Table 3 Frequency of occurrence of benthic alien species within Constanta harbour monitoring network (%)
Species | Site 1 n = 25 | Site 2 n = 24 | Site 3 n = 21 | Total n = 70 |
|---|---|---|---|---|
Balanus improvisus | 100 | 100 | 100 | 100 |
Rhithropanopeus harrisii | 96 | 79 | 90 | 89 |
Ficopomatus enigmaticus | 84 | 67 | 90 | 80 |
Corambe obscura | 56 | 58 | 52 | 56 |
Diadumene lineata | 32 | 25 | 43 | 33 |
Molgula manhattensis | 8 | 21 | 33 | 20 |
Anadara sp. | 16 | 13 | 5 | 11 |
Mya arenaria | 12 | 4 | 14 | 10 |
Blackfordia virginica | 8 | 0 | 0 | 3 |
Balanus amphitrite | 0 | 0 | 5 | 1 |