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Spatiotemporal Availability of Dead Wood in Protected Old-growth Forests: A Case Study from Boreal Forests in Eastern Finland

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Abstract:

Spatiotemporal patterns of standing and fallen dead trees were examined in two protected Scots pine (Pinus sylvestris L.)-Norway spruce (Picea abies (L.) Karst.) forests in eastern Finland (Pahkavaara and Pönttövaara). In Pahkavaara the volume of standing dead trees was 10 m3 ha-1 and the volume of fallen logs was 66 m3 ha-1, and in Pönttövaara the values were 48 m3 ha-1 and 107 m3 ha-1, respectively. The areas differed with respect to the tree species composition, whereas the proportion of different decay stages was similar. Decay stage and dendrochronological analyses revealed the continuity of dead wood formation. The spatial pattern of standing dead trees was usually towards clustered. The volumes of fallen logs showed a spatial autocorrelation up to distances of 10-20 m. The results also suggest that the current amount and diversity of dead wood is rather high, but that forest succession is likely to lead to a less diverse state in the future.

Keywords: COARSE WOODY DEBRIS; DENDROCHRONOLOGY; DISTURBANCE; FOREST DYNAMICS; FOREST HISTORY; NORWAY SPRUCE; SCOTS PINE; TREE MORTALITY

Document Type: Research Article

DOI: http://dx.doi.org/10.1080/02827580260138071

Publication date: August 1, 2002

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