The Abundance and pollinators' impact on seed setting of Leucaena leucocephala in Wazo Hill restored Quarry, Tanzania
Several studies have showed that, restoration has potential to increase the diversity of pollinators thus impacting on the seed setting of the plants. This study aimed at determining the abundance of Leucaena leucocephala and impact of high pollinators diversity on seed setting of Leucaena leucocephala in restored sites. The number of plants was counted in the quadrats for both restored and unrestored areas. The seeds for 130 pods collected, were counted with equal number of pods from restored and unrestored areas. The abundance of seeds in the two sites was not statistically different (P>0.05) while the higher vigor and number of seeds were observed in the restored area (p<0.05) Nutrients, sunlight and spacing were suggested to impact the vigor of the plants while pollinators' differences in the two sites led to dissimilarity in the seed setting of the plants. From this study it is evident that, ecosystem restoration in mined areas has positive impact on biodiversity in general and Leucaena leucocephala in particular. Key words: Abundance, Leucaena leucocephala, Pollinators, Seed setting, Wazo hill, Restored quarry