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Abstract This article focuses on informal road networks in remote Siberian communities: their connectivity and the relations between road owners and road users. These informal roads serve both as conduits and hindrances for local connectivities. Data was collected in the villages Vershina Khandy and Tokma of the Irkutsk region, and the study describes the variety of informal roads in the region: subsistence trails and tracks, inter-settlement roads, forest roads, and oil and gas service roads. Different actors participate in the expansion of the informal road network; our research demonstrates that communities accommodate new infrastructures and negotiate their mobility and connectivity informally according to their needs and desires under uneven power hierarchies. In conclusion, we discuss the possibilities and constraints that different groups of roads users experience because of the informal character of roads. 

Abstract Cryosphere has a global role as a biogeophysical phenomenon. It affects the livelihoods of people inhabiting permafrost areas and is affected by human activity within and outside of the cryosphere’s geographical span. “Frozen Commons (FC) are cryosphere resources and landscapes, defined by snow, ice, permafrost, that are experienced, used, protected and managed by groups of people together. This paper highlights collaboration between herders and scientists aimed at improving the understanding of frozen commons in northern Mongolia, a region of rapid cryosphere transformation. The impact of climate change on Indigenous and pastoralist communities in Mongolia is profound, leading to the damage or loss of frozen commons critical for local livelihoods. Therefore, Indigenous and local knowledge becomes crucial in assessing and predicting the climate-driven dynamics of frozen commons. In 2022, 2023, 2024 a team of permafrost scientists, geographers, and economists conducted interviews in reindeer and cattle herder camps in Khövsgöl Aimag (Province) located in the northern part of Mongolia. Local livelihoods depend not only on cattle, which allows us to examine a variety of animal-environment interactions and impacts on pastoralism. The analysis of interviews indicates that frozen commons is a vital resource for the Khövsgöl communities and hold significant importance in their daily lives. Permafrost plays a key role for herders as it provides water resources for pastures and local rivers, which is critical during dry summers. Ice and snow also have many uses, such as a source of water, winter transport, and the basis of cultural events. As winters become shorter and ice conditions become less predictable, the sustainability and availability of these resources for local people are under threat. In light of these challenges, it is imperative to formulate climate adaptation and mitigation strategies through collaborative efforts that actively involve and respect the perspectives of Indigenous and local people. 

Changes in river runoff resources, volumes of water intake from surface water sources, and discharge of wastewater into them under contemporary global warming in the basins of the Volga–Kama and Angara–Yenisei reservoirs were analyzed by comparison with the base period, characterized by colder climatic conditions and the largest volumes of water intake and wastewater discharge. The water stress index (WSI) and the index of reciprocal dilution of polluted wastewater (RDI) were examined to reveal features of the change in the water-industry load on river runoff resources in reservoir basins during the period of contemporary global warming (compared to the previous base period) as a result of climate change combined with changes in the volumes of water intake and discharge of polluted wastewater. Both indices were calculated relative to the annual free flow for years of average river flow and the flow of low-water years. The dilution factor was estimated relative to the annual total flow. 1. The basins of the Volga–Kama reservoirs are characterized by a higher level of water-industry load, which is especially noticeable in the significantly lower RDI. 2. When calculating the dilution factor relative to the annual total flow, the level of water-industry load turns out to be much lower both in the base period and in the period of contemporary global warming. 3. At the same time, under global warming conditions, the dilution level of polluted wastewater in the basins of all reservoirs exceeds the minimum required level. 

Many western scientific disciplines adopted Indigenous Knowledge and terminology without deference or understanding of the original meanings and values attached to Indigenous terms and concepts. This form of scientific appropriation has become a serious issue in light of decolonizing Arctic research. The notion of Alaas is an example of such appropriation by the western science-based system of Indigenous knowledge about human-nature relations. This paper aims to discuss the term Alaas as it is represented in both western science and Indigenous knowledge. The paper will explore the development of ‘alaas’ as an international permafrost science term and Alaas as an economic, traditional, cultural and spiritual space of the Sakha People in Northeastern Siberia. In analyzing these histories and meanings, the authors will attempt to provide a pathway to decolonizing western science-appropriated Indigenous terminology. 

The Arctic region is a complex and dynamic environment, inhabited by Indigenous and non-Indigenous communities and non-human species. Understanding and engaging with the Arctic requires interdisciplinary approaches that integrate sciences, arts, local knowledge, and Indigenous perspectives. The exhibition, Arctic InfraScapes, (2023) and other multimedia projects initiated by the international platform ArtSLInK (Arts, Science, Local, and Indigenous Knowledge) used an audio-visual language and recent digital realms to express concepts and ideas about the future of the Arctichardandsoftinfrastructures affected by the climate change. The article presents the Indigenous scholar and curator’s perspective on the form and process of creating multimodal narrative(s) based on the ArtSLInK methodological approach. It seeks to showcase how this approach provides grounds for analyzing the possibilities and challenges associated with converging diverse knowledge systems. 

Wildfires significantly influence the environmental distribution of various elements through their fire-induced input and mobilization, yet little is known about their effects on the forest floor in Siberian forests. The present study evaluated the effects of spring wildfires of various severities on the levels of major and minor (Ca, Al, Fe, S, Mg, K, Na, Mn, P, Ti, Ba, and Sr) trace and ultra-trace (B, Co, Cr, Cu, Ni, Se, V, Zn, Pb, As, La, Sn, Sc, Sb, Be, Bi, Hg, Li, Mo, and Cd) elements in the forest floors of Siberian forests. The forest floor (Oi layer) samples were collected immediately following wildfires in Scots pine (Pinus sylvestris L.), larch (Larix sibirica Ledeb.), spruce (Picea obovata Ledeb.), and birch (Betula pendula Roth) forests. Total concentrations of elements were determined using inductively coupled plasma–optical emission spectroscopy. All fires resulted in a decrease in organic matter content and an increase in mineral material content and pH values in the forest floor. The concentrations of most elements studied in a burned layer of forest floor were statistically significantly higher than in unburned precursors. Sb and Sn showed no statistically significant changes. The forest floor in the birch forest showed a higher increase in mineral material content after the fire and higher levels of most elements studied than the burned coniferous forest floors. Ca was a predominant element in both unburned and burned samples in all forests studied. Our study highlighted the role of wildfires in Siberia in enhancing the levels of geochemical elements in forest floor and the effect of forest type and fire severity on ash characteristics. The increased concentrations of elements represent a potential source of surface water contamination with toxic and eutrophying elements if wildfire ash is transported with overland flow. 

Long-term series of annual and seasonal water flow and major ions in the Pechora River were analyzed. Long-term phases of increased and decreased water flow were identified, ranging in duration from 11 to 49 years, and the major characteristics of these phases were determined. Changes in the sequence and boundaries of contrast phases in the annual and snowmelt spring–summer flood runoff were found to coincide. The difference between the mean seasonal water runoff during the phases of increased and decreased flow varied from 12 to 41%. The ion flow values of contrast phases typically differed by 9 to 36%, which is less than for water flow. This is due to the inverse dependence between ion concentrations and water discharge. Such peculiar negative feedback stabilizes the rates of chemical denudation in the river catchments to some extent and, thus, the discharge of major ions into seas, even during significant variations in water.