quarry sand – clean and with biohumus additives. The soil was seeded with a drought-resistant lawn mixture. All additives had a positive effect on the growth of green mass of drought-resistant lawn, measured during 3 cuttings ib the vegetation season of 2024. However, the best results were obtained with the addition of neutralized peat and chernozem at doses of 25 %, as well as quarry sand at doses of 25 and 50 % with the addition of biohumus; at the same time, the additional addition of 5 % biochar to all these samples gave no desired result.

Expedition work is an important aspect of the activities of any natural science university museum, starting directly from its formation as a scientific, educational and enlightening center. As the museum structure develops, the role of such expeditions is transformed, acquiring the character of an evolutionarily necessary structural and functional mechanism. In the 75-year history of the Earth Science Museum of MSU, three main stages of expeditionary activity are distinguished. The first one is associated with the formation of the Museum in the 1950–60s and reflects, as the main task, the formation of an array of naturalia (natural objects), as well as photographic materials and works of art, which formed the basis of the exposition and collection base. The second stage is marked by targeted expeditions for specific local exhibition and research tasks, involving field collection of natural facts. At the third stage in the 21st century, the functional spectrum of the Museum’s expeditionary activities is expanding: field work, in addition to the traditional mechanism of new acquisitions, becomes an arena for positioning the Museum for the general public outside its classical space, an interactive cluster of education and popularization of science, involving various social groups in the area of the expedition’s work in museum co-creation. The Museum’s expeditions are widely reflected in popular science films and books, at “Science Festivals”, in the media space and blogosphere. These innovations have been testing in recent years in the mode of the scientific and educational expedition “Floating Universities Flotilla” in the Volga region, which has become an important resource for the implementation of the concept of a mobile network museum, as well as the formation of a youth museum as a promising interdisciplinary project of the Earth Science Museum of Moscow State University.

In development of fundamental ideas of the MSU professors V.I. Vernadsky, V.A. Kov­da and M.A. Glazovskaya in the field of the biosphere and its biogeochemical organization, the use of biogeochemical standards for parameterization of the technogenic impact on various ecosystems is proposed. To assess these standards quantitatively, the application of the critical loads methodology is shown. Algorithms to calculate the values of critical loads are proposed, in particular, for acid-forming and eutrophicating sulfur and nitrogen compounds emitted during the operation of various industries, including the oil and gas one. Using the example of the impact zone of the Central Asia–Center main gas pipeline planned for reconstruction, the maps of critical loads are presented and an assessment of the environmental risk in the coastal zone of the Caspian Sea is given.

The article discusses the applicability of the Industry 4.0 concept to agriculture in general and fertilizer usage in particular. The possibilities of integrating IT and communication technologies with agricultural production are shown, when “smart” network systems combining various types of data from several sources help to increase productivity and efficiency. Examples are given of increasing the efficiency of fertilizer usage, primarily nitrogen ones, using electronic twins of agronomic and agrochemical technologies to reduce their environmental impacts. It is noted that the introduction of Industry 4.0 technologies increases the efficiency of precision farming as a combination of the best practices of sustainable agriculture (BPSA). Examples of assessing the life cycle of fertilizers considering the risk of eutrophication of natural waters are given. This allows achieving economic and environmental optimization of agriculture.

The key principle of the Arctic development should be nature-saving nature management. The agro-landscape-ecological zoning of the Far North fodder ecosystems developed at the V.R. Williams Federal Research Centre for Forage Production and Agroecology is aimed at this very goal. About 90 % of Murmansk District is occupied by reindeer pastures, in some places disturbed as a result of their irrational use by reindeer herders, mining, construction, and transport; the ecological state of the territory is tense. In Yamal District, reindeer pastures occupy 65 % of the area; the ecological state of the ecosystems is tense or even critical in some places. The area of lichen tundras has decreased by 3,5–4 times, total fodder reserves in lichen-moss tundras, in those areas where they are still preserved, have decreased by 3–10 times. The total reserves of green grass fodder and shrubs has decreased by 1.5–2 and 2–8 times, respectively. Desertification of highlands (bare sands occupied about 6 %) and waterlogging of lowland areas is going on. Technogenic impact on tundra ecosystems disturbs soil and vegetation cover, hydrological regime. Waterlogging of lowlands due to thermoerosion is starting. It is necessary to find compromises between economy, ecology, social and national interests.

