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

[Text] / W. C. Shortle [et al.] // J. Biogeogr. - 1995. - Vol. 22: 1st Global Change and Terrestrial Ecosystems Science Conference (MAY 23-27, 1994, WOODS HOLE, MA), Is. 02.03.2013. - P467-473, DOI 10.2307/2845943. - Cited References: 11 . - 7. - ISSN 0305-0270РУБ Ecology + Geography, Physical

Аннотация: Changes in stemwood calcium concentration ([Ca]) for the last 120 years occurred in a common pattern for two sample collections of red spruce (n=33 and 20) from the northeastern United States and for one sample collection of Siberian fir (n=20) from southcentral Siberia, Russia. The [Ca] was measured for wood formed during the periods 1871-90, 1891-1910, 1911-30, 1931-50, 1951-70 and 1971-90. For each core, the relative increase or decrease in [Ca] for adjacent periods of wood formation was recorded. The relative frequency of positive change in [Ca] for each period of wood formation was calculated for the three sample collections. Previous research indicated that under equilibrium conditions, [Ca] in stemwood tended to decrease in more recently formed wood, due to declining numbers of Ca binding sites. Consequently, we expected a low frequency of positive changes in [Ca] in successively formed wood. Consistent with expectation, the relative frequency of positive change from the preceding period to the periods 1891-1910, 1911-30, 1931-50, and 1971-90 were low. Contrary to expectation, the frequency of positive increases in [Ca] more than doubled in 1951-70 compared to 1931-50. The frequency of positive increases in the 1951-70 period relative to the preceding period was 48%, significantly greater than all other periods (P less than or equal to 0.01). The frequencies of positive increases for all other periods were not significantly different from each other (overall mean = 21%, SD = 7). This anomaly in the frequency of positive change in [Ca] in wood formed in 1951-70 relative to wood formed in 1931-50 indicated a perturbation in the ion exchange chemistry of stemwood in two widely separated parts of the northern coniferous forest. This anomaly could be due to external or internal factors. Changes in sap chemistry that affected stemwood chemistry could have been due to changes in the rooting zone. Such changes in rooting zone chemistry could result from the atmospheric deposition of ionic pollutants. Other external factors that could cause the observed anomaly include unusual climatic periods or environmental disturbances such as logging or fire. Internal factors that might produce an anomalously high frequency of positive change of [Ca] include heartwood formation, stemwood infection and a hypersensitive response of the tree against infection.

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Держатели документа:
US FOREST SERV,DURHAM,NH 03824
VV SUKACHEV FOREST INST,KRASNOYARSK 660036,RUSSIA

Доп.точки доступа:
Shortle, W.C.; Smith, K.T.; Minocha, R...; Alexeyev, V.A.

/ I. P. Panyushkina [et al.] // Tree-Ring Res. - 2016. - Vol. 72, Is. 2. - P67-77, DOI 10.3959/1536-1098-72.02.67 . - ISSN 1536-1098
Аннотация: The biogeochemistry and ecology of the Arctic environment have been heavily impacted by anthropogenic pollution and climate change. We used ICP-MS to measure concentrations of 26 elements in the AD 1300-2000 tree rings of larch from the Taymyr Peninsula in northern Siberia for studying the interaction between environmental change and wood chemistry. We applied a two-stage data reduction technique to identify trends in the noisy measurement data. Statistical assessment of variance of normalized time series reveals pronounced depletion of xylem Ca, Mg, Cl, Bi and Si concentrations and enrichment of P, K, Mn, Rb, Sr and Ba concentrations after ca. AD 1900. The trends are unprecedented in the 700-year records, but multiple mechanisms may be at work and difficult to attribute with certainty. The declining xylem Ca and Mg may be a response to soil acidification from air pollution, whereas increasing P, K, and Mn concentrations may signal changes in root efficiency and excess water-soluble minerals liberated by the permafrost thaw. The changes seem consistent with mounting stress on Arctic vegetation. This study supports the potential of tree rings for monitoring past and ongoing changes in biogeochemistry of Arctic ecosystems related to pollution and permafrost thaw. © 2016 by The Tree-Ring Society.

