Evgenii Sergeevich Zakharov

• assistant professor at Federal State Autonomous Educational Institution of Higher Education "M. K. Ammosov North-Eastern Federal University"

Severe wildfire seasons in the Republic of Sakha (Yakutia) raise questions regarding long-term fire dynamics and their drivers. However, data on long-term fire history remains scarce across eastern Siberia. We present the first composite of reconstructed wildfire dynamics in Yakutia throughout the Holocene, based on eight newly contributed records...

This study presents new data on population-genetic polymorphism, phylogeny and phylogeography of two vicariant species belonging to the Daphnia longispina s.lat. complex (Crustacea: Cladocera) in northern Eurasia, D. longispina s.str. and D. dentifera. Based on the variability of the fragments of non-coding 12S rRNA and the protein coding ND2 genes...

This study presents new data on the population-genetic polymorphism, phylogeny, and phylogeography of two vicariant species belonging to the Daphnia longispina s.lat. complex (Crustacea: Cladocera) in northern Eurasia, D. longispina s.str. and D. dentifera. Based on the variability of the fragments of noncoding 12S rRNA and the protein coding ND2 g...

The first data on the population genetic structure of the D. cristata Sars, 1862 and D. longiremis Sars, 1862 species (Anomopoda: Daphniidae) from the water bodies of North Eurasia are present. The variability of the 12S gene fragment of the mtDNA for these taxa belonging to subgenus Daphnia (Daphnia) O.F. Müller, 1776 (Crustacea: Cladocera) in thi...

The first data on the population genetic structure of the Daphnia cristata Sars, 1862 and D. longire-mis Sars, 1862 species (Anomopoda: Daphniidae) from the water bodies of Northern Eurasia are presented. The variability of the fragment of the 12S gene of the mtDNA for these taxa belonging to subgenus Daphnia (Daphnia) O.F. Müller, 1776 (Crustacea:...

The present distribution of Siberian boreal forests that are dominated by larches (Larix spp.) is influenced, to an unknown extent, by glacial history. Knowing the past treeline dynamics can improve our understanding of future treeline shifts under changing climate. Here, we study patterns in the genetic variability of Siberian Larix to help unrave...

On the basis of 16 microsatellite markers, the genetic structure of the domesticated reindeer of two breeds, Evenk and Even, bred on the territory of the Central Siberian Plateau and adjacent territories, was studied. Genetic flows between modern domesticated reindeer populations of two breeds were analyzed. Significant differences were found betwe...

Only a few palaeo-records extend beyond the Holocene in Yakutia, eastern Siberia, since most of the lakes in the region are of Holocene thermokarst origin. Thus, we have a poor understanding of the long-term interactions between terrestrial and aquatic ecosystems and their response to climate change. The Lake Khamra region in southwestern Yakutia i...

Aim Our aim was to assess the population structure, genetic diversity and demographic history of the wolverine (Gulo gulo) throughout its entire Eurasian range. Additionally, we aimed to contextualize and put into perspective the state of the endangered Fennoscandian population by emphasizing its connectivity to other populations. Location The mai...

The sable (Martes zibellina L.) range extends from the western slopes of the Ural Mountains to the Far East. Sable has a complex intraspecific structure; geographic populations differ in a number of morphological traits. Unregulated sable hunting for several centuries, forest fires and industrialization of Siberia led to a sharp decline in the spec...

The results of the morphological and genetic analysis of populations/forms/species of tanned whitefish from the middle and lower reaches of the river are presented. Lena, and adjacent rivers. There are reasons to believe that, despite the significant heterogeneity of whitefish in Siberia, a small number of stable forms/species inhabit the water bod...

The present distribution pattern of Siberian boreal forests that are dominated by larches is to an unknown extent influenced by the glacial history. Here, we investigated whether we can observe patterns in the genetic variability of Siberian larches (Larix spp.) that can help us to unravel biogeographic migration routes since the Last Glacial Maxim...

The present distribution of Siberian boreal forests that are dominated by larches is influenced, to an unknown extent, by the glacial history. Knowing the past treeline response to climate shifts can improve our understanding of future treeline dynamics under changing climate. Here, we study patterns in the genetic variability of Siberian larches (...

This paper discusses the results of the introduction of the muskrat and American mink in Yakutia (Russia). The time course of harvesting of muskrat skins during an eighty-one-year period (1941-2021) is also analyzed. A map of quantitative distribution of muskrats in Yakutia was constructed on the basis of the harvesting data. The work on muskrat in...

