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

Titelangaben

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. Bd. 6 (1992) Heft 4 . - S. 236-240.
ISSN 1432-2285
DOI: https://doi.org/10.1007/BF00224342

Abstract

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.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Zusätzliche Informationen: BAYCEER25894
Institutionen der Universität: Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Biologie > Lehrstuhl Pflanzenökologie
Forschungseinrichtungen > Zentrale wissenschaftliche Einrichtungen > Bayreuther Zentrum für Ökologie und Umweltforschung - BayCEER
Fakultäten
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Biologie
Forschungseinrichtungen
Forschungseinrichtungen > Zentrale wissenschaftliche Einrichtungen
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik
Eingestellt am: 20 Nov 2015 07:29
Letzte Änderung: 11 Jul 2023 10:00
URI: https://eref.uni-bayreuth.de/id/eprint/22904