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

[Текст] = Forensic botanical examination with methods of dendrochronology in illegal timbercutting investigations in Krasnoyarsk area : материалы временных коллективов / О. И. Зыкина // Исследование компонентов лесных экосистем Сибири: Материалы конференции молодых ученых, 5-6 апреля 2012 г. , Красноярск. - Красноярск : Институт леса им. В.Н. Сукачева СО РАН , 2012. - Вып.13. - С. 15-17. - Библиогр.: 4 назв.
Аннотация: Forensic botanical examination with some methods of dendrochronology plays a great part in illegal timbercutting investigations in Krasnoyarsk area as it provides a numerous research and technical aid for forensic examination.

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

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Zykina Ol'ga Igoryevna

/ J. . Krepkowski [et al.] // New Phytol. - 2013. - Vol. 199, Is. 2. - P431-440, DOI 10.1111/nph.12266. - Cited References: 56. - We are indebted to the German Research Foundation for funding this project (BR 1895/15). We are grateful to the two anonymous reviewers for their constructive comments, which helped us to improve the quality of the paper. . - 10. - ISSN 0028-646XРУБ Plant Sciences

Аннотация: We present an intra-annual stable carbon isotope (13C) study based on a labeling experiment to illustrate differences in temporal patterns of recent carbon allocation to wood structures of two functional types of trees, Podocarpus falcatus (a late-successional evergreen conifer) and Croton macrostachyus (a deciduous broadleaved pioneer tree), in a tropical mountain forest in Ethiopia. Dendrometer data, wood anatomical thin sections, and intra-annual 13C analyses were applied. Isotope data revealed a clear annual growth pattern in both studied species. For P.falcatus, it was possible to synchronize annual 13C peaks, wood anatomical structures and monthly precipitation patterns. The labeling signature was evident for three consecutive years. For C.macrostachyus, isotope data illustrate a rapid decline of the labeling signal within half a year. Our 13C labeling study indicates a distinct difference in carryover effects between trees of different functional types. A proportion of the labeled 13C is stored in reserves of wood parenchyma for up to 3yr in P.falcatus. By contrast, C.macrostachyus shows a high turnover of assimilates and a carbon carryover effect is only detectable in the subsequent year.

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Держатели документа:
[Krepkowski, Julia
Braeuning, Achim] Univ Erlangen Nurnberg, Inst Geog, D-91054 Erlangen, Germany
[Gebrekirstos, Aster] World Agroforestry Ctr, Nairobi, Kenya
[Shibistova, Olga] Leibniz Univ Hannover, Inst Soil Sci, D-30419 Hannover, Germany
[Shibistova, Olga] Russian Acad Sci, VN Sukachev Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Krepkowski, J...; Gebrekirstos, A...; Shibistova, O...; Brauning, A...

/ V. I. Kharuk, M. L. Dvinskaya, K. J. Ranson // Int. J. Wildland Fire. - 2013. - Vol. 22, Is. 2. - P207-211, DOI 10.1071/WF11181. - Cited References: 28. - This research was supported by the SB RAS Program Number 27.33, and NASA Science Mission Directorate, Terrestrial Ecology Program. The authors thank Dr Joanne Howl for editing the manuscript. . - 5. - ISSN 1049-8001РУБ Forestry

Аннотация: A fire history of northern larch forests was studied. These larch forests are found near the northern limit of their range at similar to 71 degrees N, where fires are predominantly caused by lightning strikes rather than human activity. Fire-return intervals (FRIs) were calculated based on fire scars and dates of tree natality. Tree natality was used as an approximation of the date of the last fire. The average FRI was found to be 295 +/- 57 years, which is the longest reported for larch-dominated stands. Prior studies reported 80-90-year FRIs at 64 degrees N and similar to 200 years near the latitude of the Arctic Circle. Comparing data from fires that occurred in 1700-1849 (end of the Little Ice Age, LIA) and 1850-1999 (post-LIA warming) indicates approximately twice as many fires occurred during the latter period. This agrees with the hypothesis that observed climatic warming will result in an increase in fire frequency. Our results also indicate that fires that did not leave visible fire scars on the tree stem may be identified based on the date of growth release revealed from dendrochronology.

