 In these areas, African forest buffalo depend on the grass that is able to develop as a result of the areas that have been previously clear-cut.In some areas park management staff burn off the savannas on a regular basis to keep the rainforest from growing onto the savannas and changing the ecosystem of the area.Large home ranges can be associated with less-productive habitats; however, a larger area of open grassland has been observed to have a positive relationship with herd size.