The Becks Index value was 1, the Hilsenhoff Biotic Index value was 5.077, and the Shannon Diversity Index value was 1.676.
22.
The Backs Index value was also 7, the Hilsenhoff Biotic Index value was 3.976, and the Shannon Diversity Index value was 1.933.
23.
The Shannon Diversity Index value ranges from 0.70 to 2.01 and the Hilsenhoff Biotic Index value ranges from 1.24 to 2.85.
24.
The Hilsenhoff Biotic Index value ranged from 0.28 to 2.70 and the Shannon Diversity Index value ranged from 1.45 to 2.05.
25.
The family-level Hilsenhoff Biotic Index value of Zerbe Run near Trevorton was observed to be 3.75 in 2001 ( " very good " / " excellent " ).
26.
The Hilsenhoff Biotic Index, a measure of pollution-tolerant macroinvertebrates, on much of the creek ranges from 1.6 to 2.5, although an area of the creek near Benton ranges from 2.6 to 3.5.
27.
Lewis ( 1974 ) showed that the form ( Stenacron interpunctatum / heterotarsale ) historically carried an EBI ( Empirical Biotic Index ) rating of a level ( 7 ) showing a high tolerance level to pollution's both Toxic and Organic . ( under updates)
28.
Several indices such as benthic response index ( BRI ), benthic biotic integrity ( IBI ), and relative biotic index ( RBI ) are utilized to assess biological response of the benthic community . The median score of all individual indices will establish benthic LOE.
29.
In the summer of 2012, the EPT ( Ephemeroptera, Plecoptera, and Trichoptera ) taxa richness was 10 and the Becks Index value was 9 . The Hilsenhoff Biotic Index value was 3.582 and the Shannon Wiener Index value was 2.104.
30.
On the Hilsenhoff Biotic Index ( a method of determining a stream's ecosystem quality based on its benthic macroinvertebrates ), the sites ranged from 3.538 for site T-1 to 6.2 for site T-2, with an average of 5.024.
