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

[Text] / C. . Blodau [et al.] // J. Geophys. Res.-Biogeosci. - 2008. - Vol. 113, Is. G3. - Ст. G03023, DOI 10.1029/2007JG000652. - Cited References: 45. - The support of the Deutsche Forschungsgemeinschaft (DFG) and of the German Ministry of Science and Education (BMBF) to H. Flessa, G. Guggenberger, and C. Blodau is gratefully acknowledged. We thank Martina Heider for laboratory assistance, Pjotr Karas and Alexander Tiunov for all their help with field work, and Swetlana Poljuhova (Field Station Igarka of the Permafrost Institute Yakutsk) for excellent laboratory analyses and help with respect to logistics. . - 8. - ISSN 0148-0227РУБ Environmental Sciences + Geosciences, Multidisciplinary

Аннотация: Thermokarst wetlands and ponds in the subarctic, which are located in land surface depressions resulting from permafrost melt, are strong sources of CH4, but little is known about respiration processes supporting these emissions. We determined CH4 fluxes and concentration profiles of dissolved gases and anions and some delta C-13 ratios of CO2 and CH4 in a thermokarst pond and adjacent smaller thermokarst depressions in the forest tundra near Igarka, northern Siberia in August 2006. Methane was emitted at 110-170 mg m(-2) d(-1) and produced mostly by CO2 reduction, which also provided high Gibbs free energies on the order of 50-70 KJ mol(-1) H-2 due to high H-2 concentrations. The diffusive flux calculated from CH4 gradients in the floating mat contributed 2% to emissions. CH4 was apparently not oxidized deeper than 20 cm into the floating mat and the water body below. Anaerobic respiration required to reproduce nonsteady state CO2 concentration maxima in the floating mat above the water body was 30-80 nmol cm(-3) d(-1) or 250 mg m(-2) d(-1) and thus on a similar order of magnitude as CH4 fluxes. The results suggest that floating mat-covered thermokarst ponds located in northern Siberian bogs effectively convert recently fixed carbon into CH4 and thus allow for emissions independently from the finite, bog-derived carbon source. The relative contribution of recently fixed and old bog-derived carbon to C fluxes requires further investigation, however.

Держатели документа:
[Blodau, Christian
Rees, Rainer
Knorr, Klaus-Holger] Univ Bayreuth, Limnol Res Stn, D-95440 Bayreuth, Germany
[Blodau, Christian
Rees, Rainer
Knorr, Klaus-Holger] Univ Bayreuth, Dept Hydrol, D-95440 Bayreuth, Germany
[Flessa, Heiner] Univ Gottingen, Buesgeninst, D-37077 Gottingen, Germany
[Rodionov, Andrej
Guggenberger, Georg] Univ Halle Wittenberg, Inst Agr & Nutr Sci, D-06108 Halle, Germany
[Shibistova, Olga
Zrazhevskaya, Galina
Mikheeva, Natalia] SB RAS, VN Sukachev Inst Forest, Krasnoyarsk 660036, Russia
[Kasansky, Oleg A.] SB RAS, Permafrost Inst Yakutsk, Field Stn Igarka, Igarka 663200, Russia

Доп.точки доступа:
Blodau, C...; Rees, R...; Flessa, H...; Rodionov, A...; Guggenberger, G...; Knorr, K.H.; Shibistova, O...; Zrazhevskaya, G...; Mikheeva, N...; Kasansky, O.A.

/ D. L. Grodnitsky, M. V. Kozlov // Biologisches Zentralblatt. - 1991. - Vol. 110, Is. 3. - P199-206 . - ISSN 0006-3304
Аннотация: Examined wing morphology and flight kinematics in 53 species of moths and butterflies. The main pathways of evolution of flapping plane are described. The structure of wing scale covering was studies in 151 species. The most widely spread modifications of the covering are defined, and relationship of wing evolution to that of scale covering is discussed. The main function of scales is supposed to be thermoinsulatory. -from Authors

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Держатели документа:
V.N. Sukachev Inst. of Forest & Wood, Siberian Branch of the USSR, Academy of Sciences, Krasnoyarsk, 66003, Russia

Доп.точки доступа:
Grodnitsky, D.L.; Kozlov, M.V.

[Text] / D. L. GRODNITSKY, P. P. MOROZOV // J. Exp. Biol. - 1993. - Vol. 182. - P11-40. - Cited References: 59 . - 30. - ISSN 0022-0949РУБ Biology

Аннотация: Tethered flight of six insect species (two pentatomid bugs, a moth, a butterfly, a muscid fly and a crane fly) was studied using several modifications of a dust flow visualization procedure. The spatial structure of the near vortex wake of flying specimens was reconstructed on the basis of two-dimensional flow pictures. The dynamics of the wake was followed during a stroke cycle, revealing interspecific differences in vortex formation. It is suggested that insects create a single vortex ring during each stroke. Therefore, the hypothesis of double vortex chains advanced by Brodsky is not verified. The same is true of the jet hypothesis of Bocharova-Messner. While pronating at the top of their trajectory, the flapping wings throw air masses off their lower surfaces, but there is not a jet from between their upper sides. Flow separation from leading edges was found to be a rare phenomenon, taking place irregularly during the stroke cycle. That is why, contrary to widespread theoretical expectations, the Weis-Foch fling mechanism is not likely to contain a leading edge separation bubble, which must follow stalling at the front part of the wings. It is suggested that flying animals possess special mechanisms for extracting energy back from the near vortex wake. Some hypothetical adaptations for such an extraction in insects are put forward. Possible pathways for the evolution of insect flight are described.


Доп.точки доступа:
GRODNITSKY, D.L.; MOROZOV, P.P.

/ V. Mavromatis [et al.] // Geochim. Cosmochim. Acta. - 2014. - Vol. 147. - P76-89, DOI 10.1016/j.gca.2014.10.009 . - ISSN 0016-7037
Аннотация: To unravel the Mg isotope fractionation pathways within the continuous permafrost zone in the larch deciduous forest of Central Siberia, we measured the Mg isotopic composition of two large Siberian rivers (Nizhnaya Tunguska and Kochechum, which flow into the Yenisey), a small forested stream, and the major fluid and solid sources of Mg in the watershed: atmospheric precipitates, surface suprapermafrost flow, interstitial soil solutions, plant biomass, litter and mineral soils. The obtained results indicate a significant seasonal variation in riverine water Mg isotope signatures. During the winter baseflow, the Mg isotope composition of large rivers is significantly lighter than the source basaltic rocks and the atmospheric depositions. These differences support the presence of fluids enriched in lighter Mg isotopes, such as those affected by the mineral precipitation of secondary silicates or fluids that dissolve sedimentary carbonate rocks. During the spring flood and in the summer and fall seasons, the river fluid ?26Mg values increased by 0.2-0.3‰ and approached the Mg isotope composition of the ground vegetation (dwarf shrubs, mosses) and the soil organic horizon. Overall, the riverine waters were 0.3-0.7‰ lighter than the unaltered bedrock and the deep minerals soil horizons.The Mg isotopic compositions of Larix gmelinii organs (i.e., stem wood, roots and needles) exhibit a low variability. However, an enrichment of 0.2-0.3‰ in the ?26Mg of larch needles in the course of the growing season, from June to September can be observed. This enrichment most likely demonstrates uptake of isotopically heavier Mg by the plant in addition to the progressive thawing of the mineral soil (deepening of the active layer of the soil). Overall, the Mg isotope approach indicates the important contribution of vegetation (larch needles, mosses and dwarf shrubs) to the riverine Mg isotope signature and helps to reveal the contribution of isotopically light carbonate rocks in the large rivers of the Central Siberian Plateau.