The thermal evolution of the permafrost in the sedimentary section of the Tyumen superdeep SG-6 well has been numerically reconstructed using the ICE2020 software package, which is part of the GALO flat basin modeling system. The thermal evolution of the sedimentary strata in the last 3.5 My is considered as the final stage of the basin modeling, whose formation began with continental rifting in the Late Permian. Abrupt climate changes in the late Pliocene–Holocene led to a decrease in the rock temperature by 15–20°C in the upper 1–1.5 km of the SG-6 sedimentary section. The maximum thickness of the permafrost in the study area was about 711 m, reached 2.6 Mya. The maximum thickness of the permafrost for the last ice age (23–18 thous and years ago) was 412 m, reached about 14.5 thousand years ago. According to our modeling, the modern base of the permafrost is at the depth of 311 m and is degrading with the rate about 13 m/1000 y. The results of our calculations with a database of climatic data limited to the last 50 and 100 thousand years differ markedly from the modeling results with the complete database for the last 3.5 My.

The exposition of the department "Natural Zones" in the Earth Science Museum of Moscow State University (25th floor, halls Nos 18–20) presents 15 full-scale exhibits of dry 3D fragments of biogeocenoses, namely: spotted tundra; forest tundra; swamps: flat-hummocky tundra, oligotrophic upland and mesotrophic lowland sedge; spruce-green grass; grass-grass and tipchak-grass steppes; subtropical mountain forest; alpine meadows; semi-deserts; deserts – clay, wormwood-solyanka and ilak belosaksaulnik on ridge sands; and savannas. These exhibits demonstrate the interaction of the main natural components characteristic of the respective climatic conditions (soils, flora, and fauna). The article gives a description of the animal species represented in the exposition based on a visual examination of zoological exhibits and a study of their nomenclature and taxonomic changes.

The article describes two groups of facies most widely represented in the collections of Lower Frasnian invertebrates of the Main Devonian Field in the Mining Museum (hardgrounds and pelecypod banks). The presence of three types of hardgrounds has been established, differing in the nature of the original bottom and the time of exposure of each hardground, and hence structural and textural features of rocks and systematic composition of oryctocenoses. The first type is crinoidal limestone with an extensive complex of sclerobionts and traces of bioerosion by Trypanites Mägdefrau, an uneven surface and a visually almost complete absence of impregnation. In hardgrounds of this type, three generations of sclerobionts are distinguished, namely: abiogenic substrates (first), incrustators of the remains of organisms of the first generation (second), and bioerosion organisms (third). The second type is micritic limestone with a smooth glass-type surface, a small complex of sclerobionts and traces of bioerosion by Trypanites Mägdefrau. The third type is pelecypod limestones with an uneven surface, isolated sclerobionts, numerous traces of bioerosion by Trypanites Mägdefrau and strong ferruginous impregnation. For the most widespread hardgrounds of the first type, the presence of specific taphofacies has been established, characterized by good preservation of organic remains of the first generation, an almost complete absence of organic remains of the second generation, and a complete absence of bioerodible organisms. The appearance of such taphofacies is due to the short exposure time of the hardground and the beginning of a rapid process of new accumulation immediately after the appearance of the first organisms of the second generation. The presence of such taphofacies emphasizes the importance of distinguishing taphofacies in certain paleofacies and certain types of oryctocenoses. In the oryctocenoses of pelecypod shells, three morphological and ethological types of cornulitids have been established. The most representative settlements of cornulithids were characteristic of calcareous clay soils with small areas of compacted bottom.

The article presents the results of studies of a number of sections of Lower Cretaceous (Aptian) deposits in the Saratov Right Bank region (settlements Krasnyi Oktyabr’, Doktorovka, Kurdyum and Shirokoe), confined to the Yelshano-Kurdyum uplift. Oryctocenosis combines autochthonous (ichnofossils), subautochthonous (bivalves and gastropods) and allochthonous (ammonites, wood fragments) elements. Sedimentological and mineralogical indicators (ripple marks, desiccation cracks, wedge-shaped structures, cross-bedding, glauconite, and calcite veinlets), as well as fossil remains and features of their taphonomy, allow us to diagnose the coastal ecosystem of the epicontinental sea basin. In the ecosystem format, we see a variety of physico-geographical situations: areas of the bottom which are periodically actively bioturbated and hydrodynamically transformed into mature hardground; zones of active hydrodynamics with the formation of cross-bedding; and zones of subaerial surfaces with the possible development of stick soils. Reconstruction of the paleoecosystem is complicated by the presence of a number of natural facts that have not been unambiguously interpreted, images of which are given in the article. The studied sections are of interest from the standpoint of geoheritage. Selected natural facts are actively involved in the development of a number of geoscientific university museums.

The article examines the problem of energy efficiency in the chain from the production of fertilizers to their logistics, application, and waste production and disposal based on the huge amount of data accumulated in recent years on greenhouse gas (GHG) emissions (primarily CO₂ and methane). Carbon dioxide emissions are shown to occur primarily from fuel combustion, as well as from the use of methane and CO₂ as precursors for nitrogen fertilizers. GHG emissions can be considered as a measure of energy efficiency when assessing the life cycle of mineral fertilizers. Relevant examples are given.

