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

: материалы временных коллективов / K. Takayoshi, K. Satoshi, O. V. Masyagina // Eurasian Journal of Forest Research. - 2007. - Vol. 10-1. - С. 115-119. - Библиогр. в конце ст.
Аннотация: Dynamics of nitrogen in leaves of trees and seedlings of deciduous broad-leaf species were studied for improving forest management. The photosynthetic traits of canopy leaves of diciduous broad-leaved trees were measured using a canopy tower. There was a clear positive correlation between leaf nitrogen content and light saturated photosynthetic rate at sunny canopy. As reflecting the shoot development pattern, leaf senescence began from the inner part of the crown in early successional species, by contrast leaf senescence process commences from either the outer or top portion of the crown in late successional species. For regenerated seedlings in forest floor, seasonal change in the allocation pattern of leaf nitrogen coincided with the changing of light conditions through the leaf phenology of upper canopy. In light limited condition, nitrogen was allocated to chlorophyll while it allocated to more to photosynthetic carbon fixation, i.e. Rubisco in strong light condition. Nitrogen allocated was affected more by light to CO2 condition that was found in birch and beech seedlings with a FACE system.

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

Доп.точки доступа:
Takayoshi, K.; Такаёши К.; Satoshi, K.; Сатоши К.; Masyagina, Oksana Viktorovna; Масягина, Оксана Викторовна
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[Text] / Y. . Yohannes [et al.] // For. Ecol. Manage. - 2011. - Vol. 261, Is. 6. - P1090-1098, DOI 10.1016/j.foreco.2010.12.032. - Cited References: 56. - We would like to thank Deutsche Forschungsgesellschaft (DFG) for financial support of the study within the project package PAK 188. We thank Deksiso Bulcha, Getu Tadesse, Temesgen Yohannes, Abule Loya, and Awol Assefa for their assistance and support in collecting data in the field. We also thank Roger-Michael Klatt, Ulrike Pieper, Pieter Wiese and Holger Ciglasch for their laboratory assistance in soil analysis. Likewise we are grateful to Frank Schaarschmidt and Hany El Kateb for their advice in statistical analysis. . - 9. - ISSN 0378-1127РУБ Forestry

Аннотация: Variability of soil CO2 efflux strongly depends on soil temperature, soil moisture and plant phenology. Separating the effects of these factors is critical to understand the belowground carbon dynamics of forest ecosystem. In Ethiopia with its unreliable seasonal rainfall, variability of soil CO2 efflux may be particularly associated with seasonal variation. In this study, soil respiration was measured in nine plots under the canopies of three indigenous trees (Croton macrostachys, Podocarpus falcatus and Prunus africana) growing in an Afromontane forest of south-eastern Ethiopia. Our objectives were to investigate seasonal and diurnal variation in soil CO2 flux rate as a function of soil temperature and soil moisture, and to investigate the impact of tree species composition on soil respiration. Results showed that soil respiration displayed strong seasonal patterns, being lower during dry periods and higher during wet periods. The dependence of soil respiration on soil moisture under the three tree species explained about 50% of the seasonal variability. The relation followed a Gaussian function, and indicated a decrease in soil respiration at soil volumetric water contents exceeding a threshold of about 30%. Under more moist conditions soil respiration is tentatively limited by low oxygen supply. On a diurnal basis temperature dependency was observed, but not during dry periods when plant and soil microbial activities were restrained by moisture deficiency. Tree species influenced soil respiration, and there was a significant interaction effect of tree species and soil moisture on soil CO2 efflux variability. During wet (and cloudy) period, when shade tolerant late successional P. falcatus is having a physiological advantage, soil respiration under this tree species exceeded that under the other two species. In contrast, soil CO2 efflux rates under light demanding pioneer C. macrostachys appeared to be least sensitive to dry (but sunny) conditions. This is probably related to the relatively higher carbon assimilation rates and associated root respiration. We conclude that besides the anticipated changes in precipitation pattern in Ethiopia any anthropogenic disturbance fostering the pioneer species may alter the future ecosystem carbon balance by its impact on soil respiration. (C) 2010 Elsevier B.V. All rights reserved.

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[Yohannes, Yonas
Shibistova, Olga
Abate, Asferachew
Guggenberger, Georg] Leibniz Univ Hannover, Inst Soil Sci, D-30419 Hannover, Germany
[Yohannes, Yonas] Ethiopian Inst Agr Research, Forestry Res Ctr, Addis Ababa, Ethiopia
[Shibistova, Olga] SB RAS, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia
[Fetene, Masresha] Univ Addis Ababa, Dept Biol, Addis Ababa, Ethiopia

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Yohannes, Y...; Shibistova, O...; Abate, A...; Fetene, M...; Guggenberger, G...

[Text] / Y. . Nakai [et al.] // Theor. Appl. Climatol. - 2008. - Vol. 93, Is. 03.04.2013. - P133-147, DOI 10.1007/s00704-007-0337-x. - Cited References: 47. - We gratefully thank V. Borovikov and other colleagues of the Sukachev Institute of Forest and the Evenki Forest Management Agency in Tura for their support with logistics and instrumentation. We also thank T. Yorisaki, H. Tanaka, and the staff of "Climatec Inc.'' for system integration and instrumentation. We acknowledge Y. Ohtani, Y. Yasuda, and T. Watanabe for providing software resources. N. Saigusa encouraged us greatly. This research was supported by the "Global environment research fund S-1'', as "Integrated Study for Terrestrial Carbon Management of Asia in the 21th Century based on Scientific Advancements (FY2002-2006)''. . - 15. - ISSN 0177-798XРУБ Meteorology & Atmospheric Sciences

Аннотация: Gmelin larch ( Larix gmelinii) forests are representative vegetation in the continuous permafrost region of Central Siberia. Information on the carbon budget is still limited for this Siberian larch taiga in comparison to boreal forests in other regions, while the larch forests are expected to play a key role in the global carbon balance due to their wide distribution over North-East Eurasia. The authors reported results of eddy covariance CO2 flux measurements at a mature Gmelin larch stand in Central Siberia, Russia (64 degrees 16'N, 100 degrees 12'E, 250m a.s.l.). The measurements were conducted during one growing season (June-early September in 2004). CO2 uptake was initiated in early June and increased sharply until late June, which was closely related to the phenology of the larch trees (i.e., bud-break and needle flush). Maximum half-hourly net CO2 uptake was similar to 6 mu mol m(-2) s(-1). Maximum daily net uptake of similar to 2 g C m(-2) day(-1) occurred at the end of June and in mid-July. Cumulative net uptake was 76-78 g C m(-2), indicating that the mature larch forest acted as a net sink for CO2 during the growing season (91 days). In comparison with other boreal forests, however, the magnitude of net CO2 uptake and night-time release of the forest, and cumulative net CO2 uptake were lower. We suggest that lower net ecosystem CO2 uptake of the study stand was primarily associated with low leaf area index.

