Relevance of organic vs. inorganic nitrogen in intra- and interspecific competition of seven central European tree species

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Trees. Springer. 2023, 37(5), pp. 1583-1591. ISSN 0931-1890. eISSN 1432-2285. Available under: doi: 10.1007/s00468-023-02418-0
Zusammenfassung

Competition for nitrogen (N) in the rhizosphere is a key process regulating a seedling´s chances for growth and survival. However, only few studies have investigated this at the individual species´ level when using a community approach. In this study, 15N incubation experiments were conducted to quantify inorganic (i.e. ammonium and nitrate) and organic (i.e. glutamine-N and arginine-N) net N-uptake capacity of seven temperate woody species co-occurring on calcareous substrate and to investigate the consequences of intra- vs. interspecific competition in a woody seedling community. The results showed that short-term net inorganic and organic N uptake capacity was unrelated to a seedling´s fast or slow growth. Furthermore, competition with other tree species did not change a seedlings´ overall capacity to take up inorganic and organic N sources. Organic N was preferred over inorganic N for most species and the preferences for specific N source shifted with competition regime and tree species. Overall, this study indicates the importance of organic N sources for N uptake in woody seedlings.

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570 Biowissenschaften, Biologie
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Plant Science
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ISO 690SIMON, Judy, 2023. Relevance of organic vs. inorganic nitrogen in intra- and interspecific competition of seven central European tree species. In: Trees. Springer. 2023, 37(5), pp. 1583-1591. ISSN 0931-1890. eISSN 1432-2285. Available under: doi: 10.1007/s00468-023-02418-0
BibTex
@article{Simon2023-06-23Relev-67300,
  year={2023},
  doi={10.1007/s00468-023-02418-0},
  title={Relevance of organic vs. inorganic nitrogen in intra- and interspecific competition of seven central European tree species},
  number={5},
  volume={37},
  issn={0931-1890},
  journal={Trees},
  pages={1583--1591},
  author={Simon, Judy}
}
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