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

/ P. P. Bobrov [et al.] // Progress in Electromagnetics Research Symposium. - 2011. - Progress in Electromagnetics Research Symposium, PIERS 2011 Suzhou (12 September 2011 through 16 September 2011, Suzhou) Conference code: 88875. - P121-124 . -
Аннотация: The results of in situ measurements of radiobrightness temperature at the frequency 1.4 GHz and soil moisture in the surface layer of the test area located in Western Siberia near Omsk are given. It is shown that at low soil moisture these data are in satisfactory agreement with the SMOS data of the levels 1c and 2. In addition, correlation analysis between the topsoil moisture provided with the SMOS, on the one hand, and the forest fire danger index derived on the basis of rainfalls and temperatures recorded by the net of weather stations located in the area of the city of Krasnoyarsk Eastern Siberia was carried out. This effort was made to investigate if the SMOS data can be used to estimate forest fire danger over the areas where no weather stations are availabe. The correlation analysis showed good relationships between SMOS soil moisture data and fire danger indices.

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Держатели документа:
Omsk State Pedagogical University, Omsk, Russian Federation
Kirensky Institute of Physics, SB RAS, Krasnoyarsk, Russian Federation
Sukachev Institute of Forest, SB RAS, Krasnoyarsk, Russian Federation
Reshetnev Aerospace State University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Bobrov, P.P.; Kondratieva, O.V.; Mironov, V.L.; Shvetsov, E.; Sukhinin, A.I.; Yashchenko, A.S.

/ A. Darin [et al.] // Int. Multidisciplinary Sci. Geoconf. Surveying Geology Mining Ecology Manage., SGEM. - 2013. - 13th International Multidisciplinary Scientific Geoconference and EXPO, SGEM 2013 (16 June 2013 through 22 June 2013, Albena) Conference code: 102053. - P793-796, DOI 10.5593/SGEM2013/BD4/S19.037 . -
Аннотация: The method analytical microstratigraphy of lacustrine sediments allows to obtain paleoclimatic information fundamentally new quality was tested on a model object - Lake Teletskoe (Gorny Altai). Teletskoe lake bottom sediments were studied by scanning X-ray microprobe using synchrotron radiation from VEPP-3 (INP SB RAS, Novosibirsk) with an annual time resolution on the time interval of 1500 years. Data on the distribution of isotopes Cs-137, Pb-210, C-14 were used to create an age model: core depth - age. Using this model were constructed time series of sediment cores composition changes. To obtain the time series used a scanning X-ray analysis on synchrotron radiation with 100 micron spatial resolution. At each point of the core at the same time determines the content of more than 20 trace elements: K, Ca, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, Ga, As, Se, Br, Rb, Sr, Y, Zr, Nb, Mo, Ba, Pb, Th, U. Terrigenous elements (Ti, V, Cr, Rb, Y, Th) reflect changes in precipitation in the catchment. Organogenic elements (Br, Zn, U) are more associated with regional temperature changes. The ratio of Rb/Sr shows the size of the particles and associated with spring flooding dynamics. The resulting time series were processed by mathematical methods, including the Hilbert-Huang transformation. Was found a set of cyclical changes in litho-geochemical indicators in the Lake Teletskoe sediments with periods of 3.5±0.3; 8.8±0.9; 18.9±2.0; 37.8±1.6; 86±10; 164±15; 346±30; 596±71 and 993 years. Found cycles can be used to predict climate change in nearest decades. © SGEM2013 All Rights Reserved by the International Multidisciplinary Scientific GeoConference SGEM.

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Держатели документа:
Institute of Geology and Mineralogy, SB RAS, Novosibirsk, Russian Federation
Institute of Solar-Terrestrial Physics, SB RAS, Irkutsk, Russian Federation
Sukachev Institute of Forest, SB RAS, Krasnoyarsk, Russian Federation
Budker Institute of Nuclear Physics, SB RAS, Novosibirsk, Russian Federation

Доп.точки доступа:
Darin, A.; Kalugin, I.; Mordvinov, A.; Ovchinnikov, D.; Rakshun, Y.; Darin, B.F.; Maksimov, M.; Sorokoletov, D.

