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Uptake of [15N] Ammonium and [15N]Nitrate in a 140-Year-Old Spruce Stand (Picea abies) in the Fichtelgebirge (NE Bavaria)

Title data

Schmidt, Gisela ; May, Christoph ; Gebauer, Gerhard ; Schulze, Ernst-Detlef:
Uptake of [15N] Ammonium and [15N]Nitrate in a 140-Year-Old Spruce Stand (Picea abies) in the Fichtelgebirge (NE Bavaria).
In: Isotopes in Environmental and Health Studies. Vol. 32 (1996) Issue 2-3 . - pp. 141-148.
ISSN 1477-2639
DOI: https://doi.org/10.1080/10256019608036305

Abstract in another language

In April 1994 a 15N tracer pulse study was started in a 140-year-old spruce stand (Picea abies [L.] Karst.) located at the Fichtelgebirge (NE Bavaria). Highly enriched (98%) [15N]ammonium and [15N]nitrate were applied simulating wet deposition. For two growing seasons the pathways and dynamics of the tracer were followed in all compartments of spruce (needles and twigs of all age classes, stem wood and bark, roots) and understorey vegetation and in soils of the organic (L/Of and Oh) and mineral horizons (A(0-5) and A(5-10)). By variations of the application time on different plots within the growing season (spring, summer and autumn) a seasonal effect of labelling on uptake and distribution patterns was tested.First results of this tracer study indicate that young and old spruce stands do not differ basically in pattern of uptake and distribution of mineral nitrogen. There are indications that spruce uses preferentially ammonium versus nitrate and that the ratio of ammonium/nitrate which is being consumed depends on the ammonium/nitrate ratio in the soil solution. The uptake rates decrease within the growing season.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER25904
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Plant Ecology
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 11 Sep 2015 06:35
Last Modified: 03 May 2016 10:30
URI: https://eref.uni-bayreuth.de/id/eprint/19401