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

/ T. T. Efremova [et al.] // Eurasian Soil Sci. - 2013. - Vol. 46, Is. 1. - P51-60, DOI 10.1134/S1064229312120034. - Cited References: 29. - This work was supported by Program no. 26 of the Presidium of the Russian Academy of Sciences Biological Diversity and Project no. 2 of the Siberian Division of the Russian Academy of Sciences. . - 10. - ISSN 1064-2293РУБ Soil Science

Аннотация: A typological series of native Betula pubescens Ehrh. dendrocenoses along the channel of a river crossing a bog was studied. The variability of the mineral element reserves is described by geostatistical methods as the sum of a trend, autocorrelation, and random components. The contribution of deterministic and random components has been assessed in the years with average precipitation and in the year of 2007 with high and long-term flooding. The empirical variograms and the parameters of the model variograms are presented. The class of the spatial correlation of the ash reserves is described. A primary cause of the ash content's variability is the specific water regime, which is determined by the following: (i) the abundance and duration of the spring floods responsible for the silt mass brought by the river and (ii) the draining effect of the intrabog river, the distance from which provided the formation in the forest of the ground cover with the specific species composition and ash content. The falloff of the arboreal layer in the bog birch forests formed the fundamental mineral background of the litter.

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[Efremova, T. T.
Sekretenko, O. P.
Avrova, A. F.
Efremov, S. P.] Russian Acad Sci, Sukachev Inst Forest, Siberian Div, Krasnoyarsk 660036, Russia

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Efremova, T.T.; Sekretenko, O.P.; Avrova, A.F.; Efremov, S.P.

[Text] / M. V. Bryukhanova, E. A. Vaganov, C. . Wirth // Contemp. Probl. Ecol. - 2011. - Vol. 4, Is. 2. - P126-132, DOI 10.1134/S1995425511020020. - Cited References: 33. - This work was supported by RFBR (projects 08-04-00296, 09-05-00900), ADTP project 2.1.1/6131, and Scientific School-65610.2010.4. . - 7. - ISSN 1995-4255РУБ Ecology

Аннотация: This paper analyzes variations in the isotope composition of growth rings in coniferous and deciduous species (Picea obovata L., Pinus sylvestris L., Populus tremula L., Betula pubescens Ehrh.) growing in the extremely continental climate of Central Siberia. The seasonal variation in carbon isotopes in tree rings is shown to differ significantly in different species (with significant synchrony in interannual variability. Species differences are found in the use of reserve assimilates in the formation of tree rings in the early growing season.

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[Bryukhanova, M. V.] Russian Acad Sci, VN Sukachev Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia
[Vaganov, E. A.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Wirth, C.] Univ Leipzig, Inst Biol 1, D-04103 Leipzig, Germany

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Bryukhanova, M.V.; Vaganov, E.A.; Wirth, C...

[Text] / I. V. Tikhonova, V. L. Semerikov // Russ. J. Ecol. - 2010. - Vol. 41, Is. 5. - P372-377, DOI 10.1134/S1067413610050024. - Cited References: 39. - The study was supported by the Krasnoyarsk Regional Science Foundation and Russian Foundation for Basic Research (project no. 07-04-96808) and the Siberian Branch of the Russian Academy of Sciences (project no. 53). . - 6. - ISSN 1067-4136РУБ Ecology

Аннотация: Polymorphism of 11 enzyme systems has been studied in dwarf Scots pine trees occurring on sand dunes and crags in two populations of southern Central Siberia. High genotypic variability of dwarfs and their similarity to normal trees in basic indices of genetic diversity have been revealed. Both populations, including normal and dwarf trees, are in the Hardy-Weinberg equilibrium. The sample of dwarf trees has proved to differ from the "norm" in showing an age-related trend toward decreased heterozygosity. The observed linkage disequilibrium at some pairs of loci can be explained by unequal contributions of trees to population reproduction or by a recent bottleneck event. The populations studied are similar to other Scots pine populations from the Asian part of the species range. Increased frequencies of some rare alleles in the populations from Tuva provide evidence for the probable presence of a glacial refugium for pine in this region.

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[Tikhonova, I. V.] Russian Acad Sci, Siberian Branch, Sukachev Inst Forest, Krasnoyarsk 660036, Akademgorodok, Russia
[Semerikov, V. L.] Russian Acad Sci, Ural Branch, Inst Plant and Anim Ecol, Ekaterinburg 620144, Russia

Доп.точки доступа:
Tikhonova, I.V.; Semerikov, V.L.

[Text] / A. A. Knorre [et al.] // J. Geophys. Res.-Biogeosci. - 2010. - Vol. 115. - Ст. G03002, DOI 10.1029/2009JG000930. - Cited References: 62. - This study was supported by the Swiss National Science Foundation Joint Research Project SCOPES (IB73A0-111134), SCOPES (IB74A0.110950), SNSF (200021_121838), RFBR-CRDF (RUG1-2950-KR-09), and program AVC "Development of the high school science potential" 2.1.1/6131. . - 12. - ISSN 0148-0227РУБ Environmental Sciences + Geosciences, Multidisciplinary

Аннотация: Tree ring width, density, and ratio of stable isotopes (C-13/C-12 and O-18/O-16) in wood and cellulose were determined for larch (Larix sibirica Ledeb.) growing under water deficit conditions in the forest steppe zone in central Siberia (54 degrees 24'N, 89 degrees 57'E) for the period 1850-2005. Dendroclimatic analysis of the chronologies indicated precipitation to be the most important factor determining indicated parameters. Precipitation of June is significantly correlated with tree ring width and maximum density (r = 0.36 and 0.43, p 0.05, respectively). Relations of delta C-13 and delta O-18 to precipitation are similar, but the most important month is July (r

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[Knorre, Anastasia A.
Sidorova, Olga V.
Kirdyanov, Alexander V.] Russian Acad Sci, Siberian Branch, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia
[Siegwolf, Rolf T. W.
Saurer, Matthias
Sidorova, Olga V.] Paul Scherrer Inst, CH-5332 Villigen, Switzerland
[Knorre, Anastasia A.
Vaganov, Eugene A.] Siberian Fed Univ, Dept Forestry, Krasnoyarsk 660041, Russia

Доп.точки доступа:
Knorre, A.A.; Siegwolf, RTW; Saurer, M...; Sidorova, O.V.; Vaganov, E.A.; Kirdyanov, A.V.

