Pena, Rodica

[["dc.bibliographiccitation.firstpage","127"],["dc.bibliographiccitation.journal","Soil Biology and Biochemistry"],["dc.bibliographiccitation.lastpage","137"],["dc.bibliographiccitation.volume","98"],["dc.contributor.author","Zavišić, Aljoša"],["dc.contributor.author","Nassal, Pascal"],["dc.contributor.author","Yang, Nan"],["dc.contributor.author","Heuck, Christine"],["dc.contributor.author","Spohn, Marie"],["dc.contributor.author","Marhan, Sven"],["dc.contributor.author","Pena, Rodica"],["dc.contributor.author","Kandeler, Ellen"],["dc.contributor.author","Polle, Andrea"],["dc.date.accessioned","2017-09-07T11:50:48Z"],["dc.date.available","2017-09-07T11:50:48Z"],["dc.date.issued","2016"],["dc.description.abstract","Phosphorus (P) is an important nutrient, whose concentrations are declining in many European forest ecosystems. Here, we selected five old-aged temperate beech (Fagus sylvatica) forests that represented a sequence of decreasing soil P resources. We addressed the following hypotheses: (i) root P concentrations correspond to soil P concentrations, when P availability is suboptimal for tree nutrition, (ii) decreasing soil P concentrations, and increasing host P demand foster increasing ectomycorrhizal fungal (EMF) species richness and lead to a shift in the EMF community structure towards increasing soil exploration. We found that the decrease in P concentrations along the geosequence was less steep in the organic layer than that in the mineral topsoil. P concentrations in roots showed a positive relationship with P concentrations in soil, with a stronger correlation in coarse than in fine roots. This finding indicates that low P availability mainly affected P storage of the host. The root tips were completely colonized with EMF. In the organic layer EMF biomass was higher than that of saprophytic fungi, and correlated with inorganic P (Pi). In the mineral topsoil EMF biomass was about 10-fold lower than in the organic layer and biomass of saprophytes and microbial P, but not that of EMF, was correlated with Pi and phosphatase activities. Based on these results, we propose that beech P nutrition was mainly achieved by EMF in the organic layer. Variation in EMF species richness was unrelated to P in soil and decreased with increasing N in the organic layer. The EMF community structures were taxonomically divergent and filtered by habitat soil chemistry in the mineral layer and Pi in the organic layer between the P-rich forest and the P-poor forest. Changes in the taxonomic structures of the EMF did not result in corresponding changes in soil exploration. In conclusion, our results support a relationship between soil P concentrations and P storage in roots, but do not support mono-causal relationships between soil P and EMF species richness or hyphal soil exploration. Our results suggest that the taxonomic dissimilarities of the EMF along the P gradient were mainly driven by Pi concentrations in the organic layer and by the nutrient resources in the mineral layer."],["dc.identifier.doi","10.1016/j.soilbio.2016.04.006"],["dc.identifier.gro","3147818"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/5147"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.relation.issn","0038-0717"],["dc.title","Phosphorus availabilities in beech (Fagus sylvatica L.) forests impose habitat filtering on ectomycorrhizal communities and impact tree nutrition"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","151"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Journal of Plant Nutrition and Soil Science"],["dc.bibliographiccitation.lastpage","158"],["dc.bibliographiccitation.volume","179"],["dc.contributor.author","Yang, Nan"],["dc.contributor.author","Zavišić, Aljoša"],["dc.contributor.author","Pena, Rodica"],["dc.contributor.author","Polle, Andrea"],["dc.date.accessioned","2017-09-07T11:50:48Z"],["dc.date.available","2017-09-07T11:50:48Z"],["dc.date.issued","2016"],["dc.description.abstract","Phosphorus (P) is often a limiting macronutrient in temperate forests, but knowledge on the phenological and physiological responses of beech (Fagus sylvatica L.) to P deficiency is scarce. In this study, young beech trees were excavated with intact soil cores from two German forests, Unterlüss (LUE) with