/ D. Ovchinnikov [et al.] // International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM. - 2014. - Vol. 1: 14th International Multidisciplinary Scientific Geoconference and EXPO, SGEM 2014 (17 June 2014 through 26 June 2014, ) Conference code: 109699. - P321-324 . -
Аннотация: A solar-terrestrial relations were examined using millennium-scale paleoclimatic data from the Central Asia mountain region. The paleoclimatic data were based on nonvarved lake sediments of the Teletskoye lake and temperature-sensitive long tree-ring width chronologies from the Altai region (Altai Mountains, South Siberia, Russia) in the late Holocene (2000 years). Also a solar-activity during late Holocene was used to analyze. Core of the bottom sediments from the Teletskoe lake (Altai Mountains) were investigated using scanning X-ray fluorescent analysis method with synchrotron radiation (spatial resolution is 0.1 mm). A method ensemble empirical mode decomposition (EEMD) was used to extract low-frequency variability from all presented paleoarchives. The results obtained for paleodata indicate palaeoclimatic oscillations in the range of the de Vries (Suess) (?200-year) solar cycles through the late Holocene. Evidence of the influence of solar activity on global climatic processes and terrestrial ecosystems is discussed.

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Держатели документа:
Institute of Forest SB RASKrasnoyarsk, Russian Federation
Institute of Solar-Terrestrial Physics SB RASIrkutsk, Russian Federation
Institute of Geology SB RASNovosibirsk, Russian Federation
Siberian Federal UniversityKrasnoyarsk, Russian Federation

Доп.точки доступа:
Ovchinnikov, D.; Mordvinov, A.; Kalugin, I.; Darin, A.; Myglan, V.

/ D. Ovchinnikov, L. Lyu, A. Kirdyanov // 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. - P491-498 . -
Аннотация: Comparison of the long tree-ring series from different regions is important to understand low frequency climate variability over large regions, but it is difficult to identify common low frequency periodicity and their causes. A Hilbert-Huang transform method (HHT) was used to exam two regional temperature sensitive tree-ring width chronologies in the northern Siberia and Altai Mountains. Seven empirical modes were calculated for each tree-ring width chronology to represent high-, mid- and low-frequency signals. A low-frequency variability have identified the common 100-200-year long cycles for the regions. The cyclicity in tree radial growth is likely to be associated with solar periodicity (Gleissberg and Suess cycles). Thus, common decrease of tree-ring radial growth in the two regions around 1700 AD is possibly a result of reduced solar activity (Maunder minimum). The use of HHT method can provide the basis to extract low frequency in climate variability for remote regions to understand better global climate change. © SGEM2015 All Rights Reserved.

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Держатели документа:
Sukachev Institute of Forest, SB RAS, Krasnoyarsk, Russian Federation
Institute of Botany, CAS, Beijing, China

Доп.точки доступа:
Ovchinnikov, D.; Lyu, L.; Kirdyanov, 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.

/ L. Mukhortova [et al.] // International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM : International Multidisciplinary Scientific Geoconference, 2017. - Vol. 17: 17th International Multidisciplinary Scientific Geoconference, SGEM 2017 (29 June 2017 through 5 July 2017, ) Conference code: 130796, Is. 32. - P829-836, DOI 10.5593/sgem2017/32/S13.107 . -
Аннотация: The aim of this study was experimental assessing the emission of greenhouse gasses (CO2, CH4) from decomposed coarse woody debris in northern boreal forests of Siberia, where the main forest-forming species is larch (Larix gmelinii (Rupr.) Rupr.). Logs samples were collected in northern boreal larch forests of Central Evenkia (64°N, 100°E) at different stages of decomposition and placed in gas-tight boxes. Gas samples were measured in dynamics: at the beginning of the experiment and after 3 hour, 24 hours, after 3 and 6 days of incubation using Picarro G2201-i analyzer. Totally 12 samples were measured. Samples were divided into the three decay classes, based on visual and physical properties. The main basis for division is wood density and presence of bark and branches: decomposition class I - wood has not lost its solidity, stems have bark and branches; decomposition class II - wood has lost some of its solidity, bark easily flakes from wood, but bark and branches are presented on the stems; decomposition class III - wood has almost fully lost its initial solidity, some bark and large branches remain on the stems. It was found that carbon dioxide concentration increased gradually during incubation for logs at all decomposition stages. Coarse woody debris at early stages of decomposition produced 3.3-11.4 µg CO2 cm-3 h-1 for the decomposition class I and 1.9-6.2 µg CO2 cm-3 h-1 for the decomposition class II. Flux of carbon dioxide from coarse woody debris at the advanced stage of decomposition (decomposition class III) was significantly higher and comprised 0.9-12.4 µg CO2 cm-3 h-1. Carbon dioxide emission showed close correlation with temperature, class of decomposition and on type of rot (white or brown rot fungi consortia decomposed logs). Concentration of methane showed gradual increase of its concentration during 6 days incubation (from 1.84 to 2.87 and 3.57 ppm for I and II decomposition classes).Rate of methane increasing was dependent on temperature. If at the temperature +5°C increasing of methane concentration was slow and was observed only for decomposition class I and II, at the temperature +25°C logs of all decomposition classes increased concentration of methane from 1.82-1.84 ppm of the initial measurement to 2.06-2.87 ppm after the 6 days of incubation. © SGEM2017. All Rights Reserved.

