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

/ J. Bjorklund [et al.] // New Phytol. - 2017. - Vol. 216, Is. 3. - P728-740, DOI 10.1111/nph.14639. - Cited References:59. - This work was mainly funded by the Swiss National Science Foundation (grants iTREE CRSII3_136295 and P300P2_154543). M.V.B. was supported by the Russian Science Foundation (project no. 14-14-00219-p). H.E.C. was supported by the Swiss National Science Foundation (grant no. 160077, CLIMWOOD). P.F. was supported by the Swiss National Science Foundation (grant no. 150205, LOTFOR). G.v.A. was supported by a grant from the Swiss State Secretariat for Education, Research and Innovation SERI (SBFI C14.0104). We thank two anonymous referees for their thoughtful and constructive critiques, and also the numerous researchers who have contributed their tree-ring data to the International Tree-Ring Data Bank, IGBP PAGES/World Data Center for Paleoclimatology, NOAA/ NCDC Paleoclimatology Program; Boulder, Colorado. . - ISSN 0028-646X. - ISSN 1469-8137РУБ Plant Sciences

Аннотация: Interannual variability of wood density - an important plant functional trait and environmental proxy - in conifers is poorly understood. We therefore explored the anatomical basis of density. We hypothesized that earlywood density is determined by tracheid size and latewood density by wall dimensions, reflecting their different functional tasks. To determine general patterns of variability, density parameters from 27 species and 349 sites across the Northern Hemisphere were correlated to tree-ring width parameters and local climate. We performed the same analyses with density and width derived from anatomical data comprising two species and eight sites. The contributions of tracheid size and wall dimensions to density were disentangled with sensitivity analyses. Notably, correlations between density and width shifted from negative to positive moving from earlywood to latewood. Temperature responses of density varied intraseasonally in strength and sign. The sensitivity analyses revealed tracheid size as the main determinant of earlywood density, while wall dimensions become more influential for latewood density. Our novel approach of integrating detailed anatomical data with large-scale tree-ring data allowed us to contribute to an improved understanding of interannual variations of conifer growth and to illustrate how conifers balance investments in the competing xylem functions of hydraulics and mechanical support.

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Держатели документа:
Swiss Fed Inst Forest Snow & Landscape Res WSL, Zuercherstr 111, CH-8903 Birmensdorf, Switzerland.
Univ Gothenburg, Dept Earth Sci, Gothenburg Univ, Lab Dendrochronol, Guldhedsgatan 5a, S-40530 Gothenburg, Sweden.
Catholic Univ Louvain, Georges Lemaitre Ctr Earth & Climate Res, Earth & Life Inst, Pl Louis Pasteur, B-1348 Louvain La Neuve, Belgium.
Inst Environm Sci, Climat Change & Climate Impacts, 66 Blvd Carl Vogt, CH-1205 Geneva, Switzerland.
VN Sukachev Inst Forest SB RAS, Akad Gorodok 50,Bld 28, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Svobodny Pr 79, Krasnoyarsk 660041, Russia.
Univ Padua, Dept TeSAF, Via Univ 16, I-35020 Legnaro, PD, Italy.
Univ Arizona, Tree Ring Res Lab, 1215 E Lowell St, Tucson, AZ 85721 USA.

Доп.точки доступа:
Bjorklund, Jesper; Seftigen, Kristina; Schweingruber, Fritz; Fonti, Patrick; von Arx, Georg; Bryukhanova, Marina V.; Cuny, Henri E.; Carrer, Marco; Castagneri, Daniele; Frank, David C.; von, Georg; Swiss National Science Foundation [iTREE CRSII3_136295, P300P2_154543]; Russian Science Foundation [14-14-00219-p]; Swiss National Science Foundation (CLIMWOOD) [160077]; Swiss National Science Foundation (LOTFOR) [150205]; Swiss State Secretariat for Education, Research and Innovation SERI [SBFI C14.0104]