Details
| Original language | English |
|---|---|
| Pages (from-to) | 5-29 |
| Number of pages | 25 |
| Journal | BIOGEOCHEMISTRY |
| Volume | 136 |
| Issue number | 1 |
| Publication status | Published - 9 Sept 2017 |
Abstract
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:Porg) 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.
Keywords
- Forest ecosystem nutrition, P acquiring, P geosequence, P-recycling
ASJC Scopus subject areas
- Environmental Science(all)
- Environmental Chemistry
- Environmental Science(all)
- Water Science and Technology
- Earth and Planetary Sciences(all)
- Earth-Surface Processes
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In: BIOGEOCHEMISTRY, Vol. 136, No. 1, 09.09.2017, p. 5-29.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Soil phosphorus supply controls P nutrition strategies of beech forest ecosystems in Central Europe
AU - Lang, F.
AU - Krüger, J.
AU - Amelung, W.
AU - Willbold, S.
AU - Frossard, E.
AU - Bünemann, E. K.
AU - Bauhus, J.
AU - Nitschke, R.
AU - Kandeler, E.
AU - Marhan, S.
AU - Schulz, S.
AU - Bergkemper, F.
AU - Schloter, M.
AU - Luster, J.
AU - Guggisberg, F.
AU - Kaiser, K.
AU - Mikutta, R.
AU - Guggenberger, G.
AU - Polle, A.
AU - Pena, R.
AU - Prietzel, J.
AU - Rodionov, A.
AU - Talkner, U.
AU - Meesenburg, H.
AU - von Wilpert, K.
AU - Hölscher, A.
AU - Dietrich, H. P.
AU - Chmara, I.
N1 - Funding information: This project was carried out in the framework of the priority programme 1685 ‘‘Ecosystem Nutrition: Forest Strategies for limited Phosphorus Resources’’ funded by the DFG (DFG LA 1398/13-1, DFG AM 134/18-1, DFG BA 2821-13-1, DFG KA 1590/12-1, DFG SCHL 446/20-1, DFG KA 1673/9-1, DFG MI 1377/7-1, DFG PO 362/22-1, DFG PR 534/6-1) in cooperation with the Swiss National Foundation (SNF) (Project No. 149130 and Project No. 149138). We thank Dr. Manfred Martin (Landesamt für Geologie, Rohstoffe und Bergbau, Freiburg) for XRF spectroscopy analyses of stony fragments.
PY - 2017/9/9
Y1 - 2017/9/9
N2 - 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:Porg) 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.
AB - 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:Porg) 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.
KW - Forest ecosystem nutrition
KW - P acquiring
KW - P geosequence
KW - P-recycling
UR - http://www.scopus.com/inward/record.url?scp=85028971706&partnerID=8YFLogxK
U2 - 10.1007/s10533-017-0375-0
DO - 10.1007/s10533-017-0375-0
M3 - Article
AN - SCOPUS:85028971706
VL - 136
SP - 5
EP - 29
JO - BIOGEOCHEMISTRY
JF - BIOGEOCHEMISTRY
SN - 0168-2563
IS - 1
ER -