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Держатели документа:
[Kharuk, Vyacheslav I.
Dvinskaya, Mariya L.] Siberian Fed Univ, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia
[Ranson, K. Jon] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

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

[Text] / T. . Wallenius [et al.] // Int. J. Wildland Fire. - 2011. - Vol. 20, Is. 2. - P248-254, DOI 10.1071/WF10020. - Cited References: 43. - Aleksey Sadvordaev, Galina Zrazhevskaya, Toivo Haltia and Antti Lavikainen helped with the challenging arrangements and the field work. Oskar Ofluds Stiftelse, Nordenskiolds Samfundet and Ulla Wallenius funded the expedition to central Siberia. The Maj and Tor Nessling Foundation (grant number 2003064), Emil Aaltonen Foundation and Finnish Academy (grant number 121919) financed this long-duration study from field work to publication. . - 7. - ISSN 1049-8001РУБ Forestry

Аннотация: To study the poorly known fire history of Larix-dominated forest in central Siberia, we collected samples from 200 trees in 46 systematically located study plots. Our study area stretches similar to 90 km from north to south along the River Nizhnyaya Tunguska in northern Irkustk district. Cross-dated tree-ring chronology for all samples combined extended from the year 1360 AD to the present and included 76 fire years and 88 separate fire events. Average fire cycle gradually lengthened from 52 years in the 18th century to 164 years in the 20th century. During the same time, the number of recorded fires decreased even more steeply, i.e. by more than 85%. Fires were more numerous but smaller in the past. Contrary to expectations, climate change in the 20th century has not resulted in increased forest fires in this region. Fire suppression may have contributed to the scarcity of fires since the 1950s. However, a significant decline in fires was evident earlier; therefore an additional explanation is required, a reduction in human-caused ignitions being likely in the light of historical accounts.

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Держатели документа:
[Wallenius, Tuomo
Heikkinen, Juha] Finnish Forest Res Inst, Vantaa Res Unit, FI-01301 Vantaa, Finland
[Larjavaara, Markku] Smithsonian Trop Res Inst, Balboa, Ancon, Panama
[Shibistova, Olga] SB RAS, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Wallenius, T...; Larjavaara, M...; Heikkinen, J...; Shibistova, O...

[Text] / G. A. Ivanova [et al.] // Environ. Res. Lett. - 2010. - Vol. 5, Is. 1. - Ст. 15002, DOI 10.1088/1748-9326/5/1/015002. - Cited References: 35. - The authors gratefully acknowledge financial support for this research from the National Aeronautics and Space Administration (NASA), the Land Cover Land Use Change (LCLUC) Science Program, the Russian Academy of Sciences, Siberian Branch, and the Russian Fund of Fundamental Investigation. We would also like to acknowledge the skillful scientific translation services provided by Irina Savkina. . - 7. - ISSN 1748-9326РУБ Environmental Sciences + Meteorology & Atmospheric Sciences

Аннотация: Forest fires resulting from long periods of drought cause extensive forest ecosystem destruction and can impact on the carbon balance and air quality and feed back to the climate system, regionally and globally. Past fire frequency is reconstructed for Tuvan Scots pine stands using dendrochronology and statistics. Central Tuvan Scots pine ( Pinus sylvestris) stands are subject to annual fire regimes; however high intensity fires are rare but they are responsible for most of the damage. Low, medium, and high severity fires have shaped the multi-story Scots pine communities, locally and regionally. Fire type and frequency are directly related to weather and climate and are also dependent on anthropogenic influences. The primary dry period, which promotes fire ignition and spread, in Tuva occurs in April and May. In some years, the precipitation deficit combined with high air temperatures induces long periods of drought. Unlike the typical surface fire regime, forest fires that burn during these extreme droughts often become crown fires that result in substantial forest damage and carbon release. The mean fire interval (MFI) is found to be 10.4 years in Balgazyn stands, and the landscape-scale MFI is 22.4 years. High severity, stand-replacing crown fires have a longer MFI. The warmer and dryer weather that is predicted by global climate models is evident in Tuva, and we believe that these changes in weather and climate have resulted in increased fire intensity and severity, rather than fire frequency in the Tuvan region.

