Productivity of a semi-desert steppe was determined at the Dzhanybek Research Station in Kazakhstan, between 1955 and 1989. A long time series of peak live biomass measurements are available from 1955 to 1989 (excluding 1976). More detailed data on the seasonal dynamics of above ground live biomass and dead matter are available for 1985-1989. These data are part of a series of grassland data sets ... recently assembled and checked by Dr. Tagir Gilmanov, which cover a wide range of climate and "continentality" (increasing maximum summer temperatures, decreasing precipitation) from the North-West to the South-East of the Commonwealth of Independent States (former USSR). 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.