Geoscience Reference
In-Depth Information
600
500
400
300
200
100
0
1990
1995
2000
2005
2010
Year period
(a)
400
300
200
100
Figure 16.6
Number of Atlantic
salmon reported caught by anglers in
Cantabria (a) between 1990 and 2008,
and (b) running 5-year average. All
salmon rivers (-
•
-); Pas-Pisue na river
(-
0
), Deva river
(-
-), Nansa river (-
-) Miera river
(
−−♦−−
).
··◦
-
··
), As on river (
······
Year period
(b)
Results
salmon distribution and areas affected by relevant
human pressures. The salmon population was
considered vulnerable if more than 20% of its
distribution range coincided with areas of high
sensitivity pressures or more than 40% of medium
sensitivity pressures. Overall conservation status
was assessed as a combination of all these indicators
(Figure 16.5).
Extent and conservation status of
alder-ash alluvial forest
An estimated 1084 ha of alder-ash alluvial forest
occur along the
Natura 2000
river network,
equivalent to 2.5 % of the mapped area (Annex 1).
The majority of the habitat occurred along river
