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

: материалы временных коллективов / I. L. Milyutina [и др.] // Boreal forests in a changing world: challenges and needs for action: Proceedings of the International conference August 15-21 2011, Krasnoyarsk, Russia. - Krasnoyarsk : V.N. Sukachev Institute of forest SB RAS, 2011. - С. 330-333. - Библиогр. в конце ст.
Аннотация: It was investigsted the effect of strong transpecifix competition on the activity of the antioxidant defence system and the content of y-aminobutyric acid (GABA) in the combial zone of 6-7-year old Scots pine undergrowth in biogroups with a stand density 1 trees ., m-2, 10 trees. m-2., 40 trees. m-2. It was established that with increasing of stand density the protective function of antioxidant system, the activity of ROS and the content of GABA in the cambial zone of trees were reduced.

Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок 50/28

Доп.точки доступа:
Milyutina, Inna Leonidovna; Милютина, Инна Леонидовна; Sudachkova, Nina Yevgen'yevna; Судачкова, Нина Евгеньевна; Romanova, Lyudmila Ivanovna; Романова, Людмила Ивановна; Deych, Kseniya Olegovna

/ T. M. Ovchinnikova [et al.] // Contemp. Probl. Ecol. - 2013. - Vol. 6, Is. 2. - P170-176, DOI 10.1134/S1995425513020133. - Cited References: 8. - This work was supported by the Russian Foundation for Basic Research (grant no. 10-04-00256). . - 7. - ISSN 1995-4255РУБ Ecology

Аннотация: Based on the concept of competition for resources, the distribution of trees upon reforestation in windfall areas is studied. As a theoretical model for competition, a Zipf-Pareto model of ranking the distribution of resources is used. Analysis shows that the processes resulting from competitive interactions between the trees of different species proceed slowly in a windfall area where coniferous species get replaced by deciduous ones. In the territory where deciduous species initially dominated, competitive interactions between trees of different species turn out to be formed almost immediately upon natural reforestation after the windfall. By the time the ratio of species stabilizes and becomes a steady state, the ranks of individual species also stabilize. This result is obtained on the basis of a quantitative assessment of the change in leadership between competing species in time using Spearman's rank correlation coefficient.

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Держатели документа:
[Ovchinnikova, T. M.
Sotnichenko, D. L.
Sukhovolskiy, V. G.] Russian Acad Sci, Siberian Branch, Sukachev Inst Forest, Krasnoyarsk 660036, Russia
[Mochalov, S. A.] Ural State Forestry Engn Univ, Ekaterinburg 620100, Russia

Доп.точки доступа:
Ovchinnikova, T.M.; Sotnichenko, D.L.; Mochalov, S.A.; Sukhovolskiy, V.G.

[Text] / T. . Kajimoto [et al.] // J. For. Res. - 2007. - Vol. 12, Is. 2. - P103-112, DOI 10.1007/s10310-006-0259-y. - Cited References: 49 . - 10. - ISSN 1341-6979РУБ Forestry

Аннотация: We present results of individual-based root system measurement and analysis applied for Larix gmelinii trees growing on the continuous permafrost region of central Siberia. The data of root excavation taken from the three stands were used for the analyses; young (26 years old), mature (105 years old), and uneven-aged over-mature stand (220 years old). In this article, we highlight two topics: (1) factors affecting spatio-temporal pattern of root system development, and (2) interactions between aboveground (i.e., crown) and belowground (i.e., root) competition. For the first topic, the detailed observation of lateral roots was applied to one sample tree of the overmature stand. The tree constructed a superficial (< 30 cm in depth) and rather asymmetric root system, and each lateral root expanded mainly into elevated mounds rather than depressed troughs. This indicated that spatial development of an individual root system was largely affected by microtopography (i.e., earth hummocks). For these lateral roots, elongation growth curves were reconstructed using annual-ring data, and annual growth rates and patterns were compared among them. The comparison suggested that temporal root system development is associated with differences in carbon allocation among the lateral roots. For the second topic, we examined relationships between individual crown projection area (CA) and horizontal rooting area (RA) for the sample trees of each stand. RA was almost equal to CA in the young stand, while RA was much larger (three or four times) than CA in the mature and overmature stands. Two measures of stand-level space occupation, crown area index (aboveground: CAI; sum of CAs per unit land area) and rooting area index (belowground: RAI; sum of RAs), were estimated in each stand. The estimates of RA1 (1.3-1.8 m(2) m(-2)) exceeded unity in all stands. In contrast, CAI exceeded unity (1.3 m(2) m(-2)) only in the young stand, and was much smaller (< 0.3 m(2) m(-2)) in the two older stands. These between-stand differences in RAI-CAI relationships suggest that intertree competition for both aboveground and belowground spaces occurred in the young stand, but only belowground competition still occurred in the two older stands. Based on this finding, we hypothesized that competition below the ground may become predominant as a stand ages in L. gmelinii forests. Methodological limitations of our analysis are also discussed, especially for the analysis using the two indices of space occupation (CAI, RAI).