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

Доп.точки доступа:
Mukhortova, L.; Evgrafova, S.; Meteleva, M.; Krivobokov, L.

/ I. Danilova, V. Ryzhkova, M. Korets // International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM : International Multidisciplinary Scientific Geoconference, 2017. - Vol. 17: 17th International Multidisciplinary Scientific GeoConference, SGEM 2017 (29 June 2017 through 5 July 2017, ) Conference code: 130790, Is. 23. - P633-640, DOI 10.5593/sgem2017/23/S11.079 . -
Аннотация: This study focused on developing a multilevel system of spatial analysis of different types of data to model forest cover. We built a map of forest growth conditions using field data, climatic and morphometric parameters. Landsat images were classified with the help of a forest inventory and field database in order to map of current forest cover. Using Knowledge Engineer Module (ERDAS Imagine), we developed a knowledge base intended for modeling forest regeneration series from a spatial combination of the maps of forest growth conditions and of current forest cover state. This system has been tested for a study area in Central Siberia. © SGEM2017. All Rights Reserved.

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Держатели документа:
V.N. Sukachev Institute of Forest Siberian Branch RAS, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Danilova, I.; Ryzhkova, V.; Korets, M.

/ S. Evgrafova [et al.] // International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM : International Multidisciplinary Scientific Geoconference, 2017. - Vol. 17: 17th International Multidisciplinary Scientific Geoconference, SGEM 2017 (29 June 2017 through 5 July 2017, ) Conference code: 130796, Is. 32. - P257-264, DOI 10.5593/sgem2017/32/S13.034 . -
Аннотация: We aimed at identifying the microbial response and associated release of CO2 and CH4 in/from thawing soil that has been permanently frozen. For that we performed an in situ field-based incubation experiment in a rim of ice-wedge polygon on Samoylov island, Lena Delta, Russia (72°22’N, 126°28’E). Frozen "buried' organic matter were taken from eroded Lena river bank and transferred to the soil surface in a rim of ice-wedge polygon. The principle includes that formerly frozen soil is moved to the active layer, but still residing in the subsoil in order to mimic cryoturbation processes. The mean seasonal methane efflux from soil surface with the transplaced permafrost soil, as measured in the vegetation period after experiment set up, was 0.55±0.07 mg CH4 m-2 h-1; whereas the mean seasonal methane efflux from plots without buried organic material (i.e., disturbance control) was 0.50±0.02 mg CH4 m-2 h-1. Hence, differences were minor. CO2 emission measured by dark chambers did not differ in magnitude during 4 weeks from the beginning of the vegetation period, and then was approximately 1.5 times larger in plots containing organic material. The release of CO2 from soil was mainly responding to soil temperature, as the Pearson's coefficient for correlation between heterotrophic respiration rate and soil and air temperature was r=0.63, r=0.38, respectively. We conclude that the heterotrophic part of microbial community needs some period for adaptation to the chemical properties of the introduced organic matter (approximately 3-4 weeks). Consequently, due to the short vegetation period in this ecosystem we expect that the acceleration of carbon release is possibly not pronounced. © SGEM2017. All Rights Reserved.

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Держатели документа:
V.N. Sukachev Institute of Forest FIC SB RAS, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Institute of Soil Science, Leibniz University of Hannover, Germany

Доп.точки доступа:
Evgrafova, S.; Novikov, O.; Meteleva, M.; Guggenberger, G.