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Держатели документа:
[Ivanova, G. A.
Kukavskaya, E. A.] Russian Acad Sci, Siberian Branch, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia
[Ivanov, V. A.] Siberian State Technol Univ, Krasnoyarsk 660049, Russia
[Soja, A. J.] NASA, Langley Res Ctr, Natl Inst Aerosp, Hampton, VA 23681 USA

Доп.точки доступа:
Ivanova, G.A.; Ivanov, V.A.; Kukavskaya, E.A.; Soja, A.J.

[Text] / V. I. Kharuk [et al.] // Scand. J. Forest Res. - 2010. - Vol. 25, Is. 5. - P446-454, DOI 10.1080/02827581.2010.509329. - Cited References: 47. - This research was supported by the NASA Science Mission Directorate, Terrestrial Ecology Program, Siberian Branch Russian Academy of Science Program 23.3.33 and grant MK-2497.2009.5. The authors thank Dr V. Miglan for help with the dendrochronology analysis and Dr Joanne Howl for editing this manuscript. . - 9. - ISSN 0282-7581РУБ Forestry

Аннотация: The elevational tree-line change within the transitional zone between boreal forest and Mongolian steppes was quantified for the last millennium. The basic approach included studies along transects and measurements of tree-line positions to identify current, historical, refugee and regeneration tree lines. Tree mortality and natality were determined based on dendrochronology analysis. Tree mortality in the sixteenth to eighteenth centuries coincided with the Little Ice Age, while tree establishment was stimulated by warming at the end of nineteenth century. Downward shifts in tree line varied by an order of magnitude. The current tree-line position reoccupied the historical tree line in some transects, and was below or above the historical line in others. The regeneration line surpassed the historical tree line by 91 +/- 46 m (mean +/- SD). Such a heterogeneous response was attributed to local topoclimatic conditions and sapling recruitment efficiency. A mean annual 1 degrees C increase in temperature was associated with an upward shift of the tree line by about 70 m. The upward migration rate of the current tree line was about 0.8 m year-1 during the last century. The regeneration migration rate was about 2.3 m year-1 over the past three decades. Finally, the transformation of krummholz forms of larch and Siberian pine into arborescent form was documented.

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Держатели документа:
[Kharuk, Vyacheslav I.
Im, Sergey T.
Dvinskaya, Maria L.] VN Sukachev Inst Forest SB RAS, Krasnoyarsk 660036, Russia
[Ranson, Kenneth J.] NASAs Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

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

[Text] / I. P. Panyushkina, D. V. Ovtchinnikov, M. F. Adamenko // Tree-Ring Res. - 2005. - Vol. 61, Is. 1. - P33-42, DOI 10.3959/1536-1098-61.1.33. - Cited References: 23 . - 10. - ISSN 1536-1098РУБ Forestry

Аннотация: We developed a network of tree-ring width chronologies of larch (Larix sibirica Led.) from upper tree-lines of the southeast Altai Mountains, South Siberia. Annual tree-ring variability of chronologies since A.D. 1710 was compared using factor analysis. The factor analysis clustered eight tree-ring chronologies into two groups that were used for compositing chronologies. One resulting composite chronology (A.D. 1582-1994) averaged sites from upper tree-lines in glacier-free areas and another chronology (A.D. 10901999) captured the sites at upper tree-lines in valleys of the Korumdu, Aktru, Yan-Karasu and Kizil-Tash Glaciers (North-Chuya Range). There is no significant difference in the estimated strength of temperature signals (June and July) of the composite chronologies. However, we observed a remarkable contrast in the decadal variability of larch growth between upper tree-lines of glacier-free areas and glacier valleys. The tree-ring growth of larch was coherent among the chronologies for the period A.D. 1582-1725. Suddenly, low-frequency similarity declined around A.D. 1730. The magnitude of differences became more pronounced after A.D. 1775 indicating three periods with opposite growth tendency (1775-1850, 1900-1915 and 1960-1994) that alternated with short periods of coherent growth. We assume that the low-frequency signal in the glacier valley larch chronology accommodates oscillations of both summer temperature and glacier dynamics. The periods of low-frequency departures are consistent with the 19th Century advance and tremendous 20th Century retreat of the glaciers. We argue that expanded glaciers enhance harmful impacts of katabatic wind on larch growth. It appears that employing tree rings from upper tree-lines of glaciated areas for estimation of decadal and centennial variability climatic proxies should be selected with great caution.