low soil P and Bad Brückenau (BBR) with high soil P concentrations. The trees were transferred to identical climatic conditions. In the subsequent growth phase phenological stages during bud burst and leaf unfolding were recorded; biomass production and total P concentrations in different tissues were measured. Seasonal fluctuations in photosynthesis and of soluble P in wood and bark exudates were determined. BBR beeches grew faster and produced more and larger leaves than the LUE beeches. Leaf extension and unfolding were delayed in LUE compared with BBR beeches, but not the time point of bud break. All plant tissues of BBR trees contained higher total P concentrations than those of LUE trees. Strong seasonal fluctuations for P in exudates of beech transport tissues, wood and bark, indicated higher P supply in BBR than in LUE plants, especially at the beginning of the growth phase until leaf maturity. Photosynthetic activity of LUE beeches was lower than that of BBR beeches due to stomatal limitations as the result of anatomically smaller stomatal pore widths, but not as the result of acute biochemical limitation of photosynthesis. Our results suggest that developmental retardation and lower photosynthesis under low P availability may be adaptation mechanisms that adjust the acquisition and recycling of P resources to seasonal growth demand."],["dc.identifier.doi","10.1002/jpln.201500539"],["dc.identifier.gro","3147816"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/5146"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.relation.issn","1436-8730"],["dc.title","Phenology, photosynthesis, and phosphorus in European beech (Fagus sylvatica L.) in two forest soils with contrasting P contents"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","879"],["dc.bibliographiccitation.issue","9"],["dc.bibliographiccitation.journal","Functional Plant Biology"],["dc.bibliographiccitation.lastpage","889"],["dc.bibliographiccitation.volume","37"],["dc.contributor.author","Winkler, Jana B."],["dc.contributor.author","Dannenmann, Michael"],["dc.contributor.author","Simon, Judy"],["dc.contributor.author","Pena, Rodica"],["dc.contributor.author","Offermann, Christine"],["dc.contributor.author","Sternad, Wolfgang"],["dc.contributor.author","Clemenz, Christian"],["dc.contributor.author","Naumann, Pascale Sarah"],["dc.contributor.author","Gasche, Rainer"],["dc.contributor.author","Kögel-Knabner, Ingrid"],["dc.contributor.author","Gessler, Arthur"],["dc.contributor.author","Rennenberg, Heinz"],["dc.contributor.author","Polle, Andrea"],["dc.date.accessioned","2017-09-07T11:50:45Z"],["dc.date.available","2017-09-07T11:50:45Z"],["dc.date.issued","2010"],["dc.description.abstract","The goal of this work was to increase the understanding of factors regulating nitrogen (N) competition between roots and soil microbes. For this purpose, root assimilate supply was diminished or abolished in beech (Fagus sylvatica L.) seedlings by girdling, drought stress or a combination of both factors. This was revealed by 13C tracer abundance in root tips after 13CO2 pulse labelling of the shoots. Analysis of different root tip fractions revealed that only 6% were ectomycorrhizal. Carbon (C) allocation to ectomycorrhizal and vital non-mycorrhizal root tips was ~26% higher than to distorted root tips. Drought resulted in ~30% increased ammonium (NH4+) and amino acid concentrations in roots and ~65% increased soil NH4+ concentrations, probably because of lower consumption of NH4+ by free-living microorganisms. Root uptake of glutamine of 13 nmol g–1 fresh mass h–1 decreased 2-fold with drought, although the number of vital root tips did not decrease. Carbon content in biomass of free-living microbes increased with glucose application regardless of drought, resulting in significant depletion in soil nitrate (NO3–), root NH4+ and amino acid concentrations. Our results suggest that the root–soil system of young beech trees was C-limited, and this prevented amino acid metabolism in roots and microbial NO3– consumption in the soil, thereby exerting feedback inhibition on uptake of inorganic N by roots. We suggest that rhizodeposition is a key link in regulating the plant–microbial N