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Держатели документа:
Forestry & Forest Prod Res Inst, Kyushu Res Ctr, Kumamoto 8600862, Japan
Ryukoku Univ, Fac Intercultural Commun, Otsu, Shiga, Japan
Forestry & Forest Prod Res Inst, Tsukuba, Ibaraki 305, Japan
Russian Acad Sci, VN Sukachev Inst Forest, Krasnoyarsk, Russia
Kyoto Univ, Fac Agr, Kyoto, Japan
Kyoto Univ, Field Sci Educ & Res Ctr, Kyoto, Japan
Okayama Univ, Grad Sch Environm Sci, Okayama 7008530, Japan

Доп.точки доступа:
Kajimoto, T...; Osawa, A...; Matsuura, Y...; Abaimov, A.P.; Zyryanova, O.A.; Kondo, K...; Tokuchi, N...; Hirobe, M...

[Текст] / O. P. Sekretenko, V. G. Sukhovolsky, O. V. Tarasova // Zhurnal Obshchei Biol. - 2002. - Vol. 63, Is. 4. - С. 351-360. - Cited References: 22 . - 10. - ISSN 0044-4596РУБ Biology

Аннотация: The authors analyze spatial distribution and survival of populations of poplar moth Litchcolletis populifoliella Tr on its feeding plant - balsam poplar Populus balsamifera Imago of the moth glue its eggs on the leaves thus determining the future location of their offspring on the host plant Spatial distribution of eggs on leaf surface and distribution of leaves according egg numbers are not random On the short distance from each egg the average number of eggs is less, than it should be in case of random distribution While this distance increases up to some particular value the occurrence of eggs is higher than random Thus, the eggs of moth are located by groups on the leaf surface Within each group eggs are situated not very close to each other, this allowing larvae to lower competition for common resource It is suggested that on the same feeding plant individuals have different interactions competition, caused by limited quantity of resource and cooperation that is necessary to resist leaf defensive (antibiosis) reaction.

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Держатели документа:
Russian Acad Sci, VN Sukachev Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Sekretenko, O.P.; Sukhovolsky, V.G.; Tarasova, O.V.

[Text] / O. V. Menyailo [et al.] // Biol. Fertil. Soils. - 2003. - Vol. 38, Is. 1. - P1-9, DOI 10.1007/s00374-003-0631-4. - Cited References: 23 . - 9. - ISSN 0178-2762РУБ Soil Science

Аннотация: Little information is available about the factors controlling soil C and N transformations in natural tropical forests and tree-based cropping systems. The aim of this work was to study the effects of single trees on soil microbiological activities from plantations of timber and non-timber species as well as species of primary and secondary forests in the Central Amazon. Soil samples were taken in the primary forest under Oenocarpus bacaba and Eschweilera spp., in secondary regrowth with Vismia spp., under two non-timber tree species (Bixa orellana L. and Theobroma grandiflorum Willd.), and two species planted for wood production (Carapa guianensis Aubl. and Ceiba pentandra). In these soils, net N mineralization, net nitrification, denitrification potential, basal and substrate-induced respiration rates were studied under standardized soil moisture and temperature conditions. Individual tree species more strongly affected N transformations, particularly net nitrification, than C respiration. Our results suggest that soil C respiration can be affected by tree species if inorganic N becomes a limiting factor. We found a strong correlation among almost all microbiological processes suggesting close inter-relationship between C and N transformations in the studied soils. Correlation analysis between soil chemical properties and microbiological activities suggest that such strong inter-relationships are likely due to competition between the denitrifying and C-mineralizing communities for NO3-, which might be an important N source for the microbial population in the studied soils.

