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  Studies on the Role of Nitrogen Fixation in the Várzea Floodplain Forest - Preliminary Results Using the ¹⁵N Natural Abundance Method

Kreibich, H., & Kern, J. (2002). Studies on the Role of Nitrogen Fixation in the Várzea Floodplain Forest - Preliminary Results Using the ¹⁵N Natural Abundance Method. In R. Lieberei, H. Bianchi, V. Boehm, & C. Reisdorff (Eds.), Neotropical Ecosystems: Proceedings of the German-Brazilian Workshop, Hamburg 2000 (pp. 485-488). Geesthacht: GKSS-Forschungszentrum.

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Datensatz-Permalink: https://hdl.handle.net/11858/00-001M-0000-000F-DDDC-6 Versions-Permalink: https://hdl.handle.net/11858/00-001M-0000-000F-DDDD-4
Genre: Konferenzbeitrag

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Urheber

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 Urheber:
Kreibich, H., Autor
Kern, Jürgen1, Autor           
Affiliations:
1Working Group Tropical Ecology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_976549              

Inhalt

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Schlagwörter: N₂ fixation; Amazonian floodplain forest; δ¹⁵N; Natural abundance model
 Zusammenfassung: In a Várzea floodplain forest, nitrogen fixation of legume-rhizobium symbioses was investigated using the ¹⁵N natural abundance method. Mean δ¹⁵N values in soil were positive and ranged from 5.0 to 5.8, average δ¹⁵N value in litter was 3.9 and therefore depleted in ¹⁵N by comparison with soil. Mean δ¹⁵N values in legumes were low by comparison with non-legumes and varied between 0.94 - 4.90. In non-legumes mean δ¹⁵N values were 3.17 - 7.79. Estimation of the proportion of nitrogen derived from atmospheric N₂ resulted in mean values of 60% Ndfa for Zygia inaequalis, 37%Ndfa for Albizia multiflora and 32% Ndfa for Pterocarpus amazonum. Legume trees showed a high inter- and intraspecific variation in their per cent nitrogen derived from atmosphere (%Ndfa), but there was no significant temporal variation of nitrogen fixation by rhizobium-legume symbioses from October 1998 to April 1999. N₂ fixation was an important source of nitrogen for nodulated legume trees and therefore might have been of certain importance for the biomass production of the forest

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Sprache(n): eng - English
 Datum: 2002
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: eDoc: 31345
Anderer: 2179/S 37911
 Art des Abschluß: -

Veranstaltung

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Titel: Neotropical Ecosystems. Proceedings of the German-Brazilian Workshop, Hamburg 2000
Veranstaltungsort: Hamburg
Start-/Enddatum: 2000-09-03 - 2000-09-08

Entscheidung

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Quelle 1

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Titel: Neotropical Ecosystems : Proceedings of the German-Brazilian Workshop, Hamburg 2000
Genre der Quelle: Konferenzband
 Urheber:
Lieberei, Reinhard, Herausgeber
Bianchi, Helmut, Herausgeber
Boehm, Vera, Herausgeber
Reisdorff, Christoph, Herausgeber
Affiliations:
-
Ort, Verlag, Ausgabe: Geesthacht : GKSS-Forschungszentrum
Seiten: book with abstracts and CD-ROM with fulltexts Band / Heft: - Artikelnummer: - Start- / Endseite: 485 - 488 Identifikator: ISBN: 3-00-010691-X