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  • Articles  (3)
  • Inorganic Chemistry  (2)
  • C4 photosynthesis  (1)
  • 1995-1999  (1)
  • 1970-1974
  • 1910-1914  (2)
  • 1900-1904
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  • Articles  (3)
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  • 1
    Electronic Resource
    Electronic Resource
    Diversity, metabolic types and δ13C carbon isotope ratios in the grass flora of Namibia in relation to growth form, precipitation and habitat conditions (1996)
    Springer
    Oecologia 106 (1996), S. 352-369 
    Details
    ISSN: 1432-1939
    Keywords: C4 photosynthesis ; δ13C values ; Grass flora of Namibia ; Poaceae ; Geographic distribution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The grass flora of Namibia (374 species in 110 genera) shows surprisingly little variation in δ13C values along a rainfall gradient (50–600 mm) and in different habitat conditions. However, there are significant differences in the δ13C values between the metabolic types of the C4 photosynthetic pathway. NADP-ME-type C4 species exhibit the highest δ13C values (−11.7 ‰) and occur mainly in regions with high rainfall. NAD-ME-type C4 species have significantly lower δ13C values (−13.4 ‰) and dominate in the most arid part of the precipitation regime. PCK-type C4 species play an intermediate role (−12.5 ‰) and reach a maximum abundance in areas of intermediate precipitation. This pattern is also evident in genera containing species of different metabolic types. Within the same genus NAD species reach more negative δ13C values than PCK species and δ13C values decreased with rainfall. Also in Aristida, with NADP-ME-type photosynthesis, δ13C values decreased from −11 ‰ in the inland region (600 mm precipitation) to −15 ‰ near the coast (150 mm precipitation), which is a change in discrimination which is otherwise associated by a change in metabolism. The exceptional C3 species Eragrostis walteri and Panicum heterostachyum are coastal species experiencing 50 mm precipitation only. Many of the rare species and monotypic genera grow in moist habitats rather than in the desert, and they are not different in their carbon isotope ratios from the more common flora. The role of species diversity with respect to habitat occupation and carbon metabolism is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00334563
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Zur Kenntnis der Stachyose und der Lupeose (1910)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 43 (1910), S. 2230-2234 
    Details
    ISSN: 0365-9496
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.191004302179
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  • 3
    Electronic Resource
    Electronic Resource
    Über das spezifische Drehungsvermögen des Glutamins, nebst Bemerkungen über glutaminsaures Ammonium (1912)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 45 (1912), S. 257-262 
    Details
    ISSN: 0365-9496
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19120450136
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