Tonn, Bettina

[["dc.bibliographiccitation.firstpage","271"],["dc.bibliographiccitation.lastpage","276"],["dc.bibliographiccitation.seriesnr","6"],["dc.contributor.author","Tonn, B."],["dc.contributor.author","Porath, I."],["dc.contributor.author","Isselstein, J."],["dc.contributor.editorcorporation","Bayerische Landesanstalt für Landwirtschaft"],["dc.date.accessioned","2018-12-17T14:51:43Z"],["dc.date.available","2018-12-17T14:51:43Z"],["dc.date.issued","2013"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/57122"],["dc.language.iso","de"],["dc.notes.status","fcwi"],["dc.publisher","Bayerische Landesanstalt für Landwirtschaft"],["dc.publisher.place","Freising-Weihenstephan"],["dc.relation.conference","57. Jahrestagung der Arbeitsgemeinschaft für Grünland und Futterbau der Gesellschaft für Pflanzenbauwissenschaften e.V."],["dc.relation.crisseries","Schriftenreihe der Bayerischen Landesanstalt für Landwirtschaft"],["dc.relation.eventend","2013-08-31"],["dc.relation.eventlocation","Triesdorf (Franken)"],["dc.relation.eventstart","2013-08-29"],["dc.relation.ispartof","Mehr Eiweiß vom Grünland und Feldfutterbau. Potenziale, Chancen und Risiken. 57. Jahrestagung der AGGF"],["dc.relation.ispartofseries","Schriftenreihe der Bayerischen Landesanstalt für Landwirtschaft; 6"],["dc.title","Einfluss von Rinderurin auf die Isotopensignatur einer Lolium-perenne-Trifolium-repens-Mischung"],["dc.type","conference_paper"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","107802"],["dc.bibliographiccitation.journal","Field Crops Research"],["dc.bibliographiccitation.volume","252"],["dc.contributor.author","Heshmati, Sara"],["dc.contributor.author","Tonn, Bettina"],["dc.contributor.author","Isselstein, Johannes"],["dc.date.accessioned","2020-12-10T14:24:03Z"],["dc.date.available","2020-12-10T14:24:03Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1016/j.fcr.2020.107802"],["dc.identifier.issn","0378-4290"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/72115"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.relation.orgunit","Zentrum für Biodiversität und Nachhaltige Landnutzung"],["dc.title","White clover population effects on the productivity and yield stability of mixtures with perennial ryegrass and chicory"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","97"],["dc.bibliographiccitation.lastpage","99"],["dc.contributor.author","Scheile, T."],["dc.contributor.author","Isselstein, J."],["dc.contributor.author","Tonn, B."],["dc.contributor.editorcorporation","ASTA"],["dc.contributor.editorcorporation","Lycée Technique Agricole"],["dc.contributor.editorcorporation","CONVIS"],["dc.date.accessioned","2017-09-07T11:51:22Z"],["dc.date.available","2017-09-07T11:51:22Z"],["dc.date.issued","2016"],["dc.identifier.gro","3147984"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/5323"],["dc.language.iso","de"],["dc.notes.status","fcwi"],["dc.notes.submitter","chake"],["dc.publisher","Arbeitsgemeinschaft Grünland und Futterbau der Gesellschaft für Pflanzenbauwissenschaften e. V."],["dc.relation.conference","60. Jahrestagung der AGGF"],["dc.relation.eventend","2016-08-27"],["dc.relation.eventlocation","Luxemburg"],["dc.relation.eventstart","2016-08-25"],["dc.relation.isbn","978-99959-990-0-1"],["dc.relation.ispartof","Nachhaltige Milchproduktion: Forschung und Praxis im Dialog"],["dc.title","Einfluss von Exkrementstellen auf die Biomasseproduktivität sowie die Selektivität von Weidetieren bei extensiver Beweidung"],["dc.type","conference_paper"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","913"],["dc.bibliographiccitation.seriesnr","23"],["dc.contributor.author","Tonn, B."],["dc.contributor.author","Hüppe, C."],["dc.contributor.author","Kunze, N."],["dc.contributor.author","Noll, C."],["dc.contributor.author","Raab, C."],["dc.contributor.author","Isselstein, J."],["dc.contributor.editor","Horan, B."],["dc.contributor.editor","Hennessy, D."],["dc.contributor.editor","O’Donovan, M."],["dc.contributor.editor","Kennedy, E."],["dc.contributor.editor","McCarthy, B."],["dc.contributor.editor","Finn, J. A."],["dc.contributor.editor","O’Brien, B."],["dc.date.accessioned","2018-12-03T13:43:34Z"],["dc.date.available","2018-12-03T13:43:34Z"],["dc.date.issued","2018"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/57017"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.publisher","EGF"],["dc.publisher.place","Ireland"],["dc.relation.conference","27th