balance."],["dc.identifier.doi","10.1071/fp09309"],["dc.identifier.gro","3147814"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/5143"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.relation.issn","1445-4408"],["dc.title","Carbon and nitrogen balance in beech roots under competitive pressure of soil-borne microorganisms induced by girdling, drought and glucose application"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","657"],["dc.bibliographiccitation.issue","1-2"],["dc.bibliographiccitation.journal","Plant and Soil"],["dc.bibliographiccitation.lastpage","668"],["dc.bibliographiccitation.volume","369"],["dc.contributor.author","Guo, Chanjuan"],["dc.contributor.author","Simon, Judy"],["dc.contributor.author","Gasche, Rainer"],["dc.contributor.author","Naumann, Pascale Sarah"],["dc.contributor.author","Bimüller, Carolin"],["dc.contributor.author","Pena, Rodica"],["dc.contributor.author","Polle, Andrea"],["dc.contributor.author","Kögel-Knabner, Ingrid"],["dc.contributor.author","Zeller, Bernd"],["dc.contributor.author","Rennenberg, Heinz"],["dc.contributor.author","Dannenmann, Michael"],["dc.date.accessioned","2017-09-07T11:49:20Z"],["dc.date.available","2017-09-07T11:49:20Z"],["dc.date.issued","2013"],["dc.description.abstract","Aims Our aims were to characterize the fate of leaf-litter-derived nitrogen in the plant-soil-microbe system of a temperate beech forest of Southern Germany and to identify its importance for N nutrition of beech seedlings. Methods 15N-labelled leaf litter was traced in situ into abiotic and biotic N pools in mineral soil as well as into beech seedlings and mycorrhizal root tips over three growing seasons. Results There was a rapid transfer of 15N into the mineral soil already 21 days after tracer application with soil microbial biomass initially representing the dominant litter-N sink. However, 15N recovery in non-extractable soil N pools strongly increased over time and subsequently became the dominant 15N sink. Recovery in plant biomass accounted for only 0.025 % of 15N excess after 876 days. After three growing seasons, 15N excess recovery was characterized by the following sequence: non-extractable soil N >> extractable soil N including microbial biomass >> plant biomass > ectomycorrhizal root tips. Conclusions After quick vertical dislocation and cycling through microbial N pools, there was a rapid stabilization of leaf-litter-derived N in non-extractable N pools of the mineral soil. Very low 15N recovery in beech seedlings suggests a high importance of other N sources such as root litter for N nutrition of beech understorey."],["dc.identifier.doi","10.1007/s11104-013-1603-6"],["dc.identifier.gro","3147263"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/4889"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.relation.issn","0032-079X"],["dc.title","Minor contribution of leaf litter to N nutrition of beech (Fagus sylvatica) seedlings in a mountainous beech forest of Southern Germany"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1200"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","New Phytologist"],["dc.bibliographiccitation.lastpage","1210"],["dc.bibliographiccitation.volume","220"],["dc.contributor.author","Köhler, Julia"],["dc.contributor.author","Yang, Nan"],["dc.contributor.author","Pena, Rodica"],["dc.contributor.author","Raghavan, Venket"],["dc.contributor.author","Polle, Andrea"],["dc.contributor.author","Meier, Ina C."],["dc.date.accessioned","2020-12-10T18:36:15Z"],["dc.date.available","2020-12-10T18:36:15Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1111/nph.15208"],["dc.identifier.issn","0028-646X"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/76565"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Ectomycorrhizal fungal diversity increases phosphorus uptake efficiency of European beech"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","5"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Forest Ecosystems"],["dc.bibliographiccitation.volume","8"],["dc.contributor.author","Simons, Nadja K."],["dc.contributor.author","Felipe-Lucia, María R."],["dc.contributor.author","Schall, Peter"],["dc.contributor.author","Ammer, Christian"],["dc.contributor.author","Bauhus, Jürgen"],["dc.contributor.author","Blüthgen, Nico"],["dc.contributor.author","Boch, Steffen"],["dc.contributor.author","Buscot, François"],["dc.contributor.author","Fischer, Markus"],["dc.contributor.author","Goldmann, Kezia"],["dc.contributor.author","Gossner, Martin