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Держатели документа:
Univ Arizona, Tree Ring Res Lab, Tucson, AZ 85721 USA
SB RAS, VN Sukachev Inst Forest, Lab Dentdrochronol, Krasnoyarsk 660048, Russia
Novokusnezk Teacher Training Inst, Novokusnezk 654000, Kemerovoskaya, Russia

Доп.точки доступа:
Panyushkina, I.P.; Ovtchinnikov, D.V.; Adamenko, M.F.

[Text] / A. . Kirdyanov [et al.] // Trees-Struct. Funct. - 2003. - Vol. 17, Is. 1. - P61-69, DOI 10.1007/s00468-002-0209-z. - Cited References: 51 . - 9. - ISSN 0931-1890РУБ Forestry

Аннотация: Wood material for at least 12 larch trees at six sites [Larix sibirica Ldb, Larix gmelinii (Rupr.) Rupr, Larix cajanderi Mayr] near the northern timberline in Siberia was analyzed to investigate influence of climatic factor changes on tree-ring growth at high latitudes. Tree-ring cell size, maximum latewood density and ring width measured by means of image analysis and X-ray radiodensitometry and calculated latewood cell-wall thickness were used. Correlation analysis of tree-ring structure parameter chronologies with temperatures averaged over periods of 5 days (pentad) shows that early summer temperature (mean for 5-6 pentads, depending on the region, starting from the middle of June) and date of snow melt are the most important factors that define seasonal growth and tree-ring structure. Analysis of instrumental climatic data indicates that a positive trend of early summer temperature was combined with winter precipitation (October-April) increase and this combination leads to later snow melt. Based of the results of tree-ring growth modelling, it was shown that later snow melt (hence, delayed initiation of cambial activity and, as a result, decrease of wood production) explains the changes in the relationship between tree ring width and summer temperature dynamics observed after the 1960s for a large area of the Siberian Subarctic. The understanding of the role of winter precipitation in controlling ring growth, through its effect on the timing of cambial activation, suggests the possibility of using ring structure parameters to create reconstructions of past winter precipitation variations.

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Держатели документа:
RAS, SB, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia
Univ Arizona, Tree Ring Res Lab, Tucson, AZ 85721 USA
Swiss Fed Inst Forest Snow & Landscape Res, CH-8903 Birmensdorf, Switzerland

Доп.точки доступа:
Kirdyanov, A...; Hughes, M...; Vaganov, E...; Schweingruber, F...; Silkin, P...

[Text] / M. K. Hughes [et al.] // Holocene. - 1999. - Vol. 9, Is. 5. - P629-634, DOI 10.1191/095968399671321516. - Cited References: 30 . - 6. - ISSN 0959-6836РУБ Geography, Physical + Geosciences, Multidisciplinary

Аннотация: We report unusual twentieth-century early-summer warmth recorded by larch tree-rings at the northern tree-line in far northeastern Eurasia (Yakutia). The tree-ring series are strongly replicated and well suited to the detection of fluctuations on interannual to century timescales. They are strongly correlated with local instrumental temperature data. Mean early-summer temperature in the twentieth century significantly exceeds that of any period of the same length since Ao 1400. A century-scale trend, which commences in the mid-nineteenth century, is superimposed on interannual and decadal fluctuations, for example a marked cooling since 1978. While many of the 20 coolest early summers in the reconstruction occur within a few years after major explosive volcanic eruptions from low-latitude volcanoes, several of the 20 warmest early summers followed major explosive eruptions from high-latitude volcanoes.

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Держатели документа:
Univ Arizona, Tree Ring Res Lab, Tucson, AZ 85721 USA
Russian Acad Sci, Siberian Branch, Inst Forest, Krasnoyarsk 660036, Russia
Russian Acad Sci, Urals Branch, Inst Plant & Anim Ecol, Ekatarinburg 620219, Russia

Доп.точки доступа:
Hughes, M.K.; Vaganov, E.A.; Shiyatov, S...; Touchan, R...; Funkhouser, G...