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Держатели документа:
Russian Acad Sci, Inst Forest, Siberain Branch, Krasnoyarsk 660036, Russia
Univ Bayreuth, Inst Soil Sci & Soil Geog, D-95447 Bayreuth, Germany
EMBRAPA, BR-69011970 Manaus, Amazonas, Brazil

Доп.точки доступа:
Menyailo, O.V.; Lehmann, J...; Cravo, M.D.; Zech, W...

[Text] / M. V. Skomarkova [et al.] // Trees-Struct. Funct. - 2006. - Vol. 20, Is. 5. - P571-586, DOI 10.1007/s00468-006-0072-4. - Cited References: 55 . - 16. - ISSN 0931-1890РУБ Forestry

Аннотация: We investigated the variability of tree-ring width, wood density and C-13/C-12 in beech tree rings (Fagus sylvatica L.), and analyzed the influence of climatic variables and carbohydrate storage on these parameters. Wood cores were taken from dominant beech trees in three stands in Germany and Italy. We used densitometry to obtain density profiles of tree rings and laser-ablation-combustion-GC-IRMS to estimate carbon isotope composition (delta C-13) of wood. The sensitivity of ring width, wood density and delta C-13 to climatic variables differed; with tree-ring width responding to environmental conditions (temperature or precipitation) during the first half of a growing season and maximum density correlated with temperatures in the second part of a growing season (July-September). delta C-13 variations indicate re-allocation and storage processes and effects of drought during the main growing season. About 20% of inter-annual variation of tree-ring width was explained by the tree-ring width of the previous year. This was confirmed by delta C-13 of wood which showed a contribution of stored carbohydrates to growth in spring and a storage effect that competes with growth in autumn. Only mid-season delta C-13 of wood was related to concurrent assimilation and climate. The comparison of seasonal changes in tree-ring maximum wood density and isotope composition revealed that an increasing seasonal water deficit changes the relationship between density and C-13 composition from a negative relation in years with optimal moisture to a positive relationship in years with strong water deficit. The climate signal, however, is over-ridden by effects of stand density and crown structure (e.g., by forest management). There was an unexpected high variability in mid season delta C-13 values of wood between individual trees (-31 to -24 parts per thousand) which was attributed to competition between dominant trees as indicated by crown area, and microclimatological variations within the canopy. Maximum wood density showed less variation (930-990 g cm(-3) stop). The relationship between seasonal changes in tree-ring structure and C-13 composition can be used to study carbon storage and re-allocation, which is important for improving models of tree-ring growth and carbon isotope fractionation. About 20-30% of the tree-ring is affected by storage processes. The effects of storage on tree-ring width and the effects of forest structure put an additional uncertainty on using tree rings of broad leaved trees for climate reconstruction.

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Держатели документа:
Max Planck Inst Biogeochem, Jena, Germany
Russian Acad Sci, Inst Forest, SB, Krasnoyarsk 660036, Russia
Univ Calif Berkeley, ESPM Dept, Berkeley, CA 94720 USA

Доп.точки доступа:
Skomarkova, M.V.; Vaganov, E.A.; Mund, M...; Knohl, A...; Linke, P...; Boerner, A...; Schulze, E.D.

[Text] / V. L. Gavrikov, O. P. Sekretenko // Ecol. Model. - 1996. - Vol. 88, Is. 01.03.2013. - P183-193, DOI 10.1016/0304-3800(95)00087-9. - Cited References: 24 . - 11. - ISSN 0304-3800РУБ Ecology

Аннотация: The aim of the research was to create an algorithm simulating height-diameter relations in a pine tree subjected to various environmental impacts. The model is based on explicit description of light competition of the Scots pine twigs in three-dimensional space. The model is empirical and results from the measurements of correlations between shoots and buds in Scots pine that were made in the field. The development of the root system is not considered by the model. In simulation experiments it was demonstrated that: (i) the stand-grown pines have a higher height/diameter ratio than an open-grown model tree; (ii) an extremely high height/diameter ratio leads the tree to death; (iii) a tree suppressed for a sufficiently long time does not respond to better conditions; (iv) the diameter growth is much more sensitive to environmental change than the height growth. The model trees had the same growth parameters in every simulation. The simulated growth reactions are accounted for by self-adjustments of the model structure to the imposed conditions.

