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Lang, F.* ; Krüger, J.* ; Amelung, W.* ; Willbold, S.* ; Frossard, E.* ; Bünemann, E.K.* ; Bauhus, J.* ; Nitschke, R.* ; Kandeler, E.* ; Marhan, S.* ; Schulz, S. ; Bergkemper, F. ; Schloter, M. ; Luster, J.* ; Guggisberg, F.* ; Kaiser, K.* ; Mikutta, R.* ; Guggenberger, G.* ; Polle, A.* ; Pena, R.* ; Prietzel, J.* ; Rodionov, A.V.* ; Talkner, U.* ; Meesenburg, H.* ; von Wilpert, K.* ; Hölscher, A.* ; Dietrich, H.P.* ; Chmara, I.*

Soil phosphorus supply controls P nutrition strategies of beech forest ecosystems in Central Europe.

Biogeochemistry 136, 5–29 (2017)
Publ. Version/Full Text Research data DOI
Open Access Hybrid
Creative Commons Lizenzvertrag
Phosphorus availability may shape plant–microorganism–soil interactions in forest ecosystems. Our aim was to quantify the interactions between soil P availability and P nutrition strategies of European beech (Fagus sylvatica) forests. We assumed that plants and microorganisms of P-rich forests carry over mineral-bound P into the biogeochemical P cycle (acquiring strategy). In contrast, P-poor ecosystems establish tight P cycles to sustain their P demand (recycling strategy). We tested if this conceptual model on supply-controlled P nutrition strategies was consistent with data from five European beech forest ecosystems with different parent materials (geosequence), covering a wide range of total soil P stocks (160–900 g P m −2 ; < 1 m depth). We analyzed numerous soil chemical and biological properties. Especially P-rich beech ecosystems accumulated P in topsoil horizons in moderately labile forms. Forest floor turnover rates decreased with decreasing total P stocks (from 1/5 to 1/40 per year) while ratios between organic carbon and organic phosphorus (C:P org ) increased from 110 to 984 (A horizons). High proportions of fine-root biomass in forest floors seemed to favor tight P recycling. Phosphorus in fine-root biomass increased relative to microbial P with decreasing P stocks. Concomitantly, phosphodiesterase activity decreased, which might explain increasing proportions of diester-P remaining in the soil organic matter. With decreasing P supply indicator values for P acquisition decreased and those for recycling increased, implying adjustment of plant–microorganism–soil feedbacks to soil P availability. Intense recycling improves the P use efficiency of beech forests.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Forest Ecosystem Nutrition ; P Acquiring ; P Geosequence ; P-recycling; Magnetic-resonance-spectroscopy; Microbial Biomass Calibration; Fumigation-extraction Method; Temperate Deciduous Forest; Fagus-sylvatica L.; Organic Phosphorus; Phosphatase-activity; Terrestrial Ecosystems; Nutrient Dynamics; Grassland Soil
ISSN (print) / ISBN 0168-2563
e-ISSN 1573-515X
Journal Biogeochemistry
Quellenangaben Volume: 136, Issue: 1, Pages: 5–29 Article Number: , Supplement: ,
Publisher Springer
Publishing Place Dordrecht
Reviewing status Peer reviewed
Institute(s) Research Unit Comparative Microbiome Analysis (COMI)