/ O. V. Sidorova [et al.] // Quaternary Science Reviews. - 2013. - Vol. 73. - P93-102, DOI 10.1016/j.quascirev.2013.05.015 . - ISSN 0277-3791
Аннотация: To answer the question "Has the recent warming no analogues in the Siberian north?" we analyzed larch tree samples (. Larix gmelinii Rupr.) from permafrost zone in the eastern Taimyr (TAY) (72В°N, 102В°E) using tree-ring and stable isotope analyses for the Climatic Optimum Period (COP) 4111-3806 BC and Medieval Warm Period (MWP) 917-1150 AD, in comparison to the recent period (RP) 1791-2008 AD.We developed a description of the climatic and environmental changes in the eastern Taimyr using tree-ring width and stable isotope (?13C, ?18O) data based on statistical verification of the relationships to climatic parameters (temperature and precipitation).Additionally, we compared our new tree-ring and stable isotope data sets with earlier published July temperature and precipitation reconstructions inferred from pollen data of the Lama Lake, Taimyr Peninsula, ?18O ice core data from Akademii Nauk ice cap on Severnaya Zemlya (SZ) and ?18O ice core data from Greenland (GISP2), as well as tree-ring width and stable carbon and oxygen isotope data from northeastern Yakutia (YAK).We found that the COP in TAY was warmer and drier compared to the MWP but rather similar to the RP. Our results indicate that the MWP in TAY started earlier and was wetter than in YAK. July precipitation reconstructions obtained from pollen data of the Lama Lake, oxygen isotope data from SZ and our carbon isotopes in tree cellulose agree well and indicate wetter climate conditions during the MWP.Consistent large-scale patterns were reflected in significant links between oxygen isotope data in tree cellulose from TAY and YAK, and oxygen isotope data from SZ and GISP2 during the MWP and the RP.Finally, we showed that the recent warming is not unprecedented in the Siberian north. Similar climate conditions were recorded by tree-rings, stable isotopes, pollen, and ice core data 6000 years ago. В© 2013 Elsevier Ltd.

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Держатели документа:
Paul Scherrer Institute, 5232 Villigen, Switzerland
V.N. Sukachev Institute of Forest SB RAS, 660036 Krasnoyarsk, Akademgorodok, Russian Federation
Institute of Geology and Minerology, University of Koeln, 50674 Koln, Germany
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Research Unit Potsdam, 14473 Potsdam, Germany

Доп.точки доступа:
Sidorova, O.V.; Saurer, M.; Andreev, A.; Fritzsche, D.; Opel, T.; Naurzbaev, M.M.; Siegwolf, R.

/ V. I. Kharuk [et al.] // Arctic, Antarctic, and Alpine Research. - 2013. - Vol. 45, Is. 4. - P526-537, DOI 10.1657/1938-4246-45.4.526 . - ISSN 1523-0430
Аннотация: The goal of the study was to provide an analysis of climate impact before, during, and after the Little Ice Age (LIA) on the larch (Larix gmelinii) tree line at the northern extreme of Siberian forests. Recent decadal climate change impacts on the tree line, regeneration abundance, and age structure were analyzed. The location of the study area was within the forest-tundra ecotone (elevation range 170-450 m) in the Anabar Plateau, northern Siberia. Field studies were conducted along elevational transects. Tree natality/mortality and radial increment were determined based on dendrochronology analyses. Tree morphology, number of living and subfossil trees, regeneration abundance, and age structure were studied. Locations of pre-LIA, LIA, and post-LIA tree lines and refugia boundaries were established. Long-term climate variables and drought index were included in the analysis. It was found that tree mortality from the 16th century through the beginning of the 19th century caused a downward tree line recession. Sparse larch stands experienced deforestation, transforming into tundra with isolated relict trees. The maximum tree mortality and radial growth decrease were observed to have occurred at the beginning of 18th century. Now larch, at its northern boundary in Siberia, is migrating into tundra areas. Upward tree migration was induced by warming in the middle of the 19th century. Refugia played an important role in repopulation of the forest-tundra ecotone by providing a seed source and shelter for recruitment of larch regeneration. Currently this ecotone is being repopulated mainly by tree cohorts that were established after the 1930s. The last two decades of warming did not result in an acceleration of regeneration recruitment because of increased drought conditions. The regeneration line reached (but did not exceed) the pre-LIA tree line location, although contemporary tree heights and stand densities are comparatively lower than in the pre-LIA period. The mean rate of tree line upward migration has been about 0.35 m yr-1 (with a range of 0.21-0.58), which translates to a tree line response to temperature of about 55 m C-1.