Built over five centuries ago using white stone, this unique Russian architectural monument stands as the sole surviving building from the estate of the Romanov boyars, located in the ancient part of Moscow known as “Zaryadye.” Today, it serves as the museum “Chambers of the Boyars of the Romanovs.” However, the masonry has begun to collapse under the influence of water, frost, and various technogenic loads.

The monument’s location is characterized by the presence of unfavorable engineering and geological processes, with flooding being the main issue. This has led to a rise in groundwater levels and their constant interaction with the foundation’s soil. The excess moisture content in the limestone pores, saturated with aggressive components (SO42-, NO3-,Cl-), has led to limestone dissolution and leaching, as well as salt crystallization both on the surface and inside the masonry.

To understand the weathering processes affecting the limestone, researchers conducted a study on samples taken from several parts of the monument, dividing them into several groups based on their structural stability. The results revealed that the structurally unstable, completely destroyed to a dispersed state (reminiscent of flour) samples, displayed significant changes in their physical, mechanical and chemical properties. This was due to the leaching of calcite, leading to a decrease in its content from 99 % down to 40-45 %, and an increase in porosity from 15 % up to 49 %, resulting in a density reduction from 2.29 down to 1.32 g/cm³.

The study also found that microbial components in the stone could also lead to an increase in the content of finely dispersed fractions. The walls of the monument, both inside and outside, were found to be colonized by mold fungi (9 species) and bacteria (2 species). The genera Penicillium (5 species) and Aspergillus (2 species), renowned as biodestructors of stone materials, were the most prevalent among the identified species. The content of these micromycetes varied significantly (ranging from 300 to 105 CFU/g) depending on the sampling location.

The concept of biogeocenoses as structural units of the biosphere is reflected in the exposition of the department “Natural Zones” (Halls No. 18–20 on the 25^th floor) of the Moscow State University Museum of Earth Science: the interaction of the main natural components characteristic of the corresponding climatic conditions – soils, flora and fauna – is succinctly demonstrated. There are 15 full-scale exhibits of dry volumetric fragments of biogeocenoses: spotted tundra; forest tundra; swamps: flat-hummocky tundra, oligotrophic upland and mesotrophic lowland sedge; spruce-green grass; grass-grass and tipchak-grass steppes; subtropical mountain forest; alpine meadows; semi–deserts; deserts – clay, wormwood-solyanka and ilak belosaksaulnik on ridge sands; and savannas as well.

A new three-stage method for assessing the CO₂ balance in plant communities was formulated. The methodology includes not only taking into account the absorption of C-CO₂ during plantation vegetation, but also the processes occuring when using wood. In managed forests, when calculating the carbon balance, it is necessary to take into account the release of CO₂ not only at direct, but also at indirect consumption of technical energy for laying plantations, caring for them, and felling for final use. As a model, the consumption of technical energy in cultivating natural and genetically modified forms of aspen Populus tremula L. was calculated. The large role of indirect expenditure of technical energy in the C-CO₂ balance in forest plantations is shown. The use of a genetically modified clone of aspen significantly increases the productivity of plantations and CO₂ absorption from the atmosphere compared to its natural form. On a long time scale the final amount of CO₂ runoff from the atmosphere depends not only on the area of forests and their productivity, but also on the way of using wood. There is a highly effective way of using forest plantations to regulate the carbon dioxide content in the atmosphere, which is currently little paid attention, namely, the so-called substitution effect. Replacing energy-intensive materials (reinforced concrete, plastic, metal, and brick) with wood may be one of the main ways for the positive impact of forests on the CO₂ content in the atmosphere. The use of wood biomass from thinning, wood processing wastes, short-rotation forests for heat and power generation is a great reserve for replacing fossil hydrocarbons. The forest area needs to be expanded to increase wood production to replace energy-intensive building materials and generate biofuels.

Based on some previously unpublished archival materials, the biography of Lecturer at Kazan University S.I. Limanova-Kolosova (1899–?), a little-known Russian microbiologist, was restored for the first time. Seraphima Ivanovna Kolosova (née Limanova) was born in the family of a veterinarian and received a natural science education at Kazan University. Since the beginning of the 1920s, she started working at the Botanical Laboratory under the guidance of Professor A.P. Ponomarev, who at that time was actively developing the microbiological lead. The works of S.I. Limanova-Kolosova were devoted to analysis of the microflora of various reservoirs in Tatarstan and neighboring regions. Her research was accompanied by lectures on general microbiology, aquatic and soil micro biology, technical microbiology and fermentation physiology. The scientific works of S.I. Limanova-Kolosova have allowed microbiological topics to take root within the walls of Kazan University and gave a further impetus to the development of this lead.