Volume 24, Issue 2, September 2018, Pages 773–788
TIÉBRÉ Marie-Solange1 and GOULI GNANAZAN Zinsi Roseline2
1 Laboratoire de Botanique, UFR Biosciences, Université Félix Houphouët-Boigny, Côte d'Ivoire
2 UFR Biosciences, Laboratory of botany, University Félix Houphouët-Boigny, Cocody (Abidjan), 22 BP 582 Abidjan 22, Côte d'Ivoire
Original language: English
Copyright © 2018 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.
Biological invasions have many impacts on the composition of flora and soil chemistry. In this study, we analyzed the impacts of an invasive exotic plant, Chromolaena odorata on the floristic diversity and the physico-chemical composition of the soil of the Banco National Park. For this, we compared the floristic and physicochemical parameters of 4 biotopes: forests, ruderal zones without C. odorata, ruderal zones with a young C. odorata invasion and ruderal zones with an old invasion of C. odorata. Floristic inventories and soil samples of 0-20 cm depth were made in quadrats of 4 m2 (2 m x 2 m) of each biotope. A total of 36 quadrats were placed due to 9 repetitions per biotope. The results showed that: Floristically, the ruderal areas with an old invasion of C. odorata had a low floristic richness and a low floristic diversity. In addition, the abundance of native species in these areas was reduced. At soil level, 5 chemical minerals showed significant differences. There are: organic carbon, hydrogen, exchangeable potassium, exchangeable sodium and humus. Our results also showed that areas invaded by C. odorata consume exchangeable potassium as they increase the exchangeable sodium concentrations in soils. Consequently, these two minerals could play an important role in the growth and colonization of environments by C. odorata to the detriment of native plants. Furthermore, ruderal areas with old C. odorata invasion were rich in chemical minerals unlike other biotopes.
Author Keywords: Biological invasion, Chromolaena odorata, Floristic diversity, Physico-chemical composition, Banco National Park.
TIÉBRÉ Marie-Solange1 and GOULI GNANAZAN Zinsi Roseline2
1 Laboratoire de Botanique, UFR Biosciences, Université Félix Houphouët-Boigny, Côte d'Ivoire
2 UFR Biosciences, Laboratory of botany, University Félix Houphouët-Boigny, Cocody (Abidjan), 22 BP 582 Abidjan 22, Côte d'Ivoire
Original language: English
Copyright © 2018 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
Biological invasions have many impacts on the composition of flora and soil chemistry. In this study, we analyzed the impacts of an invasive exotic plant, Chromolaena odorata on the floristic diversity and the physico-chemical composition of the soil of the Banco National Park. For this, we compared the floristic and physicochemical parameters of 4 biotopes: forests, ruderal zones without C. odorata, ruderal zones with a young C. odorata invasion and ruderal zones with an old invasion of C. odorata. Floristic inventories and soil samples of 0-20 cm depth were made in quadrats of 4 m2 (2 m x 2 m) of each biotope. A total of 36 quadrats were placed due to 9 repetitions per biotope. The results showed that: Floristically, the ruderal areas with an old invasion of C. odorata had a low floristic richness and a low floristic diversity. In addition, the abundance of native species in these areas was reduced. At soil level, 5 chemical minerals showed significant differences. There are: organic carbon, hydrogen, exchangeable potassium, exchangeable sodium and humus. Our results also showed that areas invaded by C. odorata consume exchangeable potassium as they increase the exchangeable sodium concentrations in soils. Consequently, these two minerals could play an important role in the growth and colonization of environments by C. odorata to the detriment of native plants. Furthermore, ruderal areas with old C. odorata invasion were rich in chemical minerals unlike other biotopes.
Author Keywords: Biological invasion, Chromolaena odorata, Floristic diversity, Physico-chemical composition, Banco National Park.
How to Cite this Article
TIÉBRÉ Marie-Solange and GOULI GNANAZAN Zinsi Roseline, “Impact of Chromolaena odorata (L.) R.M. King & H. Rob. (Asteraceae) on the floristic composition and the physico-chemical properties of the soil of a coastal relict forest,” International Journal of Innovation and Applied Studies, vol. 24, no. 2, pp. 773–788, September 2018.
