caa a22 4500 606219862 CHVBK 20210128101120.0 cr unu---uuuuu 210128e20150901xx s 000 0 eng 10.1007/s11104-015-2540-3 doi (NATIONALLICENCE)springer-10.1007/s11104-015-2540-3 Influence of deep soil horizons on Ca nutrition of forest stands along a loessic soil sequence [Elektronische Daten] [Thomas Drouet, Jacques Herbauts, Daniel Demaiffe] Background and aims: Acid leached soils developed on loessic materials in Central Belgium present homogenous edaphic characteristics and similar patterns of strontium isotopic composition (87Sr/86Sr), used as tracer of the origin of calcium. This was inconsistent with the large range of 87Sr/86Sr ratios measured in leaves from beech stands developed on the sites. We hypothesised that the deep carbonate-bearing horizon (>2.5m) with low 87Sr/86Sr ratio, could be a complementary source of Ca for tree nutrition. Methods: We studied the change in foliar Sr isotopic composition and element concentrations in 12 forest sites along a soil sequence. This soil sequence was selected to include the largest range of variations in the depth at which the calcareous loess horizon occurs. In complement, root depth development was determined in six sites down to 300cm. Results: Our results reveal that Sr originating from deep carbonate influences significantly the isotopic composition of beech trees growing on loessic soils. This influence contributes from 20 to 80% to the Ca nutrition of trees depending on their position along the soil sequence. Conclusions: Despite its deep location in the soil profile, the carbonate-bearing horizon is determinant for the nutrient status of these forests. Springer International Publishing Switzerland, 2015 Calcium nationallicence Carbonate nationallicence Fagus sylvatica nationallicence Forest soils nationallicence Loess nationallicence Soil sequence nationallicence Strontium isotopes nationallicence Tree nutrition nationallicence Drouet Thomas Laboratoire d'Ecologie végétale et Biogéochimie (CP 244), Université Libre de Bruxelles (ULB), B-1050, Bruxelles, Belgium aut Herbauts Jacques Laboratoire d'Ecologie végétale et Biogéochimie (CP 244), Université Libre de Bruxelles (ULB), B-1050, Bruxelles, Belgium aut Demaiffe Daniel Laboratoire de Géochimie (CP 160/02), Université Libre de Bruxelles (ULB), B-1050, Bruxelles, Belgium aut Plant and Soil Springer International Publishing 394/1-2(2015-09-01), 373-389 0032-079X 394:1-2<373 2015 394 11104 https://doi.org/10.1007/s11104-015-2540-3 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11104-015-2540-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Drouet Thomas Laboratoire d'Ecologie végétale et Biogéochimie (CP 244), Université Libre de Bruxelles (ULB), B-1050, Bruxelles, Belgium aut NATIONALLICENCE 700 1- Herbauts Jacques Laboratoire d'Ecologie végétale et Biogéochimie (CP 244), Université Libre de Bruxelles (ULB), B-1050, Bruxelles, Belgium aut NATIONALLICENCE 700 1- Demaiffe Daniel Laboratoire de Géochimie (CP 160/02), Université Libre de Bruxelles (ULB), B-1050, Bruxelles, Belgium aut NATIONALLICENCE 773 0- Plant and Soil Springer International Publishing 394/1-2(2015-09-01), 373-389 0032-079X 394:1-2<373 2015 394 11104