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Держатели документа:
Geosciences Environnement Toulouse (GET), CNRS, UMR 5563, Observatoire Midi-Pyrenees, 14 Av. E. BelinToulouse, France
V.N. Sukachev Institute of Forest, SB RAS, Akademgorodok 50/28Krasnoyarsk, Russian Federation
BIO-GEO-CLIM Laboratory, Tomsk State UniversityTomsk, Russian Federation

Доп.точки доступа:
Mavromatis, V.; Prokushkin, A.S.; Pokrovsky, O.S.; Viers, J.; Korets, M.A.

[Text] / S. Tautenhahn [et al.] // Glob. Change Biol. - 2016. - Vol. 22, Is. 6. - P2178-2197, DOI 10.1111/gcb.13181. - Cited References:94. - We thank Danilo Mollicone, Marina Bryukhanova, Alexey Panov, and Sergey Verkhovets for their help preparing the expeditions. This work would not have been possible without the hard work in the field of Jan Hertwig, Waldemar Ziegler, Ulrich Pruschitzki, Norman Gentsch, Luisa Hiese, Surgery Titov, Vladimir Kislitsyn, Kolya Savaronsky, and Roman Bachman. Henrik Hartmann, Angela Gunther, and Corinna Hohl assisted with dendrochronological analysis. Miguel Mahecha, Jannis van Buttlar, and Ulrich Weber helped with R and the artwork. Corinna Buendia gave helpful comments on a early stage of the manuscript. We thank three anonymous reviewers for their valuable input. The project was funded by the Max Planck Society. Anatoly Prokushkin was supported by the RSF grant 14-24-00113. . - ISSN 1354-1013. - ISSN 1365-2486РУБ Biodiversity Conservation + Ecology + Environmental Sciences

Аннотация: Fire is a primary driver of boreal forest dynamics. Intensifying fire regimes due to climate change may cause a shift in boreal forest composition toward reduced dominance of conifers and greater abundance of deciduous hardwoods, with potential biogeochemical and biophysical feedbacks to regional and global climate. This shift has already been observed in some North American boreal forests and has been attributed to changes in site conditions. However, it is unknown if the mechanisms controlling fire-induced changes in deciduous hardwood cover are similar among different boreal forests, which differ in the ecological traits of the dominant tree species. To better understand the consequences of intensifying fire regimes in boreal forests, we studied postfire regeneration in five burns in the Central Siberian dark taiga, a vast but poorly studied boreal region. We combined field measurements, dendrochronological analysis, and seed-source maps derived from high-resolution satellite images to quantify the importance of site conditions (e.g., organic layer depth) vs. seed availability in shaping postfire regeneration. We show that dispersal limitation of evergreen conifers was the main factor determining postfire regeneration composition and density. Site conditions had significant but weaker effects. We used information on postfire regeneration to develop a classification scheme for successional pathways, representing the dominance of deciduous hardwoods vs. evergreen conifers at different successional stages. We estimated the spatial distribution of different successional pathways under alternative fire regime scenarios. Under intensified fire regimes, dispersal limitation of evergreen conifers is predicted to become more severe, primarily due to reduced abundance of surviving seed sources within burned areas. Increased dispersal limitation of evergreen conifers, in turn, is predicted to increase the prevalence of successional pathways dominated by deciduous hardwoods. The likely fire-induced shift toward greater deciduous hardwood cover may affect climate-vegetation feedbacks via surface albedo, Bowen ratio, and carbon cycling.

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Max Planck Inst Biogeochem, Hans Knoll Str 10, D-07745 Jena, Germany.
Tech Univ Bergakad Freiberg, Dept Biosci, Leipziger Str 29, D-09596 Freiberg, Germany.
Univ Florida, Dept Biol, Gainesville, FL 32611 USA.
German Ctr Integrat Biodivers Res iDiv, Deutsch Pl 5e, D-04103 Leipzig, Germany.
Univ Florida, Sch Forest Resources & Conservat, Gainesville, FL 32611 USA.
Russian Acad Sci, Siberian Branch, Sukachev Inst Forest, Akademgorodok 50-28, Krasnoyarsk 660036, Russia.
Univ Leipzig, Johannisallee 21-23, D-04103 Leipzig, Germany.

Доп.точки доступа:
Tautenhahn, Susanne; Lichstein, Jeremy W.; Jung, Martin; Kattge, Jens; Bohlman, Stephanie A.; Heilmeier, Hermann; Prokushkin, Anatoly; Kahl, Anja; Wirth, Christian; Max Planck Society; RSF [14-24-00113]

: научное издание / В.В. Иванов, М.Д. Евдокименко // Лесоведение. - 2017. - № : 4. - С. 256-269 : табл., DOI 10.7868/S002411481704-0019. - Библиогр. в конце ст. . - ISSN 0024-1148
   Перевод заглавия: Contribution of fellings and fires to forest dynamics of Lake Baikal Basin

