Dynamisme de la structure diamétrique du peuplement ligneux des différents biotopes de la forêt classée de Yapo-Abbé, sud de la Côte d’Ivoire.

Abstract

Konan et al. J. Appl. Biosci. 2015 Dynamisme de la structure diamétrique du peuplement ligneux des différents biotopes de la forêt classée de Yapo-Abbé, Sud de la Côte d'Ivoire.Dynamism of the diametric structure of ligneous of the different habitats of the reserved forest of Yapo-Abbe, Southern Côte d'Ivoire ABSTRACT Objective : The study was conducted in the reserved forest of Yapo Abbé, to assess the disturbance of woody flora, following human activities, through the spatial distribution of tree species and the potential for natural regeneration in different habitats constituent of this forest (natural forests, managed forest, reforested areas, fallow) Journal of Applied Biosciences 94:8869 -8879 ISSN 1997-5902 Konan et al. J. Appl. Biosci. 2015 Dynamisme de la structure diamétrique du peuplement ligneux des différents biotopes de la forêt classée de Yapo-Abbé, Sud de la Côte d'Ivoire. 8870Methodology and results : The methodology focused on surface inventory. Thus, 50 records of 100 m x 50 m were arranged and inventoried through the various biotopes. The results showed that illegal logging and agricultural practice in the forest led to a significant change in the number of woody species of a biotope to another: 195 species in the natural forest, 155 in the managed forest, 117 for the reforested area and 86 in fallow. The high average diameter in the reserved forests is 24.7 ± 0.2 cm. It is only found in the natural forest habitat. The disruption of this forest has led to a strong natural regeneration, 74.6% more than in all biotopes. It has, however, not observed with commercial species. The most abundant species of the adult vegetation of natural forest habitats, forest fallows fitted and are replaced by other species in juvenile vegetation. Conclusion and application of results : The study showed that the uncontrolled exploitation of the woody flora in the reserved forest of Yapo Abbé is, for her, a real threat to the sustainable management of its natural resources and its biodiversity. This investigation should be carried out in other reserved forests of Côte d'Ivoire for the sustainable management of their natural resources.

Forest activities drive diversity and structure in the tropical rainforest

“…The higher number of species in the unlogged stand can be explained by the absence of anthropogenic activity and the lowest number of species in logged stand could be due to the intervention of forestry operations that consist to remove commercials species by SEFECCAM/SIENCAM company. Ours results confirms those obtained by Konan et al (2015) in Yapo‐Abbé classified forest, in the southern part of Ivory Coast. These authors have proven that, species richness of natural forest is higher than those of disturbed forest.…”

Characterization of the Woody Vegetation of Savannah Ecosystems of Mayo-Danay Division in the Sudano-Sahelian Zone of Cameroon

“…This scarcity of large-diameter species is explained by a disturbance in savannah ecosystems due to the overexploitation of woody species by humans. These results agree with those conducted in Yappo-Abbe forest classified, South Ivory Coast [52].…”

Influence of Watering Solution and Phenotype on the Growth of <i>in Vitro</i> Propagated Pineapple (Smooth Cayenne Cultivar) Plantlets during Acclimatization

“…This justified the virtual absence of roots on these plantlets at the end of the acclimatization process. This work can be justified with the work of Konan et al, [32] on oil palm that showed a good quality of the roots produced in vitro contributes to the success of the acclimatization process. Moreover, Fki et al, [33] reported in their works on palm tree that the plantlets that have difficulty for adaptation to natural conditions were those characterized by a poor junction between the root and the aerial part.…”