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[Nakai, Y.] Forestry & Forest Prod Res Inst, Dept Meteorol Environm, Tsukuba, Ibaraki 3058687, Japan
[Kajimoto, T.] Forestry & Forest Prod Res Inst, Kyushu Res Ctr, Kumamoto, Japan
[Abaimov, A. P.
Zyryanova, O. A.] Russian Acad Sci, Siberian Branch, VN Sukachev Inst Forest, Krasnoyarsk, Russia
[Yamamoto, S.] Okayama Univ, Okayama, Japan

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Nakai, Y...; Matsuura, Y...; Kajimoto, T...; Abaimov, A.P.; Абаимов Анатолий Платонович; Yamamoto, S...; Zyryanova, O.A.

[Text] / A. . Arneth [et al.] // Biogeosciences. - 2006. - Vol. 3, Is. 4. - P421-437. - Cited References: 67 . - 17. - ISSN 1726-4170РУБ Ecology + Geosciences, Multidisciplinary

Аннотация: We compare assimilation and respiration rates, and water use strategies in four divergent ecosystems located in cold-continental central Siberia and in semi-arid southern Africa. These seemingly unrelated systems have in common a harsh and highly seasonal environment with a very sharp transition between the dormant and the active season, with vegetation facing dry air and soil conditions for at least part of the year. Moreover, the northern high latitudes and the semi-arid tropics will likely experience changes in key environmental parameters (e.g., air temperature and precipitation) in the future; indeed, in some regions marked climate trends have already been observed over the last decade or so. The magnitude of instantaneous or daily assimilation and respiration rates, derived from one to two years of eddy covariance measurements in each of the four ecosystems, was not related to the growth environment. For instance, respiration rates were clearly highest in the two deciduous systems included in the analysis (a Mopane woodland In northern Botswana and a Downy birch forest in Siberia; 300mmol m(-2) d(-1)), while assimilation rates in the Mopane woodland were relatively similar to a Siberian Scots pine canopy for a large part of the active season (ca. 420 mmol m(-2) d(-1)). Acknowledging the limited number of ecosystems compared here, these data nevertheless demonstrate that factors like vegetation type, canopy phenology or ecosystem age can override larger-scale climate differences in terms of their effects on carbon assimilation and respiration rates. By far the highest rates of assimilation were observed in Downy birch, an early successional species. These were achieved at a rather conservative water use, as indicated by relatively low levels of lambda the marginal water cost of plant carbon gain. Surprisingly, the Mopane woodland growing in the semi-arid environment had significantly higher values of lambda However, its water use strategy included a very plastic response to intermittently dry periods, and values of lambda were much more conservative overall during a rainy season with low precipitation and high air saturation deficits. Our comparison demonstrates that forest ecosystems can respond very dynamically in terms of water use strategy, both on interannual and much shorter time scales. But it remains to be evaluated whether and in which ecosystems this plasticity is mainly due to a short-term stomatal response, or alternatively goes hand in hand with changes in canopy photosynthetic capacity.

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Держатели документа:
Lund Univ, Dept Phys Geog & Ecosyst Anal, S-22363 Lund, Sweden
Max Planck Inst Biogeochem, D-07701 Jena, Germany
Univ Wageningen & Res Ctr, Nat Conservat & Plant Ecol Grp, Wageningen, Netherlands
Univ Tuscia, Viterbo, Italy
Int Inst Geoinformat Sci & Earth Observat, Enschede, Netherlands
VN Sukachev Forest Inst, Krasnoyarsk 660036, Russia

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Arneth, A...; Veenendaal, E.M.; Best, C...; Timmermans, W...; Kolle, O...; Montagnani, L...; Shibistova, O...

/ M. Y. Chernetskiy, A. P. Shevyrnogov, N. F. Ovchinnikova // Proceedings of SPIE - The International Society for Optical Engineering. - 2011. - Vol. 8174: Remote Sensing for Agriculture, Ecosystems, and Hydrology XIII (19 September 2011 through 21 September 2011, Prague) Conference code: 87191. - Ст. 1, DOI 10.1117/12.896748 . -
Аннотация: The time series of various parameters of satellite imagery (NDVI/EVI, temperature) during the growing season were considered in this work. This means that satellite images were considered not like a number of single scenes but like temporal sequences. Using time series enables estimating the integral phenological properties of vegetation. The basis of the developed technique is to use one of the methods of transformation of the multidimensional space in order to get the principal components. The technique is based on considering each dimension of the multidimensional space as satellite imagery for a specific date range. The technique automatically identifies spatial patterns of vegetation that are similar by phenology and growing conditions. Subsequent analysis allowed identification of the belonging of derived classes. Thus, the technique of revealing the spatial distribution of different dynamical vegetation patterns based on the phenological characteristics has been developed. The technique is based on a transformation of the multidimensional space of states of vegetation. Based on the developed technique, areas were obtained with similar interannual trends. В© 2011 SPIE.

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Держатели документа:
Institute of Biophysics of SB RAS, Krasnoyarsk 660036, Akademgorodok, Russian Federation
V.N. Sukachev Institute of Forest of SB RAS, Krasnoyarsk 660036, Akademgorodok, Russian Federation
Siberian Federal University, Kyrensky st., 26, Krasnoyarsk, 660074, Russian Federation

Доп.точки доступа:
Chernetskiy, M.Y.; Shevyrnogov, A.P.; Ovchinnikova, N.F.

