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Effects of season and urea treatment on infection of stumps of Picea abies by Heterobasidion annosum in stands on former arable land
The aim was to evaluate the effects of season and urea treatment on the frequency of infection of stumps of Norway spruce by the root‐rot fungus Heterobasidion annosum (Fr.) Bref.
Distributions of the capacity to take up nutrients by Betula spp. and Picea abies in mixed stands
Abstract We examined the distribution of nutrient uptake (i.e. uptake of radioactive isotopes of nutrients) in the forest floor and lower part of the rooting zone (mineral soil) for birch (Betula
Changes in the effects of whole-tree harvesting on soil chemistry during 10 years of stand development
Abstract Whole tree harvesting depletes soil nutrients and increases soil acidification more than conventional stem harvesting. This study examined whether this effect persists through stand
Ground vegetation composition and heterogeneity in pure Norway spruce and mixed Norway spruce - birch stands
Les auteurs ont examine l'effet sur la vegetation au sol de l'introduction d'arbres decidus dans un peuplement pur d'epicea. L'abondance et la composition de la vegetation au sol, dans des
Changes in forest-floor chemistry caused by a birch admixture in Norway spruce stands.
Abstract The aim of this study was to determine how soil chemistry and the distribution of fine roots (
The effect of harvest intensity on long-term calcium dynamics in soil and soil solution at three coniferous sites in Sweden
Abstract Removal of logging residues may lead to soil and surface water acidification by lowering the amount of buffering base cations. Long-term treatment differences in soil exchangeable calcium
Long-term soil calcium depletion after conventional and whole-tree harvest
Abstract Whole-tree harvest (WTH) may compromise tree productivity and health and lead to soil and surface water acidification. The aim of this study was to assess the long-term change (up to circa
Isolation and characterization of a germination inhibitor from leaves of Empetrum hermaphroditum hagerup
An extract of Empetrum hermaphroditum Hagerup leaves was examined for germination inhibitors using an assay based on germination of Populus tremula L. seeds. The substances were extracted in water
Soil organisms and carbon, nitrogen and phosphorus mineralisation in Norway spruce and mixed Norway spruce – Birch stands
Abstract We examined how soil organisms and C, N and P mineralisation are affected by admixing deciduous tree species, silver birch (Betula pendula) and woollen birch (B. pubescens), in managed