Pollution de l’environnement et changement climatique

Abstrait

A Brief Review on Effects of Pesticides on Ecosystem Function in Freshwater Systems

Onyango Onigo

Predicting ecological goods of pollutants remains grueling because of the sheer number of chemicals and their nebulous part in biodiversity- ecosystem function connections. We estimate responses of experimental pond ecosystems to formalized attention of 12 fungicides, nested in four fungicide classes and two fungicide types. We show harmonious goods of dressings and germicides on ecosystem function, and slightly lower harmonious goods on community composition. Goods of fungicides on ecosystem function are intermediated by differences in the cornucopia and community composition of functional groups. Through bottom-up goods, dressings reduce respiration and primary productivity by dwindling the cornucopia of phytoplankton. The goods of germicides on respiration and primary productivity of phytoplankton are driven by top-down goods on zooplankton composition and cornucopia, but not uproariousness. By demonstrating harmonious goods of fungicides on communities and ecosystem functions and linking fungicide- convinced changes in functional groups of organisms to ecosystem functions, the study suggests that ecological threat assessment of registered chemicals could be simplified to synthetic chemical classes or types and groups of organisms with analogous functions and chemical venom.