Forest is a dynamic place where changes occur continuously and these changes bring about differentrnstructural changes in the forest stand. Change in the recruitment and forest community depends on therndynamics and formation of canopy gaps. Canopy gaps and their dynamics in regeneration wererninvestigated in Gera Forest of Jimma Zone Oromia Regional State, located western of Ethiopia at anrnaltitude range of 1600 2400 meter above sea level. In the Forest the main types of natural disturbancernoccurred through uprooting of trees and broken branch or crown. These causes are directly related withrnnatural causes like thunder and wind. Prunus africana was found to be most affected in the disturbance,rnforming six gaps in the Forest. Including Prunus africana 13 species were found to be gap formers. Thernmean DBH of the gap formers is 48.33 cm2 and mean of the gaps formed became I 90. 83. Twenty eightrnspecies were investigated as gap filler species in the Forest. Among the gap fWers Millettia ferruginearnwas found to be in more gap areas than other species. Croton macrostachyus was the most dominantrnspecies that occurred in higher number (i.e. I I 8 individual/hectare) in the gap areas. The negativerncorrelation between species density and gap area shows that both factors have low effect on gaprnregeneration and recruitment in Gera Forest. The replacement probability in the Forest is weak exceptrnMillettia ferruginea, Syzygium guineense and Prunus africana, all the rest of the gap formers arernreplaced by other nongapforming species. Dominant species in the Forest were not found being replacedrnby their own seedlings or saplings and among the ten woody dominant species only seven had sapling andrnfive had seedling stages.