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Держатели документа:
RUSSIAN ACAD SCI,INST FOREST,KRASNOYARSK 660036,RUSSIA

Доп.точки доступа:
Gavrikov, V.L.; Sekretenko, O.P.

/ N. Kirichenko [et al.] // European Journal of Forest Research. - 2011. - Vol. 130, Is. 6. - P1067-1074, DOI 10.1007/s10342-011-0495-3 . - ISSN 1612-4669
Аннотация: The Siberian moth, Dendrolimus sibiricus, Tschtv. is the most harmful defoliator of coniferous forests in North Asia. The pest has already spread over the Urals and continues moving westwards. Recently, it has been recommended for quarantine in member countries by European and Mediterranean Plant Protection Organization (EPPO). The performances of the pest on coniferous species planted in Europe were assessed on a range of potted trees corresponding to the spectrum of economically important conifers in the EU: European larch Larix decidua, Norway spruce Picea abies, Scots pine Pinus sylvestris, European black pine Pinus nigra, and the North American species: Douglas fir Pseudotsuga menziesii and grand fir Abies grandis. Larvae showed a potential to survive and complete the development on all these host tree species. Favorable hosts were grand fir, European larch, and Douglas fir that allowed higher survival, better larval development, and as a result, yielded heavier pupae and adult moths with higher longevity. Black pine was a poor host but, however, could still support larval and pupal development. Norway spruce and Scots pine had an intermediate behavior. If accidentally introduced to Europe, the Siberian moth may become especially damaging in forest stands predominated by European larch and by the North American firs. Norway spruce and especially the two-needle pines will be less prone to intensive defoliation by this species. The fact that the pest may damage the range of economically important coniferous species should be taken into account in the pest risk assessment for Europe and also for North America where the Siberian moth occurrence is considered likely. В© 2011 Springer-Verlag.

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Держатели документа:
Department of Forest Zoology, V. N. Sukachev Institute of Forest SB RAS, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Lutte biologique et Ecologie spatiale (LUBIES), Universite Libre de Bruxelles, CP 160/12, av. F. D. Roosevelt 50, 1050 Bruxelles, Belgium

Доп.точки доступа:
Kirichenko, N.; Flament, J.; Baranchikov, Y.; Gregoire, J.-C.

/ V. I. Kharuk, K. J. Ranson, M. L. Dvinskaya // Geophysical Research Letters. - 2008. - Vol. 35, Is. 1. - Ст. L01402, DOI 10.1029/2007GL032291 . - ISSN 0094-8276
Аннотация: A fire return intervals (FRI) for zone of larch dominance and "larch-mixed taiga" ecotone was studied. Extreme fire events were connected with summer air temperature deviations. Average FRI determined from stem fire scar dating was 82 В± 7 years for the zone of larch dominance, and 77 В± 20 for the "larch-mixed taiga" ecotone. For the zone of larch dominance FRI on north-east facing slopes was 86 В± 11 years, for south-west facing slopes at 61 В± 8 years, for flat terrain at 68 В± 14 years, and for bogs 139 В± 17 years. FRI decreased from 101 years in the 19th century to 65 years in the 20th century, for the zone of larch dominance, and from 97 years to 50 years for the "larch-mixed taiga" ecotone. A climate and anthropogenic impact on this phenomenon was analyzed. The decrease of FRI may interfere with climate-driven migration of competitor species into zone of larch dominance, affecting biodiversity at high latitudes. Copyright 2008 by the American Geophysical Union.