/ N. N. Koshurnikova [et al.] // International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM : International Multidisciplinary Scientific Geoconference, 2017. - Vol. 17: 17th International Multidisciplinary Scientific Geoconference, SGEM 2017 (29 June 2017 through 5 July 2017, ) Conference code: 130796, Is. 32. - P907-914, DOI 10.5593/sgem2017/32/S13.117 . -
Аннотация: Data characterizing biological productivity of wooden layer in dark coniferous forests secondary succession stands of southern taiga subzone of West Siberian continental sector have been given. Thus, the obtained data prove that ecosystems of the same age group which vary in type of root vegetation forming, developing under the similar vitality conditions (temperature, moisture and nutrition) form different organic matter stores in phytomass. The wooden layer phytomass of secondary birch stands accumulates almost twice of organic matter (138—239 t/ha), compared with native fir stands of non-replacement regeneration (85—128 t/ha). The main part of phytomass stores is concentrated in stem wood and its absolute meaning increases with age. In secondary birch stands its part changes from 67 % in 60-year-old forest stand to 63 % in 100-year-old over mature forest stand. In native 50- and 90-year-old spruce-fir phytocenosis stem part in phytomass total store increases from 48 to 54 % and reaches 64 % in the age of 170. © SGEM2017. All Rights Reserved.

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Держатели документа:
Siberian Federal University, Krasnoyarsk, Russian Federation
V.N, Sukachev Institute of Forest SB RAS, Krasnoyarsk, Russian Federation
Siberian State Technological University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Koshurnikova, N. N.; Antamoshkina, O. A.; Makhnykina, A.; Zlenko, L. V.; Verkhovets, S. V.

/ S. Evgrafova [et al.] // International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM : International Multidisciplinary Scientific Geoconference, 2018. - Vol. 18: 18th International Multidisciplinary Scientific Geoconference, SGEM 2018 (2 July 2018 through 8 July 2018, ) Conference code: 142896, Is. 3.2. - P213-218, DOI 10.5593/sgem2018/3.2/S13.028 . -
Аннотация: A fundamental research question related to the impact of thawing permafrost on global change is, how fast organic matter in the thawing permafrost can be converted to CO2 and CH4 and released into the atmosphere. Current estimates on the degradability of thawing organic matter in permafrost are based on incubation studies which are highly artificial and probably overestimate the greenhouse gas production under in situ conditions. We aimed at identifying the microbial response and associated release of CO2 and CH4 from thawing soil that has previously been permanently frozen. For this, we performed an in situ field-based incubation experiment in a rim of an ice-wedge polygon on Samoylov island in the Lena River Delta, Russia, at 72°22’N, 126°28’E. We moved formerly frozen soil to the active layer. This material was either placed partly in the subsoil, to mimic the cryoturbation processes, or was exposed to the soil surface to simulate an eroded river bank. Data from the incubation experiment showed low intensity of gas emission which indicates a weak involvement of the buried soil in the present-day processes of microbial decomposition. © SGEM 2018.

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Держатели документа:
V.N. Sukachev Institute, of Forest FIC SB RAS, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Institute of Soil Science, Leibniz University of Hannover, Germany

Доп.точки доступа:
Evgrafova, S.; Novikov, O.; Meteleva, M.; Guggenberger, G.

/ N. Koshurnikova [et al.] // International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM : International Multidisciplinary Scientific Geoconference, 2018. - Vol. 18: 18th International Multidisciplinary Scientific Geoconference, SGEM 2018 (2 July 2018 through 8 July 2018, ) Conference code: 142896, Is. 3.2. - P885-892, DOI 10.5593/sgem2018/3.2/S14.114 . -
Аннотация: The results of the studies have shown that the total C reserves of the dark coniferous forest phytomass of the southern taiga in the south-eastern part of the Western Siberia vary from 75.8 to 129.0 t/ha in secondary birch forest and from 48.9 to 110.5 t/ha in fir forests. The analysis of the production process in dark coniferous forests of the southern taiga done using such parameters as absolute value of the C biomass growth, specific annual production of wood and efficiency of assimilation apparatus work, has determined a few differences in the intensity of the NPP phytocenoses which differ from each other by the type of the main plant formation (with or without change of species). The typical feature of the secondary birch forests is the high efficiency of the assimilation apparatus work (2 4 times) than in fir forests. The data analysis only for pure birch forests has determined the connection between the intensity of C organic matter production and C mass in leaves. The total specific production of the growing crop decreases with age: in birch forests from 5.4 down to 3.1%, in fir forests from 8.2 to 5.5%, making 2.7 % at age of 170 years. © SGEM 2018.