/ Ye. V. Fedotova [et al.] // Mapping Sciences and Remote Sensing. - 2000. - Vol. 37, Is. 1. - P55-65 . - ISSN 0749-3878
Аннотация: A team of Russian forestry scientists examines the applicability of NOAA/ AVHRR satellite imagery in further development of methods for mapping forested areas. Summertime images processed in IDRISI for an area bounded by 48В° and 71В°N and 86В° and 98В°E were analyzed. The accuracy of automated supervised classification maps (maximum likelihood method) was tested by comparison with conventional maps at a wide variety of scales. Special emphasis is placed on examining prospects for expanded use of NOAA/AVHRR imagery in solving problems related to global climate change: displacement of vegetation zones, change in forest productivity, and phenology of forest vegetation development.

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Держатели документа:
Forestry Ins., Siberian Section, Russian Academy of Sciences, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Fedotova, Ye.V.; Burenina, T.A.; Kharuk, V.I.; Sukhinin, A.I.

/ V. I. Kharuk, A. M. Alshansky, V. V. Yegorov // International Journal of Remote Sensing. - 1992. - Vol. 13, Is. 17. - P3263-3272 . - ISSN 0143-1161
Аннотация: The dependence of spectral diffuse reflectance coefficients on the phenology of tree stands, observation and illumination conditions, ratio of scattered and total radiation was studied on a special testing ground by an automated system. The experimental dependences obtained for high density stands are satisfactorily described on the basis of the turbid layer theory (Ross-Nilson-Kuusk model). -Authors

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Держатели документа:
V.N. Sukachev Inst. of Forest & Wood, USSR Academy of Sciences, Siberian Branch, 660036 Krasnoyarsk, Russian Federation.

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Kharuk, V.I.; Alshansky, A.M.; Yegorov, V.V.

/ M. V. Skomarkova [et al.] // Geogr. Nat. Resour. - 2009. - Vol. 30, Is. 2. - P167-172, DOI 10.1016/j.gnr.2009.06.014 . - ISSN 1875-3728
Аннотация: Presented are the dendroclimatic research results on annual growth rings of spruce, fir, pine, birch and aspen growing in the middle taiga subzone of Central Siberia. The study established the general annual growth ring variability patterns for the conifers (spruce and fir) as well as for the hardwoods (birch and aspen), with the correlation coefficients between their chronologies estimated at 0.38 and 0.46 (p < 0.001), respectively. It is shown that under the given conditions the influence of the climatic factors accounts not more than for 53.5% of the variability in radial increment. For pine this influence is less clearly pronounced because of the content of the more mixed (compared with the other species of this territory) climatic signal. It is found that the temperature conditions of June are of first importance for all species under investigation. For birch and aspen the dependence of radial increment on the amount of precipitation in June is explained by moisture depletion at the period of the most active growth. В© 2009.

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Держатели документа:
Institute of Forest SB RAS, Siberian Federal University, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Max Planck Institute for Biogeochemistry, Max Planck Society, Jena, Germany

Доп.точки доступа:
Skomarkova, M.V.; Vaganov, E.A.; Wirth, C.; Kirdyanov, A.V.

/ U. Buntgen [et al.] // J. Ecol. - 2015. - Vol. 103, Is. 2. - P489-501, DOI 10.1111/1365-2745.12361 . - ISSN 0022-0477
Аннотация: Summary: The effects of climate change on Arctic ecosystems can range between various spatiotemporal scales and may include shifts in population distribution, community composition, plant phenology, primary productivity and species biodiversity. The growth rates and age structure of tundra vegetation as well as its response to temperature variation, however, remain poorly understood because high-resolution data are limited in space and time. Anatomical and morphological stem characteristics were recorded to assess the growth behaviour and age structure of 871 dwarf shrubs from 10 species at 30 sites in coastal East Greenland at 70°N. Recruitment pulses were linked with changes in mean annual and summer temperature back to the 19th century, and a literature review was conducted to place our findings in a pan-Arctic context. Low cambial activity translates into estimated average/maximum plant ages of 59/204 years, suggesting relatively small turnover rates and stable community composition. Decade-long changes in the recruitment intensity were found to lag temperature variability by 2 and 6 years during warmer and colder periods, respectively (r = 0.851961-2000 and 1881-1920). Synthesis. Our results reveal a strong temperature dependency of Arctic dwarf shrub reproduction, a high vulnerability of circumpolar tundra ecosystems to climatic changes, and the ability of evaluating historical vegetation dynamics well beyond the northern treeline. The combined wood anatomical and plant ecological approach, considering insights from micro-sections to community assemblages, indicates that model predictions of rapid tundra expansion (i.e. shrub growth) following intense warming might underestimate plant longevity and persistence but overestimate the sensitivity and reaction time of Arctic vegetation. Our results reveal a strong temperature dependency of Arctic dwarf shrub reproduction, a high vulnerability of circumpolar tundra ecosystems to climatic changes, and the ability of evaluating historical vegetation dynamics well beyond the northern treeline. The combined wood anatomical and plant ecological approach, considering insights from microsections to community assemblages, indicates that model predictions of rapid tundra expansion (i.e. shrub growth) following intense warming might underestimate plant longevity and persistence but overestimate the sensitivity and reaction time of Arctic vegetation.

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Держатели документа:
Swiss Federal Research Institute WSL, Zurcherstr 111Birmensdorf, Switzerland
Oeschger Centre for Climate Change Research OCCR, Zahringerstr 25Bern, Switzerland
Global Change Research Centre AS CR, v.v.i., Belidla 986/4aBrno, Czech Republic
Chair of Forest Growth IWW, Freiburg University, Tennenbacherstr 4Freiburg, Germany
Department of Bioscience, University of Aarhus, Ny Munkegade 116Aarhus C, Denmark
Arctic Research Centre, Aarhus University, C.F. Mollers Alle 8, bldg 1110Aarhus C, Denmark
School of GeoSciences, University of Edinburgh, West Mains RoadEdinburgh, United Kingdom
V.N. Sukachev Institute of ForestAkademgorodok, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Buntgen, U.; Hellmann, L.; Tegel, W.; Normand, S.; Myers-Smith, I.; Kirdyanov, A.V.; Nievergelt, D.; Schweingruber, F.H.

