Description: Das Projekt "Impact of long-term exposure to elevated pCO2 on activity and populations of free living N2 fixing organisms in a temperate grassland system" wird vom Umweltbundesamt gefördert und von Universität Hohenheim, Institut für Tropische Agrarwissenschaften (Hans-Ruthenberg-Institut), Fachgebiet Pflanzenbau in den Tropen und Subtropen (490e) durchgeführt. The project aims at achieving a better understanding of the processes that drive or limit the response of grassland systems in a world of increasing atmospheric pCO2. We will test the hypothesis that the previously shown increase in below-ground allocation of C under elevated pCO2 provides the necessary energy excess and will stimulate free-living N2 fixers in a low N grassland environment. The project thus aims at assessing the occurrence and importance of free-living N2 fixers under elevated pCO2 and identify the associated microbial communities involved in order to better understand ecosystems response and sustainability of grassland systems. This project had the last opportunity to obtain soil samples from a grassland ecosystem adapted to long-term (10 year) elevated atmospheric pCO2 as the Swiss FACE experiment. The project aims to identify the relevant components of free-living diazotrophs of the microbial community using 15N stable isotope - DNA probing.
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Tierhaltungsanlage ? Stickstoff ? Wiese ? Schweiz ? Langzeitbelastung ? Grünland ? Pflanzenproduktion ? Agrarwissenschaften ? Grünlandökosystem ? Unterboden ? Bodenorganismen ? Bodenprobe ? Energie ? Isotop ? Tropengebiet ? Boden ? Bauelement ? Ökosystem ? Organismen ? Sicherheitsanalyse ? System ? unter ? Energie [benutze Unterbegriffe oder Klasse EN] ? Vermehrung ? Verteilung ? Welt ? angepasst ? bewerten ? eingeschränkt ? frei ? ortsfest ? Dauer ? Gemeinschaft ? Probe ? Projekt ? Sicherungsanordnung ? Stall ? Verantwortung ?
Region: Baden-Württemberg
Bounding box: 9° .. 9° x 48.5° .. 48.5°
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 2004-01-01 - 2024-11-29
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