In a previous analysis, based on the samples of Method 3 only (Timm, 2003), the number of Ephemeroptera, Plecoptera
, and Trichopera (EPT), but not the ASPT or DSFI values, were markedly influenced by substrate and velocity.
Embora sendo considerados itens ocasionais, ninfas de Plecoptera
e larvas de Coleoptera-Psephenidae (Psephenus) ocorrem sob pedras ou outros objetos submersos em riachos (Borror e DeLong, 1969) e são capturadas por sucção por N.
The remaining 82 taxa were distributed among the orders Ephemeroptera (25 taxa), Trichoptera (23 taxa), Hemiptera (20 taxa), Plecoptera
(7 taxa), Megaloptera (5 taxa), and Lepidoptera (2 taxa).
A densidade de Ephemeroptera, Plecoptera
e Trichoptera foi semelhante nas duas bacias, e, no rio Campo, foram observados valores médios levemente superiores.
5) EPT Taxa Richness: EPT Taxa Richness is based on the number of pollution-sensitive taxa of Ephemeroptera (mayflies), Plecoptera
(stoneflies), and Trichoptera (caddisflies).
The specimens belonged to the orders of Plecoptera
, Coleoptera, Diptera, Ephemeroptera, Odonata, Tricoptera, and Neuroptera.
We collected the following number of genera: 39 Coleoptera, 35 Diptera (excluding Chironomidae), 18 Ephemeroptera, 10 Heteroptera (aquatic Hemiptera), 16 Odonata, 16 Plecoptera
, 29 Trichoptera, 13 Crustacea, and 8 Mollusca.
Current "popular" metrics include the total number of taxa and the number or percentage of organisms in specific groups, such as EPT (Ephemeroptera, Plecoptera
and Trichoptera), chironomids, and the most dominant taxon.
A Sedimentation Potential Index (SPI) was calculated for each watershed and correlated with site habitat conditions, sediment depths and upstream watershed land usage Strong associations were evident between the SPI scores and specific metrics that have previously been shown to be sensitive to sedimentation impacts, such as the EPT (Ephemeroptera, Plecoptera
, Trichoptera), Sorenson Similarity and Hilsenhoff Biotic Indices.
Several macroinvertebrate metrics, such as the EPT (Ephemeropt era, Plecoptera
, Trichoptera) Index, the Hilsenhoff Biotic Index and the ratio of Hydropsychidae to total Trichoptera appear to have great sensitivity as indicators of community changes due to the impact of increasing sediment loads.
This vascular plants, breeding birds, butterflies, mosses, molluscs and EPT (Ephemeroptera, Plecoptera
and Trichoptera) may be charged.
Furthermore, this research repeated a Headwater Macroinvertebrate Field Evaluation Index (HMFEI) study of streams biology by identifying the number of Ephemeroptera (mayfly), Plecoptera
(stonefly), and Trichoptera (caddisfly) (EPT)taxa and cold-water taxa in order to compare to existing records.
, and Trichoptera; also referred to as EPT) to a less-diverse assemblage of smaller-bodied taxa such as Diptera, especially Chironomidae (Mundie and Crabtree, 1997; Blanco and Ector, 2009; Gillis and Chalifour, 2010; James et al.
01 (Linnaeus) Order Plecoptera
C Potamopygrus H 2 < 0.
Larvae of several insects, including Trichoptera, Ephemeroptera, Coleoptera, Plecoptera
and Lepidoptera, have been reported to be part of their diet (Moffet 1970, Riguelet 1977, Naranjo and Avila 2003, Ceron et al.