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| Info-AJIRAS-® Journal ISSN 2429-5396 (Online) / Reference CIF/15/0289M |
American Journal of Innovative Research & Applied Sciences
|
American Journal of innovative
Research & Applied Sciences
Research & Applied Sciences
ISSN 2429-5396 (Online)
OCLC Number: 920041286
OCLC Number: 920041286
Authors Contact
*Correspondant author and authors Copyright © 2024:
| Yvon-Bert Pambou 1* | Pierre Philippe Mbehang Nguema 1 | Paul Yannick Bitome Essono 1 | Calixte Bikie Janpou 1 | Emelie Arlette Apinda Legnouo 1 | Ephrem Nzengue 1 | Christian Mikolo Yobo 1 | Silas Lendzele Sevidzem 3 | Christophe Roland Zinga 1 | Noël Ovono Edzang 2 | Guy-Serge Bignoumba 2 | Rodrigue Mintsa Nguema 1,3 | and | Jacques François Mavoungou 1|
Affiliation.
1.Institut de Recherche en Écologie Tropicale | Département des Écosystèmes Aquatiques | Unité de Recherche en Eau et Environnement | Centre National de la Recherche Scientifique et Technologique (IRET/DÉA/CENAREST) | BP 13345 Quartier Gros-bouquet | Libreville | Gabon
2. Faculté des Lettres et Sciences Humaines (FLSH) | Département de Géographie | Campus de l’Université Omar BONGO | Libreville | Gabon |
3. Transmissible Diseases Ecology Laboratory | Department of Environmental Health | University of Libreville Nord, BP1177 | Libreville | Gabon |
This article is made freely available as part of this journal's Open Access:
| DOI: 10.5281/zenodo.10452148 |
*Correspondant author and authors Copyright © 2024:
| Yvon-Bert Pambou 1* | Pierre Philippe Mbehang Nguema 1 | Paul Yannick Bitome Essono 1 | Calixte Bikie Janpou 1 | Emelie Arlette Apinda Legnouo 1 | Ephrem Nzengue 1 | Christian Mikolo Yobo 1 | Silas Lendzele Sevidzem 3 | Christophe Roland Zinga 1 | Noël Ovono Edzang 2 | Guy-Serge Bignoumba 2 | Rodrigue Mintsa Nguema 1,3 | and | Jacques François Mavoungou 1|
Affiliation.
1.Institut de Recherche en Écologie Tropicale | Département des Écosystèmes Aquatiques | Unité de Recherche en Eau et Environnement | Centre National de la Recherche Scientifique et Technologique (IRET/DÉA/CENAREST) | BP 13345 Quartier Gros-bouquet | Libreville | Gabon
2. Faculté des Lettres et Sciences Humaines (FLSH) | Département de Géographie | Campus de l’Université Omar BONGO | Libreville | Gabon |
3. Transmissible Diseases Ecology Laboratory | Department of Environmental Health | University of Libreville Nord, BP1177 | Libreville | Gabon |
This article is made freely available as part of this journal's Open Access:
| DOI: 10.5281/zenodo.10452148 |
| ISSN: 2429-5396 (e) | https://www.american-jiras.com | |
| Web Site Form: v 0.1.05 | JF 22 Cours, Wellington le Clairval, Lillebonne | France |
| Web Site Form: v 0.1.05 | JF 22 Cours, Wellington le Clairval, Lillebonne | France |
ABSTRACT
Background: The Gabonese coastal waters are subject to several activities, that most of the time, degrade this ecosystem. Objectives: It is in this context that sediments from the coastal of Cap Estérias were studied, in order to assess its state of pollution in relation with the Solen guineensis (sea knife) species fishing activities. Methods: Sediment samples were collected during the dry season in three sites (Bobanya, Évanidja Ndoumba and Idolo) in the Akanda Estérias Cap area. In these different sites, the physical parameters (Temperature, pH, Electrical conductivity, Salinity and Turbidity) of water are measured in situ, using the AQUAREAD multi-parameter. Chemical pollutants contained in these sediments (Pb, F-, SO42- and NO3- ions) are recorded using activated strips. Finally, the identification of fecal germs is conducted by counting the number of colonies in Petri dishes, on Mac Conkey agar. Results: Parameters such as temperature (30 °C) and pH (basic) are within the limits of good water quality and therefore favorable for the coastal aquatic fauna. This is not the case for the other parameters (EC, Salinity and Turbidity) measured. The measured chemical elements reveal that sediments of this water body are highly polluted by two of the four targeted chemicals, in proportion ranging from 300 to 600 times more (for Lead) than the required environmental threshold, and between 3 to 6 times more (of the same threshold) for fluoride ions. On the contrary, no pollution (with neither sulphate, nor nitrogen) is detected. Bacteriological analysis reveals that sediments of the studied soils harbor pathogenic fecal coliform germs, with a high bacterial density. In addition, it is found that this microbial contamination is related to aquatic turbidity. Conclusions: Chemical pollution and density of coliform germs found in these sediments could be transferred from water to the fished aquatic organisms, including Solen guineensis species. In the long term, this contamination chain could cause major health issues to consumers. Perspectives: Finally, an analysis of the biological quality of aquatic organisms in target environments, in relation to the observed pollution, could be interesting to complete this study.