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Держатели документа:
Siberian Federal University, Krasnoyarsk, Russian Federation
Branch of FBU VNIILM «Center of the forest pirology», Krasnoyarsk, Russian Federation
V.N. Sukachev Institute of Forest SB RAS, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Koshurnikova, N.; Makhnykina, A.; Garmash, A.; Lyudmila Zlenko, L. V.; Verkhovets, S.

/ A. V. Dergunov [et al.] // International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM : International Multidisciplinary Scientific Geoconference, 2019. - Vol. 19: 19th International Multidisciplinary Scientific Geoconference, SGEM 2019 (30 June 2019 through 6 July 2019, ) Conference code: 150486, Is. 2.2. - P517-524, DOI 10.5593/sgem2019/2.2/S10.063 . -
Аннотация: Response to anthropogenic disturbances, recorded according to remote sensing of the Earth, has a long-term manifestation not only in the spectral characteristics of the channels of visible and near infrared ranges of satellite imagery, but also in the study of the temperature field. The paper deals with the local excess temperature of the underlying surface in the areas of cutting the territory of the Angara region, compared with the background values identified by satellite data Landsat 5 and 8 for the seventeen-year period. Estimates of the relative difference in the temperature of the underlying surface of the cutting area in comparison with the average background values are obtained. To this end, a number of software products to automate the archiving and conversion of satellite information has been developed. These software products are designed for calculation of the radio-brightness temperature of the underlying surface of disturbed and undisturbed areas of forest vegetation in the pre-selected areas of the territory. They are also used to average the obtained data of radio-brightness temperature and to calculate the difference between the average values of the radio-brightness temperature of the underlying surface of the disturbed areas relative to the undisturbed, that is, the background. This approach can significantly reduce the processing time of a large amount of information and optimize the amount of data storage. Separately, the study area was analyzed according to the NDVI vegetation index. The data obtained demonstrate a high rate of recovery of grass cover and grass-shrub layer immediately after damage to forest vegetation. It is shown that during the considered period of time (17 years) the value of excess temperature decreases, which is determined by the processes of vegetation restoration, including stand on felling. It is established that the increased temperatures of the underlying surface in the place of cuttings are remained for at least 15 years, and the temperature increase over the background values in the conditions of the observed successional processes is not less than 10%. As a limiting factor in the restoration of the temperature background of the underlying surface, fires can act. © SGEM2019. All Rights Reserved.

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Держатели документа:
Federal Research Center Krasnoyarsk Science Center of the SB RAS, Krasnoyarsk, Russian Federation
Institute of Computational Modelling SB RAS, Krasnoyarsk, Russian Federation
Sukachev Institute of Forest SB RAS, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Dergunov, A. V.; Krasnoshchokov, K. V.; Ponomarev, E. I.; Yakubailik, O. E.

/ S. Evgrafova [et al.] // International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM : International Multidisciplinary Scientific Geoconference, 2019. - Vol. 19: 19th International Multidisciplinary Scientific Geoconference, SGEM 2019 (30 June 2019 through 6 July 2019, ) Conference code: 150487, Is. 3.2. - P293-300, DOI 10.5593/sgem2019/3.2/S13.039 . -
Аннотация: Methanotrophic bacteria are unique group of microorganisms structurally and functionally adapted to use methane as a source of carbon, which is of great interest due to their ability to oxidize atmospheric methane. Methanotrophs are known to associate with mosses, which provide bacteria by habitat and protection. Methanotrophic bacteria provide mosses with carbon dioxide resulting of methane oxidation, whose content in moss tissues can reach 32%. We studied mosses and lichens sampled in Eastern Siberia permafrost ecosystems for methane oxidizing ability of associated bacteria, at concentrations of methane close to atmospheric. The consumption of methane in consortia of mosses and lichens and associated microorganisms was measured in laboratory incubation experiments. The methanotrophic activity registrated using gas analyzer Picarro 2201-i (Picarro Inc., USA) as a shift in the isotopic composition ?13C in methane. It was shown that samples collected in permafrost soils have a larger ability to methanotrophy than sample collected in non-permafrost soils. In addition, we measured methanotrophic ability of the individual species of mosses and lichens. It has been shown that methanotrophs associated with lichens Cladonia stelaris and Cetraria laevigata have great methanotrophic ability on a level of methanotrophs associated with mosses Rhytidium rugosum and Dicranum polysetum. © SGEM2019 All Rights Reserved.

