This study sought to investigate the relationships between climate trends and tree reproductive cycles at the National Floristic Center of Abidjan over a period of more than thirty years. Climate trends were analyzed and reveal major increases in rainfall; more frequent extreme events; à decline in maximum temperature, which is a direct contradiction to the global records observed; and tree phenological rhythms. Monitoring of eleven tree species demonstrated continuous fruiting the greatest being in December for thirteen individuals, flowering at peak in February for five individuals belonging to three different species, and exhibiting different adaptations to new environmental conditions. The results indicated a high level of synchronization between the biological cycles of trees and climatic parameters. In this respect, the biological rhythms were particularly more sensitive to temperatures between January and May and the triggering of reproductive phases was more tied to rainfall. Overall mixes of responses were shown by the species, by climate trends and by climate variables.

Chimpanzees communities depend highly on plant resources availability and the stability of their habitats. To characterize the territories of chimpanzees living in Taï National Park, this study aimed to analyze species diversity and structural parameters of these habitats. Rectangular transect of 93 ha were established in three chimpanzee territories. On each transect, trees with dbh ≥ 10 cm were identified, measured, and counted. Two hundred sixty four (264) plant species belonging to 180 genera and 52 botanical families were recorded in the three territories. The most important families are Ebenaceae, Fabaceae, and Malvaceae. The dominant plant species are Diospyros mannii, Calpocalyx brevibracteatus, and Coula edulis. The chimpanzees feed on the leaves and fruits of these three species. The studied territories present a density (486.5 individuals/ha) and a basal area (30.88 m2/ha) similar to those of most of tropical forests. Vegetation structure reveals that those habitats are stable with high regeneration capacity. By contributing to a best knowledge of chimpanzees’ habitats, this study establishes a scientific base for their communities monitoring in the Taï National Park.