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  • Electronic Resource  (3)
  • Silene burchelli  (2)
  • Phytoarchaeology  (1)
  • 1
    Electronic Resource
    Electronic Resource
    The impact of copper and cobalt orebodies upon the evolution of some plant species from Upper Shaba, Zaïre (1983)
    Springer
    Plant systematics and evolution 142 (1983), S. 207-221 
    Details
    ISSN: 1615-6110
    Keywords: Angiosperms ; Caryophyllaceae ; Silene burchelli ; Silene cobalticola ; Cobalt uptake ; cobalt tolerance ; copper uptake ; copper tolerance-‚evolution ; flower morphology ; leaf anatomy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The flora of the copper-cobalt ores of Upper Shaba, Zaïre, comprises some 220 taxa including 42 endemics. The origin of this flora is examined and an assessment has been made of its relationship with the flora of the high plateaux steppe-savannah (dilunguan flora). A first group consists of undifferentiated species limited to these two floras. A second group comprises cupriphilous taxa derived from closely-related and widely distributed species observed on the high plateaux and elsewhere. A third group consists of closely-related species or ecotypes confined to the areas. In theSilene burchelli complex (Caryophyllaceae) there is a gradual transition from the widespreadS. burchelli var.angustifolia on the high plateaux to a newly discoveredS. burchelli ecotype from a cupriferous outcrop at Luita, and toS. cobalticola from highly mineralized copper-cobalt deposits at Mindigi. This ecophyletic series provides a gradient of morphological anatomical, and physiological changes whose end members are distinct species. The subject of palaeoendemism and neoendemism in relation to metallophytes of Upper Shaba is also discussed. Colonisation of metalliferous soils by elements of the non-mineralised high plateau is believed to be a neoendemic process.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00985899
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Colonisation of modified metalliferous environments in Zaïre by the copper flowerHaumaniastrum katangense (1982)
    Springer
    Plant and soil 64 (1982), S. 289-293 
    Details
    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
    URL: http://dx.doi.org/10.1007/BF02184264
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Studies on copper and cobalt tolerance in three closely related taxa within the genusSilene L. (Caryophyllaceae) from Zaïre (1983)
    Springer
    Plant and soil 73 (1983), S. 377-385 
    Details
    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
    URL: http://dx.doi.org/10.1007/BF02184314
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    Paper (German National Licenses)
    Fulltext
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