УДК	630*651.74630*435

Аннотация: Рассматриваются особенности антропогенной истории лесообразовательного процесса в бассейне Байкала. Интервал от ретроспективных сведений о состоянии лесов в прошлом до нынешнего их облика охватывает более трёх столетий. Это позволяет анализировать полный цикл развития насаждений разных древесных пород, начиная с этапа лесовозобновления. Изучены основные варианты формирования насаждений и строения древостоев, детерминируемые антропогенными факторами. Рассмотрена пирогенная дигрессия светлохвойных насаждений вплоть до их распада в перестойном возрасте, с последующей регенерацией, а также возможной сменой породного состава и обезлесением. Хозяйственное использование байкальских лесов начиналось с архаичных выжиганий, проводимых аборигенами-промысловиками, и поселенческих рубок. Интенсивному и обширному освоению байкальских лесов предшествовало строительство Транссиба. Наиболее негативные последствия рубок и сопутствовавших им пожаров отмечены в Южном Прибайкалье. Так, на побережье Байкала исчезли кедровые насаждения, сменившиеся березняками и осинниками. Затем последовала нарастающая волна рубок в светлохвойных лесах Селенгинского среднегорья, финалом которой стали концентрированные лесоразработки 1950-х годов. В итоге - смена хвойных насаждений лиственными. Нередко происходило локальное обезлесение, причиной которого была по большей части осложнившаяся пожарная обстановка. Позитивные перемены в лесопользовании инициированы разработками Института леса с начала 1960-х годов. Были предложены экологичные способы и технологии рубок, с обоснованием перечня особо защитных участков леса, в которых рубки исключались. Эти новшества стали основой региональных Правил рубок леса, совершенствуемых по результатам дальнейших исследований. Вся система лесопользования, включая рубки ухода, становилась адекватной высокому биосферному статусу байкальских лесов. Одновременно изучалась пожароопасность лесов, в том числе дифференцированное влияние разных пирологических режимов на лесообразовательный процесс. Наиболее системно изучены последствия пожаров в светлохвойных насаждениях как особенно пожароопасных. С их пирогенной историей тесно связан современный облик лесных массивов.
Specifics of human effect on the forest development in Baikal basin are considered. Retrospective forest records preceding their current state date back to more than three centuries. Thus we could track the whole cycle of development of various forest species starting with reforestation. We studied prevailing pathways of forest formation and varieties of stand structure controlled by human impacts. Pyrogenic digression of light conifer forests preceding the decline in old-growth age, followed by either recovery, or change in species composition, or deforestation. Records of human impacts on Baikal forests start with archaic burning by aboriginal field men, and settlement-related fellings. Robust and intensive exploitation of Baikal forests was preceded by construction of Trans-Siberian Railway. The worst consequences of the cuts and concomitant fires were found in southern Cisbaikalia. For example, the stone pine forests have been substituted by birch and aspen forests on the shore of Baikal. Then there have been increasingly intensive wave of fellings of light conifer forests on middle altitudes of Selenga region peaked by intensive forest exploitation during 1950s. It has come to a change of conifers by deciduous species. Local deforestations have been common given the growing fire intensity. Forest management has changed positively with advancements introduced by the Forest Institute staring at 1960s. The eco-friendly ways and techniques of felling have been adopted, and the list of highly protective forests where fellings were prohibited, have been denunciated. These novelties have come to as a basis of the regional cutting regulations, which continued to be developed according to new findings. The whole system of forest management, including the sanitary fellings, has become increasingly adequate to the high biospheric role of Baikal forests. Simultaneously the fire danger of forests has been studied, which involved the differentiating effect of fire regime on forest forming process. The consequences of fires have been consistently examined in light coniferous forests being fire susceptible to a highest extent. Moreover their fire records are tightly associated with the current outlook of woodlands outlook.

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Держатели документа:
Институт леса им. В.Н. Сукачева СО РАН

Доп.точки доступа:
Иванов, Виктор Васильевич; Евдокименко, Михаил Данилович; Yevdokimenko Mikhail Danilovich; Ivanov Viktor Vasil'yevich

/ P. Groisman [et al.] // Prog. Earth Planet. Sci. - 2017. - Vol. 4. - Ст. 41, DOI 10.1186/s40645-017-0154-5. - Cited References:493. - Support for most of the US authors and contributors of this paper as well as the multiannual support for the office of the NEESPI Project Scientist was provided by the NASA Land Cover and Land Use Change (LCLUC) Program, in particular, by grants NNX13AC66G, NNX11AB77G, NNX13AN58G, NNX15AD10G, NAG5-11084, 08-LCLUC08-2-0003, NNX14AD88G, NNX08AW51G, NNX12AD34G, NNX14AD91G, and NNX15AP81G. The research carried out at the Jet Propulsion Laboratory, California Institute of Technology, was also supported by the NASA LCLUC Program. Support of NASA grants 08-TE08-029 and NNH09ZDA001N-IDS for AS and NT are acknowledged. Research of MS is supported by Newton-al-Farabi Fund (grant 172722855). Grant 14.B25.31.0026 of the Ministry of Education and Science of the Russian Federation provided support to PG, SG, NT, AS, OB, BP, and IP for their work conducted at the P. P. Shirshov Institute of Oceanology. The Project "ARCTIC-ERA: ARCTIC climate change and its impact on Environment, infrastructures, and Resource Availability" sponsored by: ANR (France), RFBR (Russia), and the US NSF (grants 1717770 and 1558389) in response to Belmont Forum Collaborative Research Action on Arctic Observing and Research for Sustainability provided support for OZ, SG, BP, PG, and NS. A part of the paper is based on the research carried out with the financial support of the Russian Foundation for Basic Research (Project No. 15-06-08163 "Assessment and forecast of the socioeconomic and environmental implications of the climate change in the Arctic region"). Support for AP is provided by the Russian Government Program of Competitive Growth of Kazan Federal University (OpenLab Initiative). Support for JA is provided by grant NPUILO1417 of the Ministry of Education, Youth and Sports of Czechia. . - ISSN 2197-4284РУБ Geosciences, Multidisciplinary

Аннотация: During the past several decades, the Earth system has changed significantly, especially across Northern Eurasia. Changes in the socio-economic conditions of the larger countries in the region have also resulted in a variety of regional environmental changes that can have global consequences. The Northern Eurasia Future Initiative (NEFI) has been designed as an essential continuation of the Northern Eurasia Earth Science Partnership Initiative (NEESPI), which was launched in 2004. NEESPI sought to elucidate all aspects of ongoing environmental change, to inform societies and, thus, to better prepare societies for future developments. A key principle of NEFI is that these developments must now be secured through science-based strategies co-designed with regional decision-makers to lead their societies to prosperity in the face of environmental and institutional challenges. NEESPI scientific research, data, and models have created a solid knowledge base to support the NEFI program. This paper presents the NEFI research vision consensus based on that knowledge. It provides the reader with samples of recent accomplishments in regional studies and formulates new NEFI science questions. To address these questions, nine research foci are identified and their selections are briefly justified. These foci include warming of the Arctic; changing frequency, pattern, and intensity of extreme and inclement environmental conditions; retreat of the cryosphere; changes in terrestrial water cycles; changes in the biosphere; pressures on land use; changes in infrastructure; societal actions in response to environmental change; and quantification of Northern Eurasia's role in the global Earth system. Powerful feedbacks between the Earth and human systems in Northern Eurasia (e.g., mega-fires, droughts, depletion of the cryosphere essential for water supply, retreat of sea ice) result from past and current human activities (e.g., large-scale water withdrawals, land use, and governance change) and potentially restrict or provide new opportunities for future human activities. Therefore, we propose that integrated assessment models are needed as the final stage of global change assessment. The overarching goal of this NEFI modeling effort will enable evaluation of economic decisions in response to changing environmental conditions and justification of mitigation and adaptation efforts.