[Text] / J. . Esper [et al.] // Glob. Change Biol. - 2010. - Vol. 16, Is. 1. - P386-398, DOI 10.1111/j.1365-2486.2009.01913.x. - Cited References: 70. - We thank F. H. Schweingruber for stimulating discussions. Supported by the European Community project Millennium (grant 017008) and the Swiss National Science Foundation through the National Centre for Competence in Climate Research (NCCR-Climate). . - 13. - ISSN 1354-1013РУБ Biodiversity Conservation + Ecology + Environmental Sciences

Аннотация: Estimates of past climate and future forest biomass dynamics are constrained by uncertainties in the relationships between growth and climatic variability and uncertainties in the instrumental data themselves. Of particular interest in this regard is the boreal-forest zone, where radial growth has historically been closely connected with temperature variability, but various lines of evidence have indicated a decoupling since about the 1960s. We here address this growth-vs.-temperature divergence by analyzing tree-ring width and density data from across Siberia, and comparing 20th century proxy trends with those derived from instrumental stations. We test the influence of approaches considered in the recent literature on the divergence phenomenon (DP), including effects of tree-ring standardization and calibration period, and explore instrumental uncertainties by employing both adjusted and nonadjusted temperature data to assess growth-climate agreement. Results indicate that common methodological and data usage decisions alter 20th century growth and temperature trends in a way that can easily explain the post-1960 DP. We show that (i) Siberian station temperature adjustments were up to 1.3 degrees C for decadal means before 1940, (ii) tree-ring detrending effects in the order of 0.6-0.8 degrees C, and (iii) calibration uncertainties up to about 0.4 degrees C over the past 110 years. Despite these large uncertainties, instrumental and tree growth estimates for the entire 20th century warming interval match each other, to a degree previously not recognized, when care is taken to preserve long-term trends in the tree-ring data. We further show that careful examination of early temperature data and calibration of proxy timeseries over the full period of overlap with instrumental data are both necessary to properly estimate 20th century long-term changes and to avoid erroneous detection of post-1960 divergence.

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[Esper, Jan
Frank, David
Buentgen, Ulf
Verstege, Anne] Swiss Fed Res Inst, WSL, CH-8903 Birmensdorf, Switzerland
[Esper, Jan] Oeschger Ctr Climate Change Res, CH-3012 Bern, Switzerland
[Hantemirov, Rashit M.] Russian Acad Sci, Lab Dendrochronol, Inst Plant & Anim Ecol, Ural Branch, Ekaterinburg 620144, Russia
[Kirdyanov, Alexander V.] RAS, VN Sukachev Inst Forest SB, Krasnoyarsk 660036, Akademgorodok, Russia

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Esper, J...; Frank, D...; Buntgen, U...; Verstege, A...; Hantemirov, R.M.; Kirdyanov, A.V.

[Text] / A. V. Kirdyanov [et al.] // Chem. Geol. - 2008. - Vol. 252, Is. 01.02.2013. - P31-41, DOI 10.1016/j.chemgeo.2008.01.023. - Cited References: 74 . - 11. - ISSN 0009-2541РУБ Geochemistry & Geophysics

Аннотация: We present the first and longest (413 years) dataset on stable carbon isotope ratios in tree-ring cellulose (delta C-13), tree-ring width (TRW), and maximum latewood density (MXD) obtained from larch trees growing on permafrost under continental climate in the Suntar Khayata mountain ridge in Eastern Siberia (Russia). With this first study we calibrate tree-ring parameters against climate quantities, and based on these results assess the potential added value of MXD and especially of delta C-13 complementing TRW analysis for future climate reconstruction purposes. delta C-13 chronologies were corrected for human induced changes in atmospheric CO2 since AD 1800. Two different approaches were compared i) a correction referring merely to the decline in atmospheric delta C-13 (delta C-13(atm)) and ii) a correction additionally accounting for the increase in atmospheric partial pressure of CO2. delta C-13 chronologies are characterized by strong signal strength with only 4 trees representing the population signal at the site (mean inter-series correlation = 0.71 and EPS = 0.90). delta C-13 variation shows low similarity to TRW and MXD, while correlation between TRW and MXD is highly significant. Correlation analysis of tree-ring parameters with gridded instrumental data (Climate Research Unit, CRU TS 2.1) over the AD 1929-2000 calibration period demonstrates that TRW and MXD react as reported from other sites at cold and humid northern latitudes: precipitation plays no significant role, but strong dependencies on monthly mean, maximum and minimum temperatures, particularly of the current summer (June to August), are found (up to r=0.60, p<0.001). Combining instrumental data to a summer season mean (JJA) and TRW and MXD to a growth parameter mean (TRW+MXD), clearly shows the importance of the number of frost days and minimum temperatures during summer (r=0.67, p <0.001) to dominate tree growth and highlights the potential for climate reconstruction. Carbon isotope fixation in tree rings is obviously less controlled by temperature variables. In particular, the frost days and minimum temperature have a much smaller influence on delta C-13 than on tree growth. delta C-13 strongly reacts to current-year July precipitation (r=-0.44, p<0.05) and June-July maximum temperature (r=0.46, p<0.001). All significant (p<0.05) correlation coefficients are higher when using the corrected delta C-13 chronology considering an additional plant physiological response on increasing atmospheric CO2 concentration, than using the chronology corrected for delta C-13(atm) changes alone. Spatial distribution of correlations between tree-ring data and climate variables for Eastern Siberia indicates that the summer temperature regime in the studied region is mostly influenced by Arctic air masses, but precipitation in July seems to be brought out from the Pacific region. Both the combined TRW+MXD record and the (513 C record revealed a high reconstruction potential for summer temperature and precipitation, respectively, particularly on decadal and longer-term scales. (C) 2008 Elsevier B.V. All rights reserved.

