Productivity of a humid grass savanna was determined at the Lamto Research Station, Cote Ivoire, operated in collaboration with CNRS (Centre Nationale de Recherche Scientifique) - Ecole Normale Superieure, Paris, France. Measurement of monthly dynamics of above-ground plant matter (live biomass and dead matter for some years, total biomass in other years), and total roots (live + dead), were monitored from 1969 to 1987. Net primary production has been estimated for both above and below-ground, although more data is available on the former. Climate data for this site are also available: see Any Other Relevant Information in section 11 of this document. More information on the entire Net Primary Production Project can be found at the NPP homepage.