[ Analyse floristique et phytogéographique de la végétation du littoral et sublittoral dans le Kouilou (République du Congo) ]
Volume 19, Issue 1, January 2017, Pages 206–217
Edmond Sylvestre Miabangana-1, Gilbert Nsongola2, Ben Orban3, Margaretha van Rooyen4, Noel Van Rooyen5, and Jérôme Gaugris6
1 Herbier National du Congo, Institut National de Recherche en Sciences Exactes and Naturelles (IRSEN) B.P. 2400-Brazzaville, Republic of the Congo
2 Herbier National du Congo, Institut National de Recherche en Sciences Exactes and Naturelles (IRSEN) B.P. 2400-Brazzaville, Republic of the Congo
3 FLORA FAUNA and MAN, Ecological Services Ltd., Tortola, British Virgin Islands
4 FLORA FAUNA and MAN, Ecological Services Ltd., Tortola, British Virgin Islands
5 FLORA FAUNA and MAN, Ecological Services Ltd., Tortola, British Virgin Islands
6 FLORA FAUNA and MAN, Ecological Services Ltd., Tortola, British Virgin Islands
Original language: French
Copyright © 2017 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The zone of study is located north of Pointe noire town, in the Department of Kouilou, in Republic of Congo. In order to better understand the floristic richness and chorology of the study site of interest, an analysis on a flora, of the autoecological and phytogeographycal spectra of species was undertaken. This analysis is based on the floristic material from different botanical surveys carried out in 2012, and deposited at the National Herbarium of the Congo (IEC). Over a study area of 202’700 ha investigated through 243 phytosociological plots, a matrix of 580 specific and subspecific taxa, distributed in 386 genus and 119 families, were inventoried. Seven species, of which one for the science, were new for the flora of Republic of Congo. The families of Fabaceae, Poaceae, Rubiaceae, Euphorbiaceae, of Malavaceae and Annonaceae and are the most diversified in species. The ecological spectrum highlights the strong preponderance of the phanerophytes, sarcochores and mesophiles, thereby confirming the dominance of the forest biodiversity compared to grasslands. From a phytogeographical perspective, the preponderance of the base element identified as well as three families and eleven genus of endemic nature integrate the flora within the Guineo-Congolian centre of endemism.
Author Keywords: Flora, autoecological and phytogeographical spectra, Kouilou, Republic of the Congo.
Volume 19, Issue 1, January 2017, Pages 206–217
Edmond Sylvestre Miabangana-1, Gilbert Nsongola2, Ben Orban3, Margaretha van Rooyen4, Noel Van Rooyen5, and Jérôme Gaugris6
1 Herbier National du Congo, Institut National de Recherche en Sciences Exactes and Naturelles (IRSEN) B.P. 2400-Brazzaville, Republic of the Congo
2 Herbier National du Congo, Institut National de Recherche en Sciences Exactes and Naturelles (IRSEN) B.P. 2400-Brazzaville, Republic of the Congo
3 FLORA FAUNA and MAN, Ecological Services Ltd., Tortola, British Virgin Islands
4 FLORA FAUNA and MAN, Ecological Services Ltd., Tortola, British Virgin Islands
5 FLORA FAUNA and MAN, Ecological Services Ltd., Tortola, British Virgin Islands
6 FLORA FAUNA and MAN, Ecological Services Ltd., Tortola, British Virgin Islands
Original language: French
Copyright © 2017 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
The zone of study is located north of Pointe noire town, in the Department of Kouilou, in Republic of Congo. In order to better understand the floristic richness and chorology of the study site of interest, an analysis on a flora, of the autoecological and phytogeographycal spectra of species was undertaken. This analysis is based on the floristic material from different botanical surveys carried out in 2012, and deposited at the National Herbarium of the Congo (IEC). Over a study area of 202’700 ha investigated through 243 phytosociological plots, a matrix of 580 specific and subspecific taxa, distributed in 386 genus and 119 families, were inventoried. Seven species, of which one for the science, were new for the flora of Republic of Congo. The families of Fabaceae, Poaceae, Rubiaceae, Euphorbiaceae, of Malavaceae and Annonaceae and are the most diversified in species. The ecological spectrum highlights the strong preponderance of the phanerophytes, sarcochores and mesophiles, thereby confirming the dominance of the forest biodiversity compared to grasslands. From a phytogeographical perspective, the preponderance of the base element identified as well as three families and eleven genus of endemic nature integrate the flora within the Guineo-Congolian centre of endemism.
Author Keywords: Flora, autoecological and phytogeographical spectra, Kouilou, Republic of the Congo.
Abstract: (french)
La zone d’étude est située au nord de Pointe noire, dans le Département du Kouilou, en République du Congo. Pour mieux connaître la richesse floristique et la position chorologique du site d’intérêt, une analyse sur la flore, des spectres autoécologiques et phytogéographiques des espèces a été entreprise. Cette analyse est basée sur le matériel floristique issu de différentes prospections botaniques effectuées en 2012, et déposé à l’Herbier National du Congo (IEC). Sur une superficie de 202.700 hectares prospectée, au travers de 243 relevés phytosociologiques, une matrice floristique de 580 espèces et taxons infra spécifiques réparties en 386 genres et en 119 familles, a été retenue. Sept nouvelles espèces, dont une nouvelle pour la science, sont des ajouts à la flore du Congo. Les familles des Fabaceae, des Poaceae, des Rubiaceae, des Euphorbiaceae, des Malavaceae et des Annonaceae et sont les plus diversifiées en espèces. Les spectres écologiques mettent en relief la forte représentativité des phanérophytes, des sarcochores et des mésophylles, confirmant de facto la prépondérance de la biodiversité forestière par rapport aux formations herbacées. Sur le plan phytogéographique, la prépondérance de l’élément base décelé ainsi que la présence de trois familles et de onze genres endémiques, intègrent bien cette flore au Centre d’endémisme guinéo-congolais.
Author Keywords: Flore, spectres autoécologiques, spectres phytogéographiques, Kouilou, République du Congo.
How to Cite this Article
Edmond Sylvestre Miabangana-, Gilbert Nsongola, Ben Orban, Margaretha van Rooyen, Noel Van Rooyen, and Jérôme Gaugris, “Floristic and phytogeographycal analysis of coastal and subcoastal vegetation in the Kouilou Department (Republic of Congo),” International Journal of Innovation and Applied Studies, vol. 19, no. 1, pp. 206–217, January 2017.