General Meeting of the European Grassland Federation"],["dc.relation.crisseries","Grassland Science in Europe"],["dc.relation.eventend","2018-06-21"],["dc.relation.eventlocation","Cork, Ireland"],["dc.relation.eventstart","2018-06-17"],["dc.relation.isbn","978-1-84170-643-6"],["dc.relation.isbn","978-1-84170-644-3"],["dc.relation.ispartof","Sustainable meat and milk production from grasslands"],["dc.relation.ispartofseries","Grassland Science in Europe;23"],["dc.title","Nutrient transfer by cattle through different spatial patterns of grazing and non-grazing behaviour"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","277"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Nutrient Cycling in Agroecosystems"],["dc.bibliographiccitation.lastpage","289"],["dc.bibliographiccitation.volume","112"],["dc.contributor.author","Scheile, Thorsten"],["dc.contributor.author","Isselstein, Johannes"],["dc.contributor.author","Tonn, Bettina"],["dc.date.accessioned","2018-12-03T10:21:24Z"],["dc.date.available","2018-12-03T10:21:24Z"],["dc.date.issued","2018"],["dc.description.abstract","In low-input grazing systems excrement patches are the main nutrient input. They influence both forage production and intake of grazing animals. Our goals were to determine (1) whether seasons of differing weather conditions and swards of differing botanical composition influence the excrement effect on plant biomass in grazed pasture and (2) if animal species differ in their forage intake at excrement patches. We measured the plant biomass and forage intake responses to dung and urine patches of cattle and sheep in rotationally grazed low-input pastures with either grass-dominated or diverse swards in the stocking periods following excrement deposition in spring and autumn. At urine plots the plant biomass production was 14.7% higher than at the corresponding control plots, accompanied by a 19 and 17% higher biomass nitrogen and potassium concentration, respectively. The effect of excrements on plant biomass production, nutrient parameters and animal forage intake was not affected by animal species, sward type or stocking period. Small-scale sward height measurements showed that cattle avoided vegetation close to dung patches in both stocking periods whereas sheep did so only following the excrement deposition in spring and that cattle preferentially grazed at urine plots on grass-dominated swards. The effect of excrement patches on vegetation biomass parameters was small, which masked potential influences by animal species, sward type and excrement deposition time."],["dc.identifier.doi","10.1007/s10705-018-9945-3"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/57006"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.orgunit","Zentrum für Biodiversität und Nachhaltige Landnutzung"],["dc.title","Herbage biomass and uptake under low-input grazing as affected by cattle and sheep excrement patches"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","653"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","European Journal of Remote Sensing"],["dc.bibliographiccitation.lastpage","666"],["dc.bibliographiccitation.volume","52"],["dc.contributor.author","Raab, Christoph"],["dc.contributor.author","Tonn, B."],["dc.contributor.author","Meißner, M."],["dc.contributor.author","Balkenhol, Niko"],["dc.contributor.author","Isselstein, Johannes"],["dc.date.accessioned","2020-12-10T18:15:34Z"],["dc.date.available","2020-12-10T18:15:34Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1080/22797254.2019.1701560"],["dc.identifier.eissn","2279-7254"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/17033"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/74888"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.notes.intern","Merged from goescholar"],["dc.relation.orgunit","Abteilung Wildtierwissenschaften"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","Multi-temporal RapidEye Tasselled Cap data for