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• Text account
• Data table and detailed info
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• Reference and further resources

The site was identified as important in 2014 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species') at the site:

Species	Red List1	Season	Year(s)	Size	IBA criteria
Greylag Goose Anser anser	LC	passage	2007-2013	1,460-6,200 individuals	B1i
Pink-footed Goose Anser brachyrhynchus	LC	passage	2010-2013	620-2,500 individuals	B1i
Velvet Scoter Melanitta fusca	VU	passage	2005-2014	50-130 individuals	A1

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2014) may differ.

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2014. The most recent assessment (2016) is shown below.

State (condition of the trigger species' populations)
Species	Reference	Actual	Units	% remaining	Result
Greylag Goose Anser anser	6,200	6,200	individuals	100	favourable
Pink-footed Goose Anser brachyrhynchus	2,500	2,500	individuals	100	favourable

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Human intrusions and disturbance	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Agricultural expansion and intensification	happening now	small area/few individuals (<10%)	no or imperceptible deterioration	low
Residential and commercial development	happening now	small area/few individuals (<10%)	no or imperceptible deterioration	low
Biological resource use	happening now	small area/few individuals (<10%)	no or imperceptible deterioration	low
Invasive and other problematic species and genes	happening now	small area/few individuals (<10%)	no or imperceptible deterioration	low
Pollution	happening now	small area/few individuals (<10%)	no or imperceptible deterioration	low
Climate change and severe weather	happening now	small area/few individuals (<10%)	no or imperceptible deterioration	low

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Most of site (50-90%) covered (including the most critical parts for important bird species)	Unknown	The conservation measures needed for the site are being comprehensively and effectively implemented	low

Year	Protected Area	Designation	% overlap with IBA
1983	Leinøra	Nature Reserve	1
1983	Gaulosen	Nature Reserve	6
1983	Gaulosen	Landscape Protected Area	19
2002	Trondheimfjord wetland system	Ramsar Site, Wetland of International Importance	26
2016	Gaulosen	Marint verneområde (naturmangfoldloven)	65
2016	Gaulosen	Naturreservat	28

Habitat1	Habitat detail	% of IBA
Marine Intertidal		major (>10)
Marine Neritic		major (>10)
Marine Coastal/Supratidal		minor (<10)

1. IUCN Habitat classification.

Land use	% of IBA
nature conservation and research	80
not utilised	20

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Gaulosen (Norway). Downloaded from https://datazone.birdlife.org/site/factsheet/gaulosen-iba-norway on 23/11/2024.