Abstract Aim In the present study, structure of benthic invertebrates in ponds presence and absence Nile tilapia was evaluated. Methods The macroinvertebrates physicochemical parameters were analyzed for a period eight weeks, every 15 days, two (one with fish other without fish). Benthic sampled artificial substrate samplers, made cheap common materials, like expanded clay, loofah leaves gravel...

to date, no comprehensive study has been carried out on the chironomid larvalidentification in running waters of the country, in particular in large rivers. therefore, this article is thefirst of its kind in iran that has come out in english. samples were collected in 9 sites from thezayandehrood river a distance of 230 km down the zayandehrood dam. the sampling was repeatedfour times: november...

The purpose of this study was to analyze changes in the assemblage benthic macroinvertebrates, as a response anthropogenic environmental alterations river Extra-Andean Patagonia. Four sampling surveys were carried out between March 2017 and 2019, contrasting seasons on middle course Chico River (Santa Cruz). Six stations established: two reference upstream Gobernador Gregores town four downstre...