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[Kirdyanov, Alexander V.] VN Sukachev Inst Forest SB RAS, Krasnoyarsk 660036, Russia
[Treydte, Kerstin S.] Swiss Fed Res Inst WSL, CH-8903 Birmensdorf, Switzerland
[Nikolaev, Anatolli] Melnikov Inst Permafrost SB RAS Yakutsk, Yakutsk, Russia
[Helle, Gerhard
Schleser, Gerhard H.] ICG V, Inst Chem & Dynam Geosphere, Res Ctr Juelich GmbH, Julich, Germany

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Kirdyanov, A.V.; Treydte, K.S.; Nikolaev, A...; Helle, G...; Schleser, G.H.

[Text] / O. V. Sidorova [et al.] // J. Geophys. Res.-Biogeosci. - 2008. - Vol. 113, Is. G2. - Ст. G02019, DOI 10.1029/2007JG000473. - Cited References: 63 . - 13. - ISSN 0148-0227РУБ Environmental Sciences + Geosciences, Multidisciplinary

Аннотация: We related tree ring width (TRW) and isotopic composition (delta(13)C, delta(18)O) of wood and cellulose from four larch trees (Larix cajanderi Mayr.) to climate parameters. The material was sampled in northeastern Yakutia [70 degrees N-148 degrees E] for the recent (AD 1880-2004) and early Medieval (AD 900-1000) periods. During the recent period June, July, and August air temperatures were positively correlated with delta(13)C and delta(18)O of wood and cellulose, while July precipitation was negatively correlated. Furthermore, the vapor pressure deficit (VPD) of July and August was significantly correlated with delta(13)C of wood and cellulose, but VPD had almost no influence on delta(18)O. Comparative analyses between mean isotope values for the (AD 900-1000) and (AD 1880-2004) periods indicate similar ranges of climatic conditions, with the exception of the period AD 1950-2004. While isotopic ratios in cellulose are reliably related to climatic variables, during some periods those in whole wood showed even stronger relationships. Strong positive correlations between delta(18)O of cellulose and Greenland ice-core (GISP2) data were detected for the beginning of the Medieval period (r = 0.86; p 0.05), indicating the reliability of isotope signals in tree rings for large-scale reconstructions.

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Держатели документа:
[Sidorova, Olga V.
Naurzbaev, Mukhtar M.
Vaganov, Eugene A.] Akademgorodok, VN Sukachev Inst Forest SB RAS, Krasnoyarsk 660036, Russia
[Siegwolf, Rolf T. W.
Saurer, Matthias] Paul Scherrer Inst, CH-5232 Villigen, Switzerland
[Vaganov, Eugene A.] Siberian Fed Univ, Krasnoyarsk, Russia

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

[Text] / A. Y. Larionova, N. V. Yakhneva, A. P. Abaimov // Russ. J. Genet. - 2004. - Vol. 40, Is. 10. - P1127-1133, DOI 10.1023/B:RUGE.0000044756.55722.d8. - Cited References: 32 . - 7. - ISSN 1022-7954РУБ Genetics & Heredity

Аннотация: Within- and among-population diversity of Gmelin larch Larix gmelinii (Rupr.) Rupr. from Evenkia was inferred from data on 17 genes determining allozyme diversity of ten enzymes. More than 50% of the genes proved to be polymorphic. On average, each tree was heterozygous at 9.2% genes. Heterozygosity expected from the Hardy-Weinberg proportions was higher, 12.5%. A deficit of heterozygous genotypes was observed in all populations under study and attributed to inbreeding. With Wright's F statistics, average individual inbreeding was estimated at 26.6% relative to the population (F-IS) and at 27.8% relative to the species (F-IT). The greatest deficit of heterozygosity was observed for the youngest population II. Within- population variation accounted for more than 98% of the total variation, while the contribution of among-population variation was 1.66%. Genetic distance between populations varied from 0.0025 to 0.0042, averaging 0.0035.

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Russian Acad Sci, Sukachev Inst Forestry, Krasnoyarsk 660036, Russia

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Larionova, A.Y.; Yakhneva, N.V.; Abaimov, A.P.

[Text] / O. V. Sidorova [et al.] // Clim. Change. - 2013. - Vol. 120, Is. 01.02.2013. - P153-167, DOI 10.1007/s10584-013-0805-5. - Cited References: 32. - The work was supported by Marie Curie IIF (EU-ISOTREC 235122) awarded to Olga Sidorova, SNSF 200021_121838/1, and SNSF - SCOPES Iz73z0-128035/1, MK-1675.2011.6, Russian Scientific School 5327.2012.4 and RFBR grant 13-05-00620. Neil J. Loader thanks the UK NERC (NE/B501504) and C3W for support. We thank Eugene Vaganov for the suggestions in the manuscript and five reviewers for their constructive and helpful comments. . - 15. - ISSN 0165-0009РУБ Environmental Sciences + Meteorology & Atmospheric Sciences

Аннотация: We present new tree-ring width, delta C-13, and delta O-18 chronologies from the Koksu site (49A degrees N, 86A degrees E, 2,200 m asl), situated in the Russian Altai. A strong temperature signal is recorded in the tree-ring width (June-July) and stable isotope (July-August) chronologies, a July precipitation signal captured by the stable isotope data. To investigate the nature of common climatic patterns, our new chronologies are compared with previously published tree-ring and stable isotope data from other sites in the Altai region. The temperature signal preserved in the conifer trees is strongly expressed at local and regional scales for all studied sites, resulting in even stronger temperature and precipitation signals in combined average chronologies compared to separate chronologies. This enables the reconstruction of June-July and July-August temperatures for the last 200 years using tree-ring and stable carbon isotopes. A July precipitation reconstruction based on oxygen isotopic variability recorded in tree-rings can potentially improve the understanding of hydrological changes and the occurrence of extreme events in the Russian Altai.

