Hoeft, Ina

[["dc.bibliographiccitation.firstpage","193"],["dc.bibliographiccitation.issue","1-2"],["dc.bibliographiccitation.journal","Plant and Soil"],["dc.bibliographiccitation.lastpage","206"],["dc.bibliographiccitation.volume","364"],["dc.contributor.author","Keuter, Andreas"],["dc.contributor.author","Hoeft, Ina"],["dc.contributor.author","Veldkamp, Edzo"],["dc.contributor.author","Corre, Marife D."],["dc.date.accessioned","2017-09-07T11:43:38Z"],["dc.date.available","2017-09-07T11:43:38Z"],["dc.date.issued","2012"],["dc.identifier.doi","10.1007/s11104-012-1344-y"],["dc.identifier.gro","3150183"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/10367"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6919"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.relation.issn","0032-079X"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Nitrogen response efficiency of a managed and phytodiverse temperate grassland"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","207"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Basic and Applied Ecology"],["dc.bibliographiccitation.lastpage","218"],["dc.bibliographiccitation.volume","15"],["dc.contributor.author","Hoeft, Ina"],["dc.contributor.author","Keuter, Andreas"],["dc.contributor.author","Quiñones, Cecille M."],["dc.contributor.author","Schmidt-Walter, Paul"],["dc.contributor.author","Veldkamp, Edzo"],["dc.contributor.author","Corre, Marife D."],["dc.date.accessioned","2017-09-07T11:43:31Z"],["dc.date.available","2017-09-07T11:43:31Z"],["dc.date.issued","2014"],["dc.description.abstract","Maintaining nitrogen retention efficiency (NRE) is crucial in minimizing N losses when intensifying management of temperate grasslands. Our aim was to evaluate how grassland management practices and sward compositions affect NRE (1 − N losses/soil available N), defined as the efficiency with which soil available N is retained in an ecosystem. A three-factorial grassland management experiment was established with two fertilization treatments (without and combined N, phosphorus and potassium fertilization), two mowing frequencies (cut once and thrice per year) and three sward compositions (control, monocot- and dicot-enhanced swards). We measured N losses as leaching and nitrous oxide emissions, and soil available N as gross N mineralization rates. Fertilization increased N losses due to increased nitrification and decreased microbial N immobilization, and consequently decreased NRE. Intensive mowing partly dampened high N losses following fertilization. Sward compositions influenced NRE but not N losses: control swards that developed for decades under extensive management had the highest NRE, whereas monocot-enhanced sward had the lowest NRE. NRE was highly correlated with microbial NH4+ immobilization and microbial biomass and only marginally correlated with plant N uptake, underlining the importance of microbial N retention in the soil-plant system. Microbial N retention is reflected in NRE but not in indices commonly used to reflect plant response. NRE was able to capture the effects of sward composition and fertilization whereas N losses were only sensitive to fertilization; thus, NRE is a better index when evaluating environmental sustainability of sward compositions and management practices of grasslands."],["dc.identifier.doi","10.1016/j.baae.2014.04.001"],["dc.identifier.gro","3150166"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6901"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.issn","1439-1791"],["dc.subject","Nitrate leaching; Dissolved organic nitrogen; Nitrous oxide emissions; Gross N mineralization; Microbial immobilization; 15N pool dilution; Functional group diversity"],["dc.title","Nitrogen retention efficiency and nitrogen losses of a managed and phytodiverse temperate grassland"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","34"],["dc.bibliographiccitation.journal","Agriculture, Ecosystems & Environment"],["dc.bibliographiccitation.lastpage","43"],["dc.bibliographiccitation.volume","151"],["dc.contributor.author","Hoeft, Ina"],["dc.contributor.author","Steude, Karin"],["dc.contributor.author","Wrage, Nicole"],["dc.contributor.author","Veldkamp, Edzo"],["dc.date.accessioned","2017-09-07T11:54:54Z"],["dc.date.available","2017-09-07T11:54:54Z"],["dc.date.issued","2012"],["dc.description.abstract","Agriculture is an important source of the greenhouse gas nitrous oxide (N2O) and the atmospherically important nitric oxide (NO). We evaluated the effects of different grazers and plant species composition on N2O and NO emissions in temperate grassland. Paddocks were grazed rotationally by either cattle or sheep. Mean N2O emissions were 38.7 μg N2O-N m−2 h−1, mean NO emissions 2.4 μg NO-N m−2 h−1. Cumulative NO-N emissions were larger for sheep- than for cattle-grazed paddocks. Plant species composition was insignificant compared to the effect of grazers on N oxide emissions. In a controlled application experiment, plots with cattle excreta showed larger N2O emissions than plots with sheep excreta, reaching peak emissions of 1921 μg N2O-N m−2 h−1 on cattle urine patches compared to 556 μg N2O-N m−2 h−1 on sheep urine patches, related to different N-inputs per excretion. Peak emissions of dung-treated plots were much smaller. The N2O emission factors were 0.4% for cattle urine, 0.5% for sheep urine, 0.05% for cattle dung and 0.09% for sheep dung. N oxide emissions on the paddock scale were larger for sheep- compared to cattle-grazing, despite larger emissions per cattle excretion. We attributed this to the more even spread of sheep excreta compared to cattle excreta."],["dc.identifier.doi","10.1016/j.agee.2012.01.029"],["dc.identifier.gro","3150139"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6870"],["dc.language.iso","en"],["dc.notes.status","public"],["dc.relation.issn","0167-8809"],["dc.subject","Nitrous oxide; Nitric oxide; Trace gas fluxes; Emission factor; Dicots; Monocots"],["dc.title","Response of nitrogen oxide emissions to grazer species and plant species composition in temperate agricultural grassland"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]