email a friend
printable version
Location Norway, Nord-Trøndelag,Sør-Trøndelag
Central coordinates 10o 50.00' East  63o 28.00' North
IBA criteria A4i, A4iii, B1i, B2
Area 2,500 ha
Year of IBA assessment 2000

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
Common Eider Somateria mollissima resident  1993  6,000-9,000 breeding pairs  B1i  Least Concern 
Common Eider Somateria mollissima passage  1993  3,500-4,000 individuals  B1i  Least Concern 
Mew Gull Larus canus breeding  1993  5,000-10,000 breeding pairs  good  A4i, B1i, B2  Least Concern 
A4iii Species group - waterbirds breeding  1993  10,000-19,999 breeding pairs  unknown  A4iii   

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

Contribute  Please click here to help BirdLife conserve the world's birds - your data for this IBA and others are vital for helping protect the environment.

Recommended citation  BirdLife International (2015) Important Bird Areas factsheet: Stjørdalsfjord. Downloaded from on 03/05/2015

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