I. V. Petrova

• Main Botanical Garden Of Russian Academy of Science

The effect of light and root competition of the tree stand on the growth of the Pinus sibirica Du Tour undergrowth in post-fire birch forests of different ages is investigated using the example of mid-taiga forests of the Middle Urals. The studies were carried out on the basis of a microecosystem approach, using indices of light competition of the...

The study of the α diversity of the stand and the herb layer of all major forest types of primary pine and spruce forests in the Middle Urals was conducted. Four indices (Shannon's Diversity Index, Pielou's Evenness Index, Simpson's Diversity Index, Zhivotovsky's Diversity Index) were used to quantify α diversity. The indices were calculated based...

The Trans-Ural region is the southern point of the common heather (C. vulgaris) range. Field ecophysiological study of C. vulgaris plants transpiration intensity (IT) was carried out in connection with the problem of marginal populations adaptation to arid climate. The research was carried out in the forest-steppe of the Trans-Ural region (Kurgan r...

The research is devoted to an urgent modern problem: the identification of temperature factors that limit the distribution and survival of plants in the mountainous conditions of the Northern Urals. The article’s aim is to determine the air temperature in four altitudinal zones of the southern part of the Northern Urals (Sverdlovsk region 59º30´N,...

Identifying the patterns of dynamics of natural populations of woody plants at the stage of their renewal is one of the main problems of forest ecology. The reforestation process is determined by both the dynamics of seed production and the specificity of seed dispersal of forest tree species. The five-needled pine renewal the Cembrae subsection wi...

The aim of the research is to reveal the relationship between the age and composition of the forest stand and the regeneration of Picea obovata Ledeb. and Abies sibirica Ledeb. Null hypothesis: we can estimate young generations of P. obovata and A. sibirica under the forest canopy based on the composition and age of the forest stand. The studies co...

The article presents the results of the study of fifty populations of common heather (Calluna vulgaris (L.) Hull) collected throughout its range. A phased comparative analysis (genetic, biochemical, anatomical, morphological, and ecological) was carried out with the estimation of indicators that included two key populations—Zavodouspenskoe (Pritobo...

The purpose of this work is to determine the length of the root systems of Siberian stone pine undergrowth (Pinus sibirica Du Tour) growing in the mountain tundra of the Northern Urals and to establish regression relationships with its aboveground parameters and age. The studies were carried out in the belt of mountain stony shrub-moss-lichen tundr...

To preserve biological diversity, it is necessary to determine the genetic structure of species populations, because this gives the most complete picture of the manifestation of polymorphism and makes it possible to detect genetically and phenotypically distinct subspecies. The information obtained will help determine the optimal habitat and protec...

There is a direct linear relationship between the total amount of carbon emitted by human activities and the level of warming on the Earth’s surface. At the same time, warming in the northern regions of Eurasia is faster than in the southern ones. In this work, we considered changes in atmospheric temperature and accumulation of precipitation in th...

The processes of natural reforestation play a crucial role for the preservation of primary coniferous forests and the success of their restoration after catastrophic impacts. The objective of our research was to identify the features of the natural renewal of the main coniferous forest-forming plants under the canopy of stands in the mountains of t...

The adaptive capacity of ecosystems is a key to maintaining ecosystem functions and preserving biodiversity at all levels. The research was carried out in the western Southern Ural low-hill terrains (Russia). We analyzed distributions of above-ground biomass of herb layer species in the primary spruce, long-term secondary birch 20-35-year forests,...

Simulation of fire impact on forest floor renewal in pine forests was based on predictions for 2100 by the Canadian Climate Centre for increase in temperatures of by 4.5 °C and total precipitation by 14% in the West Siberian pre-forest-steppes and empirical regression relationships between them and the degree of burnt forest floor, as well as amoun...

The history of the interaction between the boreal floras of northern Eurasia and those from the mountain areas located at intermediate latitudes remains insufficiently studied. Twenty-four population samples of 4 to 34 trees were analyzed with eight mitochondrial DNA (mtDNA) markers and four chloroplast DNA (cpDNA) microsatellite loci to study the...

