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  • THERMODYNAMICS AND COMBUSTION  (2)
  • Functional attributes  (1)
  • Meadow  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Vegetation history and archaeobotany 8 (1999), S. 261-271 
    ISSN: 1617-6278
    Keywords: Hay ; Meadow ; Pasture ; Archaeobotany ; Europe ; Farming history
    Source: Springer Online Journal Archives 1860-2000
    Topics: Archaeology , Biology
    Notes: Abstract Hay malting and hay meadows have long been of fundamental ecological, economic and social importance in temperate Europe. A variety of archaeological sources suggests that hay making may date back to the Iron Age, but direct archaeobotanical evidence for this practice is problematic. Past grassland communities are imperfectly represented and preserved in archaeobotanical assemblages, and ancient meadow and pasture communities may not resemble present-day communities in terms of management practices or botanical composition. This paper explores the potential of ‘FIBS’ (Functional Interpretation of Botanical Surveys) in the archaeobotanical investigation of ancient grassland management. The botanical composition of present-day grassland communities was analysed in terms of functional attributes (e.g. canopy height) relevant to cutting, grazing and habitat productivity. The utility of these attributes for distinguishing between present-day meadow, pasture and unmanaged grassland communities has been evaluated. Similar analyses were performed on archaeobotanical data from Neolithic to post-Medieval northwestern and central Europe. Functional shifts over time, interpreted in the light of the functional analysis of modern grassland, suggest that hay-making was well established by the Iron Age. Avenues are suggested for the refinement and further development of the FIBS methodology in the archaeobotanical investigation of grassland management.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Vegetation history and archaeobotany 7 (1998), S. 17-22 
    ISSN: 1617-6278
    Keywords: Weed ecology ; Crop husbandry ; Soil productivity ; Functional attributes ; CSR strategy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Archaeology , Biology
    Notes: Abstract A method is presented for generating data on archaeological weed species relevant to soil productivity and consequently crop husbandry. Three plant attributes (maximum canopy height, maximum canopy spread and maximum dry leaf weight per node) which are functionally related to habitat productivity were measured for 161 British annual species. These three attributes were combined to produce an index of weed size. Index values were found to differ significantly between character species of phytosociological classes from fertile and infertile habitats and to provide an objective assessment of CSR (Competitor/Stress-tolerator/Ruderal) strategysensu Grime (1974, 1979). Further work is required, however, to distinguish ‘medium-sized’ species that exploit highly disturbed and productive habitats from those of less disturbed and less productive situations.
    Type of Medium: Electronic Resource
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  • 3
    Publication Date: 2019-06-27
    Description: Numerical analysis of thermodynamic properties of condenser used with SNAP-8 mjs snap 8 heat exchangers condensers (liquefiers) thermodynamic properties
    Keywords: THERMODYNAMICS AND COMBUSTION
    Type: NASA-CR-72911 , AGC-TM-7994:70-621
    Format: application/pdf
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  • 4
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    In:  CASI
    Publication Date: 2019-06-27
    Description: Development, characteristics, and performance tests of turbine alternator assembly system and component parts
    Keywords: THERMODYNAMICS AND COMBUSTION
    Type: NASA-CR-72917 , AGC-TM-7992:70-633
    Format: application/pdf
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