Sediment cores conta~ning different dens~t ies of Tubifex tublfex ranging from 0 to 70000 ind m-' were incubated in the laboratory Rates of O2 and NO, uptake NH,' production n~tr~fication and denitnfication were determined from sediment-water fluxes Pore water NH,+was measured at the end of the expenment At natural densities -50000 ind m ', there were increased rates of O2 consumption (x2), den...

Oligochaeta worms are important organisms in aquatic ecosystem. Their omnipresence makes them as an indicator of environmental changes and health of aquatic ecosystem. The members of the family Tubificidae and in particular, genus Limnodrilus are considered as the most tolerant oligochaets to aquatic pollution. Therefore identification and biological characteristics of this taxon are of great h...

In order to determine the structure of benthic macroinvertebrates fauna in relation with some environmental factors, a study was carried out Esoa river at Nkongsamba Littoral region Cameroon from January 2021 2022. Physico-chemical parameters were measured according APHA and Rodier recommendations, while sampling done multihabitat approach monthly frequency. The physico-chemical analyses reveal...