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

/ L. . Hellmann [et al.] // J. Geophys. Res.-Biogeosci. - 2013. - Vol. 118, Is. 1. - P68-76, DOI 10.1002/jgrg.20022. - Cited References: 76. - B. Sittler, B. Frauenberger, C. Lachenmeier, I. Pike, A. Verstege, D. Nievergelt, H. Linderson, and B. Held contributed to field and laboratory work. A. Bast and C. Ginzler provided insight on various mapping techniques. G. King and two anonymous reviewers commented on earlier manuscript versions. This work is supported by the Eva Mayr-Stihl Foundation. . - 9. - ISSN 0148-0227РУБ Environmental Sciences + Geosciences, Multidisciplinary

Аннотация: Arctic environments, where surface temperatures increase and sea ice cover and permafrost depth decrease, are very sensitive to even slight climatic variations. Placing recent environmental change of the high-northern latitudes in a long-term context is, however, complicated by too short meteorological observations and too few proxy records. Driftwood may represent a unique cross-disciplinary archive at the interface of marine and terrestrial processes. Here, we introduce 1445 driftwood remains from coastal East Greenland and Svalbard. Macroscopy and microscopy were applied for wood anatomical classification; a multi-species subset was used for detecting fungi; and information on boreal vegetation patterns, circumpolar river systems, and ocean current dynamics was reviewed and evaluated. Four conifer (Pinus, Larix, Picea, and Abies) and three deciduous (Populus, Salix, and Betula) genera were differentiated. Species-specific identification also separated Pinus sylvestris and Pinus sibirica, which account for similar to 40% of all driftwood and predominantly originate from western and central Siberia. Larch and spruce from Siberia or North America represents similar to 26% and similar to 18% of all materials, respectively. Fungal colonization caused different levels of driftwood staining and/or decay. Our results demonstrate the importance of combining wood anatomical knowledge with insight on boreal forest composition for successfully tracing the origin of Arctic driftwood. To ultimately reconstruct spatiotemporal variations in ocean currents, and to better quantify postglacial uplift rates, we recommend consideration of dendrochronologically dated material from many more circumpolar sites. Citation: Hellmann, L., W. Tegel, O. Eggertsson, F. H. Schweingruber, R. Blanchette, A. Kirdyanov, H. Gartner, and U. Buntgen (2013), Tracing the origin of Arctic driftwood, J. Geophys. Res. Biogeosci., 118, 68-76, doi:10.1002/jgrg.20022.

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Держатели документа:
[Hellmann, Lena
Schweingruber, Fritz Hans
Gaertner, Holger
Buentgen, Ulf] Swiss Fed Res Inst, WSL, CH-8903 Birmensdorf, Switzerland
[Hellmann, Lena
Buentgen, Ulf] Oeschger Ctr Climate Change Res, Bern, Switzerland
[Tegel, Willy] Univ Freiburg, Inst Forest Growth IWW, D-79106 Freiburg, Germany
[Eggertsson, Olafur] Iceland Forest Serv, Reykjavik, Iceland
[Blanchette, Robert] Univ Minnesota, Dept Plant Pathol, St Paul, MN USA
[Kirdyanov, Alexander] VN Sukachev Inst Forest SB RAS, Krasnoyarsk, Russia

Доп.точки доступа:
Hellmann, L...; Tegel, W...; Eggertsson, O...; Schweingruber, F.H.; Blanchette, R...; Kirdyanov, A...; Gartner, H...; Buntgen, U...

[Text] / U. . Buntgen [et al.] // Holocene. - 2014. - Vol. 24, Is. 5. - P627-630, DOI 10.1177/0959683614523805. - Cited References: 23. - This study is part of the ongoing 'Arctic driftwood' project funded by WSL and the Eva Mayr-Stihl Foundation. The Russian NorthEastern Federal University in Yakutsk and the Russian Foundation for Basic Research (RFBR-12-04-00542), as well as the interdisciplinary projects from SB RAS, provided additional financial and logistical support. UB was supported by the Operational Programme of Education for Competitiveness of Ministry of Education, Youth and Sports of the Czech Republic (project: 'Building Up a Multidisciplinary Scientific Team Focussed on Drought', no. CZ.1.07/2.3.00/20.0248). . - ISSN 0959-6836. - ISSN 1477-0911РУБ Geography, Physical + Geosciences, Multidisciplinary