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Держатели документа:
V. N. Sukachev Institute of Forest, Krasnoyarsk 660036, Russian Federation
Goddard Space Flight Center, NASA, Code 618, Greenbelt, MD 20771, United States

Доп.точки доступа:
Kharuk, V.I.; Ranson, K.J.; Im, S.T.; Oskorbin, P.A.; Dvinskaya, M.L.; Ovchinnikov, D.V.

/ J. V. Savva, E. A. Vaganov // Mitigation and Adaptation Strategies for Global Change. - 2006. - Vol. 11, Is. 1. - P269-290, DOI 10.1007/s11027-006-1026-2 . - ISSN 1381-2386
Аннотация: Scots pine provenance trials were established in 1964 in forest-steppe and in 1974 in southern taiga zones of Central Siberia from seeds collected over whole Russia. Tree-ring characteristics (radial growth and density chronologies) from 12 and 16 provenances planted in those plantations were measured densitometrically. Tree-ring analysis revealed a retention of a genetically fixed response to climatic factors proper to pines' origin. Trees from higher latitudes keep the orientation towards accelerated growth at the beginning of a growing season, which is followed by a rapid transition to formation of latewood cells and deceleration of growth earlier, than in medium-latitude trees. Main climatic factors controlling tree-rings formation differed slightly between different provenances within plantations. Genetically fixed ability of the provenances are not great (less than 15%), that proves high adaptability of pines to abrupt climatic change. Tree-ring formation of Scots pine provenances is mainly determined by the environmental factors. В© Springer 2006.

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Держатели документа:
Institute of Forest SB RAS, Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Savva, J.V.; Vaganov, E.A.

/ M. M. Naurzbaev, E. A. Vaganov, O. V. Sidorova // Earth's Cryosphere. - 2003. - Vol. 7, Is. 2. - С. 84-91 . - ISSN 1560-7496
Аннотация: An integral estimation of tree-ring growth spatial-temporal conjugation was carried out based on tree-ring chronology network of subarctic zone of Siberia, Ural and Scandinavia for the last 2000 years. Phase and amplitude disagreements of the annual growth and its decadal fluctuation in different subarctic sectors of Eurasia are changed by synchronous fluctuation when century and longer growth cycles are considered. Long-term changes of radial growth indicate common character of global climatic changes in subarctic zone of Eurasia. Medieval warming occurred from 10 to 12 centuries and 15-century warming were changed by Little Ice Age with the cooling culmination taking place in the 17 century. Current warming which started at the beginning of the 19th-century for the moment does not exceed the amplitude of the medieval warming. The tree-ring chronologies do not indicate unusually abrupt temperature rise during the last century, which could be reliably associated with greenhouse gas increasing in the atmosphere of our planet. Modem period is characterized by heterogeneity of warming effect in subarctic regions of Eurasia. Integral tree-ring chronology of the Northern Eurasia shows well agreement with 18O fluctuations in the ice core obtained for Greenland (GISP2). В© M.M. Naurzbaev, E.A. Vaganov, O.V. Sidorova, 2003.

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Держатели документа:
V.N. Sukachev Institute of Forest, SB RAS, 660036 Krasnoyarsk, Akademgorodok, Russian Federation

Доп.точки доступа:
Naurzbaev, M.M.; Vaganov, E.A.; Sidorova, O.V.

