scholarly journals Influence of site conditions on the survival of Fagus sylvatica seedlings in an old‐growth beech forest

2000 ◽  
Vol 11 (3) ◽  
pp. 369-374 ◽  
Author(s):  
Stéphanie Topoliantz ◽  
Jean‐François Ponge
Keyword(s):  
Fagus Sylvatica ◽  
Beech Forest ◽  
Site Conditions ◽  
Old Growth

Tekstura drzewostanów naturalnych w polskich parkach narodowych na tle teorii dynamiki lasu

2021 ◽  
Author(s):  
Leszek Bartkowicz ◽  
Keyword(s):  
Tree Species ◽  
Stand Structure ◽  
Basal Area ◽  
Site Conditions ◽  
Gap Dynamics ◽  
Old Growth ◽  
Mosaic Pattern ◽  
Spruce Forests ◽  
Old Growth Forest ◽  
Patch Mosaic

The aim of the study was to compare a patch-mosaic pattern in the old-growth forest stands developed in various climate and soil conditions occurring in different regions of Poland. Based on the assumption, that the patch-mosaic pattern in the forest reflect the dynamic processes taking place in it, and that each type of forest ecosystem is characterized by a specific regime of natural disturbances, the following hypotheses were formulated: (i) the patches with a complex structure in stands composed of latesuccessional, shade-tolerant tree species are more common than those composed of early-successional, light-demanding ones, (ii) the patch-mosaic pattern is more heterogeneous in optimal forest site conditions than in extreme ones, (iii) in similar site conditions differentiation of the stand structure in distinguished patches is determined by the successional status of the tree species forming a given patch, (iv) the successional trends leading to changes of species composition foster diversification of the patch structure, (v) differentiation of the stand structure is negatively related to their local basal area, especially in patches with a high level of its accumulation. Among the best-preserved old-growth forest remaining under strict protection in the Polish national parks, nineteen research plots of around 10 ha each were selected. In each plot, a grid (50 × 50 m) of circular sample subplots (with radius 12,62 m) was established. In the sample subplots, species and diameter at breast height of living trees (dbh ≥ 7 cm) were determined. Subsequently, for each sample subplot, several numerical indices were calculated: local basal area (G), dbh structure differentiation index (STR), climax index (CL) and successional index (MS). Statistical tests of Kruskal- Wallis, Levene and Generalized Additive Models (GAM) were used to verify the hypotheses. All examined forests were characterized by a large diversity of stand structure. A particularly high frequency of highly differentiated patches (STR > 0,6) was recorded in the alder swamp forest. The patch mosaic in the examined plots was different – apart from the stands with a strongly pronounced mosaic character (especially subalpine spruce forests), there were also stands with high spatial homogeneity (mainly fir forests). The stand structure in the distinguished patches was generally poorly related to the other studied features. Consequently, all hypotheses were rejected. These results indicate a very complex, mixed pattern of forest natural dynamics regardless of site conditions. In beech forests and lowland multi-species deciduous forests, small-scale disturbances of the gap dynamics type dominate, which are overlapped with less frequent medium-scale disturbances. In more difficult site conditions, large-scale catastrophic disturbances, which occasionally appear in communities formed under the influence of gap dynamics (mainly spruce forests) or cohort dynamics (mainly pine forests), gain importance.

scholarly journals Canopy gap edge determination and the importance of gap edges for plant diversity

Web Ecology ◽  
2002 ◽  
Vol 3 (1) ◽  
pp. 1-5 ◽  
Author(s):  
D. Salvador-Van Eysenrode ◽  
F. Kockelbergh ◽  
J. Bogaert ◽  
I. Impens ◽  
P. Van Hecke
Keyword(s):  
Fagus Sylvatica ◽  
Plant Diversity ◽  
Forest Cover ◽  
Beech Forest ◽  
Canopy Gaps ◽  
Canopy Gap ◽  
Structural Elements ◽  
Forest Patch ◽  
Young Forest ◽  
Maintenance Of Diversity

Abstract. Canopy gaps, i.e. openings in the forest cover caused by the fall of structural elements, are considered to be important for the maintenance of diversity and for the forest cycle. A gap can be considered as a young forest patch in the forest matrix, composed of interior surrounded by an edge, both enclosed by a perimeter. Much of the attention has been focused on the gap interior. However, at gap edges the spectrum of regeneration opportunities for plants may be larger than in the interior. Although definitions of gap are still discussed, any definition can describe it in an acceptable way, if justified, but defining edges is complicated and appropriate descriptors should be used. A method to determine gap interior and edge, using light as a descriptor, is presented with an example of gaps from a beech forest (Fagus sylvatica) in Belgium. Also, the relevance and implications of gap edges for plant diversity and calculation of forest turnover is discussed.

scholarly journals SUPPORT OF MULTISPECTRAL VERY HIGH RESOLUTION REMOTELY SENSED IMAGERY FOR OLD-GROWTH BEECH FOREST DETECTION

2010 ◽  
pp. 519-527 ◽  
Author(s):  
Silvia Di Paolo ◽  
Diego Giuliarelli ◽  
Barbara Ferrari ◽  
Anna Barbati ◽  
Piermaria Corona
Keyword(s):  
High Resolution ◽  
Remotely Sensed ◽  
Beech Forest ◽  
Old Growth ◽  
Remotely Sensed Imagery ◽  
Very High

scholarly journals Extent and distribution of beech (Fagus sylvatica L.) regeneration by adult trees individually dispersed over a spruce monoculture

2010 ◽  
Vol 56 (No. 12) ◽  
pp. 589-599 ◽  
Author(s):  
L. Dobrovolný ◽  
V. Tesař
Keyword(s):  
Dispersion Curve ◽  
Fagus Sylvatica ◽  
Mixed Forest ◽  
Beech Forest ◽  
Adult Trees ◽  
Acceptable Method ◽  
Fagus Sylvatica L ◽  
Individual Trees

Recently individually dispersed adult beech trees have regenerated in spruce monocultures and this fact could be used to manage the transformation of stands into a mixed forest. Three such cases in the fir-beech and spruce-beech forest zones were analyzed. Beech regeneration is dispersed to distances of several hundred meters regardless of the configuration of the terrain. Using a model we describe this process by a dispersion curve that can be broken up into three sections: (1) directly under the crown as the result of barochory; (2) from 15 to 30 m from the trunk, where the barochoric and zoochoric dispersal of beech nuts intersects; (3) from the "breakpoint" to farther away as a result of zoochory. Regeneration is utilizable as an optimal or at least acceptable method for creating the next economically valuable stands only in sections 1 and 2. In section 3 individual trees may be the central points for the transformation of the second successive forest generation. With spontaneous development without protection from game the density is in the range of hundreds of individuals; in protected groups density can be in the range of tens of thousands of individuals per hectare.

Dendrochronological assessment of the time since death of dead wood in an old growth Magellan's beech forest, Navarino Island (Chile)

2010 ◽  
Vol 36 (3) ◽  
pp. 329-340 ◽  
Author(s):  
FABIO LOMBARDI ◽  
CLAUDIA COCOZZA ◽  
BRUNO LASSERRE ◽  
ROBERTO TOGNETTI ◽  
MARCO MARCHETTI
Keyword(s):  
Dead Wood ◽  
Beech Forest ◽  
Time Since Death ◽  
Old Growth
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