Graefe, Sophie

[["dc.bibliographiccitation.firstpage","273"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Global Change Biology"],["dc.bibliographiccitation.lastpage","286"],["dc.bibliographiccitation.volume","24"],["dc.contributor.author","Abdulai, Issaka"],["dc.contributor.author","Vaast, Philippe"],["dc.contributor.author","Hoffmann, Munir P."],["dc.contributor.author","Asare, Richard"],["dc.contributor.author","Jassogne, Laurence"],["dc.contributor.author","Van Asten, Piet"],["dc.contributor.author","Rötter, Reimund P."],["dc.contributor.author","Graefe, Sophie"],["dc.date.accessioned","2020-12-10T18:28:41Z"],["dc.date.available","2020-12-10T18:28:41Z"],["dc.date.issued","2017"],["dc.identifier.doi","10.1111/gcb.13885"],["dc.identifier.issn","1354-1013"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/76381"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Cocoa agroforestry is less resilient to sub-optimal and extreme climate than cocoa in full sun"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","106887"],["dc.bibliographiccitation.journal","Agriculture, Ecosystems & Environment"],["dc.bibliographiccitation.volume","295"],["dc.contributor.author","Sarmiento-Soler, Alejandra"],["dc.contributor.author","Vaast, Philippe"],["dc.contributor.author","Hoffmann, Munir P."],["dc.contributor.author","Jassogne, Laurence"],["dc.contributor.author","van Asten, Piet"],["dc.contributor.author","Graefe, Sophie"],["dc.contributor.author","Rötter, Reimund P."],["dc.date.accessioned","2021-04-14T08:26:04Z"],["dc.date.available","2021-04-14T08:26:04Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1016/j.agee.2020.106887"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/81821"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.issn","0167-8809"],["dc.relation.orgunit","Zentrum für Biodiversität und Nachhaltige Landnutzung"],["dc.title","Effect of cropping system, shade cover and altitudinal gradient on coffee yield components at Mt. Elgon, Uganda"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","321"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Human Ecology"],["dc.bibliographiccitation.lastpage","332"],["dc.bibliographiccitation.volume","45"],["dc.contributor.author","Graefe, Sophie"],["dc.contributor.author","Meyer-Sand, Lennart Flavio"],["dc.contributor.author","Chauvette, Katja"],["dc.contributor.author","Abdulai, Issaka"],["dc.contributor.author","Jassogne, Laurence"],["dc.contributor.author","Vaast, Philippe"],["dc.contributor.author","Asare, Richard"],["dc.date.accessioned","2018-11-07T10:23:08Z"],["dc.date.available","2018-11-07T10:23:08Z"],["dc.date.issued","2017"],["dc.description.abstract","Shade trees are an integral part of most cocoa growing systems across the world. This study assesses farmers' local knowledge of shade trees at two locations in Ghana with different climatic conditions and vulnerability to climate change. Akumadan is located in the northern dry part of the cocoa belt representing marginal conditions for cocoa cultivation, whereas Asankragua is located in the southern wet part, more ecologically favorable for cocoa cultivation. Inventories were conducted to assess the abundance of species, their structural characteristics and benefits to cocoa systems. Results show that cocoa farmers have detailed knowledge on the functions of shade trees in cocoa systems and prefer species that provide specific needs according to the location. However, abundance of species in a location does not necessary translate into beneficial impacts on cocoa productivity. In the drier part of the cocoa belt, income diversification through shade trees is an adaptation strategy to the increasingly marginal conditions for cocoa production, which has led to the high proportion of fruit trees among the most abundant species. In contrast, farmers in the southern part of the cocoa belt select shade trees for their high cocoa compatibility. Adaptation strategies for cocoa farmers should therefore promote species that best accommodate farmers' economic, agronomic and environmental needs."],["dc.identifier.doi","10.1007/s10745-017-9899-0"],["dc.identifier.isi","000402700400003"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/42399"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","PUB_WoS_Import"],["dc.publisher","Springer"],["dc.relation.issn","1572-9915"],["dc.relation.issn","0300-7839"],["dc.title","Evaluating Farmers' Knowledge of Shade Trees in Different Cocoa Agro-Ecological Zones in Ghana"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","231"],["dc.bibliographiccitation.journal","Agricultural and Forest