In forest soils along vertical profiles located in different parts of Alps, concentrations of persistent organic pollutants (POP’s), organochlorine pesticides (OCPs) like DDT’s, HCB, HCH, heptachlor, aldrin, dieldrin and mirex were measured. The contamination increase with altitude can be described to a “cold condensation effect”. In addition, the perennial atmospheric deposition of POP’s is controlled by precipitation.
COBISS.SI-ID: 2476198
Norway spruce tree ring chronologies were developed from trees growing at two different sites in Slovenia. Ring width sensitivity to summer temperature is very site-dependent, with opposing responses at alpine and lowland sites. Stable carbon isotopes respond strongly to summer temperature in both alpine and lowland stands. Height increment is likely to be dominated by local stand dynamics.
COBISS.SI-ID: 2249894
The use of width and structure of phloem and the ratios between phloem and xylem increment and dormant cambial cells can provide information on tree conditions and, consequently can be a useful tool for forest management.
COBISS.SI-ID: 2396326
Ectomycorrhizal community structure, analysed using rDNA techniques, was compared to stand, gap, soil and selected environmentally derived variables by multivariate and ordination, for pooling of ecological groups of ectomycorrhiza. Three groups of ectomycorrhiza correlated with changing environmental conditions, especially litter and soil pH, number of beech seedlings and presence of gap.
COBISS.SI-ID: 2417318
Ash dieback is a disease of Fraxinus excelsior and F. angustifolia that is caused by fungus Chalara fraxienea, teleomorph Hymenoscyphus pseudoalbidus. We have studied biology of the disease, development of teleomorph, natural enemies, individual resistance of ash, cardinal temperatures. The results will enable planning the necessary measures for protection of ash in Slovenia and Europe.
COBISS.SI-ID: 2474918