Parts of Randers and Mariager Fjords (Denmark) IBA | Details

DK015

Parts of Randers and Mariager Fjords

Current view: Data table and detailed info

IBA Justification

The site was identified as internationally important for bird conservation in 2000 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 List	Season (year/s of estimate)	Size	IBA criteria
Whooper Swan Cygnus cygnus	LC	winter (1995)	2,000 birds	A4i, B1i, B3, C2, C6
Brent Goose Branta bernicla	LC	non-breeding (1994)	3,500 birds	A4i, B1i, C3
Common Shelduck Tadorna tadorna	LC	non-breeding (1994)	5,470–5,670 birds	A4i, B1i, C3
A4iii Species group - waterbirds	n/a	non-breeding (1999)	min 20,000 birds	A4iii, C4

IBA Conservation

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2000. The most recent assessment (2010) is shown below.

IBA conservation assessment
Year of assessment	State	Pressure	Response
2010	very poor	not assessed	not assessed
Whole site assessed?	State assessed by	Accuracy of information
yes	population	good

State (condition of the trigger species' populations)
Species	Actual vs Reference (units)	% remaining	Result
Tundra Swan Cygnus columbianus	5 / 97 (birds)	6	very poor
Barnacle Goose Branta leucopsis	84 / 3,500 (birds)	3	very poor
Melanitta nigra	5,300 / 54,000 (birds)	10	very poor
Melanitta fusca	1,000 / 20,000 (birds)	5	very poor
Common Goldeneye Bucephala clangula	2,500 / 4,000 (birds)	63	poor
Greater Scaup Aythya marila	5,000 / 11,600 (birds)	44	poor
Great Cormorant Phalacrocorax carbo	5,000 / 5,000 (birds)	100	good
Eurasian Golden Plover Pluvialis apricaria	19,060 / 19,060 (birds)	100	good
Black-headed Gull Larus ridibundus	17,600 / 17,600 (birds)	100	good
Sandwich Tern Thalasseus sandvicensis	173 / 173 (pairs)	100	good
Red-backed Shrike Lanius collurio	2 / 2 (pairs)	100	good

Response (conservation actions taken for the trigger species and/or their habitats)
Designation	Planning	Action	Result
Not assessed	Not assessed	Not assessed	not assessed

IBA Protection

Year	Protected Area	Designation (management category)	% coverage of IBA
1992	Mariagerfjord Kommune	§3 beskyttet natur (alle søer, moser, vandløb, heder, enge mv) (IV)	<1
2001	Ajstrup Bugt	Fredet ved afgørelse, exl. Kirkeomgivelser (V)	2
2009	Ålborg Bugt, Randers Fjord og Mariager Fjord	Marine Protected Area (OSPAR) (UA)	37

Habitats

Habitat	% of IBA	Habitat detail
Artificial/Terrestrial	50	Arable land
Forest	15
Marine Intertidal	major (>10)
Marine Neritic	major (>10)

Land use

Land use	% of IBA
agriculture	-

Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Parts of Randers and Mariager Fjords (Denmark). Downloaded from https://datazone.birdlife.org/site/factsheet/parts-of-randers-and-mariager-fjords-iba-denmark on 23/12/2024.