caa a22 4500 606218718 CHVBK 20210128101114.0 cr unu---uuuuu 210128e20150501xx s 000 0 eng 10.1007/s11104-015-2408-6 doi (NATIONALLICENCE)springer-10.1007/s11104-015-2408-6 Nitrogen leaching and ectomycorrhizal nitrogen retention capacity in a Norway spruce forest fertilized with nitrogen and phosphorus [Elektronische Daten] [Adam Bahr, Magnus Ellström, Johan Bergh, Håkan Wallander] Aims: To estimate the production of external ectomycorrhizal mycelia (EMM) in Norway spruce forests with varying nitrogen (N) and phosphorus (P) levels, and to relate this to the N retention capacity of ectomycorrhizal fungi (EMF) and N leaching. Methods: Seasonal changes in EMF production (in ingrowth mesh bags) and soil water N (in suction lysimeters) were analyzed after fertilization with N or N combined with P. The EMF N retention capacity was estimated by the addition of isotopically labeled N to the mesh bags. Results: No relationship was found between the seasonal variation in EMF growth and N leakage from the soil. However, in the mesh bags, the total assimilation of 15N by EMF was almost halved by N fertilization, while twice as much 15N leached through. Conclusions: We found a high specific N assimilation capacity per unit weight of EMF mycelia. This was unaffected by N fertilization, but the total assimilation of N by EMF was drastically reduced due to reduced production of EMM. However, N-retaining processes other than N assimilation by EMF must be taken into account to explain the losses of N after fertilization. Springer International Publishing Switzerland, 2015 Ectomycorrhiza nationallicence Nitrogen nationallicence Phosphorus nationallicence Nitrogen retention nationallicence Nitrogen leaching nationallicence Mycelium nationallicence Norway spruce nationallicence Bahr Adam Microbial Ecology, Department of Biology, Lund University, SE-223 62, Lund, Sweden aut Ellström Magnus Microbial Ecology, Department of Biology, Lund University, SE-223 62, Lund, Sweden aut Bergh Johan Department of Forestry and Wood Technology, Linnaeus University, SE-351 95, Växjö, Sweden aut Wallander Håkan Microbial Ecology, Department of Biology, Lund University, SE-223 62, Lund, Sweden aut Plant and Soil Springer International Publishing 390/1-2(2015-05-01), 323-335 0032-079X 390:1-2<323 2015 390 11104 https://doi.org/10.1007/s11104-015-2408-6 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11104-015-2408-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bahr Adam Microbial Ecology, Department of Biology, Lund University, SE-223 62, Lund, Sweden aut NATIONALLICENCE 700 1- Ellström Magnus Microbial Ecology, Department of Biology, Lund University, SE-223 62, Lund, Sweden aut NATIONALLICENCE 700 1- Bergh Johan Department of Forestry and Wood Technology, Linnaeus University, SE-351 95, Växjö, Sweden aut NATIONALLICENCE 700 1- Wallander Håkan Microbial Ecology, Department of Biology, Lund University, SE-223 62, Lund, Sweden aut NATIONALLICENCE 773 0- Plant and Soil Springer International Publishing 390/1-2(2015-05-01), 323-335 0032-079X 390:1-2<323 2015 390 11104