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  • 1
    Digitale Medien
    Digitale Medien
    Springer
    Journal of chemical ecology 21 (1995), S. 1103-1112 
    ISSN: 1573-1561
    Schlagwort(e): Condensed tannin ; Holcus lanatus ; flowering ; vegetative ; seasonal variation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: Abstract Holcus lanatus, a temperate grass, was found to contain low but measurable concentrations of condensed tannins (CT), according to the vanillin-HCl and the butanol-HCl methods. The variation in CT concentrations between different types of tissue including leaf age and reproductive versus nonreproductive tissue was examined. There was no evidence that floral tissue contained more CT than nonreproductive tissue. A sequential extraction and analysis procedure showed a decreasing proportion of free-unbound CT and greater preponderance of protein-bound and fiber-bound CT with increasing leaf age and in dead matter. Samples collected from an agricultural pasture on two sampling dates, January 24 and March 5, 1993, showed short-term temporal variation in free-unbound CT.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Springer
    Vegetation history and archaeobotany 8 (1999), S. 261-271 
    ISSN: 1617-6278
    Schlagwort(e): Hay ; Meadow ; Pasture ; Archaeobotany ; Europe ; Farming history
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Klassische Archäologie , Biologie
    Notizen: 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.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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