Table 3 Summary of indicator species analysis showing indicator taxa, relative abundance, relative frequency, and indicator value (IV) for each group
From: Diatoms as an indicator for tile drainage flow in a German lowland catchment
Species | Relative abundance | Relative frequency | IV | |||
|---|---|---|---|---|---|---|
Ri | TD | Ri | TD | Ri | TD | |
Amphora ovalis (Kützing) | 95 | 5 | 27 | 3 | 26 | 0 |
Cocconeis placentula (Ehrenberg) | 82 | 18 | 90 | 25 | 74 | 5 |
Cyclotella meneghiniana (Kützing) | 74 | 26 | 92 | 55 | 68 | 15 |
Fragilaria biceps (Kützing) | 61 | 39 | 100 | 60 | 61 | 24 |
Fragilaria elliptica (Schumann) | 75 | 25 | 59 | 10 | 44 | 2 |
Fragilaria leptostauron (Ehrenberg) | 100 | 0 | 14 | 0 | 14 | 0 |
| Â | 87 | 13 | 16 | 3 | 14 | 0 |
Meridion circulare (Greville) | 61 | 39 | 83 | 48 | 50 | 19 |
Navicula lanceolata (Ehrenberg) | 73 | 27 | 97 | 80 | 71 | 22 |
Navicula perrotettii (Grunow) | 86 | 14 | 25 | 5 | 22 | 1 |
Navicula viridula (Kützing) | 62 | 38 | 86 | 45 | 53 | 17 |
Nitzschia sigma (Kützing) | 58 | 42 | 90 | 43 | 52 | 18 |
Staurosira phoenicenteron (Ehrenberg) | 100 | 0 | 22 | 0 | 22 | 0 |
Surirella elegans (Ehrenberg) | 63 | 37 | 68 | 25 | 43 | 9 |
Synedra binodis (Ehrenberg) | 100 | 0 | 27 | 0 | 27 | 0 |
Planothidium lanceolatum (Brébisson ex Kützing) | 32 | 68 | 100 | 90 | 32 | 61 |
Achnanthidium minutissimum (Kützing) | 20 | 80 | 83 | 78 | 16 | 62 |
Navicula gregaria (Donkin) | 33 | 67 | 92 | 85 | 30 | 57 |