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20 p, 546.0 KB Soil enzymes associated with carbon and nitrogen cycling in invaded and native secondary forests of northwestern Argentina / Aragón, Roxana (Universidad Nacional de Tucumán. Instituto de Ecología Regional) ; Sardans i Galobart, Jordi (Centre de Recerca Ecològica i d'Aplicacions Forestals) ; Peñuelas, Josep (Universitat Autònoma de Barcelona. Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia)
Background and aims: Alien success has frequently been associated with changes in the concentrations of soil nutrients. We aim to investigate the effects of plant invasion on soil nutrients, potential enzyme activity and litter elemental composition and stoichiometry - Methods: We compared stands of secondary forest invaded by Ligustrum lucidum and those dominated by natives, and performed litter chemical analyses on 3 native and 2 exotic tree species - Results: Soils of invaded sites had 20 and 30 % increase in β-glucosidase and alkaline phosphatase activity, higher Olsen-phosphorus (P) and potassium (K) concentrations and lower nitrogen (N) concentration and N:P, N:K and ammonium:Olsen-P ratios. [...]
2014 - 10.1007/s11104-014-2192-8
Plant and soil, Vol. 384 Núm. 1-2 (Nov. 2014) , p. 169-183  

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