land cover classification"],["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","588"],["dc.bibliographiccitation.lastpage","590"],["dc.bibliographiccitation.seriesnr","21"],["dc.contributor.author","Ebeling, D."],["dc.contributor.author","Tonn, B."],["dc.contributor.author","Isselstein, J."],["dc.contributor.editor","Höglind, M."],["dc.contributor.editor","Bakken, A. K."],["dc.contributor.editor","Hovstad, K. A."],["dc.contributor.editor","Kallioniemi, E."],["dc.contributor.editor","Riley, H."],["dc.contributor.editor","Steinshamn, H."],["dc.contributor.editor","Østrem, L."],["dc.date.accessioned","2017-09-07T11:51:47Z"],["dc.date.available","2017-09-07T11:51:47Z"],["dc.date.issued","2016"],["dc.description.abstract","In extensive grazing systems selective grazing creates stable mosaic structures consisting of frequently grazed, short patches and rarely grazed, tall patches. The stocking rate determines the share of different patch types on a pasture. In the present experiment biomass production of different patch types (‘short’, ’medium’, ‘tall’) and biomass production of paddocks treated with different stocking rates (‘moderate’, ‘lenient’, ‘very lenient’ – 6, 12, 18 cm target sward height) were analysed. The experiment was conducted on a long-term low-intensity set-stocked cattle pasture. We focused on total annual aboveground net primary productivity (ANPP) and on the temporal distribution of ANPP. We hypothesized that short patches are more productive and biomass growth is distributed more homogeneously throughout the season than in tall patches. Furthermore we assumed that paddocks grazed moderately are more productive and biomass growth is distributed more homogeneously than in more leniently grazed paddocks. The results showed that tall patches were not less productive than short patches, which led to similar ANPP of paddocks. ANPP of short patches and moderately grazed paddocks was distributed most homogeneously throughout the season."],["dc.identifier.gro","3148048"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/5391"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.publisher","EGF"],["dc.publisher.place","Norway"],["dc.relation.conference","26th General Meeting of the European Grassland Federation"],["dc.relation.crisseries","Grassland Science in Europe"],["dc.relation.eventend","2016-09-08"],["dc.relation.eventlocation","Trondheim, Norway"],["dc.relation.eventstart","2016-09-04"],["dc.relation.isbn","978-82-17-01677-9"],["dc.relation.ispartof","The multiple roles of grassland in the European bioeconomy"],["dc.relation.ispartofseries","Grassland Science in Europe; 21"],["dc.title","Patch-dependent herbage growth drives paddock productivity in a long-term extensive grazing system"],["dc.type","conference_paper"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1311"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","Journal of Applied Ecology"],["dc.bibliographiccitation.lastpage","1321"],["dc.bibliographiccitation.volume","56"],["dc.contributor.author","Riesch, Friederike"],["dc.contributor.author","Tonn, Bettina"],["dc.contributor.author","Meißner, Marcus"],["dc.contributor.author","Balkenhol, Niko"],["dc.contributor.author","Isselstein, Johannes"],["dc.date.accessioned","2019-07-31T07:48:10Z"],["dc.date.available","2019-07-31T07:48:10Z"],["dc.date.issued","2019"],["dc.description.abstract","Maintaining semi‐natural open habitats requires biomass removal, which can be achieved by extensive grazing with livestock species. However, implementing this established conservation management strategy in large or access‐restricted areas is often not possible. We investigated grazing by wild and free‐ranging red deer Cervus elaphus as an alternative conservation management approach on an active military training area in Germany. In grasslands and heathlands protected under the EU Habitats Directive, we quantified aboveground net primary productivity, forage quality and forage removal by red deer over three successive years. To assess synergistic effects between wildlife grazing and additional grassland management measures removing vegetation biomass (i.e. burning, mowing), we conducted our grazing