/ V. I. Kharuk [et al.] // Forest Ecology and Management. - 2013. - Vol. 310. - P312-320, DOI 10.1016/j.foreco.2013.08.042 . -
Аннотация: The causes and resulting spatial patterns of Siberian pine mortality in eastern Kuznetzky Alatau Mountains, Siberia were analyzed based on satellite (Landsat, MODIS) and dendrochronology data. Climate variables studied included temperature, precipitation and Standardized Precipitation-Evapotranspiration Index (SPEI) drought index. Landsat data analysis showed that stand mortality was first detected in the year 2006 at an elevation of 650m, and extended up to 900m by the year 2012. Mortality was accompanied by a decrease in MODIS-derived vegetation index (EVI). The area of dead stands and the upper mortality line were correlated with increased drought. The uphill margin of mortality was limited by elevational precipitation gradients. Dead stands (i.e., >75% tree mortality) were located mainly on southern slopes. With respect to slope, mortality was observed within a 7-20В° range with greatest mortality occurring on convex terrain. Tree radial increment measurements correlate and were synchronous with SPEI (r2=0.37, rs=80). The results also showed the primary role of drought stress on Siberian pine mortality. A secondary role may be played by bark beetles and root fungi attacks. The observed Siberian pine mortality is part of a broader phenomenon of "dark needle conifers" (DNC, i.e., Siberian pine, fir and spruce) decline and mortality in European Russia, Siberia, and the Russian Far East. All locations of DNC decline coincided with areas of observed drought increase. The results obtained are one of the first observations of drought-induced decline and mortality of DNC at the southern border of boreal forests. Meanwhile if model projections of increased aridity are correct DNC within the southern part of its areal may be replaced by drought-resistant Pinus silvestris and Larix sibirica. В© 2013 Elsevier B.V.

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

Доп.точки доступа:
Kharuk, V.I.; Im, S.T.; Oskorbin, P.A.; Petrov, I.A.; Ranson, K.J.

/ 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.

/ V. S. Myglan [et al.] // Geogr. Nat. Resour. - 2012. - Vol. 33, Is. 3. - P200-207, DOI 10.1134/S1875372812030031 . - ISSN 1875-3728
Аннотация: We have constructed and analyzed the 1896-year-long tree-ring chronology for the territory of the Altai Republic. The chronology was based on wood of live trees and remains of trunks of Siberian larch (Larix sibirica Ledeb.) from the upper timberline (2300 m) of the Dzhelo river valley. The chronology agrees well with palaeoclimatic data and reflects the main climatic changes in the northern hemisphere for the last two millennia: an extraordinary decrease in increment after the year 536, "mean secular warming", the "Little Ice Age", and current warming. By calculating the response function between the tree-ring chronology for the Dzhelo and data from weather stations, it was possible to reconstruct the series of June-July air temperature variability for the last 1500 years. The chronology can be used in dating archaeological wood, i. e. in determining the calendar time at which archaeological monuments were constructed. В© 2012 Pleiades Publishing, Ltd.

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Держатели документа:
Siberian Federal University, Krasnoyarsk, Russian Federation
Altai State University, Barnaul, Russian Federation
Paul Scherrer Institute, Villigen, Switzerland

Доп.точки доступа:
Myglan, V.S.; Zharnikova, O.A.; Malysheva, N.V.; Gerasimova, O.V.; Vaganov, E.A.; Sidorov, O.V.

[Text] / E. A. Vaganov ; ed.: JS Dean, DM Meko, Meko, D // TREE RINGS, ENVIRONMENT AND HUMANITY : RADIOCARBON, 1996. - International Conference on Tree Rings, Environment and Humanity - Relationship and Processes (MAY 17-21, 1994, TUCSON, AZ). - P73-87. - Cited References: 0 . - 15. - ISBN 0-963831-42-9РУБ Ecology + Forestry + Geosciences, Multidisciplinary

Аннотация: I examine the cellular basis of tree-ring formation and the peculiarities of seasonal growth, and try to systematize the mechanisms that regulate the formation of conifer tree-ring structure. In addition to tree-ring width, some other anatomical data are increasingly being used in dendrochronology, namely cell size and wood density. I attempt to present a conceptual scheme of interaction of processes of xylem cell maturation. This scheme includes external regulation and is adequate for formalization in the form of a simulation model.

