Wick, Barbara

[["dc.bibliographiccitation.firstpage","175"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Biogeosciences"],["dc.bibliographiccitation.lastpage","187"],["dc.bibliographiccitation.volume","2"],["dc.contributor.author","Wick, Barbara"],["dc.contributor.author","Veldkamp, Edzo"],["dc.contributor.author","Mello, W. Z. de"],["dc.contributor.author","Keller, M."],["dc.contributor.author","Crill, P."],["dc.date.accessioned","2017-09-07T11:54:55Z"],["dc.date.available","2017-09-07T11:54:55Z"],["dc.date.issued","2005"],["dc.description.abstract","We studied nitrous oxide (N2O) fluxes and soil nitrogen (N) cycling following forest conversion to pasture in the central Amazon near Santarém, Parö, Brazil. Two undisturbed forest sites and 27 pasture sites of 0.5 to 60 years were sampled once each during wet and dry seasons. In addition to soil-atmosphere fluxes of N2O we measured 27 soil chemical, soil microbiological and soil physical variables. Soil N2O fluxes were higher in the wet season than in the dry season. Fluxes of N2O from forest soils always exceeded fluxes from pasture soils and showed no consistent trend with pasture age. At our forest sites, nitrate was the dominant form of inorganic N both during wet and dry season. At our pasture sites nitrate generally dominated the inorganic N pools during the wet season and ammonium dominated during the dry season. Net mineralization and nitrification rates displayed large variations. During the dry season net immobilization of N was observed in some pastures. Compared to forest sites, young pasture sites (=2 years) had low microbial biomass N and protease activities. Protease activity and microbial biomass N peaked in pastures of intermediate age (4 to 8 years) followed by consistently lower values in older pasture (10 to 60 years). The C/N ratio of litter was low at the forest sites (~25) and rapidly increased with pasture age reaching values of 60-70 at pastures of 15 years and older. Nitrous oxide emissions at our sites were controlled by C and N availability and soil aeration. Fluxes of N2O were negatively correlated to leaf litter C/N ratio, NH4+-N and the ratio of NO3--N to the sum of NO3--N + NH4+-N (indicators of N availability), and methane fluxes and bulk density (indicators of soil aeration status) during the wet season. During the dry season fluxes of N2O were positively correlated to microbial biomass N, ß-glucosidase activity, total inorganic N stocks and NH4+-N. In our study region, pastures of all age emitted less N2O than old-growth forests, because of a progressive decline in N availability with pasture age combined with strongly anaerobic conditions in some pastures during the wet season."],["dc.format.mimetype","application/pdf"],["dc.identifier.doi","10.5194/bg-2-175-2005"],["dc.identifier.fs","31887"],["dc.identifier.gro","3150148"],["dc.identifier.ppn","571568653"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/4418"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6880"],["dc.language.iso","en"],["dc.notes.intern","Migrated from goescholar"],["dc.notes.status","zu prüfen"],["dc.relation.issn","1726-4189"],["dc.rights","Goescholar"],["dc.rights.access","openAccess"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject.ddc","577"],["dc.title","Nitrous oxide fluxes and nitrogen cycling along a pasture chronosequence in Central Amazonia, Brazil"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","20150275"],["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.issue","1694"],["dc.bibliographiccitation.journal","Philosophical Transactions of the Royal Society B: Biological Sciences"],["dc.bibliographiccitation.lastpage","8"],["dc.bibliographiccitation.volume","371"],["dc.contributor.author","Drescher, Jochen"],["dc.contributor.author","Rembold, Katja"],["dc.contributor.author","Allen, Kara"],["dc.contributor.author","Beckschäfer, Philip"],["dc.contributor.author","Buchori, Damayanti"],["dc.contributor.author","Clough, Yann"],["dc.contributor.author","Faust, Heiko"],["dc.contributor.author","Fauzi, Anas M."],["dc.contributor.author","Gunawan, Dodo"],["dc.contributor.author","Hertel, Dietrich"],["dc.contributor.author","Irawan, Bambang"],["dc.contributor.author","Jaya, I. Nengah Surati"],["dc.contributor.author","Klarner, Bernhard"],["dc.contributor.author","Kleinn, Christoph"],["dc.contributor.author","Knohl, Alexander"],["dc.contributor.author","Kotowska, Martyna M."],["dc.contributor.author","Krashevska, Valentyna"],["dc.contributor.author","Krishna, Vijesh