Graefe, Sophie

[["dc.bibliographiccitation.firstpage","269"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Biodiversity and Conservation"],["dc.bibliographiccitation.lastpage","300"],["dc.bibliographiccitation.volume","22"],["dc.contributor.author","Graefe, Sophie"],["dc.contributor.author","Dufour, Dominique"],["dc.contributor.author","van Zonneveld, Maarten"],["dc.contributor.author","Rodriguez, Fernando"],["dc.contributor.author","Gonzalez, Alonso"],["dc.date.accessioned","2018-11-07T09:28:44Z"],["dc.date.available","2018-11-07T09:28:44Z"],["dc.date.issued","2013"],["dc.description.abstract","Peach palm (Bactris gasipaes) is a multi-purpose palm tree native to tropical Latin America, which is predominantly cultivated by smallholders in agroforestry systems. The fruits are rich in starch and contribute importantly to food security and the cash income of farmers who cultivate them. Complex value chains have emerged that link producers to consumers, but irregular product quality and market chain inequalities undermine the economic well-being of producers and retailers. Peach palm is genetically diverse, but screening for traits of commercial and nutritional interest is required to enhance the use of its genetic resources. Alliances between public organizations and private enterprises are needed to realize the potential for processing novel products from peach palm, especially in the pharmaceutical and cosmetic sectors. The diverse challenges that emerge at different stages of production, processing and marketing require participatory research that directly involves stakeholders from the beginning."],["dc.identifier.doi","10.1007/s10531-012-0402-3"],["dc.identifier.isi","000313792200001"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/8837"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/30850"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","1572-9710"],["dc.relation.issn","0960-3115"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Peach palm (Bactris gasipaes) in tropical Latin America: implications for biodiversity conservation, natural resource management and human nutrition"],["dc.type","review"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","e0167949"],["dc.bibliographiccitation.issue","12"],["dc.bibliographiccitation.journal","PLoS ONE"],["dc.bibliographiccitation.volume","11"],["dc.contributor.author","Galtan, Lucia"],["dc.contributor.author","Laderach, Peter"],["dc.contributor.author","Graefe, Sophie"],["dc.contributor.author","Rao, Idupulapati"],["dc.contributor.author","van der Hoek, Rein"],["dc.date.accessioned","2018-11-07T10:04:21Z"],["dc.date.available","2018-11-07T10:04:21Z"],["dc.date.issued","2016"],["dc.description.abstract","Livestock systems in the tropics can contribute to mitigate climate change by reducing greenhouse gas (GHG) emissions and increasing carbon accumulation. We quantified C stocks and GHG emissions of 30 dual-purpose cattle farms in Nicaragua using farm inventories and lifecycle analysis. Trees in silvo-pastoral systems were the main C stock above-ground (16-24 Mg ha(-1)), compared with adjacent secondary forests (43 Mg C ha(-1)). We estimated that methane from enteric fermentation contributed 1.6 kg CO2-eq., and nitrous oxide from excreta 0.4 kg CO2-eq. per kg of milk produced. Seven farms that we classified as climate-smart agriculture (CSA) out of 16 farms had highest milk yields (6.2 kg cow(-1) day(-1)) and lowest emissions (1.7 kg CO2-eq. per kg milk produced). Livestock on these farms had higher-quality diets, especially during the dry season, and manure was managed better. Increasing the numbers of CSA farms and improving CSA technology will require better enabling policy and incentives such as payments for ecosystem services."],["dc.identifier.doi","10.1371/journal.pone.0167949"],["dc.identifier.isi","000391222000027"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14143"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/38681"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Public Library Science"],["dc.relation.issn","1932-6203"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0/"],["dc.title","Climate-Smart Livestock Systems: An Assessment of Carbon Stocks and GHG Emissions in Nicaragua"],["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.artnumber","945"],["dc.bibliographiccitation.journal","Frontiers in Plant Science"],["dc.bibliographiccitation.volume","9"],["dc.contributor.author","Butz, Philipp"],["dc.contributor.author","Hölscher, Dirk"],["dc.contributor.author","Cueva, Eduardo"],["dc.contributor.author","Graefe, Sophie"],["dc.date.accessioned","2019-07-09T11:45:42Z"],["dc.date.available","2019-07-09T11:45:42Z"],["dc.date.issued","2018"],["dc.description.abstract","Tropical dry forests are composed of tree species with different drought coping strategies and encompass heterogeneous site conditions. Actual water use will be controlled by soil moisture availability. In a premontane dry forest of southern Ecuador, tree water use patterns of four tree species of different phenologies were studied along an elevational gradient, in which soil moisture availability increases with altitude. Main interest was the influence of variation in soil moisture, vapor pressure deficit, species (representing phenology), elevation, and tree diameter on water use. Special emphasis was put on the stem succulent, deciduous Ceiba trichistandra, as high water use rates and drought coping involving stem succulence was to be expected. Tree water use rates increased linearly with diameter across species at high soil water content. However, when soil moisture declined, sap flux densities of the species responded differently. The stem succulent, deciduous Ceiba and other deciduous tree species reduced sap flux sensitively, whereas sap flux densities of the evergreen (broad leaved) Capparis scabrida were increasing. This was also reflected in diurnal hysteresis loops of sap flux vs. vapor pressure deficit (VPD) of the air. Under dry soil conditions, Ceiba and other deciduous tree species had much smaller areas in the hysteresis loop, whereas the area of Capparis was largely enhanced compared to wet conditions. The evergreen Capparis potentially had access to deeper soil water resources as water use patterns suggest that top soil drought