Microhabitat distribution of arboreal oribatid mites (Oribatida), associated with the Siberian pine (Pinus sibirica) of Western Siberia

2019 ◽  
Vol 78 (4) ◽  
pp. 469-483 ◽  
Author(s):  
Vladimir Salavatulin
Keyword(s):  
Western Siberia ◽  
Oribatid Mites ◽  
Pinus Sibirica ◽  
Microhabitat Distribution ◽  
Siberian Pine

Birds of Siberian-pine (Pinus sibirica) forests of the south-east part of Western Siberia (Tomsk Region)

2017 ◽  
Vol 74 (5) ◽  
pp. 854-861 ◽  
Author(s):  
Boris D. Kuranov ◽  
Oleg G. Nekhoroshev ◽  
Peter J. Mitchell ◽  
Sergey P. Milovidov
Keyword(s):  
Western Siberia ◽  
Pinus Sibirica ◽  
The South ◽  
East Part ◽  
Tomsk Region ◽  
Siberian Pine

DISTRIBUTION OF THE SMALL SPRUCE BARK BEETLE IPS AMITINUS (EICHHOFF, 1872) IN WESTERN SIBERIA

2021 ◽  
Vol 14 (4) ◽  
pp. 77-84
Author(s):  
I. A. Kerchev ◽  
S. A. Krivets ◽  
E. M. Bisirova ◽  
N. A. Smirnov
Keyword(s):  
Bark Beetle ◽  
Western Siberia ◽  
Pine Forests ◽  
Invasive Pest ◽  
Pinus Sibirica ◽  
Spruce Bark Beetle ◽  
Pine Nut ◽  
Spruce Bark ◽  
Pinus Sibirica Du Tour ◽  
Siberian Pine

The data on distribution of small spruce bark beetle Ips amitinus (Eichh.) (Coleoptera: Curculionidae: Scolytinae), a new invasive pest of European origin on the territory of Western Siberia are presented. Alien bark beetle species was recorded in the Siberian pine forests of the Tomsk, Kemerovo and Novosibirsk regions. According to the modern data the total invasion range is more than 30 thousand km² with a tendency to further expansion. The number outbreaks of I. amitinus in Siberian pine forests near settlements, in nature preservations and plantations of Pinus sibirica Du Tour cause significant harm to pine-nut harvesting and selective breeding.

scholarly journals A PRELIMINARY REPORT ON MITES (ACARI) ASSOCIATED WITH THE SMALL SPRUCE BARK BEETLE IPS AMITINUS (COLEOPTERA: CURCULIONIDAE: SCOLYTINAE) IN WESTERN SIBERIA

Acarina ◽  
2020 ◽  
Vol 28 (1) ◽  
pp. 39-46
Author(s):  
Alexander A. Khaustov ◽  
Ivan A. Kerchev
Keyword(s):  
Biological Control ◽  
Bark Beetle ◽  
Bark Beetles ◽  
Preliminary Report ◽  
Western Siberia ◽  
Pinus Sibirica ◽  
Spruce Bark Beetle ◽  
Spruce Bark ◽  
Siberian Pine

The small spruce bark beetle Ips amitinus has recently been found in two West Siberian regions: Tomsk and Kemerovo. Here, we collected and identified the mites associated with I. amitinus that naturally colonized branches and twigs of Siberian pine, Pinus sibirica, in Western Siberia, Russia. Five mites species were revealed: Dendrolaelaps quadrisetus (Digamasellidae), Proctolaelaps hystricoides (Melicharidae), Iponemus leionotum and I. asiaticus (Tarsonemidae), as well as Ereynetes (Huntereynetes) sp. (Ereynetidae). Interestingly, phoresy of two species of Iponemus was observed on one host beetle. Three of the five species are known predators and parasitoids of eggs or larvae of bark beetles and could be targeted for biological control of I. amitinus in Russia.

scholarly journals Accelerated formation of Siberian pine (Pinus sibirica Du Tour) stands: a case study from Siberia

2019 ◽  
Vol 65 (No. 8) ◽  
pp. 291-300
Author(s):  
Nikita Debkov
Keyword(s):  
Seed Production ◽  
Threshold Value ◽  
Pinus Sibirica ◽  
Natural Conditions ◽  
Normal Seed ◽  
Pine Trees ◽  
Pinus Sibirica Du Tour ◽  
Siberian Pine ◽  
Production Dynamics

Under natural conditions, Siberian pine Pinus sibirica begins to produce commercial cone yields of nuts relatively late (after more than 100 years). The aim of this study was to summarise the experience of the directed formation of Siberian pine forests in Siberia. Experimental objects included plots with traditional thinning of varying intensity and frequency as well as chemical treatment. We assessed the parameters of the stand and its seed production dynamics. Only stands with a minimum density (395–435 trees·ha–1) had a normal seed production energy (1.5 or more cones per shoot). Over-dense stands (830–930 trees·ha–1) were characterised by a low seed production energy (two times or more below the threshold value). In all plots, there were Siberian pine trees with absent or unacceptable seed production energy, which should be removed (DBH up to 28 cm). Seed production energy positively correlated with most tree parameters (age, height, diameter, volume, length and width of crown).

scholarly journals VEGETATION FEATURES OF TUNDRINSKY KEDROVY BOR AND ADJACENT SITES (BY MATERIALS FROM THE «TSARSKY» PROFILE, UROCHISHCHE TUNDRINSKY MATERIK, SREDNEOBSKAYA LOWLAND)

