Phytodiversity of agroforestry systems with coffee trees and degree of Loranthaceae infestation in the department of Daloa (Central-West, Côte d'Ivoire)

Abstract

The floristic condition of the agroforestry systems established on coffee trees in Daloa, in the Central-West of the Côte d'Ivoire has been carried out. Surface surveys and itinerant surveys identified 123 species, 93 genera and 37 families. Euphorbiaceae and Moraceae are the most represented families. The study made it possible to count 52.03% of the species of the Guinean-Congolese region, 27.65% of the transition species (GC-SZ), 11.3% of the indeterminate species, 5.69% of the endemic species West African and 2.44% of the GCI block species. The degree of infestation of plant species evaluated shows that the values vary from 8.33% at Alchornea cordifolia to 79.17% in Spondias mombin. The results also indicated a significant difference between the degrees of infestation of plant species according to the DBH, the age of the coffee plantations. The rate of infestation of plant species is 33.35±9.84% and the intensity of infestation is 2.83±0.60 tufts/plant. The analysis of the degree of infestation among others of Albizia zygia, Cecropia peltata, Cola nitida, Persea americana, and Spondias mombin has made it possible to identify major problems of Loranthaceae infestation sources posed by the presence of these species in coffee plantations.