Cocoa agroforestry is perceived as potential adaptation strategy to sub-optimal or adverse environmental conditions such as drought. We tested this strategy over wet, dry and extremely dry periods comparing cocoa in full sun with agroforestry systems: shaded by (i) a leguminous tree species, Albi...
Abdulai, I.
,
Vaast, Philippe
,
Hoffmann, M.P.
,
Asare, R.
,
Jassogne, Laurence T.P.
,
Asten, Piet J.A. van
,
Rotter, Reimund P.
,
Graefe, S.
,
[Cocoa agroforestry is less resilient to sub-optimal and extreme climate than cocoa in full sun]
,
Cocoa agroforestry is less resilient to sub-optimal and extreme climate than cocoa in full sun
Graefe, S.
,
Dufour, D.
,
Zonneveld, M. van
,
Rodríguez, F.
,
González, A.
,
[Peach palm (Bactris gasipaes) in tropical Latin America: implications for biodiversity conservation, natural resource management and human nutrition]
,
Peach palm (Bactris gasipaes) in tropical Latin America: implications for biodiversity conservation, natural resource management and human nutrition
Banana and cooking banana (Musa spp.) production systems accumulate a considerable quantity of discard due to high quality demands of markets. Ripe fruits have high sugar contents, which can be easily processed to ethanol. The present study aimed to quantitatively assess the production potential ...
Graefe, S.
,
Dufour, D.
,
Giraldo A.
,
Muñoz, L.A.
,
Mora P
,
Solís H
,
Garcés, H.
,
González, A.
,
[Energy and carbon footprints of ethanol production using banana and cooking banana discard: A case study from Costa Rica and Ecuador]
,
Energy and carbon footprints of ethanol production using banana and cooking banana discard: A case study from Costa Rica and Ecuador
Lowered temperatures may reduce the root water uptake of tropical trees at high elevations through several mechanisms; however, field studies to test their relevance are lacking. We measured sap flux density (J) in small-diameter tree roots across a 2000-m elevation transect in a tropical mountai...
Graefe, S.
,
Leuschner, C
,
Coners, H
,
Hertel, D
,
[Root functioning in tropical high-elevation forests: environmental vs biological control of root water absorption]
,
Root functioning in tropical high-elevation forests: environmental vs biological control of root water absorption
Carbon storage and sequestration in tropical mountain forests and their dependence on elevation and temperature are not well understood. In an altitudinal transect study in the South Ecuadorian Andes, we tested the hypotheses that (i) aboveground net primary production (ANPP) decreases continuous...
Moser, G
,
Leuschner, C
,
Hertel, D
,
Graefe, S.
,
Soethe, N
,
Iost, S
,
[Elevation effects on the carbon budget of tropical mountain forests (S Ecuador): The role of the belowground compartment]
,
Elevation effects on the carbon budget of tropical mountain forests (S Ecuador): The role of the belowground compartment
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 ...
Graefe, S.
,
Meyer-Sand, L.F.
,
Chauvette, K.
,
Abdulai, I.
,
Jassogne, Laurence T.P.
,
Vaast, Philippe
,
Asare, R.
,
[Evaluating farmers' knowledge of shade trees in different cocoa agro-ecological zones in Ghana]
,
Evaluating farmers' knowledge of shade trees in different cocoa agro-ecological zones in Ghana