[Text] / O. Masyagina [et al.] // Photosynth. Res. - 2016. - Vol. 130, Is. 1-3. - P267-274, DOI 10.1007/s11120-016-0250-1. - Cited References:14. - We would like to thank staff of laboratory of biogeochemical cycles in forest ecosystems at V.N. Sukachev Institute of Forest Siberian Branch, namely Tsukanov A.A., Timokhina A.V., Klimchenko A.V., Panov A.V. for the various technical assistance during fieldworks at Tura Station (Evenkia, Russian Federation). This work was partly supported by the Russian Foundation of Basic Research (Grant No 13-04-00659-a) and by the Russian Science Foundation (14-24-00113). . - ISSN 0166-8595. - ISSN 1573-5079РУБ Plant Sciences

Аннотация: This research is an attempt to study seasonal translocation patterns of photoassimilated carbon within trees of one of the high latitudes widespread deciduous conifer species Larix gmelinii (Rupr. Rupr). For this purpose, we applied whole-tree labeling by (CO2)-C-13, which is a powerful and effective tool for tracing newly developed assimilates translocation to tissues and organs of a tree. Experimental plot has been established in a mature 105-year-old larch stand located within the continuous permafrost area near Tura settlement (Central Siberia, 64A degrees 17'13aEuro(3)N, 100A degrees 11'55aEuro(3)E, 148 m a.s.l.). Measurements of seasonal photosynthetic activity and foliage parameters (i.e., leaf length, area, biomass, etc.), and sampling were arranged from early growing season (June 8, 2013; May 14, 2014) until yellowing and senescence of needles (September 17, 2013; September 14, 2014). Labeling by C-13 of the tree branch (June 2013, for 3 branch replicates in 3 different trees) and the whole tree was conducted at early (June 2014), middle (July 2014), and late (August 2013) phase of growing season (for different trees in 3 replicates each time) by three pulses [(CO2)max = 3000-4000 ppmv, (CO2)-C-13 (30 % v/v)]. We found at least two different patterns of carbon translocation associated with larch CO2 assimilation depending on needle phenology. In early period of growing season (June), C-13 appearing in newly developed needles is a result of remobilized storage material use for growth purposes. Then approximately at the end of June, growth processes is switching to storage processes lasting to the end of growing season.

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VN Sukachev Inst Forest SB RAS, Krasnoyarsk, Russia.
NRC Kurchatov Inst, Moscow, Russia.
SRC Planeta, Moscow, Russia.

Доп.точки доступа:
Masyagina, Oxana; Prokushkin, Anatoly; Kirdyanov, Alexander; Artyukhov, Aleksey; Udalova, Tatiana; Senchenkov, Sergey; Rublev, Aleksey; Russian Foundation of Basic Research [13-04-00659-a]; Russian Science Foundation [14-24-00113]

/ B. Yang [et al.] // Proc. Natl. Acad. Sci. U. S. A. - 2017. - Vol. 114, Is. 27. - P6966-6971, DOI 10.1073/pnas.1616608114. - Cited References:51. - We are grateful to the three anonymous reviewers for their invaluable comments. We are grateful to Q. B. Zhang, Z. S. Li, and X. H. Gou for providing the tree-ring data; to T. Che, L. Y. Dai, and L. Xiao for forwarding the snow depth dataset; to J. C. Xu and H. Y. Yu for providing phenological data; to C. Qin, M. Song, X. Wang, and T. Yang for doing support in simulation; to Prof. Quansheng Ge, Prof. Kathleen A. Campbell, David Chandler, and Martin Cregeen for suggestions and language edits; and to the National Natural Reserve of the Qilian Mountains for logistic support. We acknowledge the International Tree-Ring Data Bank as the source of some of our tree-ring data. This study was jointly funded by the National Natural Science Foundation of China (Grants 41520104005, 41325008, and 41661144008). V.S. and I.T. were supported by the Russian Science Foundation (Grant 14-14-00219P). V. S. acknowledges the support of the Chinese Academy of Sciences President's International Fellowship for Visiting Scientists (Grant 2016VEC033). M.H. appreciates the support of the Alexander von Humboldt Foundation. . - ISSN 0027-8424РУБ Multidisciplinary Sciences

Аннотация: Phenological responses of vegetation to climate, in particular to the ongoing warming trend, have received much attention. However, divergent results from the analyses of remote sensing data have been obtained for the Tibetan Plateau (TP), the world's largest high-elevation region. This study provides a perspective on vegetation phenology shifts during 1960-2014, gained using an innovative approach based on a well-validated, process-based, tree-ring growth model that is independent of temporal changes in technical properties and image quality of remote sensing products. Twenty composite site chronologies were analyzed, comprising about 3,000 trees from forested areas across the TP. We found that the start of the growing season (SOS) has advanced, on average, by 0.28 d/y over the period 1960-2014. The end of the growing season (EOS) has been delayed, by an estimated 0.33 d/y during 1982-2014. No significant changes in SOS or EOS were observed during 1960-1981. April-June and August-September minimum temperatures are the main climatic drivers for SOS and EOS, respectively. An increase of 1 degrees C in April-June minimum temperature shifted the dates of xylem phenology by 6 to 7 d, lengthening the period of tree-ring formation. This study extends the chronology of TP phenology farther back in time and reconciles the disparate views on SOS derived from remote sensing data. Scaling up this analysis may improve understanding of climate change effects and related phenological and plant productivity on a global scale.

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Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China.
Univ Erlangen Nurnberg, Inst Geog, D-91058 Erlangen, Germany.
Siberian Fed Univ, Math Methods & Informat Technol Dept, Krasnoyarsk 660075, Russia.
Russian Acad Sci, VN Sukachev Inst Forest, Lab Tree Ring Struct, Siberian Branch, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Univ Quebec Chicoutimi, Dept Sci Fondamentales, Chicoutimi, PQ G7H 2B1, Canada.
Chinese Acad Sci, Key Lab Vegetat Restorat & Management Degraded Ec, Prov Key Lab Appl Bot, South China Bot Garden, Guangzhou 510650, Guangdong, Peoples R China.
Stockholm Univ, Dept Hist, SE-10691 Stockholm, Sweden.
Stockholm Univ, Bolin Ctr Climate Res, SE-10691 Stockholm, Sweden.