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NOAA, Natl Ctr Environm Informat, Fed Bldg,151 Patton Ave, Asheville, NC 28801 USA.
Univ Virginia, Dept Environm Sci, 291 McCormick Dr, Charlottesville, VA 22904 USA.
Marine Biol Lab, Ecosyst Ctr, Woods Hole, MA 02543 USA.
South Dakota State Univ, Geospatial Sci Ctr Excellence, 1021 Medary Ave,Wecota Hall 506B, Brookings, SD 57007 USA.
RAS, Sukachev Inst Forest, Fed Res Ctr, Krasnoyarsk Sci Ctr,SB, 50-28 Akademgorodok, Krasnoyarsk 660036, Russia.
Natl Inst Environm Studies, 16-2 Onogawa, Tsukuba, Ibaraki 3058506, Japan.
MIT, Joint Program Sci & Policy Global Change, Cambridge, MA 02139 USA.
NASA Headquarters, NASA Land Cover Land Use Change Program, Mail Suite 3B74,Room 3Y77,300 E St SW, Washington, DC 20546 USA.
RAS, PP Shirshov Inst Oceanol, 36 Nakhimovsky Ave, Moscow 117218, Russia.
Michigan State Univ, Dept Geog, 673 Auditorium Rd, E Lansing, MI 48824 USA.
Univ Copenhagen, Sect Geog, Dept Geosci & Nat Resource Managemen, Oster Voldgade 10, DK-1350 Copenhagen K, Denmark.
RAS, Inst Econ Forecasting, 47 Nakhimovsky Ave, Moscow 117418, Russia.
Univ New Hampshire, Earth Syst Res Ctr, Morse Hall,8 Coll Rd,Rm 21, Durham, NH 03824 USA.
Univ Maryland, Dept Geog Sci, 1121 LeFrak Hall,7251 Preinkert Dr, College Pk, MD 20742 USA.
George Washington Univ, Dept Geog, Old Main Bldg,1922 F St NW, Washington, DC 20052 USA.
CALTECH, Jet Prop Lab, MS 300-235,4800 Oak Grove Dr, Pasadena, CA 91109 USA.
Univ Michigan, Sch Nat Resources & Environm, 440 Church St, Ann Arbor, MI 48109 USA.
Charles Univ Prague, Fac Sci, Dept Expt Plant Biol, Vinicna 5, Prague 12844, Czech Republic.
Michigan State Univ, Ctr Global Change & Earth Observat, 1405 S Harrison Rd, E Lansing, MI 48823 USA.
Univ Reading, Dept Geog & Environm Sci, Reading RG6 6AB, Berks, England.
IIASA, Ecosyst Serv & Management Program, Schlosspl 1, A-2361 Laxenburg, Austria.
State Hydrol Inst, 2nd Lane, St Petersburg 199053, Russia.
NASA Langley Res Ctr, Natl Inst Aerosp, 21 Langley Blvd,MS 420, Hampton, VA 23681 USA.
Univ Oklahoma, Dept Geog & Environm Sustainabil, 100 East Boyd St,SEC Suite 510, Norman, OK 73019 USA.
Russian Inst Hydrometeorol Informat, 6 Koroleva St, Obninsk 249020, Kaluga Area, Russia.
Michigan Tech Res Inst, 3600 Green Court,Suite 100, Ann Arbor, MI 48105 USA.
Miami Univ, Dept Geog, 250 S Patterson Ave, Oxford, OH 45056 USA.
Purdue Univ, 550 Stadium Mall Dr, W Lafayette, IN 47907 USA.
Joseph Fourier Univ Grenoble 1, Lab Glaciol & Geophys Environm, 54 Rue Moliere,BP 96, F-38402 St Martin Dheres, France.
Hydrol Sci & Serv Corp, 920 Rockhold Dr, Asheville, NC 28804 USA.
Kazan Fed Univ, Inst Environm Sci, Tovarishcheskaya Str 5, Kazan 420097, Russia.

Доп.точки доступа:
Groisman, Pavel; Shugart, Herman; Kicklighter, David; Henebry, Geoffrey; Tchebakova, Nadezhda; Maksyutov, Shamil; Monier, Erwan; Gutman, Garik; Gulev, Sergey; Qi, Jiaguo; Prishchepov, Alexander; Kukavskaya, Elena; Porfiriev, Boris; Shiklomanov, Alexander; Loboda, Tatiana; Shiklomanov, Nikolay; Nghiem, Son; Bergen, Kathleen; Albrechtova, Jana; Chen, Jiquan; Shahgedanova, Maria; Shvidenko, Anatoly; Speranskaya, Nina; Soja, Amber; de Beurs, Kirsten; Bulygina, Olga; McCarty, Jessica; Zhuang, Qianlai; Zolina, Olga; NASA Land Cover and Land Use Change (LCLUC) Program [NNX13AC66G, NNX11AB77G, NNX13AN58G, NNX15AD10G, NAG5-11084, 08-LCLUC08-2-0003, NNX14AD88G, NNX08AW51G, NNX12AD34G, NNX14AD91G, NNX15AP81G]; NASA LCLUC Program; NASA [08-TE08-029, NNH09ZDA001N-IDS]; Newton-al-Farabi Fund [172722855]; Ministry of Education and Science of the Russian Federation [14.B25.31.0026]; ANR (France); RFBR (Russia); US NSF [1717770, 1558389]; Russian Foundation for Basic Research [15-06-08163]; Russian Government Program of Competitive Growth of Kazan Federal University (OpenLab Initiative); Ministry of Education, Youth and Sports of Czechia [NPUILO1417]

/ N. Kirichenko, S. Augustin, M. Kenis // J. Pest Sci. - 2018. - P1-14, DOI 10.1007/s10340-018-1009-6 . - ISSN 1612-4758
Аннотация: Leafminers are a taxonomically diverse group of endophagous insects. A number of them are pests in forestry, horticulture and agriculture, and some of them have become important invasive species. Here, we discuss the characteristics of invasive leafminers of woody plants. We first present 12 cases of invasive leaf-mining species belonging to four different insect orders. For each of them, we briefly describe their invasion, including pathways of introduction, their impact and management methods and their ecology. We then discuss various aspects of these invasions. Leafminers are introduced to new continents and spread through various pathways such as horticultural trade and accidental transport of adults and pre-imaginal stages in containers and vehicles. They may also spread long distances with air currents. A few species have serious economic impacts as orchard pests, such as the citrus leafminer, Phyllocnistis citrella, or as pests of ornamental plants, such as the horse-chestnut leafminer, Cameraria ohridella. The ecological impact of these species should be better studied, especially those killing native trees, such as the birch leaf-mining weevil, Orchestes fagi, in Canada. Compared to other insect groups, invasive leafminers are usually recruited by a range of native parasitoids, which may or may not succeed in controlling the invasive species. Biological control by introduction of parasitoids from the native range has often been successful to control invasive leafminers. The review ends by short discussions on taxonomic issues and on the use of leafminers as models to study invasion ecology. © 2018 The Author(s)

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Sukachev Institute of Forest SB RAS, Akademgorodok 50/28, Krasnoyarsk, Russian Federation
Siberian Federal University, 79 Svobodny pr, Krasnoyarsk, Russian Federation
INRA, UR 633 Zoologie Forestiere, 2163 Avenue de la Pomme de Pin, Orleans, France
Rue des Grillons 1, Delemont, Switzerland

Доп.точки доступа:
Kirichenko, N.; Augustin, S.; Kenis, M.