experiment in burnt, mown and untreated grasslands. Annual forage removal by red deer amounted to 35%, 44%, 48% and 59% of the aboveground net primary productivity in burnt, mown and untreated grasslands and untreated heathlands, respectively. Theoretically, a similar annual biomass removal could be obtained by livestock grazing with 0.54 animal units ha−1 in grasslands and 0.45 animal units ha−1 in heathlands. In grasslands, daily rates of forage removal peaked in spring and early summer, whereas in heathlands, forage removal rates were only significant in winter. Forage removal rates in grasslands increased with productivity and forage quality, which were both enhanced in mown grasslands. This suggests mowing can increase grassland attractiveness to red deer. Forage removal rates in heathlands did not relate to productivity or forage quality but to standing biomass. Synthesis and applications. We demonstrate that the quantity of forage removed by wild red deer can be comparable to that of livestock in common conservation grazing systems. The seasonal patterns of forage removal by red deer in grasslands and heathlands coincided with the different grazing requirements of these habitats. Especially in large areas of conservation interest, we therefore encourage attempts to modify current wildlife management strategies to allow red deer to forage in open landscapes, which can contribute to the conservation of semi‐natural open habitats and also help to reduce damage in forest stands. This article is protected by copyright. All rights reserved."],["dc.identifier.doi","10.1111/1365-2664.13396"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/62226"],["dc.language.iso","en"],["dc.relation.issn","0021-8901"],["dc.relation.issn","1365-2664"],["dc.relation.orgunit","Zentrum für Biodiversität und Nachhaltige Landnutzung"],["dc.relation.orgunit","Abteilung Wildtierwissenschaften"],["dc.title","Grazing by wild red deer: Management options for the conservation of semi‐natural open habitats"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","901"],["dc.bibliographiccitation.lastpage","903"],["dc.bibliographiccitation.seriesnr","23"],["dc.contributor.author","Raab, C."],["dc.contributor.author","Riesch, F."],["dc.contributor.author","Tonn, B."],["dc.contributor.author","Meißner, M."],["dc.contributor.author","Balkenhol, N."],["dc.contributor.author","Isselstein, J."],["dc.contributor.editor","Horan, B."],["dc.contributor.editor","Hennessy, D."],["dc.contributor.editor","O’Donovan, M."],["dc.contributor.editor","Kennedy, E."],["dc.contributor.editor","McCarthy, B."],["dc.contributor.editor","Finn, J. A."],["dc.contributor.editor","O’Brien, B."],["dc.date.accessioned","2018-12-03T13:06:43Z"],["dc.date.available","2018-12-03T13:06:43Z"],["dc.date.issued","2018"],["dc.description.abstract","Spatially explicit mapping of grassland forage quality is of major interest for sustainable grazing management of NATURA 2000 areas, especially if those are large or have limited accessibility. Therefore, this study is concerned with the estimation of crude protein (CP) and organic acid detergent fiber (oADF) content at regional scale using Sentinel-2 and Landsat 8 remote sensing data. Field data were collected in the Grafenwoehr military training area in Bavaria, Germany. Different combinations of predictor variables were applied using cross-validated random forest regression, linear regression with lasso penalty and linear regression with ridge penalty models. The red-edge band of Sentinel-2, centered at 705 nm, as well as the shortwave infrared bands of both sensors and related vegetation indices contributed the most to the respective models. Linear regression with lasso penalty and Sentinel-2 data performed consistently better, compared to the other models. The results (CP (10.1 - 23.1%): max R2 0.53, RMSE 1.78%; oADF (22.7 - 39.5%): max R2 0.72, RMSE 2.3%) demonstrate the potential of remote sensing as an information tool in supporting the conservation management of grassland areas with limited access."],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/57015"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.publisher","EGF"],["dc.publisher.place","Ireland"],["dc.relation.conference","27th