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Yang, Bao; He, Minhui; Shishov, Vladimir; Tychkov, Ivan; Vaganov, Eugene; Rossi, Sergio; Ljungqvist, Fredrik Charpentier; Brauning, A.; Griessinger, Jussi; National Natural Science Foundation of China [41520104005, 41325008, 41661144008]; Russian Science Foundation [14-14-00219P]; Chinese Academy of Sciences [2016VEC033]; Alexander von Humboldt Foundation

/ G. G. Polyakova, V. A. Senashova // Mikol. Fitopatol. - 2017. - Vol. 51, Is. 3. - С. 168-177 . - ISSN 0026-3648
Аннотация: Biotrophic fungus Melampsorella caryophyllacearum (Pucciniastraceae, Pucciniomycetes, Basidiomycota) developing in tissues of a fir (Abies sibirica) causes broom rust. Physiological mechanisms of plant resistance and fungus pathogenicity are not clear. The purpose of this work was an assessment of a role of secondary compounds and carbohydrates in mechanisms of interaction of Siberian fir and fungus M. caryophyllacearum. The 20-year age trees of Siberian fir grow in a mountain taiga zone in suburban forests of Krasnoyarsk (Central Siberia). Two options (one-year axes and needles of the current year without signs of damage by the fungus, and infected ones) were compared. Samples were taken on 3 trees 3 times during vegetation season: on June 21 (a phenology stage of shoot growth and a formation of pathogen etion), on July 19 (a phenology stage of summer vegetation and the period of active sporulation) and on September 10 (a phenology stage of autumn coloration of leaves and dying off the infected needles). The lignin and resin content were determined by weight method (the lignin determined with thioglycolic acid, the resins - by dissolving in pentane), carbohydrates - by the method of copper reduction using glucose as a standard, PAs - by coloring of solution after adding n-butanol / HCl mixture and heating. Starch was determined by coloring with iodine. The analysis of ANOVA proved reliable influence of various factors (phenology stage, plant organ (needles, axis), presence/absence of fungus infestation) on the content of PAs, lignin, monosaccharides (p < 0.05). The content of resin depended on plant organ only (resin content was more in axes, than in needles; p < 0.05). The tendency to starch accumulation in the infected axes during vegetation appeared to be caused by breakage of carbohydrates outflow. Infecting by the fungus caused decrease in the content of monosaccharides (p<0.05) that probably was connected with active consumption of mobile carbohydrates by the biotroph. The accumulation of PAs was revealed in needles and axes induced by M. caryophyllacearum fungus. Unlike PAs, the lignin concentration differently changed in the infected plant tissues. The accumulation of lignin was noted in diseased needles. In the infected axes in July the lignin content was significantly lower in comparison with control (p < 0.05). The found effect appeared to be manifestation of successful inhibition of plant protection by fungus. We suggested a hypothesis of the delayed lignification according to which a fungus inhibits synthesis of lignin and increases the chances in overcoming of protective barriers of a host. Perhaps, the pathogen influences carbon distribution by reducing its part for synthesis of lignin and increasing thereby synthesis of carbohydrates which further actively uses. The obtained data is agreed with concept according to which with effector molecules, biotrophs manipulate the defense machinery of the host in order to delay defense responses to gain enough time to multiply and spread into neighboring cells. © 2017 Russian Academy of Sciences. All rights reserved.

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Держатели документа:
Sukachev Institute of Forest, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, Russian Federation

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Polyakova, G. G.; Senashova, V. A.

/ E. Babushkina, D. Zhirnova, L. Belokopytova, E. Vaganov // J. Mt. Sci. - 2020. - Vol. 17, Is. 1. - P16-30, DOI 10.1007/s11629-019-5516-6 . - ISSN 1672-6316
Аннотация: The warming-driven increase of the vegetation season length impacts both net productivity and phenology of plants, changing an annual carbon cycle of terrestrial ecosystems. To evaluate this influence, tree growth along the temperature gradients can be investigated on various organization levels, beginning from detailed climatic records in xylem cells’ number and morphometric parameters. In this study, the Borus Ridge of the Western Sayan Mountains (South Siberia) was considered as a forest area under rapid climate change caused by massive Sayano-Shushenskoe reservoir. Several parameters of the xylem anatomical structure in Siberian spruce (Picea obovata Ledeb.) were derived from normalized tracheidograms of cell radial diameter and cell wall thickness and analyzed during 50 years across elevational gradient (at 520, 960, and 1320 m a.s.l.). On the regional scale, the main warming by 0.42°C per decade occurs during cold period (November–March). Construction of the reservoir accelerated local warming substantially since 1980, when abrupt shift of the cold season temperature by 2.6°C occurred. It led to the vegetation season beginning 3–6 days earlier and ending 4–10 day later with more stable summer heat supply. Two spatial patterns were found in climatic response of maximal cell wall thickness: (1) temperature has maximal impact during 21-day period, and its seasonality shifts with elevation in tune with temperature gradient; (2) response to the date of temperature passing +9.5°C threshold is observed at two higher sites. Climate change yielded significantly bigger early wood spruce tracheids at all sites, but its impact on cell wall deposition process had elevational gradient: maximal wall thickness increased by 7.9% at the treeline, by 18.2% mid-range, and decreased by 4.9% at the lower boundary of spruce growth; normalized total cell wall area increased by 6.2%–6.8% at two higher sites but remained stable at the lowest one. We believe that these patterns are caused by two mechanisms of spruce secondary growth cessation: “emergency” induced by temperature drop versus “regular” one in warmer conditions. Therefore, autumn lengthening of growth season stimulated wood matter accumulation in tracheid walls mainly in cold environment, increasing role of boreal and mountain forests in carbon cycle. © 2020, Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag GmbH Germany, part of Springer Nature.

Scopus

Держатели документа:
Khakass Technical Institute, Siberian Federal University, Abakan, 655017, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
SukachevInstitute of Forest, Siberian Branch of Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Babushkina, E.; Zhirnova, D.; Belokopytova, L.; Vaganov, E.

