Description: Das Projekt "Interactions and regulation of N2 forming processes in the plant rhizosphere" wird vom Umweltbundesamt gefördert und von Universite de Neuchatel, Faculte des Sciences, Institut de Botanique, Laboratoire de Microbiologie durchgeführt. In this project we wish to investigate a so far neglected process in the terrestrial N-cycle: the anaerobic oxidation of ammonium ('anammox'), which has been shown in marine environments to contribute significantly to dinitrogen formation. We hypothesize that anoxic pockets in soil aggregates and the rhizosphere of plants represent suitable microenvironments where the anammox process may be active. With an interdisciplinary approach, combining methods from biogeochemistry and molecular microbial ecology, we aim at detecting and quantifying anammox in terrestrial environments. PCR based techniques will be applied for screening and identification of anammox bacteria in a wide range of habitats. The relative contribution of anammox and denitrification to N2 formation and the factors controlling the two processes and their interactions will be explored in microcosm experiments with 15N additions. The expected results will improve our understanding of N2 producing processes in soils and lead to a more complete picture of the terrestrial N-cycle.
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Denitrifikation ? Ammonium ? Stickstoffelimination ? Ammoniak ? Biogeochemie ? Anaerobe Bedingungen ? Fischer-Tropsch-Verfahren ? Stickstoff ? Blei ? Bodenverbesserung ? Habitat ? Mikroökologie ? Rhizosphäre ? Bakterien ? Terrestrisches Ökosystem ? Oxidation ? Technik ? Meeresgewässer ? Boden ? Bodenprozess ? Bildung ? Verfahrensvorschrift ? Adsox-Verfahren ? Beitrag ? Bram-Verfahren ? Ergebnis ? Kreisprozess ? Methode ? Projekt ? anammox ? nitrogen cycling ?
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 2005-04-01 - 2008-10-31
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