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Доп.точки доступа:
Vaganov, E.A.; Dean, JS \ed.\; Meko, DM \ed.\; Meko, D \ed.\

/ A. V. Kirdyanov [et al.] // Contemp. Probl. Ecol. - 2014. - Vol. 7, Is. 6. - P679-684, DOI 10.1134/S1995425514060055 . - ISSN 1995-4255
Аннотация: The radial growth of Siberian larch under the impact of pollutants emitted by enterprises of Norilsk has been analyzed to reconstruct the die-off dynamics of larch stands located along the Rybnaya River, along the main direction of pollutant air transport. Dendrochronological cross dating is used to detect the year of die off of 268 trees growing in 4 sites located 22, 45, 68, and 85 km from Norilsk. The death of individual trees in the sites closest to Norilsk was recorded immediately after the first enterprises started to operate in the early 1940s. The mass mortality of the trees started in the 1960s due to the operation of new smelters and the consequent increase in pollutant emissions. The complete destruction of the stands (100% die off of larch trees) occurred in the 1970s. At the most distant site (85 km), the highest rate of larch death was observed between 1975 and 1980, and in 2004 only 23% of larch trees were alive. A comparative analysis of the tree-ring width of the studied trees testified to the decrease in tree radial growth at the period before the complete degradation of stands. Unfavorable climatic conditions became an additional factor that enhanced the rate of tree die off due to the impact of pollutants. Although the increase in tree radial growth had been found in late 1990s to early 2000s at the site 85 km from Norilsk, the status of studied trees indicated that the area of completely degraded forest ecosystems might become larger under the present conditions.

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Держатели документа:
Sukachev Institute of Forest, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50/28Krasnoyarsk, Russian Federation
Siberian Federal University, pr. Svobodnyi 79Krasnoyarsk, Russian Federation
Stolby State Nature Reserve, ul. Kar’ernaya 26-aKrasnoyarsk, Russian Federation

Доп.точки доступа:
Kirdyanov, A.V.; Myglan, V.S.; Pimenov, A.V.; Knorre, A.A.; Ekart, A.K.; Vaganov, E.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.

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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.

/ E. A. Babushkina [et al.] // Dendrochronologia. - 2016. - Vol. 38. - P26-37, DOI 10.1016/j.dendro.2016.02.005 . - ISSN 1125-7865
Аннотация: The genetic mechanisms underlying the relationship of individual heterozygosity (IndHet) with heterosis and homeostasis are not fully understood. Such an understanding, however, would have enormous value as it could be used to identify trees better adapted to environmental stress. Dendrochronology data, in particular the individual average radial increment growth of wood measured as the average tree ring width (AvTRW) and the variance of tree ring width (VarTRW) were used as proxies for heterosis (growth rate measured as AvTRW) and homeostasis (stability of the radial growth of individual trees measured as VarTRW), respectively. These traits were then used to test the hypothesis that IndHet can be used to predict heterosis and homeostasis of individual trees. Wood core and needle samples were collected from 100 trees of Siberian larch (Larix sibirica Ledeb.) across two populations located in Eastern Siberia. DNA samples were obtained from the needles of each individual tree and genotyped for eight highly polymorphic microsatellite loci. Then mean IndHet calculated based on the genotypes of eight loci for each tree was correlated with the statistical characteristics of the measured radial growth (AvTRW and VarTRW) and the individual standardized chronologies. The analysis did not reveal significant relationships between the studied parameters. In order to account for the strong dependence of the radial growth on tree age the age curves were examined. An original approach was employed to sort trees into groups based on the distance between these age curves. No relationship was found between these groups and the groups formed based on heterozygosity. However, further work with more genetic markers and increased sample sizes is needed to test this novel approach for estimating heterosis and homeostasis. © 2016 Elsevier GmbH.

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Держатели документа:
Khakasia Technical Institute, Siberian Federal University, 27 Shchetinkina St., Abakan, Russian Federation
Siberian Federal University, Pr. Svobodniy 79, Krasnoyarsk, Russian Federation
V.N. Sukachev Institute of Forest, Siberian Branch, Russian Academy of Sciences, Akademgorodok, 50/28, Krasnoyarsk, Russian Federation
Georg-August-University of Gottingen, Busgenweg 2, Gottingen, Germany
N.I. Vavilov Institute of General Genetics, Russian Academy of Sciences, 3 Gubkina St., Moscow, Russian Federation
Texas AandM University, College Station, TX, United States
Institute of Geography, Russian Academy of Sciences, 29 Staromonetniy Pereulok, Moscow, Russian Federation

Доп.точки доступа:
Babushkina, E. A.; Vaganov, E. A.; Grachev, A. M.; Oreshkova, N. V.; Belokopytova, L. V.; Kostyakova, T. V.; Krutovsky, K. V.