Труды сотрудников ИЛ им. В.Н. Сукачева СО РАН

/ V. A. Alexeyev // Science of the Total Environment. - 1995. - Vol. 160-161. - P605-617, DOI 10.1016/0048-9697(95)04395-H . - ISSN 0048-9697
Аннотация: As are other parts of the earth, arctic and subarctic territories are influenced by global, regional, and local air pollution. In Europe, the greatest load of airborne contaminants is observed in terrestrial ecosystems of the Kola Peninsula; in Asia, the greatest load is found in ecosystems of the Taimyr Peninsula, where large copper-nickel smelters are functioning. The studies described here for these regions encompassed local and regional deposition of pollutants (mainly sulfates and trace metals); changes in the composition, structure, productivity, and status of forest vegetation; morphological reactions of plant species and their regenerative activity; reforestation processes; successions; element composition of plants and soils; and biological activity of soils. The key findings of long-term studies are as follows. First, the symptoms of plant damage by air and soil pollutants in arctic and temperate zones are the same. Second, plants weakened by natural stresses have lower thresholds of sensitivity to airborn pollutants. Third, rapid destruction of northern plant communities by pollutants is often connected with a wide distribution of sensitive species (e.g., lichens) and previously weakened plants. Fourth, the specific structure of far northern forest and tundra ecosystems (in particular, open canopy and/or thin photosynthetic layer) and the severe climate produce some peculiarities in plant damage, namely (1) a large difference in the rate and intensity of damage to upper and lower parts of plants if the green parts are above or under snow in the winter, (2) simultaneous damage of different parts of stands that are above snow cover, and (3) an increase in the krummholz effect (stunted, low-lying branches) for evergreen coniferous trees. These findings were obtained for conditions of evident airborne contamination. The impact of low level regional pollutants on arctic and subartic vegetation is not sufficiently understood.

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Держатели документа:
Sukachev Institute for Forest Research, Akademgorodok, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Alexeyev, V.A.

/ N. V. Oreshkova, T. S. Sedel’nikova, S. P. Efremov, A. V. Pimenov // Contemp. Probl. Ecol. - 2020. - Vol. 13, Is. 6. - P569-576, DOI 10.1134/S1995425520060116 . - ISSN 1995-4255
Аннотация: Abstract: The DNA polymorphism of seven coenopopulations of Siberian stone pine (Pinus sibirica Du Tour) growing in a region which is typical for mountain taiga pine forests—the northeastern part of the Kuznetsk Alatau—has been studied. According to the data of 11 nuclear microsatellite loci, 44 allelic variants which significantly differed between the studied coenopopulations in composition and frequency of occurrence are identified. The highest level of allelic diversity is found in the Ps_80612 and Ps_1502048 loci, in which eight and seven alleles are detected, respectively. The calculation of the main parameters of genetic diversity have shown, on the whole, a relatively low level of polymorphism of the studied samples (NA = 3.078, NE = 1.877, HE = 0.445, and HO = 0.401). An analysis of the degree of subdivision of coenopopulations has revealed that about 95% of the total genetic diversity is concentrated within populations, while the interpopulation component accounts for only about 5% (FST = 0.049). The diagnosed differences in the level of P. sibirica genetic polymorphism are determined by several factors: the presence of orographic and phytocenotic barriers between the coenopopulations, which define the directions of seed propagation vectors along the watercourses of river basins that form the Chulym River in the eastern sector of the Kuznetsk Alatau and Tom River in the western sector; a significant level of bioclimatic and environmental extremeness of habitats of coenopopulations in accordance with the height above sea level; and anthropogenic pressure, including periodic deforestation and recreational impact on coenopopulations located near settlements. These factors, which have a significant microevolutionary component, determine the adaptation trends of coenopopulations of P. sibirica and morphological singularities and reproductive potential of trees and, ultimately, they control their genetic polymorphism in the studied part of the Kuznetsk Alatau. © 2020, Pleiades Publishing, Ltd.

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Держатели документа:
Federal Research Center, Kola Scientific Center, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Sukachev Institute of Forestry, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Oreshkova, N. V.; Sedel’nikova, T. S.; Efremov, S. P.; Pimenov, A. V.

/ N. V. Oreshkova, T. S. Sedel'nikova, S. P. Efremov, A. V. Pimenov // Contemp. Probl. Ecol. - 2020. - Vol. 13, Is. 6. - P569-576, DOI 10.1134/S1995425520060116. - Cited References:28 . - ISSN 1995-4255. - ISSN 1995-4263РУБ Ecology

Аннотация: The DNA polymorphism of seven coenopopulations of Siberian stone pine (Pinus sibirica Du Tour) growing in a region which is typical for mountain taiga pine forests-the northeastern part of the Kuznetsk Alatau-has been studied. According to the data of 11 nuclear microsatellite loci, 44 allelic variants which significantly differed between the studied coenopopulations in composition and frequency of occurrence are identified. The highest level of allelic diversity is found in the Ps_80612 and Ps_1502048 loci, in which eight and seven alleles are detected, respectively. The calculation of the main parameters of genetic diversity have shown, on the whole, a relatively low level of polymorphism of the studied samples (N-A = 3.078, N-E = 1.877, H-E = 0.445, and H-O = 0.401). An analysis of the degree of subdivision of coenopopulations has revealed that about 95% of the total genetic diversity is concentrated within populations, while the interpopulation component accounts for only about 5% (F-ST = 0.049). The diagnosed differences in the level of P. sibirica genetic polymorphism are determined by several factors: the presence of orographic and phytocenotic barriers between the coenopopulations, which define the directions of seed propagation vectors along the watercourses of river basins that form the Chulym River in the eastern sector of the Kuznetsk Alatau and Tom River in the western sector; a significant level of bioclimatic and environmental extremeness of habitats of coenopopulations in accordance with the height above sea level; and anthropogenic pressure, including periodic deforestation and recreational impact on coenopopulations located near settlements. These factors, which have a significant microevolutionary component, determine the adaptation trends of coenopopulations of P. sibirica and morphological singularities and reproductive potential of trees and, ultimately, they control their genetic polymorphism in the studied part of the Kuznetsk Alatau.

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Держатели документа:
Russian Acad Sci, Fed Res Ctr, Kola Sci Ctr, Siberian Branch, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Sukachev Inst Forestry, Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Oreshkova, N., V; Sedel'nikova, T. S.; Efremov, S. P.; Pimenov, A., V