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Держатели документа:
V. N. Sukachev Institute of Forest, Krasnoyarsk 60036, Russian Federation
NASA Goddard Space Flight Center, Greenbelt, MD 20771, United States

Доп.точки доступа:
Kharuk, V.I.; Ranson, K.J.; Dvinskaya, M.L.

/ M. T. Nadezda, E. R. Gerald, I. P. Elena // Mitigation and Adaptation Strategies for Global Change. - 2006. - Vol. 11, Is. 4. - P861-882, DOI 10.1007/s11027-005-9019-0 . - ISSN 1381-2386
Аннотация: Inter- and intraspecific effects of climate change were assessed for the dominant conifers of Siberia (60-140В°E and 48-75В°N): Larix spp. (L. sibirica, L. dahurica, and L. sukaczewii) and Pinus sylvestris . The approach employed a tri-variate (degree-days above 5В°C, degree-days below 0В°C, and a moisture index) estimate of the climatic envelope within which exists the actual ecological distribution of a species and their constituent climatypes (genotypes physiologically attuned to similar environments). Limits of the actual ecological distribution were approximated by reducing the climatic envelope according to effects of permafrost and interspecific competition. Climatypes were mapped within the climatic envelope according to the climatic interval that must separate populations for reasonable assurance of genetic differentiation. This interval was calculated from response functions that related 13-year growth and survival of a species to the difference in climate between the provenance of a climatype and the climate of numerous test sites distributed across Russia. Mapping species' distributions and their climatypes was done for the contemporary climate and for future climates predicted by the HadCM3GGa1 scenario of Hadley Centre. The results showed that if the forests of the future are to reflect the adaptedness of today, the distribution of species will shift and genotypes within species will be redistributed. Some contemporary climatypes are projected to disappear from Siberia while others common elsewhere would evolve. To mitigate these effects, climatypes should be transferred today to the expected future location of their climatic optima, a distance that is likely to approach 700-1200 km for these species. В© Springer 2005.

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Держатели документа:
V.N. Sukachev Institute of Forest, Siberian Branch, Russian Academy of Sciences, Academgorodok, 660036 Krasnoyarsk, Russian Federation
USDA Forest Service, Rocky Mountain Research Station, Forestry Sciences Laboratory, 1221 S. Main, Moscow, ID 83843, United States

Доп.точки доступа:
Nadezda, M.T.; Gerald, E.R.; Elena, I.P.

/ V. G. Soukhovolsky, T. R. Iskhakov // Doklady Biochemistry and Biophysics. - 2004. - Vol. 399, Is. 1-6. - P380-382, DOI 10.1007/s10628-005-0014-x . - ISSN 1607-6729

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Держатели документа:
Sukachev Institute of Forestry, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Faculty of Physics, Krasnoyarsk State University, Krasnoyarsk, 660062, Russian Federation

Доп.точки доступа:
Soukhovolsky, V.G.; Iskhakov, T.R.

/ T. R. Iskhakov, V. G. Soukhovolsky // Doklady Biochemistry and Biophysics. - 2004. - Vol. 399, Is. 1-6. - P365-367, DOI 10.1007/s10628-005-0009-7 . - ISSN 1607-6729

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Держатели документа:
Krasnoyarsk State University, Krasnoyarsk, 660062, Russian Federation
Sukachev Institute of Forestry, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Iskhakov, T.R.; Soukhovolsky, V.G.

/ V. G. Sukhovol'skii, R. G. Khlebopros, T. R. Iskhakov // Doklady. Biochemistry and biophysics. - 2003. - Vol. 390. - P171-173 . - ISSN 1607-6729

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Держатели документа:
Sukachev Institute of Forest, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036 Russia.

Доп.точки доступа:
Sukhovol'skii, V.G.; Khlebopros, R.G.; Iskhakov, T.R.

