caa a22 4500 606219498 CHVBK 20210128101118.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s11104-015-2555-9 doi (NATIONALLICENCE)springer-10.1007/s11104-015-2555-9 Alien red oak affects soil organic matter cycling and nutrient availability in low-fertility well-developed soils [Elektronische Daten] [Eleonora Bonifacio, Marta Petrillo, Fabio Petrella, Fulvia Tambone, Luisella Celi] Background and aims: Invasive alien species can dramatically change the litter and organic matter decomposition rate, nutrient cycling and availability, thus threatening the ecosystem functionality. We assessed the effect of red oak (QR) introduction on low fertility well-developed soils, originally covered by Quercus robur L. (QC). Methods: We determined litter and soil organic matter composition and decomposition rate by combining morphological features with 13C NMR spectroscopy, NaClO oxidation and soil respiration. Total and available nutrients were also determined. Results: The sites showed different humus forms: Dysmull-Hemimoder in QC and Mor in QR. The Oi horizons had a similar composition, but the higher presence of tannins and alkyl C/O − alkyl C and aryl C/O − alkyl C ratios in QR indicated that litter was less degradable. This was confirmed by soil respiration tests, with a higher preservation of the NaClO resistant fraction along the profile, mainly due to selective accumulation of alkyl components. This was accompanied by high retention of phosphorus in the organic horizons and drastic reduction of both total and available P in the mineral horizons. Calcium was strongly affected too. Conclusions: In these well-developed soils red oak changed organic matter dynamics, reduced P availability and cation biocycling, leading the ecosystem functionality towards a no-return threshold. Springer International Publishing Switzerland, 2015 Biocycling nationallicence Phosphorus nationallicence Oligonutrients nationallicence Fragipan nationallicence Forest soils nationallicence Non-resilient ecosystem nationallicence Luvisols nationallicence Bonifacio Eleonora Università di Torino, DISAFA-Chimica Agraria e Pedologia, via L. da Vinci 44, 10095, Grugliasco, Italy aut Petrillo Marta Università di Torino, DISAFA-Chimica Agraria e Pedologia, via L. da Vinci 44, 10095, Grugliasco, Italy aut Petrella Fabio IPLA-Istituto Piante da Legno e Ambiente, corso Casale 476, 10132, Torino, Italy aut Tambone Fulvia Università di Milano, DiSAA-Ricicla Group, via Celoria 2, 20133, Milano, Italy aut Celi Luisella Università di Torino, DISAFA-Chimica Agraria e Pedologia, via L. da Vinci 44, 10095, Grugliasco, Italy aut Plant and Soil Springer International Publishing 395/1-2(2015-10-01), 215-229 0032-079X 395:1-2<215 2015 395 11104 https://doi.org/10.1007/s11104-015-2555-9 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/s11104-015-2555-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bonifacio Eleonora Università di Torino, DISAFA-Chimica Agraria e Pedologia, via L. da Vinci 44, 10095, Grugliasco, Italy aut NATIONALLICENCE 700 1- Petrillo Marta Università di Torino, DISAFA-Chimica Agraria e Pedologia, via L. da Vinci 44, 10095, Grugliasco, Italy aut NATIONALLICENCE 700 1- Petrella Fabio IPLA-Istituto Piante da Legno e Ambiente, corso Casale 476, 10132, Torino, Italy aut NATIONALLICENCE 700 1- Tambone Fulvia Università di Milano, DiSAA-Ricicla Group, via Celoria 2, 20133, Milano, Italy aut NATIONALLICENCE 700 1- Celi Luisella Università di Torino, DISAFA-Chimica Agraria e Pedologia, via L. da Vinci 44, 10095, Grugliasco, Italy aut NATIONALLICENCE 773 0- Plant and Soil Springer International Publishing 395/1-2(2015-10-01), 215-229 0032-079X 395:1-2<215 2015 395 11104