/ K. Barrett, R. Baxter, E. Kukavskaya [et al.] // Remote Sens. Environ. - 2020. - Vol. 237. - Ст. 111539, DOI 10.1016/j.rse.2019.111539 . - ISSN 0034-4257
Аннотация: Wildfire disturbances effect changes in vegetation communities that in turn influence climate. Such changes in boreal forest ecosystems can persist over decadal time scales or longer. In the ecotone between boreal forest and steppe in the region southeast of Lake Baikal in southern Siberia, shifts between the two vegetation types may be precipitated by variations in site specific conditions, as well as disturbance characteristics such as fire frequency and severity. Warmer, drier conditions in the region have been associated with a decrease in fire return intervals and greater burn severity that may, in turn, drive conversion of forests to steppe vegetation at a greater rate than has occurred prior to the onset of warming and drying. Stand-replacing fires in Pinus sylvestris stands in southern Siberia may lead to recruitment failure postfire, particularly on southwest to west-facing slopes, which are more often dominated by grasses. This study uses a combination of field data and remotely sensed indices of vegetation and moisture to distinguish between recruitment pathways in southern Siberia, and to study the influence of factors related to soils, topography, fire severity and winter snow cover on these. We expected that recruitment success would be associated with lower burn severity (higher NBR), higher greenness (NDVI) and moisture (NDMI), and winter snow (NDSI) postfire. We also expected phenological characteristics to differ among recruitment paths. Prior to burning, our sites are broadly similar in terms of remotely sensed indices of moisture (NDMI), vegetation (NDVI), and winter fractional snow cover (NDSI), but recruitment failure sites are generally drier and less green postfire. Initial differences in greenness and moisture among sites characterized by abundant recruitment (AR), intermediate recruitment (IR) and recruitment failure (RF) become more pronounced over the initial decades postfire. The earliest separability of AR and RF sites using remotely sensed indices occurs in the winter months 3–4 years postfire, during which time NDSI is highest for AR sites and lowest for RF. Although seasonality was important with regard to distinguishing among AR, IR and RF index values, the timing of phenological events such as start and end of season did not differ significantly among the sites. © 2019 The Authors

Scopus

Держатели документа:
Centre for Landscape and Climate Research, School of Geography, Geology and Environment, University of Leicester, University RoadLE1 7RH, United Kingdom
Leicester Institute for Space and Earth Observation, University of Leicester, University RoadLE1 7RH, United Kingdom
Department of Biosciences, University of Durham, South Road, Durham, DH1 3LE, United Kingdom
V.N. Sukachev Institute of Forest of the Siberian Branch of the Russian Academy of Sciences, Separate Subdivision of the FRC KSC SB RAS 660036 Russia, 50/28 Akademgorodok, Krasnoyarsk, Russian Federation
The Branch of FBU VNIILM “Center of Forest Pyrology”, 42 Krupskaya, Krasnoyarsk, 660062, Russian Federation

Доп.точки доступа:
Barrett, K.; Baxter, R.; Kukavskaya, E.; Balzter, H.; Shvetsov, E.; Buryak, L.

/ K. Barrett, R. Baxter, E. Kukavskaya [et al.] // Remote Sens. Environ. - 2020. - Vol. 237. - Ст. 111539, DOI 10.1016/j.rse.2019.111539. - Cited References:149. - This work was supported by the UK Natural Environment Research Council [grant number NE/N009495/1]. . - ISSN 0034-4257. - ISSN 1879-0704РУБ Environmental Sciences + Remote Sensing + Imaging Science & Photographic

Аннотация: Wildfire disturbances effect changes in vegetation communities that in turn influence climate. Such changes in boreal forest ecosystems can persist over decadal time scales or longer. In the ecotone between boreal forest and steppe in the region southeast of Lake Baikal in southern Siberia, shifts between the two vegetation types may be precipitated by variations in site specific conditions, as well as disturbance characteristics such as fire frequency and severity. Warmer, drier conditions in the region have been associated with a decrease in fire return intervals and greater burn severity that may, in turn, drive conversion of forests to steppe vegetation at a greater rate than has occurred prior to the onset of warming and drying. Stand-replacing fires in Pinus sylvestris stands in southern Siberia may lead to recruitment failure postfire, particularly on southwest to west-facing slopes, which are more often dominated by grasses. This study uses a combination of field data and remotely sensed indices of vegetation and moisture to distinguish between recruitment pathways in southern Siberia, and to study the influence of factors related to soils, topography, fire severity and winter snow cover on these. We expected that recruitment success would be associated with lower burn severity (higher NBR), higher greenness (NDVI) and moisture (NDMI), and winter snow (NDSI) postfire. We also expected phenological characteristics to differ among recruitment paths. Prior to burning, our sites are broadly similar in terms of remotely sensed indices of moisture (NDMI), vegetation (NDVI), and winter fractional snow cover (NDSI), but recruitment failure sites are generally drier and less green postfire. Initial differences in greenness and moisture among sites characterized by abundant recruitment (AR), intermediate recruitment (IR) and recruitment failure (RF) become more pronounced over the initial decades postfire. The earliest separability of AR and RF sites using remotely sensed indices occurs in the winter months 3-4 years postfire, during which time NDSI is highest for AR sites and lowest for RF. Although seasonality was important with regard to distinguishing among AR, IR and RF index values, the timing of phenological events such as start and end of season did not differ significantly among the sites.

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Держатели документа:
Univ Leicester, Sch Geog Geol & Environm, Ctr Landscape & Climate Res, Univ Rd, Leicester LE1 7RH, Leics, England.
Univ Leicester, Leicester Inst Space & Earth Observat, Univ Rd, Leicester LE1 7RH, Leics, England.
Univ Durham, Dept Biosci, South Rd, Durham DH1 3LE, England.
Russian Acad Sci, Siberian Branch, VN Sukachev Inst Forest, FRC KSC, 50-28 Akademgorodok, Krasnoyarsk 660036, Russia.
Ctr Forest Pyrol, Branch FBU VNIILM, 42 Krupskaya, Krasnoyarsk 660062, Russia.

