| Taxa | Natural Substrate | Artificial Substrate | ||||||||||||||||
| Summer | Autumn | Winter | Summer | Autumn | Winter | |||||||||||||
| C | I1 | I2 | C | I1 | I2 | C | I1 | I2 | C | I2 | C | I1 | I2 | C | I1 | I2 | ||
| ACON | Achnanthes conspicua A. Mayer | 0.4 | 0.1 | 0.6 | 0.6 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.4 | 0.1 | 0.0 | 0.0 | 0.2 | 0.6 | 0.3 |
| ADMI | Achnanthidium minutissimum (Kützing) Czarnecki | 3.4 | 0.8 | 1.8 | 1.5 | 0.5 | 0.0 | 0.7 | 0.3 | 3.0 | 2.1 | 4.3 | 7.4 | 1.5 | 1.5 | 1.5 | 0.0 | 1.3 |
| ANMN | Actinocyclus normanii (Gregory) Hustedt | 0.1 | 0.1 | 0.0 | 0.5 | 0.3 | 1.1 | 0.0 | 0.0 | 0.3 | 0.0 | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| ACYB | Amphora cymbamphora Cholnoky | 0.0 | 0.2 | 0.0 | 0.0 | 0.6 | 0.0 | 0.0 | 0.7 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 0.0 | 0.0 | 0.0 | 0.1 |
| ACOE | Amphora copulata (Kützing) Schoeman & Archibald | 2.5 | 6.7 | 4.8 | 13.1 | 10.1 | 4.5 | 2.4 | 4.2 | 3.8 | 2.3 | 0.3 | 7.2 | 11.4 | 5.4 | 5.5 | 8.7 | 4.3 |
| AMID | Amphora indistincta Levkov | 0.5 | 5.5 | 5.5 | 5.2 | 1.9 | 5.3 | 2.3 | 3.7 | 5.8 | 1.0 | 0.1 | 2.1 | 1.0 | 0.4 | 1.5 | 0.5 | 0.1 |
| AOVA | Amphora ovalis (Kützing) Kützing | 0.1 | 0.8 | 0.9 | 1.7 | 0.7 | 0.9 | 0.2 | 0.8 | 0.3 | 0.0 | 0.1 | 0.0 | 0.4 | 0.8 | 0.0 | 5.8 | 0.6 |
| APED | Amphora pediculus (Kützing) Grunow | 25.8 | 22.5 | 18.8 | 23.3 | 10.0 | 5.5 | 26.9 | 21.4 | 26.4 | 8.1 | 2.3 | 28.3 | 38.3 | 8.2 | 34.9 | 1.8 | 6.0 |
| AAMB | Aulacoseira ambigua (Grunow) Simonsen | 0.0 | 0.5 | 0.5 | 0.0 | 0.0 | 0.7 | 0.4 | 0.3 | 1.2 | 0.0 | 0.1 | 0.0 | 0.0 | 1.2 | 0.0 | 1.4 | 0.8 |
| AUGR | Aulacoseira granulata (Ehrenberg) Simonsen | 0.0 | 0.1 | 0.0 | 0.0 | 0.4 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| BPAR | Bacillaria paradoxa Gmelin in Linneaeus | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 0.0 | 0.3 | 0.6 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.6 | 0.2 |
| CBAC | Caloneis bacillum (Grunow) Cleve | 0.0 | 0.1 | 0.3 | 0.2 | 0.3 | 0.2 | 0.0 | 0.2 | 0.0 | 0.2 | 0.1 | 0.0 | 0.6 | 0.6 | 0.2 | 0.0 | 0.0 |
| CPED | Cocconeis pediculus Ehrenberg | 0.8 | 4.9 | 4.8 | 0.8 | 0.7 | 0.7 | 0.7 | 0.6 | 1.5 | 2.0 | 3.2 | 1.1 | 0.3 | 1.8 | 0.9 | 0.8 | 3.2 |
| CPLE | Cocconeis placentula Ehrenberg var. euglypta (Ehrenberg) Grunow | 2.5 | 3.0 | 3.6 | 1.6 | 1.7 | 6.9 | 2.8 | 1.6 | 4.8 | 9.4 | 3.3 | 7.4 | 9.4 | 10.7 | 6.4 | 8.0 | 7.5 |
| CPLI | Cocconeis placentula var. lineata (Ehrenberg) Van Heurck | 3.8 | 5.5 | 3.5 | 2.6 | 4.1 | 7.7 | 2.9 | 3.7 | 7.5 | 8.7 | 4.5 | 6.2 | 3.2 | 5.8 | 8.3 | 9.8 | 13.6 |
| CPLA | Cocconeis placentula Ehrenberg var. placentula | 2.2 | 2.1 | 2.1 | 0.7 | 0.6 | 2.4 | 1.6 | 1.5 | 4.9 | 7.5 | 1.9 | 1.7 | 1.7 | 2.3 | 5.7 | 5.4 | 8.9 |
| CPLT9 | Cocconeis placentula var. trilineata (Peragallo & Héribaud) Cleve | 0.6 | 2.4 | 1.9 | 0.7 | 1.4 | 11.3 | 1.2 | 1.9 | 5.9 | 3.2 | 1.9 | 2.3 | 1.6 | 7.5 | 4.7 | 7.9 | 14.2 |
| CSCU | Cocconeis scutellum Ehrenberg var. scutellum | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 2.1 | 0.5 |
| CAMB | Craticula ambigua (Ehrenberg) D. G. Mann | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| CDUB | Cyclostephanos dubius (Fricke) Round | 0.0 | 0.1 | 0.2 | 0.2 | 0.1 | 0.4 | 0.4 | 0.3 | 0.2 | 0.0 | 0.1 | 0.3 | 0.0 | 0.2 | 0.2 | 1.1 | 0.2 |
| CMEN | Cyclotella meneghiniana Kützing | 0.9 | 0.1 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.1 | 2.3 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| COCE | Cyclotella ocellata Pantocsek | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.2 | 0.6 | 0.6 | 0.4 | 0.1 | 0.0 | 0.0 | 0.0 | 0.5 | 0.2 | 1.4 | 2.7 |
| CAFV | Cymbella affinis Kützing | 0.0 | 0.0 | 0.0 | 0.2 | 0.3 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| CLAN | Cymbella lanceolata (C. Agardh) Kirchner | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 |
| DCOF | Diadesmis confervacea Kützing | 0.1 | 0.0 | 0.0 | 0.1 | 0.1 | 0.1 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| DVUL | Diatoma vulgaris Bory | 0.3 | 1.2 | 1.1 | 1.7 | 1.0 | 2.9 | 2.0 | 0.3 | 0.2 | 0.0 | 0.4 | 0.6 | 0.8 | 2.0 | 0.0 | 0.8 | 0.9 |
| DOVA | Diploneis ovalis (Hilse) Cleve | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 0.0 | 0.0 | 0.4 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 |
| EARE | Ellerbeckia arenaria (Moore) Crawford | 0.0 | 0.3 | 0.2 | 0.3 | 0.2 | 0.8 | 0.0 | 1.0 | 1.7 | 0.0 | 0.1 | 0.1 | 0.0 | 0.7 | 0.0 | 0.6 | 0.4 |
| ENMI | Encyonema minutum (Hilse in Rabenhorst) D. G. Mann in Round, Crawford & Mann | 0.4 | 0.8 | 1.6 | 0.3 | 0.1 | 0.2 | 0.3 | 0.0 | 0.0 | 0.4 | 1.1 | 0.4 | 0.3 | 0.3 | 0.2 | 0.2 | 0.0 |