Aakala, T. (corresponding author, firstname.lastname@example.org) & Kuuluvainen, T. (email@example.com): Department of Forest Sciences, P.O. Box 27, FI-00014 University of Helsinki, Helsinki, Finland Wallenius, T. (firstname.lastname@example.org): Kolari Unit, Finnish Forest Research Institute, Muoniontie 21A, FI-95900, Kolari, Finland, Vantaa Unit, Finnish Forest Research Institute, P.O. Box 18, FI-01301, Vantaa, Finland Kauhanen, H. (email@example.com): Kolari Unit, Finnish Forest Research Institute, Muoniontie 21A, FI-95900, Kolari, Finland
Tree mortality episodes in the intact Picea abies-dominated taiga in the Arkhangelsk region of northern European Russia
Version of Record online: 17 JAN 2011
© 2011 International Association for Vegetation Science
Journal of Vegetation Science
Volume 22, Issue 2, pages 322–333, April 2011
How to Cite
Aakala, T., Kuuluvainen, T., Wallenius, T. and Kauhanen, H. (2011), Tree mortality episodes in the intact Picea abies-dominated taiga in the Arkhangelsk region of northern European Russia. Journal of Vegetation Science, 22: 322–333. doi: 10.1111/j.1654-1103.2010.01253.x
Co-ordinating Editor: Helge Bruelheide
- Issue online: 2 MAR 2011
- Version of Record online: 17 JAN 2011
- Received 16 March 2010, Accepted 14 December 2010
Figure S1. Examples of ring-width patterns, with timing of purported releases (dotted vertical line): a–b) gap-origin trees with high initial growth and decreasing growth with age; c–d) major releases in 1823 and 1920, e–f) false positive releases, in which the release detection is caused by the return of growth rates to their previous levels following a climate-induced decline.
Figure S2. Percentage growth change as a function of prior growth values. The boundary line (dotted black line) is fitted to the mean value of the 15 highest percentage growth change values in each 0.3-mm segment of prior growth. To improve the boundary line fit, the first two segments were divided into 0.1-mm sub-segments, and the mean value of the five highest values in each of these sub-segments was used in the boundary-line fit.
Table S1. Numbers of living and dead trees (trees per hectare), proportion of P. abies and maximum age (year of earliest tree ring) among the sampled trees, as an indication of time since the last stand-replacing disturbance.
Table S2. Decay classes (modified from Lännenpää et al. 2008). Classes 4–8 are for standing dead trees, classes 9–14 for fallen dead trees. Classes 1–3 are reserved for living trees, and were not used in the current study.
Table S3. Number of dead trees within each decay class that died during the recent tree mortality episode (1999–2004).
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