Volume 30, Issue 2, May 2017, Pages 218–233
Achille NOUGA BISSOUE1, NJUMEWANG ENJOH2, Gildas Parfait NDJOUONDO3, and Siegfried Didier DIBONG4
1 Ecole Normale Supérieure d’Enseignement Technique, Université de Douala, B.P. 2701, Douala, Cameroon
2 Ecole Normale Supérieure d’Enseignement Technique, Université de Douala, B.P. 2701, Douala, Cameroon
3 Département de Biologie des Organismes Végétaux, Faculté des Sciences, Université de Douala, B.P. 24157 Douala, Cameroon
4 Département de Biologie des Organismes Végétaux, Faculté des Sciences, Université de Douala, B.P. 24157 Douala, Cameroon
Original language: English
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.
Wetlands and their biodiversity species have been undergoing an alarming degradation in the past recent years. The overall objective has been to determinate the various invasive plant species found in the study area. Floristic inventories based on the development of transects and quadrats helped to make surveys by using coefficients of abundance-dominance and sociability. Physico-chemical parameters of the Nyong river were measured. Species richness of study sites amounts to 20 species distributed in 17 families. Results shown that the distribution of macrophytes varies with Shannon diversity index, from 3.193695 (Ekombitie/Mbega) to 1.263136 (CDE/CAMWATER). Echinochloa pyramidalis (51 %) is the most abundant specie in the study sites. The result shown the causes and factors limiting the potential of the biotope of the Nyong River. It has been clearly shown that invasive plants contribute in a significant way to euthrophication of the river: Echinocloa pyramidalis, 51%; Ipomea aquatic, 18.31%; Nymphaea lotus,12.83%; Leersia hexandra, 9.15%; Commelina benghalensis, 9.15%. The ecosystem approach for the better management of this site is proposed. From this study we therefore open another parenthesis for research which is based on managing wastes within the Mbalmayo council area and monitoring the quantity and quality of the waste stream leaving Yaounde and other environs into the Nyong River. This will help to reduce the pollution of this river, monitor point source and non-point source pollution sources and hence to reduce the proliferation of macrophytes since one of the best options of ecosystem restoration is preventing nutrient loading.
Author Keywords: Wetlands, diversity, aquatic plants, Nyong, Mbalmayo.
Achille NOUGA BISSOUE1, NJUMEWANG ENJOH2, Gildas Parfait NDJOUONDO3, and Siegfried Didier DIBONG4
1 Ecole Normale Supérieure d’Enseignement Technique, Université de Douala, B.P. 2701, Douala, Cameroon
2 Ecole Normale Supérieure d’Enseignement Technique, Université de Douala, B.P. 2701, Douala, Cameroon
3 Département de Biologie des Organismes Végétaux, Faculté des Sciences, Université de Douala, B.P. 24157 Douala, Cameroon
4 Département de Biologie des Organismes Végétaux, Faculté des Sciences, Université de Douala, B.P. 24157 Douala, Cameroon
Original language: English
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
Wetlands and their biodiversity species have been undergoing an alarming degradation in the past recent years. The overall objective has been to determinate the various invasive plant species found in the study area. Floristic inventories based on the development of transects and quadrats helped to make surveys by using coefficients of abundance-dominance and sociability. Physico-chemical parameters of the Nyong river were measured. Species richness of study sites amounts to 20 species distributed in 17 families. Results shown that the distribution of macrophytes varies with Shannon diversity index, from 3.193695 (Ekombitie/Mbega) to 1.263136 (CDE/CAMWATER). Echinochloa pyramidalis (51 %) is the most abundant specie in the study sites. The result shown the causes and factors limiting the potential of the biotope of the Nyong River. It has been clearly shown that invasive plants contribute in a significant way to euthrophication of the river: Echinocloa pyramidalis, 51%; Ipomea aquatic, 18.31%; Nymphaea lotus,12.83%; Leersia hexandra, 9.15%; Commelina benghalensis, 9.15%. The ecosystem approach for the better management of this site is proposed. From this study we therefore open another parenthesis for research which is based on managing wastes within the Mbalmayo council area and monitoring the quantity and quality of the waste stream leaving Yaounde and other environs into the Nyong River. This will help to reduce the pollution of this river, monitor point source and non-point source pollution sources and hence to reduce the proliferation of macrophytes since one of the best options of ecosystem restoration is preventing nutrient loading.
Author Keywords: Wetlands, diversity, aquatic plants, Nyong, Mbalmayo.
How to Cite this Article
Achille NOUGA BISSOUE, NJUMEWANG ENJOH, Gildas Parfait NDJOUONDO, and Siegfried Didier DIBONG, “ELABORATION OF MANAGEMENT PLAN OF AN INVASIVE AQUATIC PLANT SPECIES: THE CASE OF THE NYONG RIVER BASIN MBALMAYO CAMEROON,” International Journal of Innovation and Scientific Research, vol. 30, no. 2, pp. 218–233, May 2017.