M."],["dc.contributor.author","Hänsel, Falk"],["dc.contributor.author","Jung, Kirsten"],["dc.contributor.author","Manning, Peter"],["dc.contributor.author","Nauss, Thomas"],["dc.contributor.author","Oelmann, Yvonne"],["dc.contributor.author","Pena, Rodica"],["dc.contributor.author","Polle, Andrea"],["dc.contributor.author","Renner, Swen C."],["dc.contributor.author","Schloter, Michael"],["dc.contributor.author","Schöning, Ingo"],["dc.contributor.author","Schulze, Ernst-Detlef"],["dc.contributor.author","Solly, Emily F."],["dc.contributor.author","Sorkau, Elisabeth"],["dc.contributor.author","Stempfhuber, Barbara"],["dc.contributor.author","Wubet, Tesfaye"],["dc.contributor.author","Müller, Jörg"],["dc.contributor.author","Seibold, Sebastian"],["dc.contributor.author","Weisser, Wolfgang W."],["dc.date.accessioned","2021-04-14T08:29:56Z"],["dc.date.available","2021-04-14T08:29:56Z"],["dc.date.issued","2021"],["dc.date.updated","2022-07-29T12:18:47Z"],["dc.description.abstract","Abstract\r\n \r\n Background\r\n Forests perform various important ecosystem functions that contribute to ecosystem services. In many parts of the world, forest management has shifted from a focus on timber production to multi-purpose forestry, combining timber production with the supply of other forest ecosystem services. However, it is unclear which forest types provide which ecosystem services and to what extent forests primarily managed for timber already supply multiple ecosystem services. Based on a comprehensive dataset collected across 150 forest plots in three regions differing in management intensity and species composition, we develop models to predict the potential supply of 13 ecosystem services. We use those models to assess the level of multifunctionality of managed forests at the national level using national forest inventory data.\r\n \r\n \r\n Results\r\n Looking at the potential supply of ecosystem services, we found trade-offs (e.g. between both bark beetle control or dung decomposition and both productivity or soil carbon stocks) as well as synergies (e.g. for temperature regulation, carbon storage and culturally interesting plants) across the 53 most dominant forest types in Germany. No single forest type provided all ecosystem services equally. Some ecosystem services showed comparable levels across forest types (e.g. decomposition or richness of saprotrophs), while others varied strongly, depending on forest structural attributes (e.g. phosphorous availability or cover of edible plants) or tree species composition (e.g. potential nitrification activity). Variability in potential supply of ecosystem services was only to a lesser extent driven by environmental conditions. However, the geographic variation in ecosystem function supply across Germany was closely linked with the distribution of main tree species.\r\n \r\n \r\n Conclusions\r\n Our results show that forest multifunctionality is limited to subsets of ecosystem services. The importance of tree species composition highlights that a lack of multifunctionality at the stand level can be compensated by managing forests at the landscape level, when stands of complementary forest types are combined. These results imply that multi-purpose forestry should be based on a variety of forest types requiring coordinated planning across larger spatial scales."],["dc.identifier.citation","Forest Ecosystems. 2021 Jan 27;8(1):5"],["dc.identifier.doi","10.1186/s40663-021-00280-5"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/17724"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/83038"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.notes.intern","Merged from goescholar"],["dc.publisher","Springer Singapore"],["dc.relation.eissn","2197-5620"],["dc.relation.orgunit","Zentrum für Biodiversität und Nachhaltige Landnutzung"],["dc.rights","CC BY 4.0"],["dc.rights.holder","The Author(s)"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0/"],["dc.subject","Ecosystem processes and services"],["dc.subject","Forest management"],["dc.subject","Structural diversity"],["dc.subject","Tree species