Аннотация: Today, there are only a handful of millennial-long and annually resolved tree-ring chronologies in existence. Explicit gaps in the global distribution of these regional chronologies together with an overall declining sample size back in time compel a community-wide challenge to discover new tree ring-based climate proxy records. Here, we present evidence for a yet unexplored palaeoenvironmental archive, define allied research tasks and emphasize probable hurdles within and beyond academia, in pursuit of answering this challenge.

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Держатели документа:
[Buentgen, Ulf
Hellmann, Lena] Swiss Fed Res Inst WSL, CH-8903 Birmensdorf, Switzerland
[Buentgen, Ulf
Hellmann, Lena] Oeschger Ctr Climate Change Res OCCR, Bern, Switzerland
[Buentgen, Ulf] Global Change Res Ctr AS CR, Brno, Czech Republic
[Kirdyanov, Alexander V.] VN Sukachev Inst Forest, Krasnoyarsk, Russia
[Kirdyanov, Alexander V.] Siberian Fed Univ, Krasnoyarsk, Russia
[Nikolaev, Anatoly N.] North Eastern Fed Univ, Yakutsk, Russia
[Nikolaev, Anatoly N.] Melnikov Permafrost Inst, Yakutsk, Russia
[Tegel, Willy] Univ Freiburg, Freiburg, Germany
ИЛ СО РАН

Доп.точки доступа:
Buntgen, U...; Kirdyanov, A.V.; Hellmann, L...; Nikolaev, A.N.; Tegel, W...; WSL; Eva Mayr-Stihl Foundation; Russian NorthEastern Federal University in Yakutsk; Russian Foundation for Basic Research [RFBR-12-04-00542]; SB RAS; Operational Programme of Education for Competitiveness of Ministry of Education, Youth and Sports of the Czech Republic [CZ.1.07/2.3.00/20.0248]

[Text] / L. Hellmann [et al.] // Arct. Antarct. Alp. Res. - 2015. - Vol. 47, Is. 3. - P449-460, DOI 10.1657/AAAR0014-063. - Cited References:66. - This study is part of the ongoing "DW project" supported by the Eva Mayr-Stihl Foundation and the Swiss Federal Research Institute WSL. Additional support was received from the Czech project "Building up a multidisciplinary scientific team focused on drought" (No. CZ.1.07/2.3.00/20.0248). V. Trotsiuk and L. Hulsmann provided technical support. J. Ejdesgaard and E. av Kak collected DW samples on the Faroe Islands, and D. Galvan and F. Charpentier contributed to discussion. Tree-ring data for Siberia were partly assembled under the Russian Science Foundation project 14-14-00295. We are thankful to all ITRDB contributors. We thank three anonymous reviewers and A. Jennings for helpful and constructive comments. . - ISSN 1523-0430. - ISSN 1938-4246РУБ Environmental Sciences + Geography, Physical

Аннотация: Recent findings indicated spruce from North America and larch from eastern Siberia to be the dominating tree species of Arctic driftwood throughout the Holocene. However, changes in source region forest and river characteristics, as well as ocean current dynamics and sea ice extent likely influence its spatiotemporal composition. Here, we present 2556 driftwood samples from Greenland, Iceland, Svalbard, and the Faroe Islands. A total of 498 out of 969 Pinus sylvestris ring width series were cross-dated at the catchment level against a network of Eurasian boreal reference chronologies. The central Siberian Yenisei and Angara Rivers account for 91% of all dated pines, with their outermost rings dating between 1804 and 1999. Intensified logging and timber rafting along the Yenisei and Angara in the mid-20th century, together with high discharge rates, explain the vast quantity of material from this region and its temporal peak ca. 1960. Based on the combined application of wood-anatomical and dendrochronological techniques on a well-replicated data set, our results question the assumption that Arctic driftwood mainly consists of millennial-old larch and spruce. Nevertheless, data from other species and regions, together with longer boreal reference chronologies, are needed for generating reliable proxy archives at the interface of marine and terrestrial environments.

