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Hofmann, Kerstin ; Heuck, Christine ; Spohn, Marie:
Phosphorus resorption by young beech trees and soil phosphatase activity as dependent on phosphorus availability.
In: Oecologia.
Bd. 181
(2016)
.
- S. 369-379.
ISSN 1432-1939
DOI: https://doi.org/10.1007/s00442-016-3581-x
Abstract
Motivated by decreasing foliar phosphorus (P) concentrations in Fagus sylvatica L. forests, we studied P recycling depending on P fertilization in mesocosms withjuvenile trees and soils of two contrasting F. sylvatica L.forests in a greenhouse. We hypothesized that forests withlow soil P availability are better adapted to recycle P than forests with high soil P availability. The P resorption efficiency from senesced leaves was significantly higher at the P-poor site (70 %) than at the P-rich site (48 %). P fertilization decreased the resorption efficiency significantly at the P-poor site to 41 %, while it had no effect at the P-rich site. Both acid and alkaline phosphatase activity were higher in the rhizosphere of the P-poor than of the P-rich site by 53 and 27 %, respectively, while the activities did not differin the bulk soil. Fertilization decreased acid phosphataseactivity significantly at the P-poor site in the rhizosphere,but had no effect on the alkaline, i.e., microbial, phosphataseactivity at any site. Acid phosphatase activity in the P-poor soil was highest in the rhizosphere, while in the P-rich soil, it was highest in the bulk soil. We conclude that F. sylvatica resorbed P more efficiently from senescentleaves at low soil P availability than at high P availability and that acid phosphatase activity in the rhizosphere but not in the bulk soil was increased at low P availability. Moreover, we conclude that in the P-rich soil, microbial phosphatases contributed more strongly to total phosphataseactivity than plant phosphatases.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Zusätzliche Informationen: | BAYCEER132187 |
| Institutionen der Universität: | Forschungseinrichtungen Forschungseinrichtungen > Zentrale wissenschaftliche Einrichtungen Forschungseinrichtungen > Zentrale wissenschaftliche Einrichtungen > Bayreuther Zentrum für Ökologie und Umweltforschung - BayCEER Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften > Lehrstuhl Bodenökologie Fakultäten Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik |
| Eingestellt am: | 11 Aug 2016 07:50 |
| Letzte Änderung: | 30 Okt 2024 12:46 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/33889 |