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Держатели документа:
Laboratory of Tree-Ring Research, University of Arizona, 1215 E. Lowell St., Tucson, AZ, United States
Siberian Federal University, 79 Svobodniy Ave., Krasnoyarsk, Russian Federation
Institute of Geography, 29 Staromonetniy Pereulok, Moscow, Russian Federation
Sukachev Institute of Forest SB RAS, Akademgorodok, Krasnoyarsk, Russian Federation
Limnological Institute SB RAS, 3 Ulan-Batorskaya St., Irkutsk, Russian Federation

Доп.точки доступа:
Panyushkina, I. P.; Shishov, V. V.; Grachev, A. M.; Knorre, A. A.; Kirdyanov, A. V.; Leavitt, S. W.; Vaganov, E. A.; Chebykin, E. P.; Zhuchenko, N. A.; Hughes, M. K.

/ V. L. Gavrikov, A. I. Fertikov, R. A. Sharafutdinov, E. A. Vaganov // Dokl. Earth Sci. - 2021. - Vol. 496, Is. 1. - P96-99, DOI 10.1134/S1028334X21010086 . - ISSN 1028-334X
Аннотация: Abstract: The goal was to find out how consistent the elemental distributions in tree rings are. The dataset was received for a long-term afforestation experiment that included even soil conditions and a variety of conifers (Scots pine, Norway spruce, Siberian pine, and Siberian larch) growing in pure stands. The stands are a part of a long-term experiment of the Institute of Forest SB RAS. The experiment is located in the vicinity of Krasnoyarsk city. Relative contents of elements (counts) were received through the scanning facility of Itrax Multiscanner (COX Analytical Systems). Every element was attributed with two variables: concentration of counts and quantity of counts. A cluster analysis was performed in a four-dimensional space of standard deviations and linear slopes of the variables. The elements studied non-randomly distribute over the clusters. Three elements (Ca, Co, and P) display a high consistency of distribution parameters in tree rings as they cluster largely irrespective of species. A few elements (Mn, Pb, Cl, Cr, Ni, Sr, and W) cluster consistently within species. Therefore, for the first time, it was found that the species factor does not affect the distribution of some elements, but significantly affects the distribution of others. © 2021, Pleiades Publishing, Ltd.

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Держатели документа:
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
V.N. Sukachev Institute of Forest, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Gavrikov, V. L.; Fertikov, A. I.; Sharafutdinov, R. A.; Vaganov, E. A.

/ V. L. Gavrikov, A. I. Fertikov, R. A. Sharafutdinov, E. A. Vaganov // Dokl. Earth Sci. - 2021. - Vol. 496, Is. 1. - P96-99, DOI 10.1134/S1028334X21010086. - Cited References:15. - This research was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science, to the research project: "Prognosis of region-specific responses of Siberian mountain forests to global environmental changes and of the landscape development trajectories for mitigation of environmental risks and an effective long-term planning in various economic sectors," grant no. 18-45-240001, and by Russian Foundation for Basic Research to the research project: "Lateholocene dynamics of Asia boreal forests at the background of changing geochemistry and climatic conditions," grant no. 19-05-00091. . - ISSN 1028-334X. - ISSN 1531-8354РУБ Geosciences, Multidisciplinary

Аннотация: The goal was to find out how consistent the elemental distributions in tree rings are. The dataset was received for a long-term afforestation experiment that included even soil conditions and a variety of conifers (Scots pine, Norway spruce, Siberian pine, and Siberian larch) growing in pure stands. The stands are a part of a long-term experiment of the Institute of Forest SB RAS. The experiment is located in the vicinity of Krasnoyarsk city. Relative contents of elements (counts) were received through the scanning facility of Itrax Multiscanner (COX Analytical Systems). Every element was attributed with two variables: concentration of counts and quantity of counts. A cluster analysis was performed in a four-dimensional space of standard deviations and linear slopes of the variables. The elements studied non-randomly distribute over the clusters. Three elements (Ca, Co, and P) display a high consistency of distribution parameters in tree rings as they cluster largely irrespective of species. A few elements (Mn, Pb, Cl, Cr, Ni, Sr, and W) cluster consistently within species. Therefore, for the first time, it was found that the species factor does not affect the distribution of some elements, but significantly affects the distribution of others.

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

Доп.точки доступа:
Gavrikov, V. L.; Fertikov, A. I.; Sharafutdinov, R. A.; Vaganov, E. A.; Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science [18-45-240001]; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [19-05-00091]