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[Sidorova, O. V.
Siegwolf, R. T. W.
Saurer, M.] Paul Scherrer Inst, CH-5232 Villigen, Switzerland
[Myglan, V. S.
Shishov, V. V.] Siberian Fed Univ, Krasnoyarsk 660049, Russia
[Ovchinnikov, D. V.] VN Sukachev Inst Forest SB RAS, Krasnoyarsk 660036, Russia
[Helle, G.] German Ctr GeoSci GFZ, Helmholz Ctr Potsdam, D-14473 Potsdam, Germany
[Loader, N. J.] Swansea Univ, Dept Geog, Swansea SA2 8PP, W Glam, Wales

Доп.точки доступа:
Sidorova, O.V.; Siegwolf, RTW; Myglan, V.S.; Ovchinnikov, D.V.; Shishov, V.V.; Helle, G...; Loader, N.J.; Saurer, M...; Marie Curie IIF [EU-ISOTREC 235122]; SNSF [200021_121838/1]; SNSF - SCOPES [Iz73z0-128035/1, MK-1675.2011.6]; Russian Scientific School [5327.2012.4]; RFBR [13-05-00620]; UK NERC [NE/B501504]; C3W

[Text] / M. N. Evans [et al.] // J. Geophys. Res.-Biogeosci. - 2006. - Vol. 111, Is. G3. - Ст. G03008, DOI 10.1029/2006JG000166. - Cited References: 57 . - 13. - ISSN 0148-0227РУБ Environmental Sciences + Geosciences, Multidisciplinary

Аннотация: We investigate the interpretation of tree-ring data using the Vaganov-Shashkin forward model of tree-ring formation. This model is derived from principles of conifer wood growth, and explicitly incorporates a nonlinear daily timescale model of the multivariate environmental controls on tree-ring growth. The model results are shown to be robust with respect to primary moisture and temperature parameter choices. When applied to the simulation of tree-ring widths from North America and Russia from the Mann et al. (1998) and Vaganov et al. (2006) data sets, the forward model produces skill on annual and decadal timescales which is about the same as that achieved using classical dendrochronological statistical modeling techniques. The forward model achieves this without site-by-site tuning as is performed in statistical modeling. The results support the interpretation of this broad-scale network of tree-ring width chronologies primarily as climate proxies for use in statistical paleoclimatic field reconstructions, and point to further applications in climate science.

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Univ Arizona, Tree Ring Res Lab, Tucson, AZ 85721 USA
Univ Arizona, Dept Geosci, Tucson, AZ 85721 USA
Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY 10964 USA
Russian Acad Sci, Inst Forest, Krasnoyarsk, Russia

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Evans, M.N.; Reichert, B.K.; Kaplan, A...; Anchukaitis, K.J.; Vaganov, E.A.; Hughes, M.K.; Cane, M.A.

[Text] / K. J. Anchukaitis [et al.] // Geophys. Res. Lett. - 2006. - Vol. 33, Is. 4. - Ст. L04705, DOI 10.1029/2005GL025050. - Cited References: 29 . - 4. - ISSN 0094-8276РУБ Geosciences, Multidisciplinary

Аннотация: We use a mechanistic model of tree-ring formation to simulate regional patterns of climate-tree growth relationships in the southeastern United States. Modeled chronologies are consistent with actual tree-ring data, demonstrating that our simulations have skill in reproducing broad-scale patterns of the proxy's response to climate variability. The model predicts that a decrease in summer precipitation, associated with a weakening Bermuda High, has become an additional control on tree ring growth during recent decades. A nonlinear response of tree growth to climate variability has implications for the calibration of tree-ring records for paleoclimate reconstructions and the prediction of ecosystem responses to climate change.

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Univ Arizona, Tree Ring Res Lab, Tucson, AZ 85721 USA
Univ Arizona, Dept Geosci, Tucson, AZ 85721 USA
Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY 10964 USA
Univ Tennessee, Dept Geog, Knoxville, TN 37996 USA
Russian Acad Sci, Inst Forest, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Anchukaitis, K.J.; Evans, M.N.; Kaplan, A...; Vaganov, E.A.; Hughes, M.K.; Grissino-Mayer, H.D.; Cane, M.A.

[Text] / O. S. Pokrovsky [et al.] // Chem. Geol. - 2013. - Vol. 355. - P103-116, DOI 10.1016/j.chemgeo.2013.07.016. - Cited References: 65. - We are grateful to Associate Editor Carla Koretsky for her significant efforts in improving this manuscript and two anonymous reviewers for their helpful and constructive comments. This work was supported by the BIO-GEO-CLIM Mega-grant of the Ministry of Education and Science of the Russian Federation and Tomsk State University (No 14.B25.31.0001), ANR "Arctic Metals", GDRI CAR WET SIB and LIA LEAGE International Laboratories, Grants RFFI 10-05-92513, and 11-04-10056, the CRDF RUG1-2980-KR-10 and Programs of Presidium RAS (No 12-P-5-1021) and UrORAS (No 12-U-5-1034). . - 14. - ISSN 0009-2541РУБ Geochemistry & Geophysics

Аннотация: This work is devoted to the characterization of natural mechanisms of silicon isotope fractionation within Siberian watersheds and predicting the climate warming effect on Si fluxes from the land to the Arctic Ocean. To unravel the different sources of silica generated by basalt weathering in Central Siberia under permafrost and larch deciduous forest conditions, we measured the Si isotopic composition of large and small rivers, surface flow, interstitial soil solutions, plant litter and soils. The average annual discharge-weighted delta Si-30 values of the second largest tributary of the Yenissei River, Nyzhnaya Tunguska and its main northern tributary (Kochechum) are equal to 1.08 +/- 0.10% and 1.67 +/- 0.15%, respectively, while their average annual Si concentrations are very similar (3.46 and 3.50 mg/L, respectively). During summer baseflow, the dissolved Si isotope composition of both large rivers and a small stream ranges between 1.5 and 2.5%. This is much heavier compared to the source basaltic rocks but similar to the fresh litter of Larix gmelinii, the dominating tree species in this region. It could be consistent with litter degradation in the uppermost soil horizons being the dominant source of solutes annually exported by Central Siberian rivers. During spring flood, accounting for 60-80% of annual Si flux, the delta Si-30 of the large rivers' dissolved load decreases by 1-1.5%, thus approaching the value of the bedrock and the silicate suspended matter of the rivers (RSM). This may reflect the dissolution of the silicate suspended load at high water/mineral ratio. The winter delta Si-30 values of the large river dissolved load range between 1.0 and 2.5%. During this period, contributing to <= 10% of the annual Si chemical flux, the interaction between bedrock (porous tuffs) and deep ground waters occurs at a very high solid/solution ratio, leading to the precipitation of isotopically light secondary minerals and enrichment of Si-30 in the fluids that feed the river through the unfrozen flowpaths. Results of this study imply that more than a half of the silica transported by Siberian rivers may transit through the biogenic pool and that, like in other stable basaltic regions, bedrock-water interactions account for a lesser fraction of the silica flux. As a result of projected future climate warming and weathering increases in boreal regions, the delta Si-30 isotopic composition of large Siberian rivers is likely to shift towards less positive values. (c) 2013 Elsevier B.V. All rights reserved.

