From April to September 1994, macrofauna density, total biomass, and species diversity of earthworms were measured across a range of land use types in the Cabuyal River watershed. The methodology recommended by the Tropical Soil Biology and Fertility (TSBF) Program was used. Macrofauna density, biomass, and diversity of earthworm species varied considerably across land use types, and depths. Initial factor analysis yielded three factors that accounted for 71.8% of the total variance in macrofauna density.

Las estrategias para prevenir la degradación y el

abandono en la región amazónica serán, por tanto,

fundamentales para la conservación de ambas regiones.

Ante este panorama existen tres grandes estrategias

complementarias posibles para la región: (i) la

conservación de los recursos; (ii) la restauración de áreas

degradadas; y (iii) el diseño e implementación de usos de

la tierra de manera eco-eficiente.

El CIAT ha trabajado en la región amazónica por más de

30 años, contribuyendo al desarrollo de sistemas

The socioeconomic area of HarvestPlus LAC seeks to generate information to guide the decision related to biofortified crops in the region. The idea of this seminar is to present advances made in three socioeconomic studies: a. Potential departments/regions for an intervention with biofortified crops (cassava, rice, beans and maize) in Colombia; b. Adoption, consumption and commercialization of improved rice varieties in Bolivia and c. Preliminary results of a consumer acceptance of a High Iron Bean variety (Super Chiva) in Guatemala.

The Amazon Basin, home to approximately half of the world’s tropical forests and a quarter of global biodiversity, has experienced alarming rates of deforestation, land degradation, and loss of ecosystem services since the 1960s. These processes have largely been driven by unsustainable, low-productivity agriculture, which has left a legacy of persistent rural poverty and over 30 million hectares of abandoned or severely degraded land.