Search for dissertations about: "lichen sensitivity"

Found 3 swedish dissertations containing the words lichen sensitivity.

  2. 1. Bark lesions and sensitivity to frost in beech and Norway spruce

    Author : Anna Maria Jönsson; Institutionen för naturgeografi och ekosystemvetenskap; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Picea abies; Multiple stress; Mineral nutrient balance; Liming; Lichen indices; Fagus sylvatica; Cryptococcus fagisuga; Excess nitrogen; Vitality fertilization; Plant ecology; Växtekologi;

    Abstract : Strong temperature fluctuations and pathogen attacks can cause bark lesions, visible signs of wounds in the phloem and cambium. Pathogenic insects and fungi are able to invade lesions that have not healed, further increasing the damage. READ MORE

  4. 2. Studies on spatial and temporal distributions of epiphytic lichens

    Author : Håkan Lättman; Per Milberg; Jan-Eric Mattsson; Tord Snäll; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Lichens are an important group of organisms in terms of environmental issues, conservation biology and biodiversity, principally due to their sensitivity to changes in their environment. Therefore it is important that we develop our understanding of the factors that affect lichen distribution. READ MORE

  5. 3. Isotope analysis of trace and ultra-trace elements in environmental matrices

    Author : Nicola Pallavicini; Per Andersson; Luleå tekniska universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Applied Geology; Tillämpad geologi;

    Abstract : High precision isotope ratio measurements have found increasing application in various branches of science, from classical isotope geochronology to complex multi-tracer experiments in environmental studies. Progress in analytical technologies in recent years has allowed higher quality data to be obtained through mass spectrometry. READ MORE