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

Abstract

low environmental constant. Although these two river mouths were suitable for fish farming, direct consumption of raw water is detrimental to human health.

Biodiversity and the Community Structure of Chromista Cavalier-Smith, 1981 in Nyong and Kienke River Mouths (South-Cameroon)

“…Nevertheless, the demand is growing and fishermen complain about the deterioration of the fish resources for many reasons including irresponsible fishing practices (use of pesticides) and the poor land use management [35]. In this region, the community structure of aquatic micro algae is little known, except works concerning the tidal variation impact on the abundance of phytoplankton in the Nyong estuary [38], seasonal variation of the water quality and the composition of the phytoplankton communities in lower Nyong estuary [39], influence of physico-chemical parameters on the zooplankton dynamics in Kienke estuary [40], the water quality, the biodiversity and abundance of blue-green algae in Nyong and Kienke River mouths [41]. But nothing is known concerning the zoonotic chromists, the toxigenic species, those useful for the nutrition of fish.…”

“…The present study aimed to establish a baseline of information on the distribution of chromists, as a first step in evaluating the status and the occurrence of species known as bio-indicators of the aquatic life quality (useful species or producers of toxins). 1B), situated in the Southern coastal zone of Cameroon [41]. They are separated by a distance of 111.1 km.…”

“…They are separated by a distance of 111.1 km. The prevailing climate is tropical with rainfall even during the driest months (December and January: 54.2 mm and 33.8 mm respectively) [41,42]. The average air temperature ranges from 24.4°C (August) to 26.7°C (March) and the average rain fall ranges from 116 mm (January) to 340 mm (September).…”

“…The average air temperature ranges from 24.4°C (August) to 26.7°C (March) and the average rain fall ranges from 116 mm (January) to 340 mm (September). The average air humidity ranges from 84.0% (January to March) to 87.0% (September and October) [41,42]. Four seasons are defined: a long dry season (late November-February), a short rainy season (March-June), a short dry season (July-August) and a long rainy season (early September-early November) [36,41].…”

“…The average air humidity ranges from 84.0% (January to March) to 87.0% (September and October) [41,42]. Four seasons are defined: a long dry season (late November-February), a short rainy season (March-June), a short dry season (July-August) and a long rainy season (early September-early November) [36,41]. Soils are acidic, yellow ferralitic types, poor in minerals and organic matters and soils on gneiss outcrop cover the bulk between Campo and Kribi [36,41].…”