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  • Electronic Resource  (2)
  • Exclusion mechanism  (1)
  • Phytoarchaeology  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Plant and soil 64 (1982), S. 289-293 
    ISSN: 1573-5036
    Keywords: Copper flower ; Copper tolerance ; Haumaniastrum katangense ; Modified environments ; Phytoarchaeology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The distribution and dynamics ofHaumaniastrum katangense (S. Moore) duvign. et Plancke (‘copper flower’) in southern Shaba Province, Zaïre have been studied. In the course of 20 years, this species has spread well beyond its original distribution. It is a successful coloniser of manmade environments containing mineralized substrates: i.e. disturbed or non-disturbed copper/cobalt deposits; copper/cobalt mining sites; sites of precolonial smelters; verges of dirt roads dressed with mine waste; along railways carrying ore wagons. The presence ofH. katangense along the verges of railways and roads, explains the expansion of its distribution in modern times, however its occurrence over sites of precolonial copper smelting operations is of great importance in archaeology.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1573-5036
    Keywords: Silene burchelli ; Silene cobalticola ; Cobalt tolerance ; Cobalt uptake ; Copper tolerance ; Copper uptake ; Ecotype ; Exclusion mechanism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Experiments were carried out on the tolerance to and uptake of copper and cobalt by three members of a phylogenetic series of taxa within the genusSilene from Zaïre which were reputed to represent a progression of increasing adaptation to metalliferous soils. Plants studied were the widespread and presumably non-tolerantSilene burchelli var.angustifolia (B), a more tolerant variant of this taxon (E) designated an ecotype, and the metallophyteS. cobalticola (C). Studies on the effects of both metals, singly and in combination, on seed germination, seedling and plant performance and yield, and metal uptake from soil cultures, confirmed in general the sequence B〈E〈C in relation to tolerance of both copper and cobalt. The experimental evidence also supports the ecotypic status of E and points to E and C being relatively more tolerant to copper than to cobalt.
    Type of Medium: Electronic Resource
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