Meteorology"],["dc.bibliographiccitation.lastpage","242"],["dc.bibliographiccitation.volume","266-267"],["dc.contributor.author","Sarmiento-Soler, Alejandra"],["dc.contributor.author","Vaast, Philippe"],["dc.contributor.author","Hoffmann, Munir P."],["dc.contributor.author","Rötter, Reimund P."],["dc.contributor.author","Jassogne, Laurence"],["dc.contributor.author","van Asten, Piet J.A."],["dc.contributor.author","Graefe, Sophie"],["dc.date.accessioned","2020-12-10T14:22:16Z"],["dc.date.available","2020-12-10T14:22:16Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1016/j.agrformet.2018.12.006"],["dc.identifier.issn","0168-1923"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/71563"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.relation.orgunit","Zentrum für Biodiversität und Nachhaltige Landnutzung"],["dc.title","Water use of Coffea arabica in open versus shaded systems under smallholder’s farm conditions in Eastern Uganda"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","e733"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Global Change Biology"],["dc.bibliographiccitation.lastpage","e740"],["dc.bibliographiccitation.volume","24"],["dc.contributor.author","Abdulai, Issaka"],["dc.contributor.author","Vaast, Philippe"],["dc.contributor.author","Hoffmann, Munir P."],["dc.contributor.author","Asare, Richard"],["dc.contributor.author","Jassogne, Laurence"],["dc.contributor.author","Van Asten, Piet"],["dc.contributor.author","Rötter, Reimund P."],["dc.contributor.author","Graefe, Sophie"],["dc.date.accessioned","2018-02-12T10:41:33Z"],["dc.date.available","2018-02-12T10:41:33Z"],["dc.date.issued","2018"],["dc.description.abstract","Resilience of cocoa agroforestry vs. full sun under extreme climatic conditions. In the specific case of our study, the two shade tree species associated with cocoa resulted in strong competition for water and became a disadvantage to the cocoa plants contrary to expected positive effects."],["dc.identifier.doi","10.1111/gcb.14044"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/12147"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.title","Cocoa agroforestry is less resilient to sub-optimal and extreme climate than cocoa in full sun: Reply to Norgrove (2017)"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","102812"],["dc.bibliographiccitation.journal","Agricultural Systems"],["dc.bibliographiccitation.volume","181"],["dc.contributor.author","Abdulai, Issaka"],["dc.contributor.author","Hoffmann, Munir P."],["dc.contributor.author","Jassogne, Laurence"],["dc.contributor.author","Asare, Richard"],["dc.contributor.author","Graefe, Sophie"],["dc.contributor.author","Tao, Hsiao-Hang"],["dc.contributor.author","Muilerman, Sander"],["dc.contributor.author","Vaast, Philippe"],["dc.contributor.author","Van Asten, Piet"],["dc.contributor.author","Läderach, Peter"],["dc.contributor.author","Rötter, Reimund P."],["dc.date.accessioned","2020-12-10T14:22:19Z"],["dc.date.available","2020-12-10T14:22:19Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1016/j.agsy.2020.102812"],["dc.identifier.issn","0308-521X"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/71575"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.relation.orgunit","Zentrum für Biodiversität und Nachhaltige Landnutzung"],["dc.title","Variations in yield gaps of smallholder cocoa systems and the main determining factors along a climate gradient in Ghana"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","S0167880921004904"],["dc.bibliographiccitation.firstpage","107786"],["dc.bibliographiccitation.journal","Agriculture, Ecosystems & Environment"],["dc.bibliographiccitation.volume","326"],["dc.contributor.author","Sarmiento-Soler, Alejandra"],["dc.contributor.author","Rötter, Reimund P."],["dc.contributor.author","Hoffmann, Munir P."],["dc.contributor.author","Jassogne, Laurence"],["dc.contributor.author","van Asten, Piet"],["dc.contributor.author","Graefe, Sophie"],["dc.contributor.author","Vaast, Philippe"],["dc.date.accessioned","2022-06-01T09:40:09Z"],["dc.date.available","2022-06-01T09:40:09Z"],["dc.date.issued","2022"],["dc.identifier.doi","10.1016/j.agee.2021.107786"],["dc.identifier.pii","S0167880921004904"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/108644"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-572"],["dc.relation.issn","0167-8809"],["dc.rights.uri","https://www.elsevier.com/tdm/userlicense/1.0/"],["dc.title","Disentangling effects of altitude and shade cover on coffee fruit dynamics and vegetative growth in smallholder coffee systems"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["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"]]