Diversity and distribution of algal settlement in Mangrove of Londji, Kribi-Southern-Cameroon

I.S, Motto; Priso, Richard Jules; Essomè-Koum, Guillaume Léopold; G.L.P, Gaudin; J.G, Makombu; Jourdan, T; Ndoumbè–Ebombè, M; Y.G.F., Ghepdeu; E.F, Kotte-Mapoko; Ojong, Geneva; Dicka-Kwambè, E; Onana, J. M.; Mialhe, Eric; Din, Ndongo

doi:10.35759/jabs.149.9

Cited by 3 publications

(4 citation statements)

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“…Thus, the variation in temperature among the sampling sites was due to anthropogenic activities in the study area catchment. The pH value of the 6 sites was within the permissible range and these results are similar to those of Motto et al's study in Londji River, where the pH values vary between 6 and 7, determinants of a biodiversity rich environment [15]. Electrical conductivity (EC) is a useful indicator of mineralization in a water sample.…”

Section: Discussionsupporting

confidence: 88%

“…The regularity close to 1 justified the stability of the community showing that site 5 (0.92) is the most stable site. This result is slightly high compared to Motto et al's study in the Londji River who found community stability between the values 0.8 and 0.9 [15].…”

Section: Discussioncontrasting

confidence: 61%

“…These results are similar to those of Pratibha et al's study who sampled Cyanobacteria in wetlands in the industrialized district of Sambalpur, India showed 55 species; and different to those of Gupta's study who worked on diversity of Cyanobacteria of Broknes Peninsula of Larsemann Hills, East Antarctica showed 16 species [21,22]. The results are not consistent with those found by Motto's study where Bacillariophyceae are more represented (59.67%) in the Londji River in Kribi [15]. This could be explained by the faster flow of water in this river from upstream to downstream compare to the above mentioned river.…”

Section: Discussionsupporting

confidence: 59%

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Diversity of Cyanobacteria in Some Polluted Wetlands of Nkwen in Bamenda (North-West, Cameroon)

Parfait,

Fosah,

Teke

et al. 2024

Frontiers

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Human activities more and more intensify the pollution of aquatic ecosystems. These pollutants lead to some Cyanobacteria proliferation causing “blooms” or “efflorescence” and disappearance of sensitive species. The aim of the study was to determine the composition and variation of Cyanobacteria community in some polluted wetlands of Nkwen in Bamenda. Sampling of Cyanobacteria took place from October 2022 to September 2023 by using plankton net for phytoplankton and scrubbing for periphyton. Some hydromorphological and physicochemical parameters of water were measured in situ and in the laboratory. Results showed that species richness of microalgae amounted to 11 families divided into 22 genera and 46 species. Oscillatoriaceae constituted the most important family (26.66% with 12 species) of the Cyanobacteria community, in the study sites. Shannon-Weaver’s index was weak and varied between 1.24 (site 6) and 2.65 (site 2). These results showed that wetlands of Nkwen had a Cyanobacteria community more abundant where the water velocity is low, with high nitrates and phosphates contents. Different Cyanobacteria families with strong proliferation in polluted waters (sites 1, 2 and 3) were: Oscillatoriaceae, Gloeotrichiaceae, Rivulariaceae, Nostocaceae, Merismopediaceae, Microcoleaceae, Microcystaceae and Tolypotrichaceae. On the other hand, the families abundantly present in less polluted waters (sites 4, 5 and 6) were: Chroococcaceae, Pseudanabaenaceae and Aphanizomenonaceae. Thus, physicochemical parameters have an influence on the composition and structure of Cyanobacteria community in wetlands of Nkwen in Bamenda. Monitoring, based on biological indices of Cyanobacteria, could be developed to prevent the risks of perturbation of these wetlands.

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Section: Discussionsupporting

confidence: 88%

Section: Discussioncontrasting

confidence: 61%

Section: Discussionsupporting

confidence: 59%

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Diversity of Cyanobacteria in Some Polluted Wetlands of Nkwen in Bamenda (North-West, Cameroon)

Parfait,

Fosah,

Teke

et al. 2024

Frontiers

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“…The two studied river mouths presented a low cyanobacteria-species richness compared to the situation in other freshwater environments. For example, 124 species were recorded distributed in 26 orders, 50 families and 87 genera in the Londji mangrove area (Kribi, Cameroon) [72]. Our results are close to the previous reports in Nyong River mouth alone where 37 species of cyanobacteria, nine families and three orders were identified [25] among which seven species do not appear in our collection and four species An.…”

Section: Species Richness and Diversity Of Blue-green Algaesupporting

confidence: 86%

Water Quality, Biodiversity and Abundance of Blue-Green Algae in Nyong and Kienké River Mouths (South-Cameroon)

Mokam,

Toukem,

Teufack

et al. 2024

IJEE

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Diversity and Structure of Microalgae in the Mezam River (Bamenda, Cameroon)

P.N.¹,

D.N.²,

T.F.³

2023

African Journal of Environment and Natural Science Research

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Human activities more and more intensify the imbalance of aquatic systems causing the reduction of biodiversity. The aim of the study was to identify the microalgae and to determine their distribution in the Mezam River (Bamenda, Cameroon). Sampling took place monthly from July 2021 to August 2022 using plankton net for phytoplankton and scrubbing for periphyton upstream, middle, and downstream of the river. SpeciAJENSR_O9H3LUP0es richness of microalgae amounts to 11 classes divided into 45 genera and 75 species. The most represented class was Bacillariophyceae with 42.67% and the dominant family was the Naviculaceae in terms of abundance with 10 species. Shannon-Weaver diversity index ranges from 2.055 (downstream) to 1.313 (upstream). Spatio-temporal variation of genera revealed 3 groups; group 1 brings together the genera exclusive to phytoplankton, upstream: Pleurotaenium, Synechocystis, Microcystis, and Phormidium. Group 2 brings together the genera exclusive to epiphyte, middle: Encyonema, Trachelomonas, Gloeotrichia, Aphanizomenon, and Peridinium. Group 3 brings together the common genera in the different habitats: Fragilaria, Gomphonema, Synedra, Coscinodiscus, Navicula, Cyclotella, Cymatopleura, Cymbella, Eunotia, Tabellaria, Gyrosigma, Melosira, Pinnularia, Diatoma, Cocconeis, Thalassiosira, Achnanthidium, Nitzschia, Luticola, Rhopalodia, Euglena, Clostrium, Ulothrix, Cryptomonas, Scenedesmus, Spirogyra, Uronema, Mougeotia, Oedogonium, Calothrix, Nostoc, Rivularia, Oscillatoria and Gymnodinium. These results show that Mezam River has a highly diversified community of diatoms that can be used as bio-indicators of pollution.

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Diversity and distribution of algal settlement in Mangrove of Londji, Kribi-Southern-Cameroon

Cited by 3 publications

References 0 publications

Diversity of Cyanobacteria in Some Polluted Wetlands of Nkwen in Bamenda (North-West, Cameroon)

Diversity of Cyanobacteria in Some Polluted Wetlands of Nkwen in Bamenda (North-West, Cameroon)

Water Quality, Biodiversity and Abundance of Blue-Green Algae in Nyong and Kienké River Mouths (South-Cameroon)

Diversity and Structure of Microalgae in the Mezam River (Bamenda, Cameroon)

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