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Держатели документа:
V.N. Sukachev Institute of Forest, FRC KSC SB RAS, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Evgrafova, S.; Kadutskiy, V.; Mukhortova, L.; Prudnikova, S.

/ A. Panov [et al.] // International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM : International Multidisciplinary Scientific Geoconference, 2019. - Vol. 19: 19th International Multidisciplinary Scientific Geoconference, SGEM 2019 (30 June 2019 through 6 July 2019, ) Conference code: 150491, Is. 5.2. - P249-262, DOI 10.5593/sgem2019/5.2/S20.032 . -
Аннотация: Vast carbon reservoirs hosted in the Arctic realm may trigger a significant positive feedback loop in the global Earth climate system under existing global warming scenarios. Nevertheless, sparse coverage of the Arctic region with greenhouse gas (GHG) observation network limits our understanding of carbon cycling in this environment and making predictions about a fate of carbon conserved in currently frozen ground. Especially critical gaps exist in the vast Arctic territories of Siberia, where solely 3 continuous atmospheric carbon observation stations are currently operational and located entirely in Northeastern Siberia: Atmospheric carbon observation station Ambarchik (69.62° N, 162.30° E), the Tiksi hydrometeorological observatory (71.6°N, 128.9° E) and the Cape Baranova ice base observatory on the Bolshevik Island, Severnaya Zemlya (79.3° N, 101.8° E). In this paper we introduce a newly established coastal atmospheric carbon observation station Dikson (73.33° N, 80.34° E), jointly maintained by the V. N. Sukachev Institute of Forest SB RAS (Krasnoyarsk, Russia), Joint Directorate of Taimyr Nature Reserves (Norilsk, Russia) and the Max Planck Institute for Biogeochemistry (Jena, Germany), which is intended to fill the gap in the atmospheric GHG observations in the northcentral Siberian domain. The general west wind drift expected at the location of the site makes it more sensitive to the northern latitudes of Western Siberia, as compared to the other, more eastern, stations, which, due to the specific cyclonic activity that prevents air from the Icelandic low pressure minimum spreading towards the east of Severnaya Zemlya. The measurement site, which was launched in September 2018, is located on the Taimyr Peninsula near the gulf of the Yenisei River at the coast of the Kara Sea. Atmospheric mole fractions of CO2, CH4 and H2O at the station are continuously measured by an analyzer based on the cavity ring-down spectroscopy (CRDS) technique (G2301-f, Picarro Inc., USA). Data quality control of trace gas measurements is achieved by regular calibrations against WMO-traceable reference gases, an applied water vapor correction and meteorological records that permit data screening. A preliminary wind analysis and calculated backward trajectories from hot spots downwind of the measurement site reveal that during late spring and summer tundra landscapes of the upper part of the Taimyr Peninsula, the gulf of the Yenisei River and the adjacent shelf areas of the Arctic Ocean are the major contributors to the observed variability at the station. Conversely in winter (frost period) this site becomes receptive to air masses originated in the continental domain and containing the anthropogenic GHGs, e.g. the gas production on the Tazovskiy Peninsula. Here we summarize the scientific rationale of the new site, give technical details of the instrumental setup, analyze the local environments and present some exemplary results. © SGEM2019.

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Держатели документа:
V. N. Sukachev Institute of Forest of the Siberian Branch of Russian Akademy of Sciences – separated department of the FRC KSC SB RAS, Akademgorodok 50/28, Krasnoyarsk, 660036, Russian Federation
Max Planck Institute for Biogeochemistry, Hans-Knoll-Str. 10, Jena, D07745, Germany
University of Helsinki, Faculty of Science, Institute for Atmospheric and Earth System Research (INAR) / Physics, Gustaf Hallstromin katu 2b, Helsinki, 00560, Finland

Доп.точки доступа:
Panov, A.; Prokushkin, A.; Korets, M.; Sidenko, N.; Heimann, M.