[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 1938-4246
РУБ 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.
WOS,
Scopus 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]