/ E. Babushkina, D. Zhirnova, L. Belokopytova, E. Vaganov // J Mt. Sci. - 2020. - Vol. 17, Is. 1. - P16-30, DOI 10.1007/s11629-019-5516-6. - Cited References:82. - Authors would like to thank administration of the National Park "ShushenskyBor" and personally its director Tolmachev V.A. for providing permission and facilitating field work on the park territory. The research reported in this manuscript is funded by the Russian Foundation for Basic Research (Project No. 17-04-00315, data aquisition and wood anatomy analysis) and Russian Science Foundation (Project No 19-18-00145, analysis of climate change and its impact). . - ISSN 1672-6316. - ISSN 1993-0321РУБ Environmental Sciences

Аннотация: The warming-driven increase of the vegetation season length impacts both net productivity and phenology of plants, changing an annual carbon cycle of terrestrial ecosystems. To evaluate this influence, tree growth along the temperature gradients can be investigated on various organization levels, beginning from detailed climatic records in xylem cells' number and morphometric parameters. In this study, the Borus Ridge of the Western Sayan Mountains (South Siberia) was considered as a forest area under rapid climate change caused by massive Sayano-Shushenskoe reservoir. Several parameters of the xylem anatomical structure in Siberian spruce (Picea obovata Ledeb.) were derived from normalized tracheidograms of cell radial diameter and cell wall thickness and analyzed during 50 years across elevational gradient (at 520, 960, and 1320 m a.s.l.). On the regional scale, the main warming by 0.42 degrees C per decade occurs during cold period (November-March). Construction of the reservoir accelerated local warming substantially since 1980, when abrupt shift of the cold season temperature by 2.6 degrees C occurred. It led to the vegetation season beginning 3-6 days earlier and ending 4-10 day later with more stable summer heat supply. Two spatial patterns were found in climatic response of maximal cell wall thickness: (1) temperature has maximal impact during 21-day period, and its seasonality shifts with elevation in tune with temperature gradient; (2) response to the date of temperature passing +9.5 degrees C threshold is observed at two higher sites. Climate change yielded significantly bigger early wood spruce tracheids at all sites, but its impact on cell wall deposition process had elevational gradient: maximal wall thickness increased by 7.9% at the treeline, by 18.2% mid-range, and decreased by 4.9% at the lower boundary of spruce growth; normalized total cell wall area increased by 6.2%-6.8% at two higher sites but remained stable at the lowest one. We believe that these patterns are caused by two mechanisms of spruce secondary growth cessation: "emergency" induced by temperature drop versus "regular" one in warmer conditions. Therefore, autumn lengthening of growth season stimulated wood matter accumulation in tracheid walls mainly in cold environment, increasing role of boreal and mountain forests in carbon cycle.

WOS

Держатели документа:
Siberian Fed Univ, Khakass Tech Inst, Abakan 633017, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Siberian Branch, SukachevInst Forest, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Babushkina, Elena; Zhirnova, Dina; Belokopytova, Liliana; Vaganov, Eugene; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [17-04-00315]; Russian Science FoundationRussian Science Foundation (RSF) [19-18-00145]

/ A. Rubtsov, A. Arzac, A. Knorre [et al.] // IOP Conference Series: Earth and Environmental Science : IOP Publishing Ltd, 2020. - Vol. 611: 11th International Conference and Early Career Scientists School on Environmental Observations, Modeling and Information Systems, ENVIROMIS 2020 (7 September 2020 through 11 September 2020, ) Conference code: 166001, Is. 1. - Ст. 012028, DOI 10.1088/1755-1315/611/1/012028 . -
Аннотация: This work is targeted to evaluate the reaction of individual trees against periodic and punctual environmental stressing events with a network of long-term monitoring of tree water/growth-related processes in various geographic and climatic areas. Instrumental measurements of stem circumferential/radial size changes (dRc/dR) using band/point dendrometers and stem sap flow rates (Q) using a trunk segment heat balance method in Scots pine, Siberian larch, and Dahurian larch trees have been carried out at three research sites in Krasnoyarsk Krai, Russia. Analysis of perennial dRc/dR and seasonal Q data obtained in 2015-2019 allows us to characterize the seasonality and features of the tree stem growth and stem water transport rates specific for each of the studied conifer species and on different temporal scales (diurnal, inter/intra-seasonal, and annual). The archived in-situ data are used to verify the efficiency of some process-based BS-and stochastic VS-tree growth and phenology models for Siberian larch and Scots pine trees. The results have confirmed the realistic nature of the simulation and have shown certain drawbacks of these models. © Published under licence by IOP Publishing Ltd.

Scopus

Держатели документа:
Siberian Federal University, Akademgorodok str., 50a k2, Krasnoyarsk, Russian Federation
National Park krasnoyarsk Stolby, Karyernaya srt., 26-a, Krasnoyarsk, Russian Federation
Sukachev Institute of Forest SB RAS, Akademgorodok str., 50/28, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Rubtsov, A.; Arzac, A.; Knorre, A.; Shashkin, A.; Benkova, V.; Vaganov, E.

/ J. Tumajer, J. Kaspar, H. Kuzelova [et al.] // Front. Plant Sci. - 2021. - Vol. 12. - Ст. 613643, DOI 10.3389/fpls.2021.613643 . - ISSN 1664-462X
Аннотация: Significant alterations of cambial activity might be expected due to climate warming, leading to growing season extension and higher growth rates especially in cold-limited forests. However, assessment of climate-change-driven trends in intra-annual wood formation suffers from the lack of direct observations with a timespan exceeding a few years. We used the Vaganov-Shashkin process-based model to: (i) simulate daily resolved numbers of cambial and differentiating cells; and (ii) develop chronologies of the onset and termination of specific phases of cambial phenology during 1961–2017. We also determined the dominant climatic factor limiting cambial activity for each day. To asses intra-annual model validity, we used 8 years of direct xylogenesis monitoring from the treeline region of the Krkonose Mts. (Czechia). The model exhibits high validity in case of spring phenological phases and a seasonal dynamics of tracheid production, but its precision declines for estimates of autumn phenological phases and growing season duration. The simulations reveal an increasing trend in the number of tracheids produced by cambium each year by 0.42 cells/year. Spring phenological phases (onset of cambial cell growth and tracheid enlargement) show significant shifts toward earlier occurrence in the year (for 0.28–0.34 days/year). In addition, there is a significant increase in simulated growth rates during entire growing season associated with the intra-annual redistribution of the dominant climatic controls over cambial activity. Results suggest that higher growth rates at treeline are driven by (i) temperature-stimulated intensification of spring cambial kinetics, and (ii) decoupling of summer growth rates from the limiting effect of low summer temperature due to higher frequency of climatically optimal days. Our results highlight that the cambial kinetics stimulation by increasing spring and summer temperatures and shifting spring phenology determine the recent growth trends of treeline ecosystems. Redistribution of individual climatic factors controlling cambial activity during the growing season questions the temporal stability of climatic signal of cold forest chronologies under ongoing climate change. © Copyright © 2021 Tumajer, Kaspar, Kuzelova, Shishov, Tychkov, Popkova, Vaganov and Treml.

