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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
Long-tailed Duck Clangula hyemalis	VU	winter	2008-2013	1,000-4,000 individuals	A1
Goosander Mergus merganser	LC	non-breeding	2010-2013	21,000 individuals	A4i, B1i
Red-breasted Merganser Mergus serrator	LC	non-breeding	2010-2014	1,000-2,000 individuals	B1i
A4iii Species group - waterbirds	n/a	non-breeding	2010-2014	22,000-23,000 individuals	A4iii

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
Long-tailed Duck Clangula hyemalis	4,000	6,000	individuals	100	favourable
Common Eider Somateria mollissima	1,000	5,000	individuals	100	favourable
Goosander Mergus merganser	21,000	25,000	individuals	100	favourable
Red-breasted Merganser Mergus serrator	2,000	4,000	individuals	100	favourable

State (condition of the trigger species' habitats)
Habitat	Quantity (% remaining)	Quality (% carrying capacity)	Result
Grassland	good (> 90%)	good (> 90%)	favourable
Marine Neritic	good (> 90%)	good (> 90%)	favourable
Marine Intertidal	good (> 90%)	good (> 90%)	favourable

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Transportation and service corridors	likely in short term (within 4 years)	whole area/population (>90%)	very rapid to severe deterioration	very high
Biological resource use	happening now	some of area/population (10-49%)	moderate to rapid deterioration	high
Invasive and other problematic species and genes	happening now	majority/most of area/population (50-90%)	slow but significant deterioration	high
Residential and commercial development	likely in long term (beyond 4 years)	some of area/population (10-49%)	slow but significant deterioration	medium
Energy production and mining	likely in long term (beyond 4 years)	some of area/population (10-49%)	slow but significant deterioration	medium
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
Pollution	happening now	some of area/population (10-49%)	no or imperceptible deterioration	low

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Whole area of site (>90%) covered by appropriate conservation designation	A comprehensive and appropriate management plan exists that aims to maintain or improve the populations of qualifying bird species	The conservation measures needed for the site are being comprehensively and effectively implemented	high

Year	Protected Area	Designation	% overlap with IBA
1991	Tanamunningen	Naturreservat	91
2002	Tanamunningen	Ramsar Site, Wetland of International Importance	93

Habitat1	Habitat detail	% of IBA
Grassland	Alpine, subalpine and boreal grassland	5
Marine Intertidal		major (>10)
Marine Neritic		major (>10)
Marine Coastal/Supratidal		-

1. IUCN Habitat classification.

Land use	% of IBA
hunting	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Tanamunningen (Norway). Downloaded from https://datazone.birdlife.org/site/factsheet/tanamunningen-iba-norway on 22/11/2024.