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[Pokrovsky, O. S.
Schott, J.
Viers, J.] Univ Toulouse, GET CNRS UMR 5563, F-31400 Toulouse, France
[Pokrovsky, O. S.] UroRAS, Inst Ecol Problems North, Arkhangelsk, Russia
[Reynolds, B. C.] Swiss Fed Inst Technol, Inst Geochem & Petr, Zurich, Switzerland
[Prokushkin, A. S.] RAS, Inst Forest, Siberian Branch, Krasnoyarsk, Russia

Доп.точки доступа:
Pokrovsky, O.S.; Reynolds, B.C.; Prokushkin, A. S.; Прокушкин, Анатолий Станиславович; Schott, J.; Viers, J.; BIO-GEO-CLIM Mega-grant of the Ministry of Education and Science of the Russian Federation; Tomsk State University [14.B25.31.0001]; ANR "Arctic Metals"; GDRI CAR WET SIB and LIA LEAGE International Laboratories [RFFI 10-05-92513, 11-04-10056]; CRDF [RUG1-2980-KR-10]; Program of Presidium RAS [12-P-5-1021]; Program of Presidium UrORAS [12-U-5-1034]

[Text] / Y. L. Liu [et al.] // Clim. Change. - 2014. - Vol. 126, Is. 03.04.2014. - P413-427, DOI 10.1007/s10584-014-1234-9. - Cited References: 53. - This research is supported by the NASA Land Use and Land Cover Change program (NASA-NNX09AI26G, NN-H-04-Z-YS-005-N, and NNX09AM55G), the Department of Energy (DE-FG02-08ER64599), the National Science Foundation (NSF-1028291 and NSF- 0919331), the NSF Carbon and Water in the Earth Program (NSF-0630319), and the Dynamics of Coupled Natural and Human Systems (CNH) Program of the NSF (#1313761). We also acknowledge the Global Runoff Data Centre for provision of the gauge station data. Runoff data in Peterson et al. (2002) were obtained from the R-ArcticNet database. A special acknowledgment is made here to Prof. Eric Wood for his generous provision of the ET datasets of Vinukollu et al. (2011), and to Dr. Brigitte Mueller and Dr. Martin Hirsci for the provision of the LandFlux-EVAL dataset of Mueller et al. (2013). Diego Miralles acknowledges the support by the European Space Agency WACMOS-ET project (4000106711/12/I-NB). . - ISSN 0165-0009. - ISSN 1573-1480РУБ Environmental Sciences + Meteorology & Atmospheric Sciences

Аннотация: Northern Eurasian ecosystems play an important role in the global climate system. Northern Eurasia (NE) has experienced dramatic climate changes during the last half of the 20th century and to present. To date, how evapotranspiration (ET) and water availability (P-ET, P: precipitation) had changed in response to the climatic change in this region has not been well evaluated. This study uses an improved version of the Terrestrial Ecosystem Model (TEM) that explicitly considers ET from uplands, wetlands, water bodies and snow cover to examine temporal and spatial variations in ET, water availability and river discharge in NE for the period 1948-2009. The average ET over NE increased during the study period at a rate of 0.13 mm year(-1) year(-1). Over this time, water availability augmented in the western part of the region, but decreased in the eastern part. The consideration of snow sublimation substantially improved the ET estimates and highlighted the importance of snow in the hydrometeorology of NE. We also find that the modified TEM estimates of water availability in NE watersheds are in good agreement with corresponding measurements of historical river discharge before 1970. However, a systematic underestimation of river discharge occurs after 1970 indicates that other water sources or dynamics not considered by the model (e.g., melting glaciers, permafrost thawing and fires) may also be important for the hydrology of the region.

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Держатели документа:
[Liu, Yaling
Zhuang, Qianlai
He, Yujie] Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA
[Zhuang, Qianlai] Purdue Univ, Dept Agron, W Lafayette, IN 47907 USA
[Pan, Zhihua] China Agr Univ, Coll Resources & Environm Sci, Beijing 100094, Peoples R China
[Miralles, Diego] Univ Ghent, Lab Hydrol & Water Management, B-9000 Ghent, Belgium
[Miralles, Diego] Univ Bristol, Sch Geog Sci, Bristol, Avon, England
[Tchebakova, Nadja] Russian Acad Sci, Siberian Branch, VN Sukachev Inst Forest, Krasnoyarsk, Russia
[Kicklighter, David
Melillo, Jerry] Marine Biol Lab, Ctr Ecosyst, Woods Hole, MA 02543 USA
[Chen, Jiquan] Michigan State Univ, CGCEO Geog, E Lansing, MI 48824 USA
[Sirin, Andrey] Acad Sci, Lab Peatland Forestry & Ameliorat, Inst Forest Sci, Uspenskoye, Moscow Oblast, Russia
[Zhou, Guangsheng] Chinese Acad Sci, Inst Bot, Beijing, Peoples R China
ИЛ СО РАН

Доп.точки доступа:
Liu, Y.L.; Zhuang, Q.L.; Pan, Z.H.; Miralles, D...; Tchebakova, N...; Kicklighter, D...; Chen, J.Q.; Sirin, A...; He, Y.J.; Zhou, G.S.; Melillo, J...; NASA Land Use and Land Cover Change program [NASA-NNX09AI26G, NN-H-04-Z-YS-005-N, NNX09AM55G]; Department of Energy [DE-FG02-08ER64599]; National Science Foundation [NSF-1028291, NSF- 0919331]; NSF Carbon and Water in the Earth Program [NSF-0630319]; Dynamics of Coupled Natural and Human Systems (CNH) Program of the NSF [1313761]; European Space Agency WACMOS-ET project [4000106711/12/I-NB]

[Text] / V. Shishov [et al.] // WATER RESOURCES, FOREST, MARINE AND OCEAN ECOSYSTEMS, SGEM 2015, VOL II : STEF92 TECHNOLOGY LTD, 2015. - 15th International Multidisciplinary Scientific Geoconference (SGEM) (JUN 18-24, 2015, Albena, BULGARIA). - P537-544. - (International Multidisciplinary Scientific GeoConference-SGEM). - Cited References:15 . -
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.

