Introduction. Chapter 0.

Part I. Organic status of agroecosystems of a West African savanna: the plot SCALES

Chapter 1. Carbon, nitrogen & phosphorus allocation in agro-ecosystems of a West African savanna - I. The plant component under semi-permanent cultivation

Chapter 2. Carbon, nitrogen & phosphorus allocation in agro-ecosystems of a West African savanna - II. The soil component under semi-permanent cultivation

Chapter 3. Carbon, nitrogen & phosphorus allocation in agro-ecosystems of a West African savanna - III. The plant and soil components under continuous cultivation

Part II. Organic status of agroecosystems of a West African savanna: the village territory scale

Chapter 4. Carbon, nitrogen and phosphorus spatialized budget of a village territory of the West African savanna - I. The stocks.

Chapter 5. Carbon, nitrogen & phosphorus spatialized budget of a village territory of the West African savanna - II. The fluxes.

Chapter 6. General discussion and conclusion

References
Abbreviations
Table of tables
Table of figures

Appendices