Triphenyltetrazolium chloride as an indicator of fine-root vitality and environmental stress in coniferous forest stands: Applications and limitations

1994 ◽  
Vol 159 (2) ◽  
pp. 297-300 ◽  
Author(s):  
Anna Clemensson-Lindell
Keyword(s):  
Environmental Stress ◽  
Fine Root ◽  
Coniferous Forest ◽  
Forest Stands ◽  
Triphenyltetrazolium Chloride ◽  
Root Vitality

Spatial analysis of density dependent pattern in coniferous forest stands

Vegetatio ◽  
1985 ◽  
Vol 64 (1) ◽  
pp. 29-36 ◽  
Author(s):  
Janet Franklin ◽  
Joel Michaelsen ◽  
Alan H. Strahler
Keyword(s):  
Spatial Analysis ◽  
Coniferous Forest ◽  
Forest Stands ◽  
Density Dependent

scholarly journals Response of the Norway spruce (Picea abies [L.] Karst.) root system to changing humidity and temperature conditions of the site

2008 ◽  
Vol 54 (No. 6) ◽  
pp. 245-254 ◽  
Author(s):  
O. Mauer ◽  
R. Bagár ◽  
E. Palátová
Keyword(s):  
Root System ◽  
Norway Spruce ◽  
Large Scale ◽  
Fine Root ◽  
Root System Architecture ◽  
Soil Characteristics ◽  
Vegetation Zone ◽  
Root Rots ◽  
Root Vitality ◽  
Equal Height

The Bohemian-Moravian Upland shows a large-scale decline and dieback of Norway spruce up to the forest altitudinal vegetation zone (FAVZ) 5. This phenomenon has been observed in the last 7 years and its progress is rapid. Healthy, declining and standing dry trees of equal height were mutually compared in nine forest stands (aged 3–73 years). These parameters were measured: increment dynamics, root system architecture, biomass, fine root vitality and mycorrhiza, infestation by biotic and abiotic agents. Analyses were done for 414 trees, soil characteristics and weather course data covered the period 1961–2004. Warming and precipitation deficit are the predisposition factors. Weakened trees are aggressively infested by the honey fungus (<I>Armillaria mellea</I>), and they die from root rots. In this paper we describe the mechanism of damage to and dieback of the spruce trees concerned.

Natural regeneration determines wintering bird presence in wind-damaged coniferous forest stands independent of postdisturbance logging

2015 ◽  
Vol 45 (9) ◽  
pp. 1232-1237 ◽  
Author(s):  
Sinja A.B. Werner ◽  
Jörg Müller ◽  
Marco Heurich ◽  
Simon Thorn
Keyword(s):  
Natural Regeneration ◽  
Mixed Model ◽  
Linear Mixed Model ◽  
Economic Value ◽  
Coniferous Forest ◽  
Bird Species ◽  
Forest Stands ◽  
Bird Abundance ◽  
Coniferous Trees ◽  
Mature Forest

Natural disturbances in European production forests are undesired from an economic perspective but are important drivers of biodiversity. The removal of damaged timber to restore economic value is accompanied by negative effects on various species groups, particularly breeding bird communities, and can hinder natural regeneration. However, little is known about the effect of postdisturbance logging on bird assemblages in winter when temperatures are low and food resources are unpredictable. We conducted fixed-radius point counts of wintering birds in forest stands logged or unlogged after windthrows and in mature forest stands to test our predictions that bird species densities and abundances (i) are lower in postdisturbance logged stands and (ii) depend on the amount of natural regeneration, (iii) which differs between logged and unlogged stands. Our generalized linear mixed model did not support the expected differences in bird abundance or species densities between postdisturbance logged and unlogged stands but indicated that mature forest stands harbor the highest bird abundances and species densities. The number of regenerated coniferous trees significantly positively affected wintering bird abundances in both postdisturbance logged and unlogged stands. Hence, the number of coniferous trees appears to be a main predictor of wintering bird presence.

Fire-derived charcoal affects fine root vitality in a post-fire Gmelin larch forest: field evidence

2017 ◽  
Vol 416 (1-2) ◽  
pp. 409-418 ◽  
Author(s):  
Semyon V. Bryanin ◽  
Kobayashi Makoto
Keyword(s):  
Fine Root ◽  
Larch Forest ◽  
Field Evidence ◽  
Root Vitality
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