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Держатели документа:
Siberian Fed Univ, Krasnoyarsk, Russia.
SB RAS, Sukachev Inst Forest, Krasnoyarsk, Russia.

Доп.точки доступа:
Shishov, Vladimir; Ovchinnikov, Dmitriy; Koiupchenko, Irina; Tychkov, Ivan; Ovchinnikov, Svjatoslav

/ E. I. Ponomarev, T. V. Ponomareva, A. S. Prokushkin // Water. - 2019. - Vol. 11, Is. 6, DOI 10.3390/w11061146. - Cited References:37. - This research was funded by the Russian Foundation for Basic Research (RFBR) grant number 17-04-00589 "Radiometric method for quantitative analysis of soils structure organization", RFBR and Government of the Krasnoyarsk krai, and Krasnoyarsk krai Foundation for Research and Development Support, grant number 18-41-242003 "Modeling and satellite monitoring of effects from thermal anomalies of the underlying surface in the seasonally thawed soil layer of the permafrost zone of Siberia" and grant number 18-05-60203-Arktika "Landscape and hydrobiological controls on the transport of terrigenic carbon to the Arctic Ocean". . - ISSN 2073-4441РУБ Water Resources

Аннотация: This study demonstrates the dependence between the forest burning rates and abnormal decrease in Siberian river discharges under the conditions of the permafrost zone. Our study area is in Central Siberia and Eastern Siberia/Yakutia. Four rivers (Podkamennaya Tunguska, Lower Tunguska, Aldan, and Viluy) were selected for the study. We analyzed the long-term and seasonal variation of river discharges (archive of The Global Runoff Data Centre for 1939-2015) together with the forest burning dynamics within the river basins (archive of Sukachev Institute of Forest for 1996-2015). We compared the discharges per year with the 77-year average value. Abnormally low levels of discharge constituted 58-78% of the averaged annual rate. An analysis of available chronologies of extreme fire events and relative burned areas (RBAs) showed a high correlation with intra-seasonal data on the runoff minima. The most significant response of river discharges to the wildfire effect was shown for the late summer/autumn season after extreme wildfires during the summer period. The deficit of the runoff was not explained by a low precipitation. Late summer and autumn anomalies of discharge were typical (r = -0.57...-0.77, p < 0.05) for rivers of Central Siberia in seasons of extreme forest burning. The correlation was lower for rivers of Eastern Siberia/Yakutia.

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Scopus

Держатели документа:
RAS, Fed Res Ctr, VN Sukachev Inst Forest SB, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Ecol & Geog, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Ponomarev, Evgenii I.; Ponomareva, Tatiana V.; Prokushkin, Anatoly S.; Russian Foundation for Basic Research (RFBR) [17-04-00589]; Krasnoyarsk krai Foundation for Research and Development Support [18-41-242003, 18-05-60203-Arktika]; Government of the Krasnoyarsk krai

/ A. V. Makhnykina, A. S. Prokushkin, O. V. Menyailo [et al.] // Russ. J. Ecol. - 2020. - Vol. 51, Is. 1. - P46-56, DOI 10.1134/S1067413620010063. - Cited References:35. - This study was supported by the Russian Foundation for Basic Research, project nos. 17-05-01257 and 18-34-00736. . - ISSN 1067-4136. - ISSN 1608-3334РУБ Ecology

Аннотация: Soil CO2 emission is one of the most important components of the global carbon cycle. This study analyzes the seasonal dynamics of soil emission for various land cover types in the middle taiga subzone of central Siberia during five growing seasons. It is shown that, throughout a vast area covered by pine forests and their derivatives formed on sandy soils, seasonal CO2 emission values are determined primarily by the moisture conditions and only secondarily by the temperature regime and ecosystem type. The effect of the forest type is manifested only under the most favorable moisture conditions. A new approach is proposed: divide the growing season into dry and moist periods depending on the threshold soil moisture for areas with different vegetation types.

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Держатели документа:
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Sukachev Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Makhnykina, A. V.; Prokushkin, A. S.; Menyailo, O. V.; Verkhovets, S. V.; Tychkov, I. I.; Urban, A. V.; Rubtsov, A. V.; Koshurnikova, N. N.; Vaganov, E. A.; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [17-05-01257, 18-34-00736]

/ L. V. Belokopytova, P. Fonti, E. A. Babushkina [et al.] // Forests. - 2020. - Vol. 11, Is. 12. - Ст. 1294, DOI 10.3390/f11121294. - Cited References:53. - 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 the Russian Foundation for Basic Research, grant number 19-04-00274; and the Russian Science Foundation, grant number 19-18-00145. . - ISSN 1999-4907РУБ Forestry

