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Data from: Tree species rather than type of mycorrhizal association drives inorganic and organic nitrogen acquisition in tree-tree interactions

Citation

Simon, Judy et al. (2021), Data from: Tree species rather than type of mycorrhizal association drives inorganic and organic nitrogen acquisition in tree-tree interactions, Dryad, Dataset, https://doi.org/10.5061/dryad.6djh9w117

Abstract

A field study was conducted to evaluate the effects of associated mycorrhization type on tree-tree interactions using the framework of the MyDiv tree diversity experiment established at the Bad Lauchstädt Experimental Research Station of the Helmholtz Centre for Environmental Research (UFZ) (Saxony-Anhalt, Germany). Inorganic and organic net N uptake capacity was quantified in fine roots of AM (i.e. Acer pseudoplatanus L., Fraxinus excelsior L., and Prunus avium L.) as well as EM associated tree species (i.e. Carpinus betulus L., Fagus sylvatica L., and Tilia platyphyllos Scop.) using 15N/13C isotopes. Trees grew either in monocultures or 2-species mixtures, either only ectomycorrhizal, only arbuscular mycorrhizal, or in combination. Generally, ammonium was preferred over glutamine and glutamine over nitrate. Inorganic and organic N sources were not used complementarily depending on a species´ mycorrhizal association, but their uptake rather depended on the competitor indicating species-specific effects. At the species level, inorganic and organic N acquisition differed among the studied tree species. N acquisition within tree species changed N source-specific depending on the competitor.

Methods

see publication in Tree Physiology for full description of methods

Usage Notes

Missing data are denoted by "NA".

Funding

Deutsche Stiftung Friedensforschung, Award: SI 1556/2-1

H2020 European Research Council, Award: 677232

Deutsche Stiftung Friedensforschung, Award: FZT 118

Deutsche Stiftung Friedensforschung, Award: SI 1556/4-1