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Nitrate reduction and nitrate content in ash trees (Fraxinus excelsior L.) : distribution between compartments, site comparison and seasonal variation

Title data

Stadler, Jutta ; Gebauer, Gerhard:
Nitrate reduction and nitrate content in ash trees (Fraxinus excelsior L.) : distribution between compartments, site comparison and seasonal variation.
In: Trees. Vol. 6 (September 1992) Issue 4 . - pp. 236-240.
ISSN 1432-2285
DOI: https://doi.org/10.1007/BF00224342

Abstract in another language

Nitrate reductase activity (NRA), nitrate content and biomass components of leaflets, leaf stalks, old stem, current-year stem and roots of ash trees (Fraxinus excelsior L.) growing in their natural habitats were investigated. In addition, NRA, total nitrogen and nitrate concentration were analyzed in the leaves and roots of ash trees from four different field sites. The highest NRA per gram biomass and also per total compartment biomass was found in the leaflets, even though root biomass was much higher than total leaflet biomass. The highest nitrate concentrations were found in the leaf stalks. Correlations between nitrate availability in the soil and NRA in leaves were not significant due to high variability of the actual soil nitrate concentrations. The seasonal variation in foliar NRA, nitrate concentration and total nitrogen concentration is much smaller in "F. excelsior" than reported for herbaceous species and is mainly caused by changes in the actual soil nitrate availability and by senescence of the leaves.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER25894
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: 20 Nov 2015 07:29
Last Modified: 20 Nov 2015 07:29
URI: https://eref.uni-bayreuth.de/id/eprint/22904