Аннотация: Research Highlights: This study emphasized the importance of multi-parameter analyses along ecological gradients for a more holistic understanding of the complex mechanism of tree-ring formation. Background and Objectives: The analysis of climatic signals from cell anatomical features measured along series of tree-rings provides mechanistic details on how environmental drivers rule tree-ring formation. However, the processes of cell development might not be independent, limiting the interpretation of the cell-based climatic signal. In this study, we investigated the variability, intercorrelations and climatic drivers of wood anatomical parameters, resulting from consequent cell developmental processes. Materials and Methods: The study was performed on thin cross-sections from wood cores sampled at similar to 1.3 m stem height from mature trees of Pinus sylvestris L. growing at five sampling sites along an ecological gradient from cold and wet to hot and dry within continental Southern Siberia. Tracheid number per radial file, their diameters and wall thicknesses were measured along the radial direction from microphotographs for five trees per site. These parameters were then averaged at each site for earlywood and latewood over the last 50 tree rings to build site chronologies. Their correlations among themselves and with 21-day moving climatic series were calculated. Results: Our findings showed that wood formation was not simply the result of environmentally driven independent subprocesses of cell division, enlargement and wall deposition. These processes appear to be interconnected within each zone of the ring, as well as between earlywood and latewood. However, earlywood parameters tend to have more distinctive climatic responses and lower intercorrelations. On the other hand, there are clear indications that the mechanisms of cell division and enlargement share similar climatic drivers and are more sensitive to water limitation than the process of wall deposition. Conclusions: Indications were provided that (i) earlywood formation left a legacy on latewood formation, (ii) cell division and enlargement shared more similar drivers between each other than with wall deposition, and (iii) the mechanism of cell division and enlargement along the gradient switch from water to heat limitations at different thresholds than wall deposition.

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Держатели документа:
Siberian Fed Univ, Khakass Tech Inst, Abakan 655017, Russia.
Swiss Fed Res Inst Forest Snow & Landscape Res WS, CH-8903 Birmensdorf, Switzerland.
Siberian Fed Univ, Insitute Ecol & Geog, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Sukachev Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Belokopytova, Liliana, V; Fonti, Patrick; Babushkina, Elena A.; Zhirnova, Dina F.; Vaganov, Eugene A.; Ministry of Science and Higher Education of the Russian Federation [FSRZ-2020-0010]; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [19-04-00274]; Russian Science FoundationRussian Science Foundation (RSF) [19-18-00145]

/ U. Buntgen, K. Allen, K. J. Anchukaitis [et al.] // Nat. Commun. - 2021. - Vol. 12, Is. 1. - Ст. 3411, DOI 10.1038/s41467-021-23627-6. - Cited References:60. - R. Neukom kindly provided the re-scaled PAGES 2k data. U.B. and J.E. received funding from SustES: Adaptation strategies for sustainable ecosystem services and food security under adverse environmental conditions (CZ.02.1.01/0.0/0.0/16_019/0000797), and the ERC project MONOSTAR (AdG 882727). C.C., S.G. and M.S. received funding from the SNF Sinergia project CALDERA (project no. 183571). S.C. acknowledges support from US National Science Foundation grants 1737918, 1939916 and 1939956. . - ISSN 2041-1723РУБ Multidisciplinary Sciences

Аннотация: Tree-ring chronologies underpin the majority of annually-resolved reconstructions of Common Era climate. However, they are derived using different datasets and techniques, the ramifications of which have hitherto been little explored. Here, we report the results of a double-blind experiment that yielded 15 Northern Hemisphere summer temperature reconstructions from a common network of regional tree-ring width datasets. Taken together as an ensemble, the Common Era reconstruction mean correlates with instrumental temperatures from 1794-2016 CE at 0.79 (p0.001), reveals summer cooling in the years following large volcanic eruptions, and exhibits strong warming since the 1980s. Differing in their mean, variance, amplitude, sensitivity, and persistence, the ensemble members demonstrate the influence of subjectivity in the reconstruction process. We therefore recommend the routine use of ensemble reconstruction approaches to provide a more consensual picture of past climate variability. Tree rings are a crucial archive for Common Era climate reconstructions, but the degree to which methodological decisions influence outcomes is not well known. Here, the authors show how different approaches taken by 15 different groups influence the ensemble temperature reconstruction from the same data.

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Держатели документа:
Univ Cambridge, Dept Geog, Cambridge, England.
Swiss Fed Res Inst WSL, Birmensdorf, Switzerland.
Global Change Res Ctr CzechGlobe, Brno, Czech Republic.
Masaryk Univ, Fac Sci, Dept Geog, Brno, Czech Republic.
Univ Melbourne, Sch Ecosyst & Forest Sci, Richmond, Australia.
Univ NSW, ARC Ctr Excellence Australian Biodivers & Herita, Sydney, NSW, Australia.
Univ Arizona, Sch Geog Dev & Environm, Tucson, AZ USA.
Univ Arizona, Lab Tree Ring Res, Tucson, AZ USA.
Univ Quebec Rimouski, Dept Biol Chem & Geog, Rimouski, PQ, Canada.
Univ Quebec Montreal, Dept Geog, Montreal, PQ, Canada.
Univ Quebec Montreal, GEOTOP, Montreal, PQ, Canada.
Univ Laval, Ctr Etud Nord, Quebec City, PQ, Canada.
Friedrich Alexander Univ Erlangen Nurnberg, Inst Geog, Erlangen, Germany.
Univ Minnesota, Sch Stat, Minneapolis, MN 55455 USA.
Siberian Fed Univ, Inst Ecol & Geog, Krasnoyarsk, Russia.
Univ Clermont Auvergne, Geolab UMR 6042 CNRS, Clermont Ferrand, France.
Univ Geneva, Inst Environm Sci, Geneva, Switzerland.
Univ Quebec Abitibi Temiscamingue, GREMA, Amos, PQ, Canada.
Univ Quebec Abitibi Temiscamingue, Forest Res Inst, Amos, PQ, Canada.
Aix Marseille Univ, Coll France, CEREGE, INRA,CNRS,IRD, Aix En Provence, France.
Stockholm Univ, Bolin Ctr Climate Res, Dept Phys Geog, Stockholm, Sweden.
Nat Resources Inst Finland, Rovaniemi, Finland.
Harvard Univ, Dept Earth & Planetary Sci, 20 Oxford St, Cambridge, MA 02138 USA.
Sukachev Inst Forest SB RAS, Krasnoyarsk, Russia.
Potsdam Inst Climate Impact Res PIK, Potsdam, Germany.
Siberian Fed Univ, Inst Humanities, Krasnoyarsk, Russia.
Univ Innsbruck, Dept Geog, Innsbruck, Austria.
McDonald Inst Archaeol Res, Cambridge, England.
Johannes Gutenberg Univ Mainz, Dept Geog, Mainz, Germany.
Gothenburg Univ, Dept Earth Sci, Gothenburg, Sweden.
San Francisco State Univ, Dept Earth & Climate Sci, San Francisco, CA 94132 USA.
Univ Geneva, Dept Earth Sci, Geneva, Switzerland.
Univ Geneva, Dept FA Forel Environm & Aquat Sci, Geneva, Switzerland.
Univ Minnesota, Dept Geog Environm & Soc, Minneapolis, MN USA.
SUNY Albany, Dept Atmospher & Environm Sci, Albany, NY 12222 USA.
Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou, Peoples R China.
Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China.
Acad Plateau Sci & Sustainabil, Qinghai Res Ctr Qilian Mt Natl, Xining, Peoples R China.
Qinghai Normal Univ, Xining, Peoples R China.
Univ St Andrews, Sch Earth & Environm Sci, St Andrews, Fife, Scotland.
Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY USA.
Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou, Peoples R China.

