Fig. 26.20 Distribution map of Black Sea shad in the Black Sea biogeographic region of the
Danube Delta – marine zone (ROSCI 0066)
Table 26.3 General assessment matrix for the conservation status of Alosa tanaica (Black Sea
shad)
Parameter
Conservation status
Favourable
(green)
UnfavourableInadequate
(amber')
Unfavourable-Bad
(red)
Unknown
(insufficient
information for
an accurate
assessment)
Range
Stable (loss and expansion in balance) or
increasing and not smaller than the
“favourable reference range”.
Population
Population above “favourable reference
population” and reproduction, mortality
and age structure not deviating from
normal (if data available).
Habitat for the
species
Area of habitat is sufficiently large (and
stable or increasing) and habitat quality is
suitable for the long term survival of
the species.
Main pressures and threats to the species
not significant; species will remain viable
on the long-term.
Overall
assessment of
CS s
FV
Future prospects
(as regards to
population, range
and habitat
availability)