Abstract Water is vital for humans, plants, and animals; unfortunately, some anthropogenic activities adversely alter water quality (WQ). Many indicators can be used WQ assessment; fortunately, extensive data simplified by using indices (WQIs). The main difference among WQIs lies in the way of assessing pollution number types used; therefore, selection a reliable WQI should first step. This res...

The Odonata are not typically regarded as informative taxa for stream bioassessment in North America compared to other insects, particularly when monitoring the ecological impacts of organic pollution. However, we hypothesized that stream-dwelling odonates useful bioindicators riparian conditions because vegetation associated with streams is used oviposition and establishing breeding territorie...

the gamasiab river has one of the highest discharge in the western iran receiving wastewater of trout frames. the present study investigated effects of wastewater using bioassessment of benthic organisms. the benthos were sampled over four seasons using a surber sampler on four stations, upstream, on the farm outlet, 500 and 1000 m down the farm outlet. 5454 benthic fauna were identified that w...

The freshwater ecosystems in the Republic of North Macedonia are considered as biodiversity hotspot on European level since they provide diverse habitats that correspond with complex ecological preferences many species require. This specially applies to crustaceans that, unfortunately, have never been focus a continuous research. In R. Macedonia, usually inhabit exposed negative anthropogenic i...

Surface coal mining with valley fills has impaired the aquatic life in numerous streams in the Central Appalachian Mountains. We characterized macroinvertebrate communities from riffles in 37 small West Virginia streams (10 unmined and 27 mined sites with valley fills) sampled in the spring index period (March–May) and compared the assessment results using familyand genus-level taxonomic data. ...

We examined inter-habitat variation in benthic macroinvertebrate assemblages in the 180-km Garrison Reach of the Upper Missouri River, North Dakota (USA) in 2001–2003. The Garrison Reach is unchannelized with a mostly rural setting. Flows are regulated by Garrison Dam.We sampled benthos from three habitats defined a priori: channel, shoreline, and backwater. Benthic assemblages were different i...