Refine search
Results 1-10 of 25
Changes in pigment concentration and composition in Norway spruce induced by long-term exposure to low levels of ozone.
1995
Mikkelsen T.N. | Dodell B. | Lutz C.
Phytol as a possible indicator of ozone stress by Picea abies.
1995
Ekeberg D. | Jablonska A.M. | Ogner G.
Effects of acid rain on growth and nutrient concentrations in Scots pine and Norway spruce seedlings grown in a nutrient-rich soil.
1995
Back J. | Huttunen S. | Turunen M. | Lamppu J.
Calculation of water and element fluxes in a sandy forest soil taking into account the input variability
1995
Beier, C.
Influence of air pollution on the foliar nutrition of conifers in Great Britain
1995
Innes, J.L. (Forestry Commission, Alice Holt Lodge, Wrecclesham, Farnham, Surrey, GU10 4LH (United Kingdom))
BIOLEFF: three databases on air pollution effects on vegetation
1995
Bennett, J.P. | Buchen, M.J. (National Biological Survey, Wisconsin Cooperative Research Unit, Institute for Environmental Studies, University of Wisconsin, 610 Walnut St., Rm 1054, Madison, Wisconsin 53705 (USA))
Contents of free amino acids in needles of Norway spruce trees in relation to novel forest decline. Studies on trees from a site in northern Black Forest
1995
Richter, C.M. | Kranig, S. | Wild, A. (Institute of General Botany of the Johannes Gutenberg University, Saarstrasse 21, 55099 Mainz (Germany))
Response of magnesium-deficient saplings in a young, open stand of Picea abies (L.) Karst. to elevated soil magnesium, nitrogen and carbon
1995
Buchmann, N. | Oren, R. | Zimmermann, R. (Lehrstuhl Pflanzenokologie der Universitat Bayreuth, Postfach 10 12 51, 95440 Bayreuth (Germany))
Ectomycorrhizae of an Alpine spruce forest
1995
Pillukat, A. (Munich Univ. (Germany). Inst. for Systematic Botany)
The ectomycorrhizal biodiversity of selected Norway spruce stands on an Alpine limestone mountain was studied by inventories of occurring fruitbodies and descriptions of new ectomycorrhizal types. Based on fruitbody surveys a total of 137 ectomycorrhizal and 48 saprophytic species was recorded. Dependent on elevations as well as microclimatic, soil, and stand conditions there were significant differences in the fungal composition and number of species between the investigated forest plots.
Show more [+] Less [-]Mineral nutrient acquisition in nonmycorrhizal and mycorrhizal plants
1995
Marschner, H. (Hohenheim Univ., Stuttgart (Germany). Plant Nutrition Inst.)
Root-induced changes in the rhizosphere and root colonization with mycorrhizal fungi have marked influence on mineral nutrient acquisition from soils. Enhanced exudation of organic acids under phosphorus deficiency is a widespread phenomena in woody species forming root clusters. Root colonization with endomycorrhizas (AM) and ectomycorrhizas (ECM) increases the spatial availability of nutrients in the soil and enhances plant growth particulary on nutrient-poor soils. Most of these studies have been conducted under controlled environmental conditions and with annual plant species mycorrhizal with AM. Conclusions on the role of ECM colonization for nutrient acquisition of trees in forest stands are not possible at the present state of knowledge.
Show more [+] Less [-]