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Location Norway, Nord-Trøndelag,Sør-Trøndelag
Central coordinates 10o 50.00' East  63o 28.00' North
IBA criteria A1, B1i
Area 5,250 ha
Year of IBA assessment 2014

Norsk Ornitologisk Forening

Site description A 10-km long fjord in the south-eastern part of the Trondheimsfjord, 20-25 km east of Trondheim. At the outlet of the Stjørdalselva river there are meadows, intertidal flats of sand and mud, and shallow subtidal habitat. Further out, on the northern side of the site, there are fewer mudflats. The sea here is still quite shallow: as far as 1-2 km offshore it is not more than 10-20 m deep.

Key Biodiversity This is a notable staging area for congregatory seabirds and waterbirds, especially in spring˜for example, in April there are 20,000-30,000 seabirds present. Birds are partly attracted by herring roe, which may be washed ashore in layers up to 0.5 m thick during storms and rough seas (the area is important for spawning herring Clupea harengus in spring).

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Velvet Scoter Melanitta fusca passage  2004-2014  700-1,000 individuals  good  A1  Vulnerable 
Common Eider Somateria mollissima passage  2004-2014  1,200-4,000 individuals  good  B1i  Near Threatened 
Long-tailed Duck Clangula hyemalis passage  2004-2014  600-1,100 individuals  good  A1  Vulnerable 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Vikanbukta Wildlife Conservation Area 81 protected area contained by site 0  
Vinnan og Velvangen Wildlife Conservation Area 194 protected area contained by site 0  


IUCN habitat Habitat detail Extent (% of site)
Coastline Mud flats & sand flats; Tidal rivers & enclosed tidal waters  18%
Sea Sea inlets and coastal features  80%

Land use

Land-use Extent (% of site)
fisheries/aquaculture 20%
urban/industrial/transport 5%

Protection status National None International None

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Recommended citation  BirdLife International (2015) Important Bird and Biodiversity Area factsheet: Stjørdalsfjord. Downloaded from on 28/11/2015

To provide new information to update this factsheet or to correct any errors, please email BirdLife