Scientists investigating the effect of exotic plant species on native plant biodiversity on the island of Mahe in the Seychelles have found that ecosystem restoration by removal of exotic plant species is linked to an increase number of pollinating species such as bees, butterflies and birds and an increase in flowering of native flora.
Eight study sites on Mahe’s mountains were monitored for a period of eight months, with non-native plant species being removed from four sites. Native plant species were found to be flowering more frequently and attracting more pollinators. An increase in the number of pollinator species was also observed 6-12 months after the removal of exotic species, including bees, wasps, flies, beetles, moths, birds and lizards.
The research from Mahe mountaintops gives us a clear demonstration of the role of ecosystem restoration in pollination and interaction between plants and animals, and that ecosystem degradation is, at least partially, a reversible process.
Picture credit: C. KAISER-BUNBURY