Scopus

Держатели документа:
Department of Physical Geography and Geoecology, Faculty of Science, Charles University, Prague, Czech Republic
Institute of Botany and Landscape Ecology, University of Greifswald, Greifswald, Germany
Laboratory for Integral Studies of Forest Dynamics of Eurasia, Siberian Federal University, Krasnoyarsk, Russian Federation
Sukachev Institute of Forest SB RAS, Krasnoyarsk, Russian Federation
Rectorate, Siberian Federal University, Krasnoyarsk, Russian Federation
Center for Forest Ecology and Productivity of the Russian Academy of Sciences, Moscow, Russian Federation

Доп.точки доступа:
Tumajer, J.; Kaspar, J.; Kuzelova, H.; Shishov, V. V.; Tychkov, I. I.; Popkova, M. I.; Vaganov, E. A.; Treml, V.

/ J. Tumajer, J. Kaspar, H. Kuzelova [et al.] // Front. Plant Sci. - 2021. - Vol. 12. - Ст. 613643, DOI 10.3389/fpls.2021.613643. - Cited References:83. - This study was funded by the Czech Science Foundation (19-138076S). In addition, JT was supported by the Alexander von Humboldt Research Fellowship and by Charles University (UNCE/HUM 018); VS, MP, and IT were supported by the Russian Science Foundation (14-14-00219P) and by the Russian Ministry of Science and Higher Education (FSRZ-2020-0010 and FSRZ-2020-0014) and EV was supported by the Russian Science Foundation (19-77-30015). . - ISSN 1664-462XРУБ Plant Sciences

Аннотация: Significant alterations of cambial activity might be expected due to climate warming, leading to growing season extension and higher growth rates especially in cold-limited forests. However, assessment of climate-change-driven trends in intra-annual wood formation suffers from the lack of direct observations with a timespan exceeding a few years. We used the Vaganov-Shashkin process-based model to: (i) simulate daily resolved numbers of cambial and differentiating cells; and (ii) develop chronologies of the onset and termination of specific phases of cambial phenology during 1961-2017. We also determined the dominant climatic factor limiting cambial activity for each day. To asses intra-annual model validity, we used 8 years of direct xylogenesis monitoring from the treeline region of the Krkonose Mts. (Czechia). The model exhibits high validity in case of spring phenological phases and a seasonal dynamics of tracheid production, but its precision declines for estimates of autumn phenological phases and growing season duration. The simulations reveal an increasing trend in the number of tracheids produced by cambium each year by 0.42 cells/year. Spring phenological phases (onset of cambial cell growth and tracheid enlargement) show significant shifts toward earlier occurrence in the year (for 0.28-0.34 days/year). In addition, there is a significant increase in simulated growth rates during entire growing season associated with the intra-annual redistribution of the dominant climatic controls over cambial activity. Results suggest that higher growth rates at treeline are driven by (i) temperature-stimulated intensification of spring cambial kinetics, and (ii) decoupling of summer growth rates from the limiting effect of low summer temperature due to higher frequency of climatically optimal days. Our results highlight that the cambial kinetics stimulation by increasing spring and summer temperatures and shifting spring phenology determine the recent growth trends of treeline ecosystems. Redistribution of individual climatic factors controlling cambial activity during the growing season questions the temporal stability of climatic signal of cold forest chronologies under ongoing climate change.

WOS

Держатели документа:
Charles Univ Prague, Fac Sci, Dept Phys Geog & Geoecol, Prague, Czech Republic.
Ernst Moritz Arndt Univ Greifswald, Inst Bot & Landscape Ecol, Greifswald, Germany.
Siberian Fed Univ, Lab Integral Studies Forest Dynam Eurasia, Krasnoyarsk, Russia.
Sukachev Inst Forest SB RAS, Krasnoyarsk, Russia.
Siberian Fed Univ, Krasnoyarsk, Russia.
Russian Acad Sci, Ctr Forest Ecol & Prod, Moscow, Russia.

Доп.точки доступа:
Tumajer, Jan; Kaspar, Jakub; Kuzelova, Hana; Shishov, Vladimir V.; Tychkov, Ivan I.; Popkova, Margarita, I; Vaganov, Eugene A.; Treml, Vaclav; Shishov, Vladimir; Czech Science FoundationGrant Agency of the Czech Republic [19-138076S]; Alexander von Humboldt Research FellowshipAlexander von Humboldt Foundation; Charles University [UNCE/HUM 018]; Russian Science FoundationRussian Science Foundation (RSF) [19-77-30015, 14-14-00219P]; Russian Ministry of Science and Higher Education [FSRZ-2020-0010, FSRZ-2020-0014]

/ D. F. Zhirnova, L. V. Belokopytova, D. M. Meko [et al.] // Sci Rep. - 2021. - Vol. 11, Is. 1. - Ст. 14266, DOI 10.1038/s41598-021-93745-0. - Cited References:80. - This research was performed within the framework of a state assignment of the Ministry of Science and Higher Education, RF (FSRZ-2020-0010), analysis of data was funded by Russian Science Foundation (19-77-30015). D. Meko's contribution was supported by Office of Polar Programs of National Science Foundation, USA (NSF-OPP #1917503).The authors are grateful to M.A. Bureeva (Khakass Technical Institute, Siberian Federal University) for implementing an algorithm (program not registered) automatically calculating dates of stable temperature crossing of thresholds from daily temperature series. . - ISSN 2045-2322РУБ Multidisciplinary Sciences

Аннотация: Regional and local climate change depends on continentality, orography, and human activities. In particular, local climate modification by water reservoirs can reach far from shore and downstream. Among the possible ecological consequences are shifts in plant performance. Tree-ring width of affected trees can potentially be used as proxies for reservoir impact. Correlation analysis and t-tests were applied to climatic data and tree-ring chronologies of Pinus sylvestris L. and Larix sibirica Ledeb. from moisture-deficit habitats in the intermontane Khakass-Minusinsk Depression, to assess modification of climate and tree growth by the Krasnoyarsk and Sayano-Shushenskoe Reservoirs on the Yenisei River. Abrupt significant cooling in May-August and warming in September-March occurred after the launch of the turbines in dams, more pronounced near the Sayano-Shushenskoe dam (up to - 0.5 degrees C in summer and to+3.5 degrees C in winter) than near the Krasnoyarsk Reservoir headwaters (- 0.3 degrees C and+1.4 degrees C). Significant lengthening of the warm season was also found for temperature thresholds 0-8 degrees C. Shifts of seasonality and intensity occurred in climatic responses of all tree-ring chronologies after development of water reservoirs. Patterns of these shifts, however, depended on species-specific sensitivity to climatic modification, distance from reservoirs, and physiographic regions. Mitigation of climate continentality and extremes by reservoirs appears to have offset possible negative effects of warming on tree growth.