Доп.точки доступа:
Barrett, Kirsten; Baxter, Robert; Kukavskaya, Elena; Balzter, Heiko; Shvetsov, Evgeny; Buryak, Ludmila; UK Natural Environment Research CouncilNERC Natural Environment Research Council [NE/N009495/1]

/ F. Gao, C. X. Peng, H. Wang [et al.] // Forests. - 2020. - Vol. 11, Is. 9. - Ст. 912, DOI 10.3390/f11090912. - Cited References:37. - The work was supported by the National Key R&D Program of China (2017YFD0600600), and the Innovation Project of State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University, 2016C01). . - ISSN 1999-4907РУБ Forestry

Аннотация: Korean pine is the dominant species of Korean pine forests. It is an economically valuable species that yields oil, high-quality timber and nuts, and it offers great prospects for further development. Complete regenerated plants of Korean pine were obtained via somatic embryogenesis using megagametophytes as the explant. The seeds of 27 families of Korean pine were collected to induce embryogenic lines. We compared the effects of explant collection time, family and medium components (concentrations of sucrose, plant growth regulators and acid-hydrolyzed casein) on embryogenic lines induction. The effects of plant growth regulators and L-glutamine contents on the proliferation and maturation of embryogenic cell lines were studied, and the germinating ability of different cell lines was evaluated. The embryogenic lines induction percentage of Korean pine reached 33.33%. When 4.52 mu mol center dot L(-1)2,4-D and 2.2 mu mol center dot L(-1)6-BA were added to the medium of embryogenic lines proliferation, the ability of embryo maturation was the best (cell line 001#-100 was 135.71 center dot g(-1)fresh weight). Adding 1-1.5g L-1L-glutamine to the proliferation medium can improve the ability of embryo maturation (cell line 001#-100 was 165.63 center dot g(-1)fresh weight). The germination percentage of the three cell lines tested was significant, and the highest was 66%. We report on successful regeneration and cryopreservation methods for somatic embryos of Korean pine. This technology could be used to propagate the excellent germplasm resources of Korean pine and to establish multi-varietal forestry.

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Держатели документа:
Northeast Forestry Univ, Sch Forestry, State Key Lab Tree Genet & Breeding, Harbin 150040, Peoples R China.
RAS, Forest Siberian Branch, Sukachev Inst, Lab Forest Genet & Breeding,Inst Russian Acad Sci, Krasnoyarsk 660036, Russia.
Timiryazev Russian Acad Sci, Dept Cell Biol, Moscow 127276, Russia.
Timiryazev Russian Acad Sci, Inst Plant Physiol KA, Moscow 127276, Russia.
Lomonosov Moscow State Univ, Fac Biol, Dept Plant Physiol, Moscow 119991, Russia.
State Forestry & Grassland Adm Engn Technol Res C, Harbin 150040, Peoples R China.

Доп.точки доступа:
Gao, Fang; Peng, Chunxue; Wang, Hao; Tretyakova, Iraida Nikolaevna; Nosov, Alexander Mikhaylovich; Shen, Hailong; Yang, Ling; National Key R&D Program of China [2017YFD0600600]; Innovation Project of State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University) [2016C01]

/ M. de Groot, R. O'Hanlon, E. Bullas-Appleton [et al.] // Manag. Biol. Invasion. - 2020. - Vol. 11, Is. 4. - P637-660, DOI 10.3391/mbi.2020.11.4.02. - Cited References:112. - This article is the result of workshops held at the international conference "Detection and control of forest invasive alien species in a dynamic world" sponsored by the LIFE ARTEMIS (LIFE15 GIE/SI/000770) project in Ljubljana. We would like to thank all the participants of the workshops on early detection, rapid response and communication for their active participation and fruitful discussions. The project LIFE ARTEMIS, is co-funded by the LIFE programme, Ministry of Environment and Spatial planning of the Republic of Slovenia, the Municipality of Ljubljana and the Slovenian Research Agency. The article processing charges of the article were covered by the project LIFE ARTEMIS. . - ISSN 1989-8649РУБ Biodiversity Conservation

Аннотация: Invasive alien species (IAS) are an important threat to forests. One of the best ways to manage potential IAS is through early detection and rapid response (EDRR) strategies. However, when dealing with IAS in forests, EU regulations are divided between phytosanitary regulations and IAS regulations. A version of EDRR for the former has been in place in the EU for more than 15 years while the latter is still in the process of being implemented. During 2019, a workshop was held to gather international experts on different plant health pests and IAS. The purpose of this workshop was to identify the opportunities and difficulties in applying the EDRR system in the EU phytosanitary and IAS legislation to four species for providing suggestions to improve the EDRR system. The model species are well known and come from different trophic levels. These species were the American pokeweed (Phytolacca americana), the grey squirrel (S'ciurus carolinensis); and the plant health pests Geosmithia morbida and Emerald ash borer (Agrilus planipennis). We identified the similarities in the challenges of early detection, rapid response and communication of these species. For all species, difficulties in species identification, knowledge gaps on the pathways of spread, a lack of resources and uncertainty over which national government service was the competent authority were identified as the main challenges. Other challenges like public perception for the grey squirrel or methodological problems were species-specific. Regarding the rapid response: public perception, determination of the eradication area, sufficient scientific capacity and the lack of resources were common challenges for all species. Therefore, collaboration between institutes dealing with plant health pests and IAS can lead to better control of both groups of unwanted organisms in forests.

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Держатели документа:
Slovenian Forestry Inst, Vecna Pot 2, Ljubljana 1000, Slovenia.
Agri Food & Biosci Inst, Newforge Lane, Belfast BT9 5PX, Antrim, North Ireland.
Govt Canada, Canadian Food Inspect Agcy, Plant Hlth Sci Serv Div, Ottawa, ON, Canada.
NARIC Forest Res Inst, Hegyalja Str 18, H-3232 Matrafured, Hungary.
Univ Sopron, Fac Forestry, Dept Bot & Nat Conservat, Bajcsy Zsilinszky U 4, H-9400 Sopron, Hungary.
Univ Padua, Dept Agron Food Nat Resources Anim & Environm, Viale Univ 16, I-35020 Legnaro, PD, Italy.
European Commiss, Joint Res Ctr JRC, I-21027 Ispra, VA, Italy.
Krasnoyarsk Sci Ctr SB RAS, Sukachev Inst Forest SB RAS, Fed Res Ctr, Akad Gorodok 50-28, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, 79 Svobodny Pr, Krasnoyarsk 660041, Russia.
Wildlife Trusts, Red Squirrels United, Mather Rd, Newark NG24 1WT, Notts, England.
Bangor Univ, Sch Nat Sci, Bangor LL57 2UW, Gwynedd, Wales.
Nat Resources Canada, Canadian Forest Serv, Atlantic Forestry Ctr, 1350 Regent St, Fredericton, NB E3C 2G6, Canada.
Univ Florence, Dept Biol, Via Madonna del Piano 6, I-50019 Sesto Fiorentino, FI, Italy.
Univ Helsinki, Helsinki Inst Sustainabil Sci HELSUS, Dept Forest Sci, POB 27, Helsinki 00014, Finland.
Forest Res, Farnham GU10 4LH, Surrey, England.
Inst Symbiosis Soe, Metulje 9, Nova Vas 1385, Slovenia.

