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  • Buddleia davidii  (1)
  • Half-diallel experiment  (1)
  • 1
    Electronic Resource
    Electronic Resource
    The effect of water stress on the mortality ofBetula pendula Roth. andBuddleia davidii Franch. seedlings (1982)
    Springer
    Plant and soil 64 (1982), S. 273-276 
    Details
    ISSN: 1573-5036
    Keywords: Betula pendula ; Buddleia davidii ; Polyethylene glycol ; Seedling mortality ; Soil matric potential ; Water stress
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary A simple container is described whereby small seedlings may be grown at controlled levels of water stress. The water stress was induced in the soil by an osmoticum which is separated from the soil by a semi-permeable membrane. The mortality ofBetula pendula seedlings was markedly increased at a matric potential of −1.6 bars whereas the mortality ofBuddleia davidii was only affected below −2.8 bars. This difference in tolerance to water stress at the seedling stage might not be reflected in the distribution of the species in the colonisation of chalk and sand pits in England unless there is a dry spring.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02184261
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Canonical analysis of asymmetric matrices: two applications from a study of chalk grassland in the south of England (1984)
    Springer
    Plant ecology 57 (1984), S. 53-60 
    Details
    ISSN: 1573-5052
    Keywords: Asymmetric matrices ; Canonical analysis ; Chalk grassland ; Control of relative abundance ; Half-diallel experiment ; Interference ; Leaf overtopping ; Perennial species ; Point quadrats
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Gower's (1977) method for the canonical analysis of asymmetric matrices (CAA) where the same entities index both the rows and the columns is described. This technique displays the indexing entities in a series of orthogonal planes of decreasing importance in such a way as to preserve the pattern of the asymmetry between them. The analysis is applied to a half-diallel experiment and to some leaf-overtopping data, both from a study of the control of relative abundance of perennials in chalk grassland. The results suggest a common source for the asymmetry in the very different interference and overtopping data, namely that of leaf height. It is concluded that relative abundance in the field may be determined, in part, by leaf height through aboveground interference between plants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00031930
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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