WOS

Держатели документа:
Siberian Fed Univ, Khakass Tech Inst, Abakan, Russia.
Univ Arizona, Lab Tree Ring Res, Tucson, AZ USA.
Siberian Fed Univ, Krasnoyarsk, Russia.
Sukachev Inst Forest SB RAS, Krasnoyarsk, Russia.

Доп.точки доступа:
Zhirnova, D. F.; Belokopytova, L., V; Meko, D. M.; Babushkina, E. A.; Vaganov, E. A.; Russian Science FoundationRussian Science Foundation (RSF) [19-77-30015]; Office of Polar Programs of National Science Foundation, USA (NSF-OPP) [1917503]

/ L. V. Belokopytova, D. M. Meko, D. F. Zhirnova [et al.] // Trees Struct. Funct. - 2021, DOI 10.1007/s00468-021-02196-7 . - Article in press. - ISSN 0931-1890
Аннотация: Key message: Growth patterns of Scots pine and Siberian larch under water deficit across an intermontane valley in South Siberia depend not only on landscape physiography but on species-specific climatic sensitivity and phenology. Abstract: The wide intermountain Khakass–Minusinsk Depression (KhMD) in southern Siberia presents an ideal setting for studying the potential impacts of a warming climate on forest ecosystems. The Centre of Continental Asia has one of the most intense rates of warming in the Northern Hemisphere, and the KhMD has multiple tree species of proven dendroclimatic value growing in drought-stressed environments. Investigation was aimed at spatial patterns of tree growth and its climate response across the KhMD for two main conifer species of moisture-deficient habitats, Scots pine (Pinus sylvestris L.) and Siberian larch (Larix sibirica Ledeb.). Correlation and cluster analysis were applied to a recently developed network of 15 tree-ring chronologies. Hierarchical classifications were based on the inter-chronology correlation matrix and on correlations of chronologies with monthly climate variables. Results underscore the general influence of hot-dry conditions on reducing growth and suggest a spatial grouping of chronologies governed by physiography and modified by species-dependent ecophysiological response to climate. Both applied classifications agree on the designation of geographically oriented clusters. A purely geographic grouping is broken, however, by species-specific climate dependence and phenology in deciduous Larix and evergreen Pinus. A differential ability to utilize melting snowpack in spring is advanced as a possible explanation for chronologies abandoning physiographically defined clusters. Such inter-species heterogeneity can manifest itself in the intensity of the climate change impact on vegetation, and lead to prospects of significant species composition changes in ecosystems. © 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.

Scopus

Держатели документа:
Khakass Technical Institute, Siberian Federal University, Abakan, Russian Federation
Laboratory of Tree-Ring Research, University of Arizona, Tucson, United States
Siberian Federal University, Krasnoyarsk, Russian Federation
Sukachev Institute of Forest SB RAS, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Belokopytova, L. V.; Meko, D. M.; Zhirnova, D. F.; Babushkina, E. A.; Vaganov, E. A.

/ L. V. Belokopytova, D. M. Meko, D. F. Zhirnova [et al.] // Trees-Struct. Funct. - 2021, DOI 10.1007/s00468-021-02196-7. - Cited References:33. - This research was performed within the framework of a state assignment of the Ministry of Science and Higher Education of the Russian Federation (FSRZ-2020-0010). The study was funded by Russian Science Foundation (19-18-00145). D. Meko's contribution was supported by the Office of Polar Programs of the National Science Foundation, USA (NSF-OPP Award #1917503, I. Panyushkina, D. Meko and D. Frank). . - Article in press. - ISSN 0931-1890. - ISSN 1432-2285РУБ Forestry

Аннотация: Key message Growth patterns of Scots pine and Siberian larch under water deficit across an intermontane valley in South Siberia depend not only on landscape physiography but on species-specific climatic sensitivity and phenology. The wide intermountain Khakass-Minusinsk Depression (KhMD) in southern Siberia presents an ideal setting for studying the potential impacts of a warming climate on forest ecosystems. The Centre of Continental Asia has one of the most intense rates of warming in the Northern Hemisphere, and the KhMD has multiple tree species of proven dendroclimatic value growing in drought-stressed environments. Investigation was aimed at spatial patterns of tree growth and its climate response across the KhMD for two main conifer species of moisture-deficient habitats, Scots pine (Pinus sylvestris L.) and Siberian larch (Larix sibirica Ledeb.). Correlation and cluster analysis were applied to a recently developed network of 15 tree-ring chronologies. Hierarchical classifications were based on the inter-chronology correlation matrix and on correlations of chronologies with monthly climate variables. Results underscore the general influence of hot-dry conditions on reducing growth and suggest a spatial grouping of chronologies governed by physiography and modified by species-dependent ecophysiological response to climate. Both applied classifications agree on the designation of geographically oriented clusters. A purely geographic grouping is broken, however, by species-specific climate dependence and phenology in deciduous Larix and evergreen Pinus. A differential ability to utilize melting snowpack in spring is advanced as a possible explanation for chronologies abandoning physiographically defined clusters. Such inter-species heterogeneity can manifest itself in the intensity of the climate change impact on vegetation, and lead to prospects of significant species composition changes in ecosystems.

WOS

Держатели документа:
Siberian Fed Univ, Khakass Tech Inst, Abakan, Russia.
Univ Arizona, Lab Tree Ring Res, Tucson, AZ USA.
Siberian Fed Univ, Krasnoyarsk, Russia.
Sukachev Inst Forest SB RAS, Krasnoyarsk, Russia.

Доп.точки доступа:
Belokopytova, L., V; Meko, D. M.; Zhirnova, D. F.; Babushkina, E. A.; Vaganov, E. A.; Ministry of Science and Higher Education of the Russian Federation [FSRZ-2020-0010]; Russian Science FoundationRussian Science Foundation (RSF) [19-18-00145]; Office of Polar Programs of the National Science Foundation, USA (NSF-OPP Award) [1917503]