[ EVALUATION DU DEGRE DE POLLUTION DE LA RIVIERE KINTAMA PAR L’UTILISATION DES MACROINVERTEBRES BENTHIQUES ]
Volume 30, Issue 2, May 2017, Pages 159–174
Marcellin AMULI BISIMWA1
1 Institut Supérieur Pédagogique d’Idjwi, RD Congo
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.
Assessing the degree of pollution of the river Kintama by the use of benthic macroinvertebrates is the theme of this work. It was made from samples taken between July and August 2016 Idjwi island territory to characterize this said river from possible pollution. The levy was followed by sorting at the bank, identification and preservation of specimens to the laboratory for teaching and research unit in Hydrobiology applied PSI / Bukavu. Wildlife identified in this work consists of 1834 individuals corresponding to 16 families belonging to 3 main faunal groups (annelids, mollusks, arthropods). The number of benthic settlement showed that Trichoptera, Diptera, Oligochaeta, Odonata, the are dominant. Decapod crustaceans, beetles and molluscs constitute only a small fraction of the total fauna. Values of Standardized Global Biological Index ranked the water upstream and downstream of Kintama in the category of medium and bad ecological quality for those intermediate stations. On the whole, the waters of this river are medium ecological quality. Furthermore, analysis of stand structure through Shannon Weaver index and equitability showed that Kintama river is characterized by macrobenthic fauna less diverse and generally unbalanced. The index of Margalef proved that Kabati station (1,596) followed by the mouth of Lake Kivu (1,411) and Lugano (1,368 are richer compared to resorts Institute Ziwa Kivu (0.882) and Deck Kintama (0.752) poorest taxa. note that all these values were lower than 2 which means that taxonomic richness is low everywhere. the results obtained in this study, conducted in a river crossing a rural area, have seen a situation that tends to a calamity of the water quality of the Kintama and especially in its middle section. The results of this study can also be used to conserve biodiversity and restoring these ecosystems continually impacted.
Author Keywords: Evaluation, Kintama, macroinvertebrates, benthic, pollution, Quality.
Volume 30, Issue 2, May 2017, Pages 159–174
Marcellin AMULI BISIMWA1
1 Institut Supérieur Pédagogique d’Idjwi, RD Congo
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
Assessing the degree of pollution of the river Kintama by the use of benthic macroinvertebrates is the theme of this work. It was made from samples taken between July and August 2016 Idjwi island territory to characterize this said river from possible pollution. The levy was followed by sorting at the bank, identification and preservation of specimens to the laboratory for teaching and research unit in Hydrobiology applied PSI / Bukavu. Wildlife identified in this work consists of 1834 individuals corresponding to 16 families belonging to 3 main faunal groups (annelids, mollusks, arthropods). The number of benthic settlement showed that Trichoptera, Diptera, Oligochaeta, Odonata, the are dominant. Decapod crustaceans, beetles and molluscs constitute only a small fraction of the total fauna. Values of Standardized Global Biological Index ranked the water upstream and downstream of Kintama in the category of medium and bad ecological quality for those intermediate stations. On the whole, the waters of this river are medium ecological quality. Furthermore, analysis of stand structure through Shannon Weaver index and equitability showed that Kintama river is characterized by macrobenthic fauna less diverse and generally unbalanced. The index of Margalef proved that Kabati station (1,596) followed by the mouth of Lake Kivu (1,411) and Lugano (1,368 are richer compared to resorts Institute Ziwa Kivu (0.882) and Deck Kintama (0.752) poorest taxa. note that all these values were lower than 2 which means that taxonomic richness is low everywhere. the results obtained in this study, conducted in a river crossing a rural area, have seen a situation that tends to a calamity of the water quality of the Kintama and especially in its middle section. The results of this study can also be used to conserve biodiversity and restoring these ecosystems continually impacted.
Author Keywords: Evaluation, Kintama, macroinvertebrates, benthic, pollution, Quality.
Abstract: (french)
L’évaluation du degré de pollution de la rivière Kintama par l’utilisation des macroinvertébrés benthiques est le thème de ce travail. Il a été réalisé à partir des prélèvements réalisés entre juillet et août 2016 en territoire insulaire d’Idjwi afin de caractériser cette dite rivière par rapport à une éventuelle pollution. Le prélèvement était suivi de tri à la berge, de l’identification et de la conservation des spécimens au laboratoire de l’unité d’enseignement et de recherche en hydrobiologie appliquée de l’ISP/ Bukavu. La faune recensée dans ce travail se compose de 1834 individus correspondant à 16 Familles appartenant à 3 groupes faunistiques principaux (Annélides, Mollusques, arthropodes). L’effectif du peuplement benthique a montré que les Trichoptères, les Diptères, les Oligochètes, les Odonates, les sont dominants. Les Décapodes, les Coléoptères et les Mollusques ne constituent qu’une faible fraction de la faune totale. Les valeurs de l'Indice Biologique Global Normalisé ont classé les eaux en amont et en aval de Kintama dans la catégorie des eaux de qualité écologique moyenne et mauvaises pour celles des stations intermédiaires. D’une manière globale, les eaux de cette rivière sont de qualité écologique moyenne. Par ailleurs, l’analyse de la structure des peuplements grâce aux indices de Shannon Weaver et d’équitabilité a montré que la rivière Kintama se caractérise par une faune macrobenthique moins diversifiée et globalement peu équilibrée. L’indice de Margalef a prouvé que la station Kabati(1,596) suivie de l’embouchure du lac Kivu(1,411) puis de Lugano (1,368 sont les plus riches par rapport aux stations Institut Ziwa Kivu(0,882) et Pont Kintama(0,752) plus pauvres en taxons. A noter que toutes ces valeurs se sont révélées inférieures à 2 ce qui signifie que la richesse taxonomique est faible partout. Les résultats obtenus dans cette étude, réalisée dans une rivière traversant un milieu rural, font constater une situation qui tend vers une calamité de la qualité des eaux de la Kintama et surtout dans son tronçon intermédiaire. Les résultats de cette étude peuvent par ailleurs être utilisés pour conserver la biodiversité et la restauration de ces écosystèmes continuellement impactés.
Author Keywords: Evaluation, Kintama, Macro-invertébrés, benthiques, pollution, Qualité.
How to Cite this Article
Marcellin AMULI BISIMWA, “EVALUATION OF THE DEGREE OF POLLUTION OF THE RIVER FROM USE KINTAMA MACROINVERTEBRATES BENTHIC,” International Journal of Innovation and Scientific Research, vol. 30, no. 2, pp. 159–174, May 2017.
