Journal
FOREST ECOLOGY AND MANAGEMENT
Volume 257, Issue 7, Pages 1577-1585Publisher
ELSEVIER
DOI: 10.1016/j.foreco.2009.01.008
Keywords
Old-growth forest; Fagus sylvatica; Fraxinus excelsior; Acer pseudoplatanus; Tree height; Hroncokovsky grun reserve; Western Carpathians; Slovakia
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In Europe, remnants of formerly widespread natural mixed forests are rare. We analyzed an exceptionally tall tree stand with a very high wood volume in Hroncokovsky grun reserve, covering 55.2 ha in Slovenske Rudohorie Mountains in central Slovakia (48 degrees 43'N and 19 degrees 35'E) between 730 and 1050 m a.s.l. We compared our data to other natural stands to see if the growing stock and tree height were higher in Hroncokovsky grun. Fifty-four circular plots of 0.05 ha each and spaced at 100 m x 100 m distance sampled the entire reserve. Within each plot, live and dead trees were measured. Number, basal area and volume of live trees and volume of CWD were calculated. Moreover, measurements of the tallest trees were conducted in the whole reserve area. Total volume of live trees and CWD in the studied reserve was 1030 m(3) per hectare. It is the second highest value ever recorded in an area of several hectares or larger in European forests. The feature that makes the stand in Hroncokovsky grun a unique one is the height of trees. In the whole reserve, about 600 trees exceeded the height of 45 m. Individuals of three deciduous species (Acer pseudoplatanus, Fraxinus excelsior, Ulmus glabra) are the tallest ones found in unmanaged forests in the whole Europe. Those of Fagus sylvatica reached height near the maximum value ever recorded. In Europe, stands of average total live and dead wood volume above 1000 m(3) ha(-1) with numerous trees above 40 m tall were probably very rare even several centuries ago, when virgin forests were widespread. Most likely, they were confined to rather small mountain areas, where rich soils supporting high stand productivity occurred along with wind-protected slopes, where natural disturbances were rare and stand turnover rate was low. (C) 2009 Elsevier B.V. All rights reserved.
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