We investigated the response of caddisfly species assemblages in the middle reaches of the Shinano River to a flood that occurred in mid July 2006. Prior to the flood (on Day -22) the population density of total benthic caddisflies was 8,266.7 ± 2,392.1 individuals m. After the flood, by Day 11, the population density had decreased to 55.6 ± 55.6 individuals m. By Day 65, the density of caddis ...

The drainage of abandoned mines leads to several ecological problems, particularly the acidification of surface freshwater systems and heavy metal contamination. In order to study the possibility of using the behavioural early warning responses of Portuguese indigenous benthic invertebrates to detect an acute short-term pulse of Acid Mine Drainage (AMD), experiments with the Multispecies Freshw...

Between March and November 1984, Silver Creek, a small tributary of the Mahoning River in northeastern Ohio, eroded into and through a small lacustrine deposit of glacial silt. During this erosional/ siltation episode, the stream was very turbid and siltation was observed at least 5 km below the source of silt. Only a few individuals of the caddisfly, Neophylax, the mayflies, Isonychia and Sten...

During several excursions to the Chin Hills of Myanmar from 2001 2015, rich collections caddisflies were made which form basis present taxonomic and biogeographic study. A total 106 species identified including seven new species. They are described as Arctopsyche subflava sp. nov. , Hydromanicus abdominalis Cheumatopsyche janosolahi Lepidostoma subpanaitos Aplatyphylax pumilus Adicella natmatau...

The Trichoptera are an important component of freshwater ecosystems. In the Iberian Peninsula, 380 taxa caddisflies known, with nearly 1/3 total species being endemic in region. A reference collection morphologically identified specimens, representing 142 taxa, was constructed. InBIO Barcoding Initiative (IBI) 01 dataset contains records 438 sequenced specimens. this correspond to about 37% dive...

Historical mining activities cause widespread, long-term trace metal contamination of freshwater ecosystems. However, measuring bioavailability has proven difficult, because it depends on many factors, not least concentrations in water, sediment and habitat. Simple tools are needed to assess bioavailabilities. The use biomonitors been widely advocated provide a realistic measure. To date there ...

Although the differential responses of stream taxa to metal exposure have been exploited for bioassessment and monitoring, the mechanisms affecting these responses are not well understood. In this study, the subcellular partitioning of metals in operationally defined metal-sensitive and detoxified fractions were analyzed in five insect taxa. Samples were collected in two separate years along an...