Table 2 Occurrence of species hybridising with OSR in biotope types of Brandenburg (water and forest biotopes irrelevant for these species)
Meadows | Dry grasslands | Disturbed areas | Hedgerows, plantations | Arable land | Gardens | Specific biotopes | Settlements, industrial areas | Road verges | Sum | % of occurrence accord. to Floraweb (2009) | |
|---|---|---|---|---|---|---|---|---|---|---|---|
Total biotope area (% total area) | 9.0 | 0.5 | 10.6 | 6.0 | 36.1 | 10.3 | 0.4 | 24.2 | 2.9 | ||
Brassica rapa | – | – | 1 | 0 | 0 | – | 1 | 1 | 1 | 4 | 0 |
Raphanus raphanistrum | 0.3 | 0.3 | 2 | 0.3 | 5 | 5 | – | – | 12.9 | 15 | |
Diplotaxis muralis | – | 1 | 10 | 3 | 1 | 1 | 15 | 20 | 51 | 50 | |
Diplotaxis tenuifolia | – | 1 | 20 | 1 | 3 | 2 | 1 | 25 | 20 | 73 | 70 |
Brassica nigra | – | – | 3 | – | – | – | – | – | – | 3 | 3 |
Brassica oleracea | – | – | 1 | – | 1 | 5 | 1 | – | 1 | 9 | 5 |
Descurainia sophiab | – | – | 25 | 5 | 30 | 10 | 5 | 15 | 20 | 100 | 100 |
Erucastrum gallicum | – | – | 5 | 0.5 | – | – | – | – | 5 | 10.5 | 10 |
Hirschfeldia incana | – | – | 5 | – | – | – | – | – | 5 | 10 | 10 |
Raphanus sativus | – | – | 15 | – | 15 | 30 | 3 | 10 | 10 | 83 | – |
Rapistrum rugosum | – | 1 | 5 | 0.3 | 1 | 1 | 1 | 1 | 5 | 15.3 | 10 |
Sinapis alba | – | – | 10 | 1 | 15 | 10 | 1 | 2 | 5 | 43 | – |
Sinapis arvensis | 1 | 1 | 20 | 1 | 30 | 5 | 5 | 15 | 20 | 98 | 95 |
feral OSR | – | – | 25 | – | 45 | – | – | 20 | 10 | 100 | 100 |
No. of species | 2 | 5 | 14 | 8 | 11 | 9 | 9 | 9 | 12 | ||
Frequency | 1.3 | 4.3 | 147 | 9.1 | 148 | 69 | 19 | 104 | 122 | ||
Average frequencya | 0.7 | 0.9 | 10.5 | 1.1 | 13.5 | 7.7 | 2.1 | 11.6 | 10.2 |