Steude, Karin

[["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"]]

[["dc.bibliographiccitation.firstpage","281"],["dc.bibliographiccitation.lastpage","283"],["dc.bibliographiccitation.seriesnr","14"],["dc.contributor.author","Wrage, N."],["dc.contributor.author","Ebenau, A."],["dc.contributor.author","Jarzmink, A."],["dc.contributor.author","Steude, K."],["dc.contributor.author","Peter, K."],["dc.contributor.author","Thies, C."],["dc.contributor.author","Isselstein, J."],["dc.contributor.editor","Nedělník, Jan"],["dc.contributor.editor","Macháč, Radek"],["dc.contributor.editor","Cagaš, Bohumír"],["dc.date.accessioned","2017-09-07T11:51:51Z"],["dc.date.available","2017-09-07T11:51:51Z"],["dc.date.issued","2009"],["dc.description.abstract","Plant diversity in grassland may lead to increased water-use efficiency as a result of complementary use of the rooting zone. An indicator of the water-use efficiency of C3 plants is their natural abundance of the carbon isotope. When enough water is available, the plants can keep their stomata open, enabling them to use a large pool of carbon dioxide. Thus, they can fractionate more against the heavier 13C, leading to a depletion of the plant material. When less water is available, they need to use more 13C because of the smaller C pool available with the shorter opening times of the stomata. This causes an enrichment of the plant material. We have used this principle to investigate the water-use efficiency of grassland differing in diversity. Sods of grassland with or without forbs were cut and incubated in pots with normal water application or experimental drought. Differences between water treatments were clearly visible in 13C values. However, there were no differences between differently diverse swards. This was probably due to the cutting of the sods, which destroyed deep roots."],["dc.identifier.gro","3148071"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/5416"],["dc.language.iso","en"],["dc.notes.status","fcwi"],["dc.notes.submitter","chake"],["dc.publisher","EGF"],["dc.relation.conference","15th European Grassland Federation Symposium"],["dc.relation.crisseries","Grassland Science in Europe"],["dc.relation.eventend","2009-09-09"],["dc.relation.eventlocation","Brno, Czech Republic"],["dc.relation.eventstart","2009-09-07"],["dc.relation.isbn","978-80-86908-15-1"],["dc.relation.ispartof","Alternative Functions of Grassland. Proceedings of the 15th European Grassland Federation Symposium. Brno, Czech Republic. 7–9 September 2009"],["dc.relation.ispartofseries","Grassland Science in Europe; 14"],["dc.title","Water-use efficiency of grassland differing in diversity"],["dc.type","conference_paper"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]