NL051
Biesbosch


IBA Criteria

Year of most recent IBA criteria assessment: 2016

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Tundra Swan Cygnus columbianus LC non-breeding 2011-2015 624-1,507 individuals B1i, C2, C6
Barnacle Goose Branta leucopsis LC non-breeding 2011-2016 13,624-23,215 individuals A4i, B1i, C2
Greater White-fronted Goose Anser albifrons LC non-breeding 2011-2015 31,500-38,446 individuals B1i, C3
Smew Mergellus albellus LC non-breeding 2011-2016 446-763 individuals B1i, C2, C6
Tufted Duck Aythya fuligula LC non-breeding 2011-2016 12,324-18,218 individuals B1i, C3
Gadwall Mareca strepera LC non-breeding 2011-2016 15,655 individuals B1i, C3
Eurasian Wigeon Mareca penelope LC non-breeding 2011-2016 26,045-45,519 individuals B1i, C3
Anas crecca NR non-breeding 2011-2016 7,928-12,054 individuals B1i, C3
Common Coot Fulica atra LC winter 2011-2016 11,167-14,709 individuals B2
Black-crowned Night-heron Nycticorax nycticorax LC breeding 2011-2016 1 breeding pairs C6
Great White Egret Ardea alba LC non-breeding 2011-2016 453-961 individuals C6
Pied Avocet Recurvirostra avosetta LC breeding 2011-2016 192-408 breeding pairs C6
Black-tailed Godwit Limosa limosa NT non-breeding 2011-2015 2,517-4,196 individuals B1i, C3
Black-headed Gull Larus ridibundus LC non-breeding 2011-2016 81,530 individuals A4i, B1i, C3
Osprey Pandion haliaetus LC non-breeding 2011-2016 9-13 individuals C6
White-tailed Sea-eagle Haliaeetus albicilla LC breeding 2011-2016 1-2 breeding pairs C6
White-tailed Sea-eagle Haliaeetus albicilla LC non-breeding 2011-2016 4-6 individuals C6
Common Kingfisher Alcedo atthis LC breeding 2011-2016 22-33 breeding pairs B2, C6
Peregrine Falcon Falco peregrinus LC breeding 2011-2016 3-4 breeding pairs C6
Sedge Warbler Acrocephalus schoenobaenus LC breeding 2011-2016 1,024-1,313 breeding pairs B3
Savi's Warbler Locustella luscinioides LC breeding 2011-2015 57 breeding pairs B3
Bluethroat Cyanecula svecica LC breeding 2011-2016 995-1,165 breeding pairs C6
A4iii Species group - waterbirds n/a non-breeding 2011-2016 113,256-225,739 individuals A4iii, C4

Note: This table presents the IBA criteria triggered and the species that triggered then at the time of assessment, the current IUCN Red List category may vary from that which was in place at that time.

For more information about the IBA assessment process and criteria please click here


IBA Monitoring

Most recent IBA monitoring assessment
Year of assessment Threat score (pressure) Condition score (state) Action score (response)
2018 low not assessed medium
Was the whole site covered? No State assessed by unset
Accuracy of information medium

Threats to the site (pressure)
Threat Level 1 Threat Level 2 Timing Scope Severity Result
Energy production and mining renewable energy happening now small area/few individuals (<10%) no or imperceptible deterioration low
Human intrusions and disturbance recreational activities happening now some of area/population (10-49%) no or imperceptible deterioration low

Conservation actions taken at site (response)
Conservation Designation Management Planning Conservation 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 Some limited conservation initiatives are in place medium
For more information about IBA monitoring please click here

IBA Protection

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Sliedrechtse Biesbosch Nature Reserve 797 protected area contained by site 797
Hollands Diep Ramsar Site, Wetland of International Importance 4,050 protected area is adjacent to site 0
Dordtse Biesbosch Nature Reserve 806 protected area contained by site 806
De Biesbosch Nationaal Park 8,980 protected area overlaps with site 0
De Biesbosch National Park 7,100 protected area contained by site 7,100
Brabantse Biesbosch Nature Conservation Law 1,500 protected area contained by site 2,691
Biesbosch Site of Community Importance (Habitats Directive) 9,640 is identical to site 9,050
Biesbosch Ramsar Site, Wetland of International Importance 1,700 protected area overlaps with site 1,700
Biesbosch Natuurbeschermingswet 9,640 is identical to site 0
Biesbosch Special Protection Area (Birds Directive) 9,478 is identical to site 8,522

Habitats

IUCN Habitat Habitat detail Extent (% of site)
Forest Alluvial and very wet forest -
Wetlands (inland) Standing freshwater, Rivers and streams, Water fringe vegetation -
Artificial/Terrestrial Highly improved re-seeded landscapes -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
agriculture -
fisheries/aquaculture -
water management -
hunting -
nature conservation and research -
tourism/recreation -
urban/industrial/transport -
water management -
other -
For further information about the land use classification please click here.


Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: Biesbosch. Downloaded from http://www.birdlife.org on 18/01/2022.