Datum
2023-06-23Autor
Simon, JudySchlagwort
570 Biowissenschaften, Biologie 580 Pflanzen (Botanik) AminosäurenGlutaminArgininStickstoffMetadata
Zur Langanzeige
Aufsatz
Relevance of organic vs. inorganic nitrogen in intra- and interspecific competition of seven central European tree species
Zusammenfassung
Key message: When competing for nitrogen with other tree species, organic N is more important than inorganic N for most species. //
Abstract: 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.
Abstract: 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.
Zitierform
In: Trees Volume 37 / issue 5 (2023-06-23) eissn:1432-2285Förderhinweis
Gefördert im Rahmen des Projekts DEALZitieren
@article{doi:10.17170/kobra-202310188870,
author={Simon, Judy},
title={Relevance of organic vs. inorganic nitrogen in intra- and interspecific competition of seven central European tree species},
journal={Trees},
year={2023}
}
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2023-10-18T13:15:38Z 2023-10-18T13:15:38Z 2023-06-23 doi:10.17170/kobra-202310188870 http://hdl.handle.net/123456789/15114 Gefördert im Rahmen des Projekts DEAL eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ Amino acids Glutamine Arginine Inorganic nitrogen Nitrogen uptake Nitrogen acquisition 570 580 Relevance of organic vs. inorganic nitrogen in intra- and interspecific competition of seven central European tree species Aufsatz Key message: When competing for nitrogen with other tree species, organic N is more important than inorganic N for most species. // Abstract: 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. open access Simon, Judy Seiten 1583-1591 (9 Seiten) doi:10.1007/s00468-023-02418-0 Aminosäuren Glutamin Arginin Stickstoff publishedVersion eissn:1432-2285 issue 5 Trees Volume 37 false
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