Table 2 Change in historical localities of G. Barbata (still present or absent, % of localities) and the major putative causes of observed decline, along the Mediterranean coasts of France.
From: Severe decline of Gongolaria barbata (Fucales) along most of the French Mediterranean coast
Newly reported sites (21th century) (%) | Still present in historical sites (%) | Disappeared from the historical sites (%) | Major putative causes of the observed decline | ||||
|---|---|---|---|---|---|---|---|
Habitat destruction / uprooting (%) | Overgrazing (%) | Introduced species / anoxic crises (%) | unknown cause (%) | ||||
French Catalonia | 0 | 0 | 100 | 10 | 90 | 0 | 0 |
Languedoc | 25 | 16 | 59 | 56 | 38 | 7 | 0 |
Western Provence | 0 | 0 | 100 | 26 | 74 | 0 | 0 |
Eastern Provence | 80 | 8 | 13 | 92 | 0 | 0 | 8 |
French Riviera | 0 | 24 | 76 | 80 | 20 | 0 | 0 |
Corsica | 57 | 11 | 32 | 29 | 36 | 7 | 29 |