Доп.точки доступа:
Buntgen, Ulf; Allen, Kathy; Anchukaitis, Kevin J.; Arseneault, Dominique; Boucher, Etienne; Brauning, A.; Chatterjee, Snigdhansu; Cherubini, Paolo; Churakova, Olga, V; Corona, Christophe; Gennaretti, Fabio; Griessinger, Jussi; Guillet, Sebastian; Guiot, Joel; Gunnarson, Bjoern; Helama, Samuli; Hochreuther, Philipp; Hughes, Malcolm K.; Huybers, Peter; Kirdyanov, Alexander, V; Krusic, Paul J.; Ludescher, Josef; Meier, Wolfgang J-H; Myglan, Vladimir S.; Nicolussi, Kurt; Oppenheimer, Clive; Reinig, Frederick; Salzer, Matthew W.; Seftigen, Kristina; Stine, Alexander R.; Stoffel, Markus; St George, Scott; Tejedor, Ernesto; Trevino, Aleyda; Trouet, Valerie; Wang, Jianglin; Wilson, Rob; Yang, Bao; Xu, J.; Esper, Jan; Anchukaitis, Kevin; SustES: Adaptation strategies for sustainable ecosystem services and food security [CZ.02.1.01/0.0/0.0/16_019/0000797]; ERC project MONOSTAR [AdG 882727]; SNF Sinergia project CALDERA [183571]; US National Science FoundationNational Science Foundation (NSF) [1737918, 1939916, 1939956]

/ 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.

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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]

/ E. I. Parfenova, N. A. Kuzmina, S. R. Kuzmin, N. M. Tchebakova // Forests. - 2021. - Vol. 12, Is. 8. - Ст. 1097, DOI 10.3390/f12081097. - Cited References:45. - The authors acknowledge the support from the RFBR Project #20-05-00540 and partially from Project #19-45-240004, funded by the Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science. . - ISSN 1999-4907РУБ Forestry

Аннотация: Research highlights: We investigated bioclimatic relationships between Scots pine seed mass and seed zones/climatypes across its range in Russia using extensive published data to predict seed zones and seed mass distributions in a changing climate and to reveal ecological and genetic components in the seed mass variation using our 40-year common garden trial data. Introduction: seed productivity issues of the major Siberian conifers in Asian Russia become especially relevant nowadays in order to compensate for significant forest losses due to various disturbances during the 20th and current centuries. Our goals were to construct bioclimatic models that predict the seed mass of major Siberian conifers (Scots pine, one of the major Siberian conifers) in a warming climate during the current century. Methods: Multi-year seed mass data were derived from the literature and were collected during field work. Climate data (January and July data and annual precipitation) were derived from published reference books on climate and climatic websites. Our multiple regression bioclimatic models were constructed based on the climatic indices of growing degree days > 5 degrees C, negative degree days < 0 degrees C, and annual moisture index, which were calculated from January and July temperatures and annual precipitation for both contemporary and future climates. The future 2080 (2070-2100) January and July temperatures and annual precipitation anomalies were derived from the ensemble of twenty CMIP5 (the Coupled Model Intercomparison Project, Phase 5) global circulation models (GCMs) and two scenarios using a mild RCP (Representative Concentration Pathway) 2.6 scenario and an extreme RCP 8.5 scenario. Results: Site climate explained about 70% of the seed mass variation across the Scots pine range. Genetic components explained 30% of the seed mass variation, as per the results from our common garden experiment in south central Siberia. Seed mass varied within 3.5 g (min) and 10.5 g (max) with the mean 6.1 g (n = 1150) across Russia. Our bioclimatic seed mass model predicted that a July temperature elevated by 1 degrees C increased seed mass by 0.56 g, and a January temperature elevated by 5 degrees C increased seed mass by 0.43 g. The seed mass would increase from 1 g to 4 g in the moderate RCP 2.6 and the extreme RCP 8.5 climates, respectively. Predicted seed zones with heavier seed would shift northwards in a warming climate. However, the permafrost border would halt this shifting due to slower permafrost thawing; thus, our predicted potential for Scots pine seed zones and seed mass would not be realized in the permafrost zone in a warmed climate. Our common garden experiment in central Siberia showed that trees of northerly origins produced lighter seeds than local trees but heavier ones than the trees at the original site. Trees of southerly origins produced heavier seeds than local trees but lighter seeds than the trees at the original site. Conclusions: The findings from this study could serve as blueprints for predicting new landscapes with climatic optima for Pinus sylvestris to produce better quality seeds to adjust to a warming climate.

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Держатели документа:
Sukachev Inst Forest FRC KSC SB RAS, Lab Forest Monitoring, Krasnoyarsk 660036, Russia.
Sukachev Inst Forest FRC KSC SB RAS, Lab Forest Genet & Breeding, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Parfenova, Elena, I; Kuzmina, Nina A.; Kuzmin, Sergey R.; Tchebakova, Nadezhda M.; RFBRRussian Foundation for Basic Research (RFBR) [20-05-00540]; Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science [19-45-240004]