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  • Articles: DFG German National Licenses  (3)
Source
  • Articles: DFG German National Licenses  (3)
Material
Years
  • 1
    Electronic Resource
    Electronic Resource
    Cambridge : Cambridge University Press
    Greece and Rome 11 (1964), S. 30-35 
    ISSN: 0017-3835
    Source: Cambridge Journals Digital Archives
    Topics: Archaeology , Classical Studies
    Notes: Not far north of the city of Cadmus a low bluff juts out into the flat plains of gravel and mud, alternately dry-cracked with summer drought or spongy with irrigation. The waters of Lake Copais no longer sluggishly daub its slopes, but are drained and channelled and fed—for fifty drachmas an hour—through the tiny pumping station at its base to the fields of maize and cotton. Peasant wives and daughters, barefooted, tend the subsidiary flow, raking rivulets down the planted aisles, drawing little earth dams open or shut with their odd Greek spades, skirts tucked up from clay-sloshed calves, and heads swathed in scarves against the merciless sun.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Annals of Physics 184 (1988), S. 33-61 
    ISSN: 0003-4916
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1939
    Keywords: Grazing ; Cenchrus ciliaris ; Themeda triandra ; Savanna grasses ; Shoot regrowth
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Two perennial tussock grasses of savannas were compared in a glasshouse study to determine why they differed in their ability to withstand frequent, heavy grazing; Cenchrus ciliaris is tolerant and Themeda triandra is intolerant of heavy grazing. Frequent defoliation at weekly intervals for six weeks reduced shoot biomass production over a subsequent 42 day regrowth period compared with previously undefoliated plants (infrequent) in T. triandra, but not in C. ciliaris. Leaf area of T. triandra expanded rapidly following defoliation but high initial relative growth rates of shoots were not sustained after 14 days of regrowth because of reducing light utilising efficiency of leaves. Frequently defoliated plants were slower in rate of leaf area expansion and this was associated with reduced photosynthetic capacity of newly formed leaves, lower allocation of photosynthate to leaves but not lower tiller numbers. T. triandra appears well adapted to a regime where defoliation is sufficiently infrequent to allow carbon to be fixed to replace that used in initial leaf area expansion. In contrast, C. ciliaris is better adapted to frequent defoliation than is T. triandra, because horizontally orientated nodal tillers are produced below the defoliation level. This morphological adaptation resulted in a 10-fold higher leaf area remaining after defoliation compared with similarly defoliated T. triandra, which together with the maintenance of moderate levels of light utilising efficiency, contributed to the higher leaf area and shoot weight throughout the regrowth period.
    Type of Medium: Electronic Resource
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