Tree mortality in a Pinus sylvestris dominated boreal forest landscape in Vienansalo wilderness, eastern Fennoscandia
By Seppo Rouvinen, T. Kuuluvainen, J. Siitonen. 2002
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Tree mortality and its causes and spatial pattern were examined along four transects (width 40 m, length 2550–3960 m), with a total length of 12 190 m and area of 48.8 ha, in a Pinus sylvestris L. dominated, boreal forest landscape. Tree mortality was determined within a time window of 3 years by identifying those trees (dbh ≥ 10 cm) along the transects that fi tted into one of the three categories: 1) current mortality: trees that had died during the year of survey (1998), 2) recent mortality: trees that had died during the year (1997) before the survey year, and 3) predicted mortality: trees that were expected to die during the year (1999) following the survey year. Long-term tree mortality was studied on 10 plots (20 m × 100 m) by dating 87 dead trees using dendrochronological methods. The mean current mortality was 1.4 m3 ha–1 (3.7 trees ha–1). Both the recent and predicted mortalities were also 1.4 m3 ha–1. Mortality was, on the average, higher on peatlands than on mineral soils. The highest mortality was found within an area recently fl ooded by beavers. Over half of the examined trees (52%) were judged to die without any visible signs of an external abiotic cause. At the landscape scale, tree mortality was continuous although somewhat aggregated in space. Of the 66 dated standing dead Pinus trees, 23 (35%) had died during the 19th century and two during the 18th century, demonstrating that dead Pinus can remain standing for long periods of time before falling. Our results show that autogenic mortality of individual trees or small groups of trees was the predominant mode of disturbance in this Pinus dominated landscape.
Subfields: Atmospheric Science, Ecology, Evolution, Behavior and Systematics, Insect Science
View Paper: https://www.semanticscholar.org/paper/f5b0db3b268151b6ec7e65298eb418162d9b7e8f
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Citations in the corpus
- Trees dying standing in the northeastern boreal old-growth forests of Quebec: spatial patterns, rates, and temporal variation (2007, methodology): “Ripley’s K analysis has become a standard tool for analysing spatial point patterns and is widely used in forest ecology (e.g., Sterner et al. 1986; Kuuluvainen et al. 1996; Rouvinen et al. 2002).”
- Natural variability of forests as a reference for restoring and managing biological diversity in boreal Fennoscandia (2002, background): “…part of the landscape remains forest-covered, containing old trees (Axelsson and Östlund 2000), and forest dynamics are to a large extent driven by overstory tree mortality caused mainly by factors other than fi re (Rouvinen and Kuuluvainen 2001, Rouvinen et al. 2002, Kuuluvainen et al. 2002b).”
- Natural forest dynamics in boreal Fennoscandia: a review and classification (2011, background): “These general conclusions are supported by studies in which data on disturbance agents were explicitly gathered (e.g. Rouvinen et al. 2002).”