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  • 11
    Electronic Resource
    Electronic Resource
    A first estimate of organic carbon storage in Holocene lake sediments in Alberta, Canada (2000)
    Springer
    Journal of paleolimnology 24 (2000), S. 395-400 
    Details
    ISSN: 1573-0417
    Keywords: carbon storage ; lake sediment ; Holocene ; Canada ; climate change ; organic matter
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences
    Notes: Abstract This paper reports a first estimate of the Holocene lake sediment carbon pool in Alberta, Canada. The organic matter content of lake sediment does not appear to depend strongly on lake size or other limnological parameters, allowing a simple first estimate in which we assume all Alberta lake sediment to have the same organic matter content. Alberta lake sediments sequester about 15 g C m-2 yr-1, for a provincial total of 0.23 Tg C yr-1, or 2.3 Pg C over the Holocene. Alberta lakes may represent as much as 1/1700 of total global, annual permanent carbon sequestration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008103605817
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    Paper (German National Licenses)
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  • 12
    Electronic Resource
    Electronic Resource
    Microbial Biomass and Community Structure in a Sequence of Soils with Increasing Fertility and Changing Land Use (2000)
    Springer
    Microbial ecology 40 (2000), S. 223-237 
    Details
    ISSN: 1432-184X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The microbial biomass and community structure of eight Chinese red soils with different fertility and land use history was investigated. Two community based microbiological measurements, namely, community level physiological profiling (CLPP) using Biolog sole C source utilization tests and phospholipid fatty acid (PLFA) profiles, were used to investigate the microbial ecology of these soils and to determine how land use alters microbial community structure. Microbial biomass-C and total PLFAs were closely correlated to organic carbon and total nitrogen, indicating that these soil microbial measures are potentially good indices of soil fertility in these highly weathered soils. Metabolic quotients and C source utilization were not correlated with organic carbon or microbial biomass. Multivariate analysis of sole carbon source utilization patterns and PLFAs demonstrated that land use history and plant cover type had a significant impact on microbial community structure. PLFAs showed these differences more than CLPP methods. Consequently, PLFA analysis was a better method for assessing broad-spectrum community differences and at the same time attempting to correlate changes with soil fertility. Soils from tea orchards were particularly distinctive in their CLPP. A modified CLPP method, using absorbance readings at 405 nm and different culture media at pH values of 4.7 and 7.0, showed that the discrimination obtained can be influenced by the culture conditions. This method was used to show that the distinctive microbial community structure in tea orchard soils was not, however, due to differences in pH alone.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002480000053
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    Paper (German National Licenses)
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  • 13
    Electronic Resource
    Electronic Resource
    Psychiatry and the medical student (1930)
    Springer
    Psychiatric quarterly 4 (1930), S. 118-126 
    Details
    ISSN: 1573-6709
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01563202
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    Paper (German National Licenses)
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  • 14
    Electronic Resource
    Electronic Resource
    I. Ueber Azimidoverbindungen (1889)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 255 (1889), S. 339-356 
    Details
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.18892550307
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    Paper (German National Licenses)
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