Floristic diversity of receiving environments polluted by effluent from agri-food industries

Abstract

Till date, there are few studies on the flora found in receiving environments polluted by effluent from agri-food industries. Floristic inventories of ten receiving environments in Cameroon. were carried out using the line transect method from upstream to downstream discharge areas in the Littoral and Center regions during the dry and rainy season. The abundance/dominance (AD) of each floristic survey was assessed using Braun-Blanquet scale. Species richness of the different receiving environments is marked by higher and lower Shannon Weaver (H 0) diversity index values, respectively in the rainy season and dry season from upstream to downstream. Regularity values (R) show that the maximum number of species is involved in the covering of the surface. In terms of floristic composition, the Simpson's diversity index (D) shows similarities between the different receiving environments. The Sorensen index (Q) shows similar number of common species between upstream and downstream zones of the same site. Nitrophilous species are abundant. Some could be organic pollution indicators, namely: Pennisetum purpureum, Cynodon dactylon, Commelina benghalensis, Lemna minor, Acroceras zizanoides, Echinochloa pyramidalis and Panicum maximum. The Poaceae family dominates the ten receiving environments.

Inventory of Herbaceous Species and Bioaccumulation of Heavy Metals in Their Various Parts: Case in the Urban Ecosystem of Ngaoundere, Cameroon

“…It is a perennial herb in tropical regions [23], but grows as an annual grass in temperate regions such as Georgia in the United States of America, where it is classified as one of the worst weeds affecting crop production in many African and Asian countries [24]. C. benghalensis has been found to be an indicator of pollution [25].…”

Ciências Agrárias inovações e impactos na sociedade

“…Essas perdas ocorrem principalmente devido a falta de coletas de dados e principalmente o desmatamento provocado pela ação humana (IVANAUKAS et al, 2004). Dependendo do tipo de pertubações oriundas de atividades antrópicas, as espécies vegetais podem ser afetadas em diferentes vertentes, como por exemplo, ser suprimidas A vegetação é um aspecto fundamental devido ao seu habitat e função trófica, e também porque auxilia na observação das espécies, que por sua vez podem ser identificadas e classificadas de acordo com a sua dominância no ambiente (NOUKEU et al, 2019).…”