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Держатели документа:
WSL, Swiss Fed Res Inst, CH-8903 Birmensdorf, Switzerland.
Oeschger Ctr Climate Change Res, CH-3012 Bern, Switzerland.
Univ Freiburg, Inst Forest Sci IWW, D-79106 Freiburg, Germany.
VN Sukachev Inst Forest SB RAS, Krasnoyarsk 660036, Russia.
Iceland Forest Serv, IS-116 Reykjavik, Iceland.
Johannes Gutenberg Univ Mainz, D-55128 Mainz, Germany.
Inst Plant & Anim Ecol UD RAS, Ekaterinburg 620144, Russia.
North Eastern Fed Univ, Yakutsk 677000, Russia.
Melnikov Permafrost Inst, Yakutsk 677010, Russia.
Stolby Natl Wildlife Nat Reserve, Krasnoyarsk 660006, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Swiss Fed Inst Technol, Inst Terr Ecosyst, CH-8092 Zurich, Switzerland.
Global Change Res Ctr AS CR, Brno 60300, Czech Republic.

Доп.точки доступа:
Hellmann, Lena; Tegel, Willy; Kirdyanov, Alexander V.; Eggertsson, Olafur; Esper, Jan; Agafonov, Leonid; Nikolaev, Anatoly N.; Knorre, Anastasia A.; Myglan, Vladimir S.; Churakova, O.; Schweingruber, Fritz H.; Nievergelt, Daniel; Verstege, Anne; Buntgen, U.; Eva Mayr-Stihl Foundation; Swiss Federal Research Institute WSL; Czech project "Building up a multidisciplinary scientific team focused on drought" [CZ.1.07/2.3.00/20.0248]; Russian Science Foundation [14-14-00295]

/ M. Mellat, H. Bailey, K. R. Mustonen [et al.] // Front. Earth Sci. - 2021. - Vol. 9. - Ст. 651731, DOI 10.3389/feart.2021.651731. - Cited References:64. - The Pan-Arctic Precipitation Isotope Network (PAPIN) received funding from the European Union's Horizon 2020 Project INTERACT, under Grant Agreement No.730938 (JW PI). An Academy of Finland Grant (316014-JW PI). Support was also provided by a University of the Arctic Research Chairship to JW that funded isotope analyses and provided postdoctoral support for HB and K-RM and postgraduate research support for MM. A Russian Science Foundation Grant (No. 18-11-00024) to KG funded isotope analyses. SK was thankful to Russian Science Foundation (No. 20-67-46018). Russian Foundation for Basic Research (BFBR) supported isotopic analyses conducted by AP (#18-05-60203-Arktika). . - ISSN 2296-6463РУБ Geosciences, Multidisciplinary

Аннотация: Arctic sea-ice loss is emblematic of an amplified Arctic water cycle and has critical feedback implications for global climate. Stable isotopes (delta O-18, delta H-2, d-excess) are valuable tracers for constraining water cycle and climate processes through space and time. Yet, the paucity of well-resolved Arctic isotope data preclude an empirically derived understanding of the hydrologic changes occurring today, in the deep (geologic) past, and in the future. To address this knowledge gap, the Pan-Arctic Precipitation Isotope Network (PAPIN) was established in 2018 to coordinate precipitation sampling at 19 stations across key tundra, subarctic, maritime, and continental climate zones. Here, we present a first assessment of rainfall samples collected in summer 2018 (n = 281) and combine new isotope and meteorological data with sea ice observations, reanalysis data, and model simulations. Data collectively establish a summer Arctic Meteoric Water Line where delta H-2 = 7.6.delta O-18-1.8 (r(2) = 0.96, p < 0.01). Mean amount-weighted delta O-18, delta H-2, and d-excess values were -12.3, -93.5, and 4.9 parts per thousand, respectively, with the lowest summer mean delta O-18 value observed in northwest Greenland (-19.9 parts per thousand) and the highest in Iceland (-7.3 parts per thousand). Southern Alaska recorded the lowest mean d-excess (-8.2%) and northern Russia the highest (9.9 parts per thousand). We identify a range of delta O-18-temperature coefficients from 0.31 parts per thousand/degrees C (Alaska) to 0.93 parts per thousand/degrees C (Russia). The steepest regression slopes (>0.75 parts per thousand/degrees C) were observed at continental sites, while statistically significant temperature relations were generally absent at coastal stations. Model outputs indicate that 68% of the summer precipitating air masses were transported into the Arctic from mid-latitudes and were characterized by relatively high delta O-18 values. Yet 32% of precipitation events, characterized by lower delta O-18 and high d-excess values, derived from northerly air masses transported from the Arctic Ocean and/or its marginal seas, highlighting key emergent oceanic moisture sources as sea ice cover declines. Resolving these processes across broader spatial-temporal scales is an ongoing research priority, and will be key to quantifying the past, present, and future feedbacks of an amplified Arctic water cycle on the global climate system.