The article summarizes our own and literature data on fur color and reproduction in natural populations of sable in Yakutia. Some information is also provided on the reproduction of farm sable at Pokrovskaya Fur Farm. Geographical differences in the potential fertility of wild sable were expressed in a decrease in this indicator in the meridional d...

We compile a data set of forest surveys from expeditions to the northeast of the Russian Federation, in Krasnoyarsk Krai, the Republic of Sakha (Yakutia), and the Chukotka Autonomous Okrug (59–73∘ N, 97–169∘ E), performed between the years 2011 and 2021. The region is characterized by permafrost soils and forests dominated by larch (Larix gmelinii...

The SiDroForest (Siberian drone-mapped forest inventory) data collection is an attempt to remedy the scarcity of forest structure data in the circumboreal region by providing adjusted and labeled tree-level and vegetation plot-level data for machine learning and upscaling purposes. We present datasets of vegetation composition and tree and plot lev...

The variability of the 12S gene fragment of the mtDNA for taxa belonging to subgenus Daphnia (Daphnia) O.F. Müller, 1776 (Crustacea: Cladocera) in NE Russia is studied, and their phylogenetic analysis performed. We identified (based both on morphological and molecular data) nine species belonging to four species complexes, namely: (A) D. longispina...

Modern pollen–vegetation–climate relationships underpin palaeovegetation and palaeoclimate reconstructions from fossil pollen records. East Siberia is an ideal area for investigating the relationships between modern pollen assemblages and near natural vegetation under cold continental climate conditions. Reliable pollen-based quantitative vegetatio...

Cestodes Paranoplocephala kalelai, which parasitizes in the small intestine of Myodes voles and is distributed in northern Fennoscandia, was found in six habitats in the Asian part of Russia and eastern Kazakhstan, which indicates a wider distribution of P. kalelai on the continent. Analysis of mtDNA showed that P. kalelai is characterized by signi...

We compile a data set of forest surveys from expeditions to the northeast of the Russian Federation, in Krasnoyarsk Krai, the Republic of Sakha (Yakutia) and the Chukotka Autonomous Okrug (59-73°N, 97-169°E). The region is characterized by permafrost soils, and forests dominated by larch (Larix gmelinii RUPR., Larix cajanderi MAYR). Our dataset con...

The presented report describes the history and current state of sable breeding in Yakutia, and an attempt is made to characterize prospects for the development of sable breeding in light of ecological and physiological features of sables’ activities of daily living under the harsh conditions of northeast Asia. On the basis of archival data, the fir...

This data collection is an attempt to remedy the scarcity of tree level forest structure data in the circum-boreal region, whilst providing, as part of the data collection, adjusted and labelled tree level and vegetation plot level data for machine learning and upscaling practices. Publicly available comprehensive datasets on tree level forest stru...

The results of morphological and genetic analyses of forms/species of the Coregonus lavaretus pidschian (Gmelin, 1789) complex from the Indigirka and Kolyma river basins are presented in the context of there being recent postglacial speciation events. It has been found that the studied whitefishes belong to the sparsely rakered and low lateral-line...

Upscaling plant biomass distribution and dynamics is essential for estimating carbon stocks and carbon balance. In this respect, the Russian Far East is among the least investigated sub-Arctic regions despite its known vegetation sensitivity to ongoing warming. We representatively harvested above-ground biomass (AGB; separated by dominant taxa) at...

Boreal forests in permafrost regions make up around one-third of the global forest cover and are an essential component of regional and global climate patterns. Further, climatic change can trigger extensive ecosystem shifts such as the partial disappearance of near-surface permafrost or changes to the vegetation structure and composition. Therefor...

Upscaling plant biomass distribution and dynamics is essential for estimating carbon stocks and carbon balance. In this respect, the Russian Far East is among the least investigated subarctic regions despite its known vegetation sensitivity to ongoing warming. We representatively harvested above-ground biomass (AGB, separated by dominant taxa) at 4...

Vegetation is responding to climate change, which is especially prominent in the Arctic. Vegetation change is manifest in different ways and varies regionally, depending on the characteristics of the investigated area. Although vegetation in some Arctic areas has been thoroughly investigated, central Chukotka (NE Siberia) with its highly diverse ve...

Boreal forests in permafrost regions make up around one-third of the global forest cover and are an essential component of regional and global climate patterns. Further, climatic change can trigger extensive ecosystem shifts such as the partial disappearance of near surface permafrost or changes to the vegetation structure and composition. Therefor...

A total of 270 gray wolf Canis lupus L. specimens from different regions of Siberia (Altai krai, Altai Republic, Republic of Tuva, Krasnoyarsk krai, Republic of Buryatia, Transbaikalia, and Yakutia) were studied at seven microsatellite loci. A high level of expected heterozygosity was observed (HE = 0.676), while there were no statistically signifi...