Доп.точки доступа:
de Groot, Maarten; O'Hanlon, Richard; Bullas-Appleton, Erin; Csoka, Gyorgy; Csiszar, Agnes; Faccoli, Massimo; Gervasini, Eugenio; Kirichenko, Natalia; Korda, Marton; Marinsek, Aleksander; Robinson, Nikki; Shuttleworth, Craig; Sweeney, Jon; Tricarico, Elena; Verbrugge, Laura; Williams, David; Zidar, Simon; Veenvliet, Jana Kus; LIFE ARTEMIS project in Ljubljana [LIFE15 GIE/SI/000770]; LIFE programme, Ministry of Environment and Spatial planning of the Republic of Slovenia; Municipality of Ljubljana; Slovenian Research AgencySlovenian Research Agency - Slovenia

/ S. Rolinski, A. V. Prishchepov, G. Guggenberger [et al.] // Reg. Environ. Change. - 2021. - Vol. 21, Is. 3. - Ст. 73, DOI 10.1007/s10113-021-01799-7 . - ISSN 1436-3798
Аннотация: Changes in land use and climate are the main drivers of change in soil organic matter contents. We investigated the impact of the largest policy-induced land conversion to arable land, the Virgin Lands Campaign (VLC), from 1954 to 1963, of the massive cropland abandonment after 1990 and of climate change on soil organic carbon (SOC) stocks in steppes of Russia and Kazakhstan. We simulated carbon budgets from the pre-VLC period (1900) until 2100 using a dynamic vegetation model to assess the impacts of observed land-use change as well as future climate and land-use change scenarios. The simulations suggest for the entire VLC region (266 million hectares) that the historic cropland expansion resulted in emissions of 1.6? 1015 g (= 1.6 Pg) carbon between 1950 and 1965 compared to 0.6 Pg in a scenario without the expansion. From 1990 to 2100, climate change alone is projected to cause emissions of about 1.8 (± 1.1) Pg carbon. Hypothetical recultivation of the cropland that has been abandoned after the fall of the Soviet Union until 2050 may cause emissions of 3.5 (± 0.9) Pg carbon until 2100, whereas the abandonment of all cropland until 2050 would lead to sequestration of 1.8 (± 1.2) Pg carbon. For the climate scenarios based on SRES (Special Report on Emission Scenarios) emission pathways, SOC declined only moderately for constant land use but substantially with further cropland expansion. The variation of SOC in response to the climate scenarios was smaller than that in response to the land-use scenarios. This suggests that the effects of land-use change on SOC dynamics may become as relevant as those of future climate change in the Eurasian steppes. © 2021, The Author(s).

Scopus

Держатели документа:
Potsdam Institute for Climate Impact Research, Member of the Leibniz Association, PO Box 60 12 03, Potsdam, 14412, Germany
Department of Geosciences and Natural Resource Management, Geography, University of Copenhagen, Oster Voldgade 10, Kobenhavn K, 1350, Denmark
Institute of Steppe of the Ural Branch of the Russian Academy of Sciences, Orenburg, Russian Federation
Institut fur Bodenkunde, Leibniz Universitat Hannover, Herrenhauser Str. 2, Hannover, 30419, Germany
SB RAS, VN Sukachev Institute of Forest, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Landesamt fur Bergbau, Energie und Geologie (LBEG), Stilleweg 2, Hannover, 30655, Germany
Institute of Physicochemical and Biological Problems in Soil Science, Russian Academy of Sciences, Pushchino, Russian Federation
Leibniz Institute of Agricultural Development in Transition Economies (IAMO), Theodor-Lieser-Str. 2, Halle (Saale), 06120, Germany
Geography Department and Integrative Research Institute on Transformations of Human-Environment Systems (IRI THESys), Humboldt-Universitat zu Berlin, Unter den Linden 6, Berlin, 10099, Germany

Доп.точки доступа:
Rolinski, S.; Prishchepov, A. V.; Guggenberger, G.; Bischoff, N.; Kurganova, I.; Schierhorn, F.; Muller, D.; Muller, C.

/ S. Rolinski, A. V. Prishchepov, G. Guggenberger [et al.] // Reg. Envir. Chang. - 2021. - Vol. 21, Is. 3. - Ст. 73, DOI 10.1007/s10113-021-01799-7. - Cited References:103. - The study was part of the project Kulunda (BMBF under grant numbers 01LL0905L and 01LL0905I). We thank for financial support of the following projects: EU FP7 ERA.Net Russia Plus: 449 CLIMASTEPPE, funding Goszadanie of Institute of Steppe 'Problems of steppe management under the conditions of modern challenges: optimization of the interaction between environmental and socio-economic systems' No.AAAA-A21-121011190016-1. DFF-Danish ERC Support Program (grant number: 116491, 9127-00001B) and the BMBF project ReKKS under grant number 01LZ1704A. We also thank the GERUKA project, which is funded by the German Federal Ministry of Food and Agriculture (BMEL), the Federal Office for Agriculture and Food (BLE) and the EPIKUR project, which is funded by the Leibniz Association's 'Joint Initiative for Research and Innovation' ('Pakt fur Forschung und Innovation'). I. Kurganova acknowledges support from state assignments of the Pushchino Scientific Centre of Biological Researches of RAS (under grant number AAAA-A18-118013190177-9). The authors acknowledge help by Jannes Breier. We thank Alexander Tsypin for assistance in collection the historical land-use change datasets. We acknowledge the modelling groups, the Program for Climate Model Diagnosis and Intercomparison (PCMDI) and the WCRP's Working Group on Coupled Modelling (WGCM) for their roles in making available the WCRP CMIP3 multi-model data set. Support of this data set is provided by the Office of Science, U.S. Department of Energy. . - ISSN 1436-3798. - ISSN 1436-378XРУБ Environmental Sciences + Environmental Studies

Аннотация: Changes in land use and climate are the main drivers of change in soil organic matter contents. We investigated the impact of the largest policy-induced land conversion to arable land, the Virgin Lands Campaign (VLC), from 1954 to 1963, of the massive cropland abandonment after 1990 and of climate change on soil organic carbon (SOC) stocks in steppes of Russia and Kazakhstan. We simulated carbon budgets from the pre-VLC period (1900) until 2100 using a dynamic vegetation model to assess the impacts of observed land-use change as well as future climate and land-use change scenarios. The simulations suggest for the entire VLC region (266 million hectares) that the historic cropland expansion resulted in emissions of 1.6. 10(15) g (= 1.6 Pg) carbon between 1950 and 1965 compared to 0.6 Pg in a scenario without the expansion. From 1990 to 2100, climate change alone is projected to cause emissions of about 1.8 (+/- 1.1) Pg carbon. Hypothetical recultivation of the cropland that has been abandoned after the fall of the Soviet Union until 2050 may cause emissions of 3.5 (+/- 0.9) Pg carbon until 2100, whereas the abandonment of all cropland until 2050 would lead to sequestration of 1.8 (+/- 1.2) Pg carbon. For the climate scenarios based on SRES (Special Report on Emission Scenarios) emission pathways, SOC declined only moderately for constant land use but substantially with further cropland expansion. The variation of SOC in response to the climate scenarios was smaller than that in response to the land-use scenarios. This suggests that the effects of land-use change on SOC dynamics may become as relevant as those of future climate change in the Eurasian steppes.

