scholarly journals Root vitality of Fagus sylvatica L., Quercus petraea Liebl. and Acer pseudoplatanus L. in mature mixed forest stand

2016 ◽  
Vol 58 (2) ◽  
pp. 55-61
Author(s):  
Dorota Grygoruk
Keyword(s):  
Fine Roots ◽  
Soil Layer ◽  
Quercus Petraea ◽  
Acer Pseudoplatanus ◽  
Sessile Oak ◽  
Common Beech ◽  
Natural Range ◽  
Fagus Sylvatica L ◽  
Root Vitality ◽  
Sycamore Maple

AbstractThe main task of the present study was to investigate the root vitality of common beech Fagus sylvatica L., sessile oak Quercus petraea Liebl. and sycamore maple Acer pseudoplatanus L. in the optimal g rowth conditions in south-western Poland. The study was carried out in 130-year-old mixed stand located within natural range of studied tree species. The density of roots (g/100 cm3of soil) and biomass of fine roots (g/m2) in topsoil layers (0-5 cm, 5-15 cm) were determined in the tree biogroups of the same species. The mean total root density ranged from 0.248 to 0.417 g/100 cm3in the 0-5 cm soil layer, and it decreased in the deeper soil layer (5-15 cm). There were found no statistically significant differences of total root densities between tree biogroups in topsoil layers. Diversity of fine root biomass was comparable in the tree biogroups (H’ = 1.5), but common beech showed more intensive growth of fine roots in the topsoil 0-15 cm when compared to sessile oak and sycamore maple. The results of the study point out the stability of the multi-species structure of the mixed stand studied, and consequently - the ability of beech, sessile oak and sycamore maple trees to coexist in the mixed stands - in the area of natural range of these species.

Altitudinal differentiation in growth and phenology among populations of temperate-zone tree species growing in a common garden

2009 ◽  
Vol 39 (7) ◽  
pp. 1259-1269 ◽  
Author(s):  
Yann Vitasse ◽  
Sylvain Delzon ◽  
Caroline C. Bresson ◽  
Richard Michalet ◽  
Antoine Kremer
Keyword(s):  
Abies Alba ◽  
Woody Species ◽  
Common Garden ◽  
Quercus Petraea ◽  
Acer Pseudoplatanus ◽  
Climatic Gradient ◽  
Natural Area ◽  
Ilex Aquifolium ◽  
Fagus Sylvatica L ◽  
High Elevations

The aim of the study was to determine whether there are genetic variations in growth and leaf phenology (flushing and senescence) among populations of six woody species ( Abies alba Mill., Acer pseudoplatanus L., Fagus sylvatica L., Fraxinus excelsior L., Ilex aquifolium L., and Quercus petraea (Matt.) Liebl.) along altitudinal gradients, using a common-garden experiment. We found (i) significant differences in phenology and growth among provenances for most species and (ii) evidence that these among-population differences in phenology were related to the annual temperature at the provenance sites for ash, beech, and oak. It is noteworthy that along the same climatic gradient, species can exhibit opposing genetic clines: beech populations from high elevations flushed earlier than those from low elevations, whereas we observed the opposite trend for ash and oak. For most species, significant altitudinal clines for growth were also revealed. Finally, we highlighted the fact that both phenology timing and growth rate were highly consistent from year to year. The results demonstrated that despite the proximity of the populations in their natural area, differences in altitude led to genetic differentiation in their phenology and growth. These adaptive capacities acting along a natural climatic gradient could allow populations to cope with current climate change.

scholarly journals Root biomass of Fagus sylvatica L. stands depending on the climatic conditions

2016 ◽  
Vol 58 (4) ◽  
pp. 220-227 ◽  
Author(s):  
Dorota Grygoruk
Keyword(s):  
Fagus Sylvatica ◽  
Fine Roots ◽  
Root Biomass ◽  
Fine Root ◽  
Soil Layer ◽  
Fine Root Biomass ◽  
Climatic Conditions ◽  
Forest Trees ◽  
Soil Layers ◽  
Fagus Sylvatica L

Abstract Fine root biomass of forest trees is a recognised indicator of environmental changes in the conditions of global climate change. The present study was carried out in six old-growth beech forests (112-140 years) located in different climatic conditions on the range border of Fagus sylvatica L. in Poland. The root biomass was investigated by soil coring method in the upper soil layers (0-5 cm, 5-15 cm and total layer 0-15 cm). The significantly greater total root biomass was found in the beech stands, which characterised by higher average precipitation and lower average annual temperatures in the period 2000-2005. The share of roots of diameter > 5 mm increased with increasing depth of top soils. Biomass of fine roots (diameter ≤ 2 mm) decreased with increasing depth of upper soil layers. The average biomass of fine roots ranged from 175.36 to 418.16 g m-2 in the soil layer 0-15 cm. The significant differences of fine root biomass were found between studied stands in the soil layers 0-5 cm and 0-15 cm. Also, it was found significant positive correlation between fine root biomass in the soil layer 0-15 cm and precipitation during the growing season in 2006. Precipitation in the study period was connected with very high rainfall in August 2006, repeatedly exceeding the long-term monthly levels. Regional climatic conditions, in that extreme weather events in growing seasons can significantly to affect changes of fine root biomass of forest trees, consequently, changes of relationships between the growth of above- and below-ground of the old-growth forest stands.

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