2020 ◽  
Author(s):  
V.N. Tyurin ◽  
◽  
D.V. Bogdanova ◽  
G.M. Kukurichkin ◽  
◽  
...  
Keyword(s):  
Protected Area ◽  
Nature Reserve ◽  
Pinus Sibirica ◽  
Vegetation Map ◽  
Territorial Unit ◽  
Siberian Pine

The vegetation map of the Tundrinsky kedrovy bor for a perspective object as a nature reserve are presented. The conducted analysis of territory along the «Tsarsky» profile reflected a compact allocation of useful near-village forests with siberian pine (Pinus sibirica), allowing them using as an integral territorial unit for a perspective protected area.

scholarly journals Geoactive Zones and the Structure of Plant Communities in Connection With New Discoveries in Space Geology

2021 ◽  
Vol 7 (1) ◽  
pp. 33-48
Author(s):  
M. Rogozin
Keyword(s):  
Pinus Sibirica ◽  
Comfort Zone ◽  
Space Images ◽  
Picea Obovata ◽  
Siberian Spruce ◽  
Large Trees ◽  
Ring Structures ◽  
Pinus Sibirica Du Tour ◽  
Siberian Pine ◽  
Geodynamic Activity

The purpose of the work is to find out how plants react to such zones and whether their phytoindication is possible. Two territories of the Perm territory were studied: the Vishersky Nature Reserve and forests near Perm. The research methodology included lineament and geostructurometric analysis of space images and special maps using ring structures discovered on the Earth’s surface by Yu. I. Fivenskii, as well as phyto- and bioindication of small geoactive zones. It was found that in the forests near Perm favorable zones of such zones occupy 1.44% of the territory and within their limits the safety of common pine (Pinus sylvestris L.) is 29–42 times higher. Phytoindication of small geoactive zones of 1.0 and 3.0 m by common pine was shown in the zones of influence of these zones: 0–18 cm — the radius of inhibition with the absence of trees; 19–29 cm — the depression zone with small trees; 30–48 cm — the comfort zone with medium and large trees. Two types of networks formed by zones of 1.0 and 8.0 m in size near Perm (on the plain) and in the reserve (in the mountains) were compared. In the mountains, with high geodynamic activity of territories, the networks are oriented in one direction, while on the plain their orientation is misaligned by 30°. In the reserve, large trees of Siberian spruce (Picea obovata Ledeb.) were located on small geoactive zones of 1.0 and 8.0 m, and trees of Siberian pine (Pinus sibirica Du Tour) — on zones 1.0 and 3.0 m in combination with zones 16, 32 and 55 m. In the subgolets zone, ring structures of perennial plants were also found on the first two types of zones. In addition, along the edges of the swamps, chains of trees were found whose direction coincides with ring faults, and the chains themselves are similar to the structure of small geoactive zones networks, and this fractality requires field verification. The hypothesis recharge of plants within geoactive zones is proposed, which also explains the successful growth of trees on rocks, where the amount of available soil is minimal.

scholarly journals THE NATURAL POTENTIAL OF REGENERATION IN FIR FORESTS, DAMAGED DURING THE INVASION OF POLYGRAPHUS PROXIMUS

2017 ◽  
Vol 7 (1) ◽  
pp. 58-68
Author(s):  
Дебков ◽  
Nikita Debkov
Keyword(s):  
Natural Regeneration ◽  
Western Siberia ◽  
Biological Diversity ◽  
Morphological Structure ◽  
Variable Density ◽  
Pinus Sibirica ◽  
Siberian Fir ◽  
Siberian Spruce ◽  
Polygraphus Proximus ◽  
The Impact

In the beginning of this century, the cases of invasions of dendrophilous insects becomes more often. The impact of invadors leads to the degradation of forest ecosystems and loss of natural biological diversity. The article discusses the invasion of Polygraphus proximus Blandf. in fir forests of Western Siberia. The aim of the research was to evaluate the potential of natural regeneration of fir forests in Western Siberia, damaged by Polygraphus proximus. Studies are conducted in the southern part of the Tomsk region at 11 test plots. Objects of research were both one breed fir trees, and grass communities of Siberian fir (Abies sibirica Ledeb.) with participation of Siberian pine (Pinus sibirica Du Tour), Siberian spruce (Picea obovata Ledeb.), silver birch (Betula pendula Roth) and aspen (Populus tremula L.). Surveyed plantations belonged to the ripening or ripe age states. The study of natural regeneration was carried out according to standard procedures. Method of transects was used. Measurements were subjected to basic morphological parameters of the undergrowth. The distribution of the natural regeneration area was estimated by calculating the ratio of occurrence and index of scattering. To assess the affinity of the undergrowth, micromosaic structure of the organization of communities was studied. Analysis of the size and morphological structure of natural regeneration have identified the degree of damage of forest stand and condition of the undergrowth. Dynamics of spatial structure is characterized by heterogeneity (index of dispersion exceeds 1). It indicates group location and its variable density. 82 % of teste plots were recorded with mortality of trees in the impact of Polygraphus proximus. In this case the bulk of the deceased undergrowth is from the major category (95 %), and only 5 % is the average undergrowth. The share of deceased major undergrowth was 9.9-50 %. There was a positive relationship between the number of mortality of trees and status category of fir forest. The number of damaged undergrowth in fir forests varies from 1.2 to 29.6 thousand units/ha. Predominant species is fir. Fir forests of Western Siberia, damaged by Polygraphus proximus, have potential of regeneration. Siberian fir will retain edificatoria value.

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