evidence of reproduction has recently been documented at different locations in the
basin. Overall, among the 11 diadromous species historically present in the Seine
basin, only the European sturgeon seems to be definitively extirpated. However,
the species that have recently naturally recolonised the Seine River basin are still
very vulnerable due to the small size of their populations.
Fig. 2 Commercial landings of diadromous fish on the lower Seine River in Rouen between 1867
and 1894. The number of operating fishing boats is also indicated (from Refs. [21] and [25])
Changes in Fish Communities of the Seine Basin over a Long-Term Perspective
307
basin. Overall, among the 11 diadromous species historically present in the Seine
basin, only the European sturgeon seems to be definitively extirpated. However,
the species that have recently naturally recolonised the Seine River basin are still
very vulnerable due to the small size of their populations.
Fig. 2 Commercial landings of diadromous fish on the lower Seine River in Rouen between 1867
and 1894. The number of operating fishing boats is also indicated (from Refs. [21] and [25])
Changes in Fish Communities of the Seine Basin over a Long-Term Perspective
307