Spatiotemporal Variation of Phytoplankton Community Structure in the Crater Lake Barombi Kotto, Cameroon

Abstract

Salacia reticulata which is a well known plant for antidiabetic properties were subject to elicitor application. The field grown plants were sprayed with aqueous extracts of 2% Aspergillus niger mycelium as biotic elicitor and 0.2mM salicylic acid as abiotic elicitor. Elicitation of phenolics and flavonoids were marginal in both the treatments. Formation of seven new compounds in biotic elicitor treatment and eight new compounds in abiotic elicitor treatment was evident from GCMS studies. Significantly Ala-Gly, Trimethylsilyl Ester; Cyclotrisiloxane, Hexamethyl and Eicosanoic Acid, 2,3-Bis[(Trimethylsilyl) Oxy] Propyl Ester were the new compounds found in both the elicitor treatments. Cyclotrisiloxane, Hexamethyl-is a known molecule with Antioxidant, Antiasthmatics and Antogonositic effects. Interestingly, Benzene acetonitrile, Alpha.-(.Beta.-D-Glucopyranosyloxy)-,(R)-, which is a potent anticancer agent and Antioxidant ,was found only upon biotic elicitor treatment. Thus this study has led to the finding of new molecules in Salacia with potent novel medicinal properties.

Tree Species Composition and Diversity in the Riparian Forest of Lake Barombi Kotto, Cameroon

“…The riparian forest describes the stretch of natural forest that surrounds Lake Barombi Kotto, a shallow fresh water crater lake located 100 m above sea level in a complex geological arrangement of volcanic rocks. It is found between latitude 4˚27'49.3''N and 4˚28'29.2''N, and longitude 9˚15'56.1''E and 9˚15'36.4''E in Meme Division of the South West Region, Cameroon [21]. The continuous and adequate availability of both ground and shallow water table around the Lake Barombi Kotto allows the establishment and long-term existence of different plant species, thus justifying their classification as riparian vegetation (Figure 1).…”

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

“…Moreover, our recordings were high compared to that reported in the mangrove environments of Kerala situated in India [74]. It is also the case for lakes such as the Crater Lake at Barombi Kotto (North-West Cameroon) where eight species belonging to seven genera were recorded [75]. It is possible that patterns in Nyong and Kienké river mouths are dependent on local environmental conditions or the sampling methodology and design.…”