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  • 1
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    Climate change and human disturbance of fynbos vegetation during the late Holocene at Princess Vlei, Western Cape, South Africa (2011)
    Sage
    In: Holocene
    Details
    Publication Date: 2011-09-29
    Description: Pollen analysis of a core in Princess Vlei in the Fynbos Biome near Cape Town gives a 4150 year record of vegetation and climate changes followed by disturbance by colonial settlers since c . 300 years ago. Their impact replaced climate as a major factor in changing the vegetation. The chronology is based on eight radiocarbon dates. Pollen types such as Restionaceae, Ericaceae, and Proteaceae reflect changes in fynbos. Pollen indicators at the bottom of the core suggest drier conditions followed by an increase in Morella , Cyperaceae and Carpacoce pollen, which might indicate moist conditions c . 3400–2600 cal. yr BP. Drier conditions prevail c . 2600–1900 cal. yr BP. Apparent light disturbance after c . 2000 cal. yr BP might be attributed to Khoi herders. Deeper water and damp surroundings are indicated c . 1900–1000 cal. yr BP. The top of the core shows an increase of Poaceae while Restionaceae decrease with anthropogenic disturbance, including the introduction of neophytes such as Pinus ( c . 300 years ago) and Zea mays . Charcoal percentages point to intense fires after the arrival of the Europeans. Water between 105 and 75 cm indicates the development of a floating mat resulting from changes in the hydrological system possibly connected to disturbances by settlers.
    Print ISSN: 0959-6836
    Electronic ISSN: 1477-0911
    Topics: Geography , Geosciences
    Published by Sage
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  • 2
    Electronic Resource
    Electronic Resource
    Inhibition of masculine differentiation in male offspring of rabbits actively immunised against testosterone before pregnancy (1977)
    [s.l.] : Nature Publishing Group
    Nature 266 (1977), S. 647-648 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We immunised eight mature female rabbits by repeated subcutaneous injections of 2 mg testosterone-3-bovine serum albumin (T-3-BSA) dissolved in 1 ml of 0.9% saline at intervals of 2-6 weeks. For the first three injections, the antigen solution was emulsified in 1 ml of Freund's complete adjuvant. A ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/266647a0
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    Paper (German National Licenses)
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