biodiversity; plant nutrition; nitrogen (N) cycling; phosphorus (P) cycling; soil solution; isotope tracer experiments; nitrogen (N) cycling; soil solution; isotope tracer experiments; biodiversity; phosphorus (P) cycling; plant nutrition
Guiz Jordan, Hillebrand Helmut, Borer Elisabeth, Abbas Maike, Ebeling Anne, Weigelt Alexandra, Oelmann Yvonne, Fornara Dario, Wilcke Wolfgang, Temperton Vicky, Weisser Wolfgang W. (2016), Long-term effects of plant diversity and composition on plant stoichometry., in Oikos
, 125, 613-621.
Schaller Jörg, Roscher Christiane, Hillebrand Helmut, Weigelt Alexandra, Oelmann Yvonne, Wilcke Wolfgang, Ebeling Anne, Weisser Wolfgang W. (2016), Plant diversity and functional groups affect Si and Ca pools in aboveground biomass of grassland systems., in Oecologia
, 182, 277-286.
Allan Eric, Manning Pete, Alt Fabian, Binkenstein Julia, Blaser Stefan, Blüthgen Nico, Böhm Stefan, Grassein Fabrice, Hölzel Norbert, Klaus Valentin H., Kleinebecker Till, Morrys Elisabeth Kathryn, Oelmann Yvonne, Prati Daniel, Renner Sven C., Rillig Matthias C., Schäfer Martin, Schloter Michael, Schmitt Barbara, Schöning Ingo, Schrumpf Marion, Solly Emily, Sorkau Elisabeth, Steckel Juliane, Wilcke Wolfgang + 8 further authors (2015), Land use intensification alters ecosystem multifunctionality via loss of biodiversity and changes to functional composition., in Ecology Letters
, 18, 834-843.
Wright Alexandra J., Ebeling Anne, De Kron Hans, Roscher Christiane, Weigelt Alexandra, Buchmann Nina, Buchmann Tina, Fischer Christine, Hacker Nina, Hildebrandt Anke, Leimer Sophia, Mommer Liesje, Oelmann Yvonne, Scheu Stefan, Steinauer Katja, Strecker Tanja, Weisser Wolfgang W., Wilcke Wolfgang, Eisenhauer Nico (2015), Flooding disturbances increase resource availability and productivity but reduce stability in diverse plant communities., in Nature Communications
, 6, 6092.
Hacker Nina, Ebeling Anne, Gessler Arthur, Gleixner Gerd, González Macé Odette, De Kron Hans, Lange Markus, Mommer Liesje, Eisenhauer Nico, Ravenek Janneke, Scheu Stefan, Weigelt Alexandra, Wagg Cameron, Wilcke Wolfgang, Oelmann Yvonne (2015), Plant diversity shapes microbe-rhizosphere effects on P mobilization from organic matter in soil., in Ecology Letters
, 18, 1356-1365.
Leimer Sophia, Oelmann Yvonne, Wirth Christian, Wilcke Wolfgang (2015), Time matters for plant diversity effects on nitrate leaching from grassland., in Agriculture,Ecosystems and Environment
, 211, 155-163.
Lange Markus, Habekost Make, Eisenhauer Nico, Roscher Christiane, Bessler Holger, Engels Christof, Oelmann Yvonne, Scheu Stefan, Wilcke Wolfgang, Schulze Ernst-Detlef, Gleixner Gerd (2014), Biotic and abiotic properties mediating plant diversity effects on soil microbial communities in an experimental grassland., in PLOS one
, 9, 96182.
The previous phases of the Jena Experiment demonstrated that increasing species richness (SR) (i) stimulated ammonification, (ii) influenced aboveground P storage in a similar way as N storage, and (iii) had time-dependent effects on N and P cycles. However, it remained unclear whether positive effects of SR on ammonification were cancelled out by negative effects on other N transformation processes. Furthermore, we were not able to link aboveground P cycling with soil P processes. The temporal change of the SR-N and -P cycle relationships are attributable to increased organic matter accumulation in soil of diverse plant mixtures. We propose to (i) model the effect of SR on pool sizes of 6 N pools and rates of 9 N transformations based on a tracer experiment with 15NO3- and 15NH4+ in the laboratory for all main plots. (ii) We will separately determine P release rates from soil mineral phase and soil organic matter combining kinetic extractions and incubations with an 18O-H2O isotope label to identify PO43- originating from hydrolysis of organic P in the bioavailable P pool in soil. (iii) We will continue the long-term monitoring of all relevant N and P ecosystem fluxes started in 2002. Finally, (iv) we will test if the stimulated microbial activity under species-rich plant communities accelerates the degradation of persistent organic pollutants such as polycyclic aromatic hydrocarbons (PAHs).