General Meeting of the European Grassland Federation"],["dc.relation.crisseries","Grassland Science in Europe"],["dc.relation.eventend","2018-06-21"],["dc.relation.eventlocation","Cork, Ireland"],["dc.relation.eventstart","2018-06-17"],["dc.relation.isbn","978-1-84170-643-6"],["dc.relation.isbn","978-1-84170-644-3"],["dc.relation.ispartof","Sustainable meat and milk production from grasslands"],["dc.relation.ispartofseries","Grassland Science in Europe;23"],["dc.relation.orgunit","Abteilung Wildtierwissenschaften"],["dc.title","Methods for spatially explicit estimation of NATURA 2000 grassland forage quality using satellites"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","112"],["dc.bibliographiccitation.journal","Livestock Science"],["dc.bibliographiccitation.lastpage","119"],["dc.bibliographiccitation.volume","214"],["dc.contributor.author","Becker, Talea"],["dc.contributor.author","Kayser, Manfred"],["dc.contributor.author","Tonn, Bettina"],["dc.contributor.author","Isselstein, Johannes"],["dc.date.accessioned","2018-11-29T12:51:32Z"],["dc.date.available","2018-11-29T12:51:32Z"],["dc.date.issued","2018"],["dc.description.abstract","Dairy farming in Europe and in Germany in particular, is characterized by a growing trend towards all-year-housing. Along with that the proportion of grass products as sources of energy for dairy cows is decreasing. On the other hand, society and politics strongly advocate grazing resulting in the introduction of pasture-milk programs. Little is known of the dairy farmers\\’ perception of grazing and it is not clear what role their attitude towards grazing plays in their decision-making and how this is related to farm structure. To investigate these questions, we conducted a survey with face-to-face interviews on three types of German dairy farms: i.) grazing farms (n = 17), ii) exercise-pasture farms (n = 19), and iii) all-year-housing farms (n = 18). On grazing farms, pasture contributes significantly to the ration of the cows (0.2 ha grassland with 0.1 ha as pasture per cow and year; at least 6 hours of grazing on 120 days per year). Exercise-pasture farms offer their cows a much more restricted access to rather small pastures. All-year-housing farms have no grazing for dairy at all but feed their cows grass silage and hay. Farmers from grazing farms expressed a high agreement with the positive aspects of grazing (low fodder costs, low labor input, benefits for animal health and fertility), while the all-year-housing farmers were more aware of the challenges and disadvantages of grazing and expressed a high agreement with its potential negative aspects (reduced milk yield, unsuitability for large herds, insufficient access of the herd to the pastures). The exercise-pasture farmers appreciated the advantages of better fertility and better animal health and saw fewer disadvantages of grazing than the all-year-housing farmers. Utilization of grass products also differed among the three groups: grass and grass silage made up 47% of the ration on grazing farms while on exercise-pasture farms and on all-year-housing farms, grass products amounted to only 28% and 23% of the ration, respectively. The grazing farms had fewer cows (n = 69) and smaller milk yields (8,270 kg milk per cow/year) than the exercise-pasture farms (n = 109; 9,524 kg milk per cow/year) and all-year-housing farms (n = 138; 9,404 kg milk per cow/year). We also discuss the influence of the human tendency to avoid cognitive dissonance on farmers\\’ responses. We conclude that in developing concepts to promote grazing, the differing attitudes and perceptions of dairy farmers and the interaction with differing farm structures need to be considered."],["dc.identifier.doi","10.1016/j.livsci.2018.05.018"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/56999"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.orgunit","Zentrum für Biodiversität und Nachhaltige Landnutzung"],["dc.title","How German dairy farmers perceive advantages and disadvantages of grazing and how it relates to their milk production systems"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]