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Держатели документа:
Leibniz Assoc, Potsdam Inst Climate Impact Res, POB 60 12 03, D-14412 Potsdam, Germany.
Univ Copenhagen, Dept Geosci & Nat Resource Management, Geog, Oster Voldgade 10, DK-1350 Copenhagen K, Denmark.
Russian Acad Sci, Ural Branch, Inst Steppe, Orenburg, Russia.
Leibniz Univ Hannover, Inst Bodenkunde, Herrenhauser Str 2, D-30419 Hannover, Germany.
RAS, VN Sukachev Inst Forest, SB, Krasnoyarsk 660036, Russia.
Landesamt Bergbau Energie & Geol LBEG, Stilleweg 2, D-30655 Hannover, Germany.
Russian Acad Sci, Inst Physicochem & Biol Problems Soil Sci, Pushchino, Russia.
Leibniz Inst Agr Dev Transit Econ IAMO, Theodor Lieser Str 2, D-06120 Halle, Saale, Germany.
Humboldt Univ, Geog Dept, Unter Linden 6, D-10099 Berlin, Germany.
Humboldt Univ, Integrat Res Inst Transformat Human Environm Syst, Unter Linden 6, D-10099 Berlin, Germany.

Доп.точки доступа:
Rolinski, Susanne; Prishchepov, Alexander V.; Guggenberger, Georg; Bischoff, Norbert; Kurganova, Irina; Schierhorn, Florian; Muller, D.; Muller, C.; Prishchepov, Alexander; project Kulunda (BMBF)Federal Ministry of Education & Research (BMBF) [01LL0905L, 01LL0905I]; EU FP7 ERA.Net Russia Plus [449 CLIMASTEPPE]; Institute of SteppeRussian Academy of Sciences [AAAA-A21-121011190016-1]; DFF-Danish ERC Support Program [116491, 9127-00001B]; BMBF project ReKKSFederal Ministry of Education & Research (BMBF) [01LZ1704A]; German Federal Ministry of Food and Agriculture (BMEL); Federal Office for Agriculture and Food (BLE); EPIKUR project - Leibniz Association's 'Joint Initiative for Research and Innovation' ('Pakt fur Forschung und Innovation'); Pushchino Scientific Centre of Biological Researches of RAS [AAAA-A18-118013190177-9]

/ L. Gandois, N. I. Tananaev, A. Prokushkin [et al.] // J. Geophys. Res.-Biogeosci. - 2021. - Vol. 126, Is. 10. - Ст. e2020JG006152, DOI 10.1029/2020JG006152. - Cited References:97. - This research was supported by the "Institut ecologie et environnement" of the French "Centre National de la Recherche Scientifique" (CNRS-INEE) through the PEPS program "Blanc" 2015, the "Institut des Sciences de l.univers" through the EC2CO program, a Marie Curie International Reintegration Grant (TOMCAR-Permafrost #277059) within the 7th European Community Framework Program, the mobility program of INPT, and the CNRS Russian-French cooperation "CAR-WET-SIB." The ERANet-LAC joint program (METHANOBASE ELAC2014_DCC-0092), as well as the Russian Fund for Basic Research, Projects No. 18-05-60240-Arctic (N.T., A.P.) and 18-05-60203 (A.P.) provided additional support. The Siberian Branch of the Russian Academy of Sciences supports the Igarka Geocryology Laboratory through its field research facilities support program. Historical geodetic references, pile heights and gauging station descriptions were provided by Turukhansk hydrometeorological observatory staff, regional division of Roshydromet. The authors thank Anatoly Pimov for great help in the field, Arnaud Mansat for the map for Figure 1, Frederic Julien, Virginie Payre-Suc and Didier Lambrigot for the analysis of DOC and major elements (PAPC platform, EcoLab laboratory), Sergei Titov and Roman Kolosov for the analysis at Sukachev Institute of Forest SB RAS and Christine Hatte (LSCE laboratory) for the 14C analysis of DOC. . - ISSN 2169-8953. - ISSN 2169-8961РУБ Environmental Sciences + Geosciences, Multidisciplinary

Аннотация: Intense climate change and permafrost degradation impact northern watersheds and ultimately organic carbon transfer from terrestrial to aquatic ecosystems. We investigated the contemporary dissolved organic carbon (DOC) dynamics in a northern catchment underlain by discontinuous permafrost (Graviyka River, northern Siberia), where historical meteorological and hydrological data are available since 1936. Mean annual air temperature (MAAT), in contrast to precipitation and discharge was found to show a significant increasing trend since 1950. Using in situ sensing of fluorescent dissolved organic matter (fDOM), we estimated DOC concentrations at a high temporal frequency (1h) during 3 years (2015-2018), and calculated annual specific fluxes of 5.2-5.5 g C m(2) yr(-1). High DOC concentrations (above 10 mg L-1) are sustained all year, exhibiting nearly chemostatic behavior. Nevertheless, the high-frequency survey of DOC and other water parameters revealed the seasonality of DOC origin and pathways in the watershed. The spring freshet dominates the annual export (up to 80%), but summer and autumn floods can also contribute up to 9% and 8% respectively. The high-frequency sampling was able to capture the specific dynamic of DOC concentration during spring flood (DOC peak preceding discharge, dilution during the spring freshet) and summer and autumn floods (contribution of DOC-rich, low conductivity water). These observations suggest a significant contribution of organic-rich water originating in peatlands, potentially from degrading palsas. The study demonstrates both that high-frequency sampling is essential to capture key events for DOC export, and that more long-term monitoring is urgently needed in these rapidly evolving watersheds.

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Держатели документа:
Univ Toulouse, Lab Ecol Fonct & Environm, CNRS, INPT,UPS, Toulouse, France.
Russian Acad Sci, Melnikov Permafrost Inst, Yakutsk, Russia.
Russian Acad Sci, Sukachev Inst Forest, Krasnoyarsk, Russia.
Siberian Fed Univ, Krasnoyarsk, Russia.

Доп.точки доступа:
Gandois, L.; Tananaev, N., I; Prokushkin, A.; Solnyshkin, I.; Teisserenc, R.; "Institut ecologie et environnement" of the French "Centre National de la Recherche Scientifique" (CNRS-INEE) through the PEPS program "Blanc" 2015; "Institut des Sciences de l.univers" through the EC2CO program, a Marie Curie International Reintegration Grant (TOMCAR-Permafrost) within the 7th European Community Framework Program [277059]; INPT; CNRS Russian-French cooperation "CAR-WET-SIB"; ERANet-LAC joint program [METHANOBASE ELAC2014_DCC-0092]; Russian Fund for Basic ResearchRussian Foundation for Basic Research (RFBR) [18-05-60240, 18-05-60203]; Siberian Branch of the Russian Academy of SciencesRussian Academy of Sciences