The aim of the research was to determine the origin of an isolated Atlantic Azorean population of heather (Calluna vulgaris (L.) Hull). The chloroplast DNA analysis showed it possessed genetic affinities with 4 populations of the Dinaric-Pontic group in the extra glacial zone of the Mediterranean area as well as with a population from the Atlantic...

The dates of appearance of a representative portion of Pinus sylvestris L. pollen in palynospectra (≥20%) have been analyzed as a parameter reflecting the spread of leading-edge pine populations from central and eastern Europe to the Lofoten region via probable alternative routes of population immigration. It has been found that they could reach th...

The distribution of nine chloroplast DNA haplotypes in four insular North-Atlantic and four European coastal Atlantic populations of Calluna vulgaris in the glacial zone of the range has been analyzed in comparison with that in six marginal southern populations in the nonglacial zone of the Atlantic and Mediterranean regions. As a result, two hypot...

The distribution of nine chloroplast DNA haplotypes in four insular North-Atlantic and four European coastal Atlantic populations of Calluna vulgaris in the glacial zone of the range has been analyzed in comparison with that in six marginal southern populations in the nonglacial zone of the Atlantic and Mediterranean regions. As a result, two hypot...

A new method for determining the upper forest border (UFB) as the border of the “root-closed” stand and regrowth as its potential vanguard is proposed. The mass dispersal of Pinus sibirica populations by the nutcracker (Nucifraga caryocatactes) in the UFB ecotone in the Northern Urals (Pavdinskii Kamen’ and Tretii Bugor Mountain) from the middle-mo...

As a result of allozyme analysis, Nei’s genetic distances were determined between the phylogeographic group of seven populations of Pinus sylvestris L. in the “glacial” zone of the range in Central Yakutia and 25 populations of its hypothetical Pleistocene refugia of the southern nonglacial zone within the entire range of the species in Northern Eu...

Allozyme analysis of 18 Pinus sylvestris L. populations from seven landscape-geographic groups has been performed in the Greater Caucasus, Crimea, and Russian Plain. The results show that populations of the Mt. Elbrus region (isolated by high mountain ridges) are characterized by lower polymorphism and most distinct differentiation (at the level of...

On the basis of the system of ordination for the geographic zonal and provincial replacement of types of pine forests, gradients, and some geographical trends of the main parameters of the morphostructure, the growth and viability of the cenopopulations of common heather Calluna vulgaris (L.) Hull between various subzones of the Russian Plain and t...

The paper is devoted to the analysis and generalization of the results of stationary studies on differentiation of factors of the epi-soil environment, natural forest regeneration, and formation of secondary dendrocenoses on burns and clean cuts in two pine forest types most prevalent in the pre-forest–steppe subzone of Western Siberia (Pripyshmisk...

The history, distribution routes, and phenogeographic structure of the Scots pine (Pinus sylvestris L.) in the northeast of the Russian Plain were studied on the basis of paleogeographic data and results of our own phenotypic and allozyme-genetic studies. It is assumed that, after the maximum Dnieper glaciation, P. sylvestris populations could succ...

Quantitative ecological and genetic studies in the pine forests of North Eurasia based on the example of Pinus sylvestris L. have allowed the constructive population genetic and ecological principles and parameters for selection, assessment, and classification of forest genetic reserves (FGRs) to be grounded. The genetic parameters of FGR populatio...

Geographic variation and differentiation of the chloroplast DNA haplotypes and morpho-anatomical leaf parameters were assessed in a number of eastern European groups of Calluna vulgaris (L.) Hull. populations and in the Pritobolien group of populations of this species in Western Siberia, which have long been isolated from the European populations....

An allozyme analysis of 67 Pinus sylvestris L. populations distributed over the entire species range has provided a basis for determining locations of 12 hypothetical Pleistocene refugia (HPRs) in its southern marginal part and estimating their relative contributions to the gene pools of seven phylogeographic population groups (PPGs) in the glaciat...