composition"],["dc.subject","Trade-offs and synergies"],["dc.subject","Forest productivity"],["dc.title","National Forest Inventories capture the multifunctionality of managed forests in Germany"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","Frontiers in Plant Science"],["dc.bibliographiccitation.volume","11"],["dc.contributor.author","Edy, Nur"],["dc.contributor.author","Yelianti, Upik"],["dc.contributor.author","Irawan, Bambang"],["dc.contributor.author","Polle, Andrea"],["dc.contributor.author","Pena, Rodica"],["dc.date.accessioned","2020-12-10T18:46:48Z"],["dc.date.available","2020-12-10T18:46:48Z"],["dc.date.issued","2020"],["dc.description.abstract","Conversion of lowland tropical rainforests to intensely fertilized agricultural land-use systems such as oil palm (Elaeis guineensis) plantations leads to changes in nitrogen (N) cycling. Although soil microbial-driven N dynamics has been largely studied, the role of the plant as a major component in N uptake has rarely been considered. We address this gap by comparing the root N contents and uptake in lowland rainforests with that in oil palm plantations on Sumatra, Indonesia. To this aim, we applied 15N-labeled ammonium to intact soil, measured the 15N recovery in soil and roots, and calculated the root relative N uptake efficiency for 10 days after label application. We found that root N contents were by one third higher in the rainforest than oil palm plantations. However, 15N uptake efficiency was similar in the two systems. This finding suggests that lower N contents in oil palm roots were likely caused by plant internal utilization of the absorbed N (e.g., N export to fruit bunches) than by lower ability to take up N from the soil. 15N recovery in roots was primarily driven by the amount of root biomass, which was higher in oil palm plantation than rainforest. The oil palms unveiled a high capacity to acquire N, offering the possibility of enhancing sustainable plantation management by reducing N fertilizer application."],["dc.identifier.doi","10.3389/fpls.2020.00092"],["dc.identifier.eissn","1664-462X"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/17390"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/78554"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.relation","SFB 990: Ökologische und sozioökonomische Funktionen tropischer Tieflandregenwald-Transformationssysteme (Sumatra, Indonesien)"],["dc.relation","SFB 990 | B | B07: Functional diversity of mycorrhizal fungi along a tropical land-use gradient"],["dc.rights","CC BY 4.0"],["dc.subject.gro","sfb990_journalarticles"],["dc.title","Differences in Root Nitrogen Uptake Between Tropical Lowland Rainforests and Oil Palm Plantations"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1215"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Trees"],["dc.bibliographiccitation.lastpage","1225"],["dc.bibliographiccitation.volume","31"],["dc.contributor.author","Nguyen, Quynh Ngoc"],["dc.contributor.author","Polle, Andrea"],["dc.contributor.author","Pena, Rodica"],["dc.date.accessioned","2020-12-10T14:10:40Z"],["dc.date.available","2020-12-10T14:10:40Z"],["dc.date.issued","2017"],["dc.identifier.doi","10.1007/s00468-017-1539-1"],["dc.identifier.eissn","1432-2285"],["dc.identifier.issn","0931-1890"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/70837"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Intraspecific variations in drought response and fitness traits of beech (Fagus sylvatica L.) seedlings from three provenances differing in annual precipitation"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","85"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Mycorrhiza"],["dc.bibliographiccitation.lastpage","96"],["dc.bibliographiccitation.volume","29"],["dc.contributor.author","Yang, Nan"],["dc.contributor.author","Butenschoen, Olaf"],["dc.contributor.author","Rana, Rumana"],["dc.contributor.author","Köhler, Lars"],["dc.contributor.author","Hertel, Dietrich"],["dc.contributor.author","Leuschner, Christoph"],["dc.contributor.author","Scheu, Stefan"],["dc.contributor.author","Polle, Andrea"],["dc.contributor.author","Pena, Rodica"],["dc.date.accessioned","2020-12-10T14:10:49Z"],["dc.date.available","2020-12-10T14:10:49Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1007/s00572-018-0876-2"],["dc.identifier.eissn","1432-1890"],["dc.identifier.issn","0940-6360"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/70891"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.relation.orgunit","Zentrum