Brumme, Rainer

[["dc.bibliographiccitation.firstpage","515"],["dc.bibliographiccitation.issue","1-2"],["dc.bibliographiccitation.journal","Plant and Soil"],["dc.bibliographiccitation.lastpage","529"],["dc.bibliographiccitation.volume","369"],["dc.contributor.author","Eickenscheidt, Nadine"],["dc.contributor.author","Brumme, Rainer"],["dc.date.accessioned","2018-11-07T09:22:06Z"],["dc.date.available","2018-11-07T09:22:06Z"],["dc.date.issued","2013"],["dc.description.abstract","Low gas diffusivity of the litter layer is held responsible for high seasonal nitrous oxide (N2O) and low nitric oxide (NO) emissions from acid beech forest soils with moder type humus. The objectives were (i) to evaluate whether these beech forest soils generally exhibit high seasonal N2O emissions and (ii) to assess the influence of gas diffusivity and nitrogen (N) mineralisation on N oxide fluxes. We measured N2O and NOx (NO + NO2) fluxes in six German beech stands and determined net N turnover rates and gas diffusivity of soil samples taken at each chamber. High N2O emissions (up to 113 mu g N m(-2) h(-1)) were only observed at one beech stand. Net nitrification of the organic layer and soil gas diffusivity explained 77 % of the variation in N2O fluxes (P = 0.001). Fluxes of NOx were low (-6.3 to 12.3 mu g N m(-2) h(-1)) and appeared to be controlled by NOx concentrations in the forest air. Low soil gas diffusivity and high N turnover rates promoted high N2O losses in times of high soil respiration but were not necessarily associated with moder type humus. High seasonal emissions are probably less common in German beech forests than previously assumed."],["dc.description.sponsorship","German Research Foundation [BR 1524/6]"],["dc.identifier.doi","10.1007/s11104-013-1602-7"],["dc.identifier.isi","000321642200039"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/10370"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/29262"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","0032-079X"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Regulation of N2O and NOx emission patterns in six acid temperate beech forest soils by soil gas diffusivity, N turnover, and atmospheric NOx concentrations"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","67"],["dc.bibliographiccitation.issue","1-2"],["dc.bibliographiccitation.journal","Plant and Soil"],["dc.bibliographiccitation.lastpage","77"],["dc.bibliographiccitation.volume","362"],["dc.contributor.author","Eickenscheidt, Nadine"],["dc.contributor.author","Brumme, Rainer"],["dc.date.accessioned","2018-11-07T09:30:50Z"],["dc.date.available","2018-11-07T09:30:50Z"],["dc.date.issued","2013"],["dc.description.abstract","Decomposition of leaf litterfall plays a major role for nitrogen (N) dynamics in soils. However, little is known as to which extent beech leaf litter contributes to N turnover and nitrous oxide (N2O) emissions within one decade after litterfall. In 1997, we exchanged recently fallen leaf litter by N-15-labelled litter in a beech stand (Fagus sylvatica) at the Solling, Germany. Measurements were conducted 2-3 and 10-11 years after litter exchange. Two years after litter exchange, 92 % of added N-15 was recovered in the surface 10 cm of the soil. The labelled N was primarily found in the upper part of the F layer of the moder type humus. Eleven years after litter exchange, 73 % of the added N-15 was lost and the remaining 27 % was mainly recovered in the lower part of the F layer indicating N sequestration. The remaining leaf litter N was subject to measurable N mineralisation (2-3 % of litter N) and N2O production (0.02 %). Between 0.3 % (eleventh year) and 0.6 % (second year) of total annual N2O emissions were attributed to beech leaf litter of a single year. Most of the annual N2O emissions (1.33-1.54 kg N ha(-1) yr(-1)) were probably derived from older soil N pools."],["dc.description.sponsorship","German Research Foundation [BR 1524/6]"],["dc.identifier.doi","10.1007/s11104-012-1245-0"],["dc.identifier.isi","000312729400006"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/8866"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/31405"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","0032-079X"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Contribution of N-15-labelled leaf litter to N turnover, nitrous oxide emissions and N sequestration in a beech forest during eleven years"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","51"],["dc.bibliographiccitation.journal","Atmospheric Environment"],["dc.bibliographiccitation.lastpage","58"],["dc.bibliographiccitation.volume","60"],["dc.contributor.author","Eickenscheidt, Nadine"],["dc.contributor.author","Brumme, Rainer"],["dc.date.accessioned","2018-11-07T09:03:06Z"],["dc.date.available","2018-11-07T09:03:06Z"],["dc.date.issued","2012"],["dc.description.abstract","European temperate forest soils have been exposed to elevated nitrogen (N) and acid depositions for decades. High nitrous oxide (N2O) and nitric oxide (NO) emissions have been reported from these forests. Since the 1980s, a decline in atmospheric deposition rates has been occurring. Our study addressed the question as to how N oxide fluxes and N turnover processes have changed in response to the declining N depositions in a N-enriched spruce stand (Picea abies (L.) Karst.). Studies were conducted at the Soiling roof site under a control-roof with ambient depositions and under a reduced-N-input-roof where N and acid depositions have been reduced to a pre-industrial level for 16-17 years. Open dynamic and closed chamber methods were used to determine NOx and N2O fluxes, respectively, and in situ incubation studies were conducted to measure net N mineralisation. Under the reduced deposition roof, net nitrification and nitrate in soil solution were reduced to undetectable levels causing the soil to change from a net source for NOx (0.62 +/- 0.24 kg N ha(-1) yr(-1)) into a net sink (-0.33 +/- 0.01 kg N ha(-1) yr(-1)). The uptake of NOx was exclusively controlled by the NOx concentrations of the forest air. Reversal of N enrichment did not affect annual N2O fluxes (0.08 kg N ha(-1) yr(-1)) due to restricted denitrification in the well-aerated organic layer, but the origin of nitrate for denitrification changed from mainly soil-borne N to exclusively deposited N. It was demonstrated that less than two decades of reduced N and acid depositions are sufficient to reduce the surplus N and NOx emissions of this soil. (c) 2012 Elsevier Ltd. All rights reserved."],["dc.description.sponsorship","German Research Foundation [BR 1524/6-1]"],["dc.identifier.doi","10.1016/j.atmosenv.2012.06.018"],["dc.identifier.isi","000309789800006"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/24832"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Pergamon-elsevier Science Ltd"],["dc.relation.issn","1352-2310"],["dc.title","NOx and N2O fluxes in a nitrogen-enriched European spruce forest soil under experimental long-term reduction of nitrogen depositions"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]