V."],["dc.contributor.author","Leuschner, Christoph"],["dc.contributor.author","Lorenz, Wolfram"],["dc.contributor.author","Meijide, Ana"],["dc.contributor.author","Melati, Dian Nuraini"],["dc.contributor.author","Nomura, Miki"],["dc.contributor.author","Pérez-Cruzado, César"],["dc.contributor.author","Qaim, Matin"],["dc.contributor.author","Siregar, Iskandar Z."],["dc.contributor.author","Steinebach, Stefanie"],["dc.contributor.author","Tjoa, Aiyen"],["dc.contributor.author","Tscharntke, Teja"],["dc.contributor.author","Wick, Barbara"],["dc.contributor.author","Wiegand, Kerstin"],["dc.contributor.author","Kreft, Holger"],["dc.contributor.author","Scheu, Stefan"],["dc.date.accessioned","2017-08-25T10:13:33Z"],["dc.date.available","2017-08-25T10:13:33Z"],["dc.date.issued","2016"],["dc.description.abstract","Tropical lowland rainforests are increasingly threatened by the expansion of agriculture and the extraction of natural resources. In Jambi Province, Indonesia, the interdisciplinary EFForTS project focuses on the ecological and socio-economic dimensions of rainforest conversion to jungle rubber agroforests and monoculture plantations of rubber and oil palm. Our data confirm that rainforest transformation and land use intensification lead to substantial losses in biodiversity and related ecosystem functions, such as decreased above- and below-ground carbon stocks. Owing to rapid step-wise transformation from forests to agroforests to monoculture plantations and renewal of each plantation type every few decades, the converted land use systems are continuously dynamic, thus hampering the adaptation of animal and plant communities. On the other hand, agricultural rainforest transformation systems provide increased income and access to education, especially for migrant smallholders. Jungle rubber and rubber monocultures are associated with higher financial land productivity but lower financial labour productivity compared to oil palm, which influences crop choice: smallholders that are labour-scarce would prefer oil palm while land-scarce smallholders would prefer rubber. Collecting long-term data in an interdisciplinary context enables us to provide decision-makers and stakeholders with scientific insights to facilitate the reconciliation between economic interests and ecological sustainability in tropical agricultural landscapes."],["dc.identifier.doi","10.1098/rstb.2015.0275"],["dc.identifier.fs","619787"],["dc.identifier.gro","3150104"],["dc.identifier.pmid","27114577"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14226"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6835"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.relation","SFB 990: Ökologische und sozioökonomische Funktionen tropischer Tieflandregenwald-Transformationssysteme (Sumatra, Indonesien)"],["dc.relation","SFB 990 | A | A03: Untersuchung von Land-Atmosphäre Austauschprozesse in Landnutzungsänderungs-Systemen"],["dc.relation","SFB 990 | B | B04: Pflanzenproduktivität und Ressourcenaufteilung im Wurzelraum entlang von Gradienten tropischer Landnutzungsintensität und Baumartenvielfalt"],["dc.relation","SFB 990 | B | B05: Land use patterns in Jambi - quantification of structure, heterogeneity and changes of vegetation and land use as a basis for the explanation of ecological and socioeconomic functions"],["dc.relation","SFB 990 | B | B08: Struktur und Funktion des Zersetzersystems in Transformationssystemen von Tiefland-Regenwäldern"],["dc.relation","SFB 990 | B | B09: Oberirdische Biodiversitätsmuster und Prozesse in Regenwaldtransformations-Landschaften"],["dc.relation","SFB 990 | B | B10: Landschaftsbezogene Bewertung der ökologischen und sozioökonomischen Funktionen von Regenwald- Transformationssystemen in Sumatra (Indonesien)"],["dc.relation","SFB 990 | C | C07: Einflussfaktoren von Landnutzungswandel und sozioökonomische Auswirkungen für ländliche Haushalte"],["dc.relation","SFB 990 | Z | Z02: Central Scientific Support Unit"],["dc.relation.issn","0962-8436"],["dc.relation.orgunit","Abteilung Ökosystemmodellierung"],["dc.relation.orgunit","Department für Agrarökonomie und Rurale Entwicklung"],["dc.relation.orgunit","Abteilung Bioklimatologie"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0/"],["dc.subject.gro","sfb990_journalarticles"],["dc.title","Ecological and socio-economic functions across tropical land use systems after rainforest conversion"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]