für Biodiversität und Nachhaltige Landnutzung"],["dc.title","Leaf litter species identity influences biochemical composition of ectomycorrhizal fungi"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1622"],["dc.bibliographiccitation.issue","8"],["dc.bibliographiccitation.journal","Soil Biology and Biochemistry"],["dc.bibliographiccitation.lastpage","1631"],["dc.bibliographiccitation.volume","41"],["dc.contributor.author","Dannenmann, Michael"],["dc.contributor.author","Simon, Judy"],["dc.contributor.author","Gasche, Rainer"],["dc.contributor.author","Holst, Jutta"],["dc.contributor.author","Naumann, Pascale Sarah"],["dc.contributor.author","Kögel-Knabner, Ingrid"],["dc.contributor.author","Knicker, Heike"],["dc.contributor.author","Mayer, Helmut"],["dc.contributor.author","Schloter, Michael"],["dc.contributor.author","Pena, Rodica"],["dc.contributor.author","Polle, Andrea"],["dc.contributor.author","Rennenberg, Heinz"],["dc.contributor.author","Papen, Hans"],["dc.date.accessioned","2017-09-07T11:49:15Z"],["dc.date.available","2017-09-07T11:49:15Z"],["dc.date.issued","2009"],["dc.description.abstract","Nitrogen (N) cycling in terrestrial ecosystems is complex since it involves the closely interwoven processes of both N uptake by plants and microbial turnover of a variety of N metabolites. Major interactions between plants and microorganisms involve competition for the same N species, provision of plant nutrients by microorganisms and labile carbon (C) supply to microorganisms by plants via root exudation. Despite these close links between microbial N metabolism and plant N uptake, only a few studies have tried to overcome isolated views of plant N acquisition or microbial N fluxes. In this study we studied competitive patterns of N fluxes in a mountainous beech forest ecosystem between both plants and microorganisms by reducing rhizodeposition by tree girdling. Besides labile C and N pools in soil, we investigated total microbial biomass in soil, microbial N turnover (N mineralization, nitrification, denitrification, microbial immobilization) as well as microbial community structure using denitrifiers and mycorrhizal fungi as model organisms for important functional groups. Furthermore, plant uptake of organic and inorganic N and N metabolite profiles in roots were determined. Surprisingly plants preferred organic N over inorganic N and nitrate (NO3−) over ammonium (NH4+) in all treatments. Microbial N turnover and microbial biomass were in general negatively correlated to plant N acquisition and plant N pools, thus indicating strong competition for N between plants and free living microorganisms. The abundance of the dominant mycorrhizal fungi Cenococcum geophilum was negatively correlated to total soil microbial biomass but positively correlated to glutamine uptake by beech and amino acid concentration in fine roots indicating a significant role of this mycorrhizal fungus in the acquisition of organic N by beech. Tree girdling in general resulted in a decrease of dissolved organic carbon and total microbial biomass in soil while the abundance of C. geophilum remained unaffected, and N uptake by plants was increased. Overall, the girdling-induced decline of rhizodeposition altered the competitive balance of N partitioning in favour of beech and its most abundant mycorrhizal symbiont and at the expense of heterotrophic N turnover by free living microorganisms in soil. Similar to tree girdling, drought periods followed by intensive drying/rewetting events seemed to have favoured N acquisition by plants at the expense of free living microorganisms."],["dc.identifier.doi","10.1016/j.soilbio.2009.04.024"],["dc.identifier.gro","3147229"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/4861"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.relation.issn","0038-0717"],["dc.title","Tree girdling provides insight on the role of labile carbon in nitrogen partitioning between soil microorganisms and adult European beech"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]