Volume 20, Issue 4, July 2017, Pages 1198–1209
Niamien-Ebrottié Julie Estelle1, Mousso Henri Gauthier2, Coulibaly Kalpy Julien3, Allassane OUATTARA4, GOURÈNE Germain5, and Mireille Dosso6
1 Laboratory of Environment and aquatic biology, UFR Sciences and Management of Environment, Nangui Abrogoua University, Côte d’Ivoire
2 Laboratory of Environment and aquatic biology, UFR Sciences and Management of Environment, Nangui Abrogoua University, Côte d’Ivoire
3 Institut Pasteur Côte d’Ivoire, 01 BP 490 Abidjan 01, Côte d’Ivoire
4 Laboratoire d’Environnement et de Biologie Aquatique (LEBA), UFR des Sciences et Gestion de l’Environnement, Université Nangui Abrogoua, 02 BP 801 Abidjan 02, Côte d’Ivoire
5 Department of Environment and Aquatic Biology, University Nanguy Abrogoua, 02 BP 801 Abidjan 02, Côte d’Ivoire
6 Laboratoire de Bactériologie- Virologie, Institut Pasteur, Côte d’Ivoire
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.
Phytoplankton abundance in relation with physico-chemical parameters were investigated at 11 stations monthly from May 2014 to april 2015 in Aghien lagoon. Distribution of phytoplankton abundance had homogeny within the entire lagoon. However it notices differences between seasons. The high abundance was recorded in the low rainy season (2.3 107 cells/mL) and the low one in the high dry season (1.1 107 cells/mL).The seasonality is confirmed by Indicator value and RDA. Three groups were determined according seasons. The high rainy season assemblage was influence by conductivity and high temperature. Ammonium, BOD, dissolved oxygen and pH influence species of low dry season. Concerning the group 3 (high dry season and low rainy season), abundance of species is associated to high value of turbidity and nitrate. Indeed, the phytoplankton community of Aghien lagoon is still dominated by Cyanobacteria such as Microcystis wesenbergii (Komarek.) Komarek., M. aeruginosa (Kützing) Nägeli., Microcystis sp., Aphanocapsa incerta (Lemm.) Cronb. & Kom. and Anabaena circinalis Rabenh.ex Born. & Flash. These species are responsible for different blooms recorded in the Aghien lagoon. It also important to identified the kind of toxins these bloom-forming cyanobactorial produce in this lagoon.
Author Keywords: Aghien lagoon, Côte d’Ivoire, dynamic, Indval, Phytoplankton, spatial and temporal.
Niamien-Ebrottié Julie Estelle1, Mousso Henri Gauthier2, Coulibaly Kalpy Julien3, Allassane OUATTARA4, GOURÈNE Germain5, and Mireille Dosso6
1 Laboratory of Environment and aquatic biology, UFR Sciences and Management of Environment, Nangui Abrogoua University, Côte d’Ivoire
2 Laboratory of Environment and aquatic biology, UFR Sciences and Management of Environment, Nangui Abrogoua University, Côte d’Ivoire
3 Institut Pasteur Côte d’Ivoire, 01 BP 490 Abidjan 01, Côte d’Ivoire
4 Laboratoire d’Environnement et de Biologie Aquatique (LEBA), UFR des Sciences et Gestion de l’Environnement, Université Nangui Abrogoua, 02 BP 801 Abidjan 02, Côte d’Ivoire
5 Department of Environment and Aquatic Biology, University Nanguy Abrogoua, 02 BP 801 Abidjan 02, Côte d’Ivoire
6 Laboratoire de Bactériologie- Virologie, Institut Pasteur, Côte d’Ivoire
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
Phytoplankton abundance in relation with physico-chemical parameters were investigated at 11 stations monthly from May 2014 to april 2015 in Aghien lagoon. Distribution of phytoplankton abundance had homogeny within the entire lagoon. However it notices differences between seasons. The high abundance was recorded in the low rainy season (2.3 107 cells/mL) and the low one in the high dry season (1.1 107 cells/mL).The seasonality is confirmed by Indicator value and RDA. Three groups were determined according seasons. The high rainy season assemblage was influence by conductivity and high temperature. Ammonium, BOD, dissolved oxygen and pH influence species of low dry season. Concerning the group 3 (high dry season and low rainy season), abundance of species is associated to high value of turbidity and nitrate. Indeed, the phytoplankton community of Aghien lagoon is still dominated by Cyanobacteria such as Microcystis wesenbergii (Komarek.) Komarek., M. aeruginosa (Kützing) Nägeli., Microcystis sp., Aphanocapsa incerta (Lemm.) Cronb. & Kom. and Anabaena circinalis Rabenh.ex Born. & Flash. These species are responsible for different blooms recorded in the Aghien lagoon. It also important to identified the kind of toxins these bloom-forming cyanobactorial produce in this lagoon.
Author Keywords: Aghien lagoon, Côte d’Ivoire, dynamic, Indval, Phytoplankton, spatial and temporal.
How to Cite this Article
Niamien-Ebrottié Julie Estelle, Mousso Henri Gauthier, Coulibaly Kalpy Julien, Allassane OUATTARA, GOURÈNE Germain, and Mireille Dosso, “Spatial and seasonal dynamic of phytoplankton abundance in Aghien lagoon, Côte d’Ivoire,” International Journal of Innovation and Applied Studies, vol. 20, no. 4, pp. 1198–1209, July 2017.
