In Nitrate-Rich Soil, Fallopia x bohemica Modifies Functioning of N Cycle Compared to Native Monocultures - Université Claude Bernard Lyon 1 Accéder directement au contenu
Article Dans Une Revue Diversity Année : 2020

In Nitrate-Rich Soil, Fallopia x bohemica Modifies Functioning of N Cycle Compared to Native Monocultures

Résumé

The effects of invasive species at the ecosystem level remain an important component required to assess their impacts. Here, we conducted an experimental study with labeled nitrogen in two types of soil (low and high nitrate conditions), investigating the effects of (1) the presence of Fallopia x bohemica on the traits of three native species (Humulus lupulus, Sambucus ebulus, and Urtica dioica) and (2) interspecific competition (monoculture of the invasive species, monoculture of the native species, and a mixture of invasive/native species) on nitrification, denitrification, and related microbial communities (i.e., functional gene abundances). We found that the species with the higher nitrate assimilation rate (U. dioica) was affected differently by the invasive species, with no effect or even an increase in aboveground biomass and number of leaves. F. x bohemica also decreased denitrification, but only in the soil with high nitrate concentrations. The impacts of the invasive species on nitrification and soil microorganisms depended on the native species and the soil type, suggesting that competition for nitrogen between plants and between plants and microorganisms is highly dependent on species traits and environmental conditions. This research highlights that studies looking at the impacts of invasive species on ecosystems should consider the plant–soil–microorganism complex as a whole.
Fichier principal
Vignette du fichier
2020_Cantarel_Diversity.pdf (1.74 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-02562359 , version 1 (09-06-2021)

Licence

Paternité

Identifiants

Citer

Amélie A.M. Cantarel, Soraya Rouifed, Laurent Simon, Julien Bourg, Jonathan Gervaix, et al.. In Nitrate-Rich Soil, Fallopia x bohemica Modifies Functioning of N Cycle Compared to Native Monocultures. Diversity, 2020, 12 (4), pp.d12040156. ⟨10.3390/d12040156⟩. ⟨hal-02562359⟩
104 Consultations
61 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More