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Держатели документа:
Univ Oulu, Ecol & Genet Res Unit, Oulu, Finland.
Univ Oulu, Water Energy & Environm Engn Res Unit, Oulu, Finland.
Univ Alaska Anchorage, Dept Geol Sci, Anchorage, AK USA.
Ural Fed Univ, Inst Nat Sci, Ekaterinburg, Russia.
Univ Alaska, Inst Arctic Biol, Fairbanks, AK 99701 USA.
UrB Russian Acad Sci, N Laverov Fed Ctr Integrated Arctic Res, Arkhangelsk, Russia.
Fram Ctr, Norwegian Polar Inst, Tromso, Norway.
Ny Alesund Res Stn, Tromso, Norway.
Univ Calgary, Dept Geog, Calgary, AB, Canada.
Yugra State Univ, UNESCO Chair Environm Dynam & Global Climate Chan, Environm Dinam & Global Climate Change Res Ctr, Khanty Mansiysk, Russia.
Finnish Forest Adm, Metsahallitus, Muonio, Finland.
Tomsk State Univ, BIO GEO CLIM Lab, Tomsk, Russia.
Tuvan State Univ, Kyzyl, Russia.
Univ Copenhagen, Arctic Stn, Greenland, Copenhagen, Greenland.
Greenland Inst Nat Resources, Dept Environm & Mineral Resources, Nuuk, Greenland.
Univ Oulu, Oulanka Res Stn, Oulu, Finland.
Univ Toulouse, CNRS, Geosci Environm Toulouse, Toulouse, France.
Siberian Fed Univ, Fac Biol, Krasnoyarsk, Russia.
SB RAS, VN Sukachev Inst Forest, Krasnoyarsk, Akademgorodok, Russia.
Univ Turku, Biodivers Unit, Kevo Subarct Res Inst, Turku, Finland.
Sudurnes Sci & Learning Ctr, Sandgerdi, Iceland.
Univ Alaska Anchorage, Dept Biol Sci, Anchorage, AK USA.
Univ Arctic UArctic, Rovaniemi, Finland.

Доп.точки доступа:
Mellat, Moein; Bailey, Hannah; Mustonen, Kaisa-Riikka; Marttila, Hannu; Klein, Eric S.; Gribanov, Konstantin; Bret-Harte, M. Syndonia; Chupakov, Artem V.; Divine, Dmitry V.; Else, Brent; Filippov, Ilya; Hyoky, Valtteri; Jones, Samantha; Kirpotin, Sergey N.; Kroon, Aart; Markussen, Helge Tore; Nielsen, Martin; Olsen, Maia; Paavola, Riku; Pokrovsky, Oleg S.; Prokushkin, Anatoly; Rasch, Morten; Raundrup, Katrine; Suominen, Otso; Syvanpera, Ilkka; Vignisson, Solvi Runar; Zarov, Evgeny; Welker, Jeffrey M.; European Union's Horizon 2020 Project INTERACT [730938]; Academy of FinlandAcademy of FinlandEuropean Commission [316014]; University of the Arctic Research Chairship; Russian Science FoundationRussian Science Foundation (RSF) [18-11-00024, 20-67-46018]; Russian Foundation for Basic Research (BFBR) [18-05-60203-Arktika]