/ O. V. Menyailo [et al.] // Isotopes in Environmental and Health Studies. - 2003. - Vol. 39, Is. 1. - P41-52, DOI 10.1080/1025601031000096745 . - ISSN 1025-6016
Аннотация: The use of stable isotopes of N and O in N2O has been proposed as a way to better constrain the global budget of atmospheric N2O and to better understand the relative contributions of the main microbial processes (nitrification and denitrification) responsible for N2O formation in soil. This study compared the isotopic composition of N2O emitted from soils under different tree species in the Brazilian Amazon. We also compared the effect of tree species with that of soil moisture, as we expected the latter to be the main factor regulating the proportion of nitrifier- and denitrifier, derived N2O and, consequently, isotopic signatures of N2O. Tree species significantly affected ?15N in nitrous oxide. However, there was no evidence that the observed variation in ?15N in N2O was determined by varying proportions of nitrifier- vs. denitrifier-derived N2O. We submit that the large variation in ?15N-N2O is the result of competition between denitrifying and immobilizing microorganisms for NO-3. In addition to altering ?15N-N2O, tree species affected net rates of N2O emission from soil in laboratory incubations. These results suggest that tree species contribute to the large isotopic variation in N2O observed in a range tropical forest soils. We found that soil water affects both 15N and 18O in N2O, with wetter soils leading to more depleted N2O in both 15N and 18O. This is likely caused by a shift in biological processes for 15N and possible direct exchange of 18O between H2O and N2O.

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Держатели документа:
Institute of Forest SB RAS, Krasnoyarsk, Russian Federation
Department of Biological Sciences, Merriam-Powell Ctr. for Environ.Res., Northern Arizona University, Flagstaff, United States
Department of Soil Sci./Soil Geogr., University of Bayreuth, Bayreuth, Germany
Department of Plant Ecology, University of Bayreuth, Bayreuth, Germany

Доп.точки доступа:
Menyailo, O.V.; Hungate, B.A.; Lehmann, J.; Gebauer, G.; Zech, W.

/ V. G. Sukhovolsky // Zhurnal Obshchei Biologii. - 1997. - Vol. 58, Is. 5. - С. 87-88 . - ISSN 0044-4596
Аннотация: Optimisation approach used to describe tree growth supposes the allocation of resources for different ecological and physiological functions: photosynthesis, absorption and transport of substances, wind protection, etc. The author suggests a theoretical model that describes the distribution of mass for tree fractions and compares the model and experimental measurements of biomass of different fractions. The distribution of biomass can be described with the Zipf-Pareto equation of free competition. The method to evaluate the root biomass using the data on above-ground biomass of tree is proposed. The relations of equations used to describe the free competition and allometric growth were studied. It was shown that allometric equations can be derived from the equation of free competition under some special conditions.

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Держатели документа:
V.N. Sukachev's Institute of Forest, Russian Academy of Science, Siberian Branch, Akademgorodok, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Sukhovolsky, V.G.

[Text] / A. P. Abaimov, M. A. Sofronov // Russ. J. Ecol. - 1997. - Vol. 28, Is. 4. - P221-223. - Cited References: 21 . - 3. - ISSN 1067-4136РУБ Ecology

Аннотация: Correctness in delimiting the belt of protective tundra forests along the southern boundary of the zonal tundra in Russia is analyzed. Forest communities of high latitudes formed on permafrost are regarded as an independent type of vegetation. Competition for root space, rather than for Light (as in taiga forests), plays a dominant role in their formation. In determining the southern boundary of tundra forests, it is recommended to use an ecosystems approach, including in this zone the entire latitudinal series of forest ecosystems into which animals regularly migrate from tundra for wintering.

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Доп.точки доступа:
Abaimov, A.P.; Sofronov, M.A.

[Текст] / L. V. NEDOREZOV, A. N. OMAROV // Zhurnal Obshchei Biol. - 1989. - Vol. 50, Is. 6. - С. 746-751. - Cited References: 14 . - 6. - ISSN 0044-4596РУБ Biology


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Доп.точки доступа:
NEDOREZOV, L.V.; OMAROV, A.N.

