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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Plant and soil 66 (1982), S. 317-327 
    ISSN: 1573-5036
    Keywords: Carbon ; Competition ; Isotope ; Mosses ; Nitrogen ; Soil microbes ; Tundra ; Vascular plants
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The objective was to measure the competition for nitrogen among vascular plants, mosses, and soil microbes along a continuum of nitrogen availability, induced by carbon and nitrogen amendments, in a tussock tundra ecosystem.15N was used as a tracer. Vascular plants showed an increasing15N recovery with increasing time and with increasing nitrogen availability; the latter suggests that nitrogen was limiting vascular plant growth. Green mosses took up15N initially, but showed no significant trends with either treatment or time. There was a higher15N recovery in the soil insoluble compartment for the carbon-amended treatment than in the nitrogen-amended treatments; this suggested that carbon as an energy source limited microbial activity. After two months, the relative15N recovery fell in the order: soil microbes (≈79%)〉vascular plants (≈16%) 〉green mosses (≈2%).
    Type of Medium: Electronic Resource
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