Keywords: Cap Estérias coastal, Water and sediment quality, Prevention environmental pollution risks, Solen guineensis, Artisanal fishing activities.
Background: The Gabonese coastal waters are subject to several activities, that most of the time, degrade this ecosystem. Objectives: It is in this context that sediments from the coastal of Cap Estérias were studied, in order to assess its state of pollution in relation with the Solen guineensis (sea knife) species fishing activities. Methods: Sediment samples were collected during the dry season in three sites (Bobanya, Évanidja Ndoumba and Idolo) in the Akanda Estérias Cap area. In these different sites, the physical parameters (Temperature, pH, Electrical conductivity, Salinity and Turbidity) of water are measured in situ, using the AQUAREAD multi-parameter. Chemical pollutants contained in these sediments (Pb, F-, SO42- and NO3- ions) are recorded using activated strips. Finally, the identification of fecal germs is conducted by counting the number of colonies in Petri dishes, on Mac Conkey agar. Results: Parameters such as temperature (30 °C) and pH (basic) are within the limits of good water quality and therefore favorable for the coastal aquatic fauna. This is not the case for the other parameters (EC, Salinity and Turbidity) measured. The measured chemical elements reveal that sediments of this water body are highly polluted by two of the four targeted chemicals, in proportion ranging from 300 to 600 times more (for Lead) than the required environmental threshold, and between 3 to 6 times more (of the same threshold) for fluoride ions. On the contrary, no pollution (with neither sulphate, nor nitrogen) is detected. Bacteriological analysis reveals that sediments of the studied soils harbor pathogenic fecal coliform germs, with a high bacterial density. In addition, it is found that this microbial contamination is related to aquatic turbidity. Conclusions: Chemical pollution and density of coliform germs found in these sediments could be transferred from water to the fished aquatic organisms, including Solen guineensis species. In the long term, this contamination chain could cause major health issues to consumers. Perspectives: Finally, an analysis of the biological quality of aquatic organisms in target environments, in relation to the observed pollution, could be interesting to complete this study.
Keywords: Cap Estérias coastal, Water and sediment quality, Prevention environmental pollution risks, Solen guineensis, Artisanal fishing activities.
Abstarct7-December-2023
| JANUARY | VOLUME 18 | ISSUE N° 1 | 2024 |
| ARTICLES | Am. J. innov. res. appl. sci. Volume 18, Issue - 1 Pages 20-30 (January, 2024)
| ARTICLES | Am. J. innov. res. appl. sci. Volume 18, Issue - 1 Pages 20-30 (January, 2024)
QUALITY CONTROL OF THE AQUATIC ECOSYSTEM, IN RELATION WITH FISHING ACTIVITIES OF Solen guineensis: CASE OF SEDIMENTS OF THE COASTAL CAP ESTERIAS AREA, LIBREVILLE GABON
CONTROLE DE LA QUALITE DE L'ECOSYSTEME AQUATIQUE EN RELATION AVEC LES ACTIVITES DE PECHE DE Solen guineensis : CAS DES SÉDIMENTS DE LA ZONE CÔTIÈRE DU CAP ESTERIAS, LIBREVILLE GABON
| Yvon-Bert Pambou 1* | Pierre Philippe Mbehang Nguema 1 | Paul Yannick Bitome Essono 1 | Calixte Bikie Janpou 1 | Emelie Arlette Apinda Legnouo 1 | Ephrem Nzengue 1 | Christian Mikolo Yobo 1 | Silas Lendzele Sevidzem 3 | Christophe Roland Zinga 1 | Noël Ovono Edzang 2 | Guy-Serge Bignoumba 2 | Rodrigue Mintsa Nguema 1,3 | and | Jacques François Mavoungou 1|. Am. J. innov. res. appl. sci. 2024; 18(1):20-30. doi: 10.5281/zenodo.10452148
| PDF FULL TEXT | | XML FILE | | https://doi.org/10.5281/zenodo.10452148 |
CONTROLE DE LA QUALITE DE L'ECOSYSTEME AQUATIQUE EN RELATION AVEC LES ACTIVITES DE PECHE DE Solen guineensis : CAS DES SÉDIMENTS DE LA ZONE CÔTIÈRE DU CAP ESTERIAS, LIBREVILLE GABON
| Yvon-Bert Pambou 1* | Pierre Philippe Mbehang Nguema 1 | Paul Yannick Bitome Essono 1 | Calixte Bikie Janpou 1 | Emelie Arlette Apinda Legnouo 1 | Ephrem Nzengue 1 | Christian Mikolo Yobo 1 | Silas Lendzele Sevidzem 3 | Christophe Roland Zinga 1 | Noël Ovono Edzang 2 | Guy-Serge Bignoumba 2 | Rodrigue Mintsa Nguema 1,3 | and | Jacques François Mavoungou 1|. Am. J. innov. res. appl. sci. 2024; 18(1):20-30. doi: 10.5281/zenodo.10452148
| PDF FULL TEXT | | XML FILE | | https://doi.org/10.5281/zenodo.10452148 |