Artificial substrate | ||||||
Average dissimilarity = 39.97 | ||||||
Control | Impacted | |||||
Species | Av.Abund | Av.Abund | Av.Diss | Diss/SD | Contrib% | Cum.% |
Amphora pediculus (Kützing) Grunow | 4.58 | 2.82 | 2.75 | 1.52 | 6.88 | 6.88 |
Nitzschia inconspicua Grunow | 2.85 | 2.69 | 1.54 | 1.01 | 3.86 | 10.74 |
Rhoicosphenia abbreviata (C. Agardh) Lange-Bertalot | 1.36 | 2.16 | 1.27 | 1.32 | 3.17 | 13.91 |
Nitzschia palea (Kützing) W. Smith | 0.82 | 1.15 | 1.17 | 1.2 | 2.93 | 16.85 |
Cocconeis placentula var. trilineata (Peragallo & Héribaud) Cleve | 1.78 | 2.33 | 1.13 | 1.33 | 2.83 | 19.68 |
Achnanthidium minutissimum (Kützing) Czarnecki | 1.69 | 1.11 | 1.05 | 1.23 | 2.62 | 22.29 |
Amphora copulata (Kützing) Schoeman & Archibald | 2.15 | 2.24 | 1.04 | 1.4 | 2.61 | 24.91 |
Gomphonema rhombicum M. Schmidt | 1.35 | 1.49 | 1 | 1.33 | 2.51 | 27.41 |
Navicula cryptotenella Lange-Bertalot | 2.12 | 1.7 | 0.99 | 1.29 | 2.48 | 29.89 |
Amphora ovalis (Kützing) Kützing | 0 | 0.91 | 0.95 | 1.06 | 2.37 | 32.27 |
Navicula antonii Lange-Bertalot | 1.64 | 1.01 | 0.93 | 1.09 | 2.32 | 34.58 |
Cocconeis placentula Ehrenberg var. placentula | 2.11 | 1.87 | 0.92 | 1.44 | 2.3 | 36.88 |
Gomphonema minutum (C. Agardh) C. Agardh | 1.11 | 1.44 | 0.88 | 1.18 | 2.21 | 39.09 |
Navicula tripunctata (O. F. Müller) Bory | 0.39 | 1.15 | 0.87 | 1.37 | 2.18 | 41.27 |
Cocconeis placentula var. lineata (Ehrenberg) Van Heurck | 2.75 | 2.57 | 0.83 | 1.3 | 2.07 | 43.34 |
Nitzschia amphibia Grunow | 1.51 | 1.47 | 0.78 | 1.43 | 1.96 | 45.3 |
Amphora indistincta Levkov | 1.2 | 0.51 | 0.78 | 1.51 | 1.95 | 47.26 |
Gomphonema parvulum (Kützing) Kützing | 0.41 | 0.9 | 0.78 | 1.04 | 1.94 | 49.2 |
Pleurosira laevis (Ehrenberg) Compère | 0.32 | 0.99 | 0.77 | 1.41 | 1.93 | 51.13 |