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  • 1
    Electronic Resource
    Electronic Resource
    Application of multivariate methods to a study of community composition and structure in an escarpment woodland in northeast Ireland (1984)
    Springer
    Plant ecology 55 (1984), S. 93-104 
    Details
    ISSN: 1573-5052
    Keywords: Basalt ; Deciduous woodland ; Diversity ; Reciprocal averaging ; Size structure ; Stability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Multivariate models based independently on the floristic and environmental attributes of sample quadrats from an escarpment woodland, were constructed. They were used to interpret the ecology of plant species distribution and to investigate the size structure of tree populations. Site instability, soil water status, and past management and grazing pressure were found to exert major influences on the composition and structure of the woodland. It is suggested that early mortality associated with site instability, plays an important role in maintaining the floristic diversity of vascular plants in the woodland ground flora, by increasing the frequency of tree replacement. This may have the effect of preventing canopy closure and any associated, detrimental effects of low light intensities. The relevance of the work of the conservation management of escarpment woods in Northern Ireland is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00037331
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Vegetation and soils of seminatural deciduous woods in northeast Ireland (1986)
    Springer
    Plant ecology 64 (1986), S. 67-74 
    Details
    ISSN: 1573-5052
    Keywords: Basalt ; Conservation ; Deciduous wood ; DECORANA ; PCA ; TWINSPAN ; Woodland soil
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Seminatural deciduous woods associated mainly with basaltic escarpments were surveyed in northeast Ireland to investigate the relationships between soil physical and chemical characteristics and community composition. Gradients of floristic composition in the sample stands pointed to soil acidity, soil mineral nutrient status and the degree of soil waterlogging as principal factors influencing the ground flora. The physico-chemical characteristics of the woodland soils showed distinctive differences which were correlated with community composition, confirming the considerable effect of the soil environment. Soil texture was shown to be a key factor influencing the ground flora, mainly through its influence on soil water status and acidity. Better drained soils subject to minimal disturbance by people or physiographic processes, were found to have the highest content of water soluble nitrogen, available phosphorus and exchangeable potassium. An interaction between soils, site geomorphology and land use suggested that the value of the woods as controls against which the effects of agricultural land use on soils can be monitored, is limited.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00044782
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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