Paranoplocephala omphalodes is a widespread parasite of voles. Low morphological variability within the genus Paranoplocephala has led to erroneous identification of P. omphalodes a wide range of definitive hosts. The use of molecular methods in the earlier investigations has confirmed that P. omphalodes parasitizes four vole species in Europe. We...

Rapidly changing climate in the Northern Hemisphere and associated socio-economic impacts require reliable understanding of lake systems as important freshwater resources and sensitive sentinels of environmental change. To better understand time-series data in lake sediment cores, it is necessary to gain information on within-lake spatial variabili...

In this study, we present an assessment of the evolutionary history and phylogenetic relationships of Asian mountain voles of the subgenus Aschizomys, genus Alticola, based on extensive sampling and phylogenetic analyses of data from mitochondrial and nuclear markers. Two species of this subgenus are wide spread in the mountain areas of northeaster...

Forest structure is a crucial component in the assessment of whether a forest is likely to act as a carbon sink under changing climate. Detailed 3D structural information about the tundra–taiga ecotone of Siberia is mostly missing and still underrepresented in current research due to the remoteness and restricted accessibility. Field based, high-re...

Rapidly changing climate in the northern hemisphere and associated socio-economic impacts require reliable understanding of lake systems as important freshwater resources and sensitive sentinels of environmental changes. To better understand time-series data in lake sediment cores it is necessary to gain information on within-lake spatial variabili...

Data on the morphology, biology, and genetics of two ecological forms of pidschian-like whitefishes of the genus Coregonus, corresponding to the descriptions of East Siberian whitefish, C. lavaretus pidschian natio brachymystax, and glacial-plain whitefish, C. lavaretus pidschian natio glacialis, from the Anabar River of western Sakha (Yakutia) Rep...

Populations from different parts of the species’ range may vary in their genetic structure, variation and dynamics. Geographically isolated populations or those located at the periphery of the range may differ from those populations located in the core of the range. Such peripheral populations may harbour genetic variation important for the adaptiv...

In 2003-2012, 687 carcasses of aboriginal sables of Zhigansk population represented by the Yenisey subspecies (Martes zibellina yeniseensis Ognev, 1925) inhabiting North-Western Yakutia were studied. Skull and body size of native sables were larger and fur colour was lighter as compared to the Vitim subspecies (M. z. princeps Birula, 1922) introduc...

This paper summarizes new data on ectopara-sites from bats (Chiroptera: Vespertilionidae) from eastern Siberia (Russia). The existence of 14 bat ectoparasite species is confirmed for this territory, including eight species of gamasid mites (Gamasina: Spinturnicidae, Macronyssidae) and six species of insects belonging to two orders (Insecta: Diptera...

The population of foxes in the central regions of Yakutia has grown by a factor of four to five during the period from 2000 to 2011–2012, following an increase in the abundance of voles from the genus Microtus. A total of 130 carcasses of foxes taken in 2007–2012 have been examined. Age- and sex-related variation in morphological features has been...

The cestodes of the subfamily Anoplocephalinae, found in 24 species of rodents in Russia and Kazakhstan, were studied. Phylogenetic analysis based on partial sequences of the cox1, nad1 and 28S rRNA genes of more than 15 species of flatworms belonging to 6 genera was performed. Cestodes from Alticola semicanus, A. strelzowi, Lagurus lagurus, Microt...

Differences in fur color that were revealed according to annual layers in register structures of teeth were found for various age groups of the sable. The relatively light fur color of the one-year-old animals reliably contrasted with the darker coloration of the animals belonging to older age groups. The results of analyzing the possible reasons f...

A species-wide phylogeographic study of the narrow-headed vole Lasiopodomys ( Stenocranius ) gregalis was performed using the mitochondrial (mt) cytochrome b gene. We examined 164 specimens from 50 localities throughout the species distribution range. Phylogeographic pattern clearly demon- strates the division into four major mtDNA lineages with fu...

A species-wide phylogeographic study of the narrow-headed vole Lasiopodomys (Stenocranius) gregalis was performed using the mitochondrial (mt) cytochrome b gene. We examined 164 specimens from 50 localities throughout the species distribution range. Phylogeographic pattern clearly demonstrates the division into four major mtDNA lineages with furthe...

The age-specific changes in the width of the fang pulp cavity in common fox were studied in the middle Lena River basin. The age of commercial samples of the fox species was determined according to the estimation of a relative width of pulp cavity (Smimov, 1960) and annual increment in the tooth cement (Klevezal, 1988). The tooth channel index in y...