Cumulative above-ground net primary production was estimated for each year. These data are part of a series of a series of grassland data sets recently assembled and checked by Dr. Tagir Gilmanov. This kind of steppe was once widespread around the Black Sea Lowlands, and is typically mowed annually. Four years of above-ground biomass, dead matter and litter data are available for each growing season as well as a winter season data point for December each year. There is also a single value of peak biomass from July 1948.
More detailed information is available in the associated guide document .