/ A. Genet [et al.] // Ecol. Model. - 2014. - Vol. 288. - P143-154, DOI 10.1016/j.ecolmodel.2014.06.002 . - ISSN 0304-3800
Аннотация: The spatial structure of complex forest stands results from competitive interactions among trees which is one of the most important ecological processes influencing forest development. The aim of the study is to incorporate in a new class of random point process models a coherent representation of the competition process driving forest stand dynamics to establish a direct link between pattern and ecological processes. The resulting area-saturation model was defined by a set statistic characterised by overlapping discs representing tree interactions. Unlike previous approaches, this new spatial model has the advantage of allowing a straightforward interpretation of its parameters in terms of inter-tree competition. A 60. m. ?. 60. m plot of even-aged Scots pines was used to illustrate the potential of this approach in modelling the spatial structure of a plant community. The social status of each tree was taken into account, leading to a multivariate point pattern exhibiting various spatial properties (regularity, clustering and randomness) at different scales. We considered a hierarchical structure of interactions to account for the fact that competition for light is size-asymmetric. According to the analysis, the generalised area-saturation model has the required flexibility to capture complex spatial tree patterns. © 2014 Elsevier B.V.

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Держатели документа:
Centre d' etude de la foret, Departement des sciences du bois et de la foret, Pavillon Abitibi-Price, Universite Laval, 2405 rue de la Terrasse, Quebec, QC G1V 0A6, Canada
Institute of Physico-Chemical and Biological Problems in Soil Science, Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russian Federation
Sukachev Institute of Forest, Siberian Branch of Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Genet, A.; Grabarnik, P.; Sekretenko, O.; Pothier, D.

[Text] / O. V. Menyailo [et al.] // Russ. J. Ecol. - 2015. - Vol. 46, Is. 2. - P152-156, DOI 10.1134/S1067413615020071. - Cited References:15. - This study was supported by the Russian Foundation for Basic Research, project no. 10-04-92518-IK_a. . - ISSN 1067-4136. - ISSN 1608-3334РУБ Ecology

Аннотация: Seasonal dynamics of CO2 efflux from gray forest soil have been studied using collars inserted to different depths in order to estimate the contributions and interaction of soil autotrophs and heterotrophs. The depth of collar insertion has proved to have an effect on CO2 efflux only in periods of the highest biological activity. It has also been shown for the first time that the level of competition between soil autotrophs and heterotrophs depends mainly on tree species rather than on soil type.

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Держатели документа:
Russian Acad Sci, Sukachev Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia.
Moscow MV Lomonosov State Univ, Soil Sci Dept, Moscow 119991, Russia.
ИЛ СО РАН

Доп.точки доступа:
Menyailo, O.V.; Matvienko, A.I.; Stepanov, A.L.; Makarov, M.I.; Russian Foundation for Basic Research [10-04-92518-IK_a]

/ V. Shishov [et al.] // International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM. - 2015. - Vol. 2: 15th International Multidisciplinary Scientific Geoconference and EXPO, SGEM 2015 (18 June 2015 through 24 June 2015, ) Conference code: 153969, Is. 3. - P537-544 . -
Аннотация: Tree-ring chronologies (dendrochronological time series) are an important proxy source for oblique high-resolution information about climate and environmental changes in the past and present. Often the time series signals are associated with direct external periodic forcing (e.g., annual irradiance, seasonal moisture regimes, etc.), or with the internal oscillations within biological systems themselves (e.g., age-dependent trends, components of competition, etc). In most cases, the observed signal is interpreted as superposition of different internal and external influences. In most cases due to unstable frequency, amplitude and phase of analyzed signals the significance of power spectrum peaks may be tested by the “red-noise” null hypothesis, with a number of additional assumptions concerning possible causes for the observed instability. The goal of this paper is to verify information losses in the case of testing a power spectrum by the “white-noise” null hypothesis in order to detect significant cycles in dendrochronological time series. The new approach described herein allows us to (1) obtain an adequate spectral decomposition of different tree-ring chronologies; (2) analyze spatial comparisons of different time series, specifying possible causes for disagreement; and (3) build new long-term reconstructions of different climatic series by different cyclical components. Moreover, the approach helps to extend super long-term tree-ring chronologies by low-frequency components, to verify temporal periods in the past for which there are no good statistical estimations, which will enable extension of existing climatic reconstructions. © SGEM2015.

Scopus

Держатели документа:
Siberian Federal University, Krasnoyarsk, Russian Federation
Sukachev Institute of Forest, SB RAS, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Shishov, V.; Ovchinnikov, D.; Koiupchenko, I.; Tychkov, I.; Ovchinnikov, S.