Generalizations are made on the basis of results obtained in the course of long-term, stationary quantitative studies on phenogenetic divergence of P. sylvestris populations growing in an upland bog and the adjacent dry land area in the pre-forest-steppe zone of Western Siberia. Contrasting differences between the two edaphoecotopes and almost comp...

Analysis of geographic variation of chloroplast DNA in the eastern European and western Siberian (Tobol) groups of Calluna vulgaris populations isolated from each other for a long period of time has revealed distinct differentiation between them. It has been shown that three populations growing in the Russian Plain and Karelia share two haplotypes...

To analyze and quantitatively estimate the contribution of different factors of competition from the edificator tree stand to its effect on plants comprising the lower forest vegetation layer, a set of ecophysiologically based indices of root, light, and integrated competition has been proposed and tested. The results obtained in pine and spruce fo...

The phylogenogeographic structure, polymorphism, and differentiation of Pinus sylvestris L. have been studied for the first time by means of allozyme analysis of 143 populations along a network of transects covering the entire species range. The results show that the species in general is characterized by a significant level of differentiation, reg...

Gradients of genetic distances (GGDs) between 26 adjacent cenopopulations of Scotch pine (Pinus sylvestris L.) along the transects through the distinct landscape-ecotopic isolation borders were analyzed graphically. The results made it possible to reveal and quantitatively estimate gradients and borders of gene-pool structural patterns in populatio...

The allozyme analysis of six local populations of Pinus mugo Turra and six populations of P. sylvestris L. in the Ukrainian Carpathians, Swiss Alps, and Schwarzwald has shown a higher polymorphism and greater interpopulation differentiation of the Carpathian group of P. mugo populations compared to the Alpine group (Nei’s genetic distance DN 78 at...

The analysis and synthesis of the data on allozyme structure, polymorphism and degree of genogeographic differentiation of mountain populations of Scots pine isolated in the Ukrainian Carpathians showed considerable genetic variability of foothill and mountain populations of Pinus sylvestris L., as well as the average genetic distance between these...

Comparative allozyme analysis of 26 marginal island populations of Pinus sylvestris L. and 20 populations from the center of the species range has confirmed, at the species level, the Wright-Dubinin “island model” of automatic genetic processes and Mayr’s hypothesis about homozygotization of small isolated populations at range boundaries. It has be...

The thesis of the genetic divergence of Pinus sylvestris L. populations that have spread to bogs from the original dry-land populations has been deduced from the concept of the cyclicity of helio- and geophysical processes, derivative postulates on climatic cycles, formation of Holocene high bogs, contrasting differentiation between their environme...

The paper presents the results of the studying of the parameters of post-fire structure and seed-bearing capacity of tree stands, factors of surface medium (thickness of burnt duff, projective cover of herb and moss vegetation) as well as number, vitality, and age structure of self-seeded Scots pine (Pinus sylvestris L.) and accompanying small-leav...

Gradients of Nei's genetic distances between 15 samples of Pinus sylvestris L. trees were analyzed along three submeridional transects, from Scandinavia to the Mediterranean and Transcaucasia. As a result, distinct chorogenetic differentiation was revealed between the populations of this species growing in climatically specific regions of northern...

Nei's genetic distances (Nei, 1972, 1978) between 12 Scotch pine (Pinus sylvestris L.) populations were determined using isozyme analysis. The gradients of these distances along the 1500-km meridional transect in the Transural Region and Northern Turgai from the pre-forest-tundra subzone (the Synya River basin) to the southern steppe (the Naurzumsk...

Genetic differences between six Scotch pine (Pinus sylvestris L.) populations were estimated by means of isozyme analysis of pine needles. Two populations were situated at different elevations on the northern slopes of the Ukrainian Carpathians, two were located on the Russian plain, and two were from the Kola Peninsula. The populations located on...