was tolerated. The deciduous species followed a drought avoidance strategy by being leafless in the dry season. The stem succulent deciduous Ceiba flushed leaves at the end of the dry season before the rainy season began and also re-flushed early in the dry season after a rain event; however, water use rates at this occasion remained low. Ceiba was also ready for fast and strong response in water use when conditions were most favorable during the wet season. The study thus indicates a strong influence of species' drought coping strategy on water use patterns in tropical dry forests."],["dc.identifier.doi","10.3389/fpls.2018.00945"],["dc.identifier.pmid","30034407"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/15292"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/59292"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.publisher","Frontiers Media S.A."],["dc.relation.eissn","1664-462X"],["dc.relation.issn","1664-462X"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.subject.ddc","570"],["dc.title","Tree Water Use Patterns as Influenced by Phenology in a Dry Forest of Southern Ecuador"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","e0195777"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","PLOS ONE"],["dc.bibliographiccitation.volume","13"],["dc.contributor.author","Abdulai, Issaka"],["dc.contributor.author","Jassogne, Laurence"],["dc.contributor.author","Graefe, Sophie"],["dc.contributor.author","Asare, Richard"],["dc.contributor.author","Van Asten, Piet"],["dc.contributor.author","Läderach, Peter"],["dc.contributor.author","Vaast, Philippe"],["dc.date.accessioned","2019-07-09T11:45:38Z"],["dc.date.available","2019-07-09T11:45:38Z"],["dc.date.issued","2018"],["dc.description.abstract","Reduced climatic suitability due to climate change in cocoa growing regions of Ghana is expected in the coming decades. This threatens farmers' livelihood and the cocoa sector. Climate change adaptation requires an improved understanding of existing cocoa production systems and farmers' coping strategies. This study characterized current cocoa production, income diversification and shade tree management along a climate gradient within the cocoa belt of Ghana. The objectives were to 1) compare existing production and income diversification between dry, mid and wet climatic regions, and 2) identify shade trees in cocoa agroforestry systems and their distribution along the climatic gradient. Our results showed that current mean cocoa yield level of 288kg ha-1yr-1 in the dry region was significantly lower than in the mid and wet regions with mean yields of 712 and 849 kg ha-1 yr-1, respectively. In the dry region, farmers diversified their income sources with non-cocoa crops and off-farm activities while farmers at the mid and wet regions mainly depended on cocoa (over 80% of annual income). Two shade systems classified as medium and low shade cocoa agroforestry systems were identified across the studied regions. The medium shade system was more abundant in the dry region and associated to adaptation to marginal climatic conditions. The low shade system showed significantly higher yield in the wet region but no difference was observed between the mid and dry regions. This study highlights the need for optimum shade level recommendation to be climatic region specific."],["dc.identifier.doi","10.1371/journal.pone.0195777"],["dc.identifier.pmid","29659629"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/15269"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/59273"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.issn","1932-6203"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.subject.ddc","630"],["dc.subject.mesh","Agriculture"],["dc.subject.mesh","Cacao"],["dc.subject.mesh","Climate Change"],["dc.subject.mesh","Forestry"],["dc.subject.mesh","Geography"],["dc.subject.mesh","Ghana"],["dc.subject.mesh","Income"],["dc.title","Characterization of cocoa production, income diversification and shade tree management along a climate gradient in Ghana."],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","155"],["dc.bibliographiccitation.issue","1-2"],["dc.bibliographiccitation.journal","Plant and Soil"],["dc.bibliographiccitation.lastpage","166"],["dc.bibliographiccitation.volume","313"],["dc.contributor.author","Graefe, Sophie"],["dc.contributor.author","Hertel, Dietrich"],["dc.contributor.author","Leuschner, Christoph"],["dc.date.accessioned","2018-11-07T11:08:50Z"],["dc.date.available","2018-11-07T11:08:50Z"],["dc.date.issued","2008"],["dc.description.abstract","Fine root turnover plays an important role in the cycling of carbon and nutrients in ecosystems. Not much is known about fine root dynamics in tropical montane rainforests, which are characterized by steep temperature gradients over short distances. We applied the minirhizotron technique in five forest stands along an elevational transect between 1,050 and 3,060 m above sea level in a South Ecuadorian montane rainforest in order to test the influence of climate and soil parameters on fine root turnover. Turnover of roots with diameter < 2.0 mm was significantly higher in the lowermost and the uppermost stand (0.9 cm cm(-1) year(-1)) than in the three mid-elevation stands (0.6 cm cm(-1) year(-1)). Root turnover of finest roots (d < 0.5 mm) was higher compared to the root cohort with d < 2.0 mm, and exceeded 1.0 cm cm(-1) year(-1) at the lower and upper elevations of the transect. We propose that the non linear altitudinal trend of fine root turnover originates from an overlapping of a temperature effect with other environmental gradients (e.g. adverse soil conditions) in the upper part of the transect and that the fast replacement of fine roots is used as an adaptive mechanism by trees to cope with limiting environmental conditions."],["dc.description.sponsorship","German Science Foundation (DFG)"],["dc.identifier.doi","10.1007/s11104-008-9688-z"],["dc.identifier.isi","000260961600012"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?goescholar/3599"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/52879"],["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","Fine root dynamics along a 2,000-m elevation transect in South Ecuadorian mountain rainforests"],["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"]]