Trade-offs among ecosystem services and productivity in coffee-based agroforestry systems in Nicaragua

Cerdan Carlos, Bucardo E.M., Cartier M., Soto Gabriela, Fallot Abigail, Rapidel Bruno. 2019. Trade-offs among ecosystem services and productivity in coffee-based agroforestry systems in Nicaragua. In : 4th World Congress on Agroforestry. Book of abstracts. Dupraz Christian (ed.), Gosme Marie (ed.), Lawson Gerry (ed.). CIRAD, INRA, World Agroforestry, Agropolis International, MUSE. Montpellier : CIRAD-INRA, Résumé, p. 613. World Congress on Agroforestry. 4, Montpellier, France, 20 Mai 2019/22 Mai 2019.

Résumé : Many studies have measured biodiversity loss across the coffee intensification gradient; some studies have shown, with contradictory results, the trade-offs between biodiversity loss and coffee production increments. Plot assessments of tree diversity, soil conservation, carbon sequestration and coffee production are lacking. We characterized the structure, productivity, diversity, soil conservation and carbon sequestration of 40 coffee agroforestry systems in two different areas in Northern Nicaragua. Coffee management, environmental conditions and soils properties were also characterized to better understand the trade-offs among services within the plots and their dependence on the local environment. These agroforestry systems were chosen to maximize contrasts in terms of biophysical context, botanical composition and management practices. Results (preliminary) showed significant differences in the vegetation structure that enabled us to identify main clusters: CAFS with dense and diverse overstorey canopy, CAFS with high Musa density and CAFS with low density of overstorey canopy. Changes in vegetation structure reflected differences in farmers' strategies but did not affect the overall coffee yield or the conservation of soils. Coffee yields had strong variations among the plots, and this was mainly related to the amount of fertilizer applied. Neither carbon sequestered, soil conserved nor tree diversity have a significant negative relationship with coffee productivity. However, coffee yields were low comparing with other coffee areas in the region. These results open new perspectives to improve coffee agroforestry systems' structural complexity and their relative ecosystem services without affecting their overall productivity. Further investigations and a more stratified sampling to get a good grasp of the whole range of variability (in highly productive areas with less shade canopy) are needed to fully understand the mechanisms involved in trade-offs.

Mots-clés Agrovoc : services écosystémiques, agroforesterie, agriculture durable, Coffea

Mots-clés géographiques Agrovoc : Nicaragua

Mots-clés libres : Agroforestry, Sustainability

Classification Agris : F08 - Systèmes et modes de culture
K10 - Production forestière
P01 - Conservation de la nature et ressources foncières

Auteurs et affiliations

• Cerdan Carlos, Universidad Veracruzana (MEX)
• Bucardo E.M., Bioversity International (NIC)
• Cartier M., ISTOM (FRA)
• Soto Gabriela
• Fallot Abigail, CIRAD-ES-UPR GREEN (FRA) ORCID: 0000-0002-7526-6917
• Rapidel Bruno, CIRAD-PERSYST-UPR Systèmes de pérennes (FRA) ORCID: 0000-0003-0288-5650

Source : Cirad-Agritrop (https://agritrop.cirad.fr/592953/)

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