|Central coordinates||5o 25.00' East 52o 59.00' North|
|IBA criteria||A4i, A4iii, B1i, C2, C3, C4, C6|
|Year of IBA assessment||2000|
Site description An area of shallow waters, wet meadows and (landward of the dyke) improved grassland along the Frisian west coast. It is a subsite of Lake IJsselmeer (034), and lies adjacent to the Makkumer- and Kooiwaard (035) in the north. This site, together with site 035, formed part of a single, larger site (former site NL016) in the previous pan-European IBA inventory (Grimmett and Jones 1989).
Key Biodiversity Non-breeding numbers are based on aerial counts which tend to underestimate species with a scattered occurrence. The site is an important roost for geese and waders, but actual roosting numbers are poorly reflected by counts. The average seasonal peak number of waterbirds during 1992-1996 exceeded 20,000.
|Species||Season||Period||Population estimate||Quality of estimate||IBA Criteria||IUCN Category|
|Pied Avocet Recurvirostra avosetta||non-breeding||1988||1,500 individuals||poor||A4i, B1i, C2||Least Concern|
|Black-tailed Godwit Limosa limosa||non-breeding||1985-1986||9,000 individuals||medium||A4i, B1i, C3||Near Threatened|
|Ruff Calidris pugnax||breeding||1988-1991||13 breeding pairs||good||C6||Least Concern|
|Ruff Calidris pugnax||non-breeding||1986||7,000 individuals||poor||C6||Least Concern|
|Common Tern Sterna hirundo||breeding||1987-1991||1,680 breeding pairs||good||C2, C6||Least Concern|
|A4iii Species group - waterbirds||unknown||-||20,000 individuals||unknown||A4iii, C4|
|Protected area||Designation||Area (ha)||Relationship with IBA||Overlap with IBA (ha)|
|Friese IJsselmeerkust I||Natural Monument||4,800||protected area overlaps with site||550|
|Friese IJsselmeerkust II||Natural Monument||120||protected area overlaps with site||2|
|Workumerwaard||Wetlands of International Importance (Ramsar)||0||protected area overlaps with site||0|
|IUCN habitat||Habitat detail||Extent (% of site)|
|Wetlands (inland)||Standing freshwater||39%|
|Artificial - terrestrial||Highly improved re-seeded landscapes||61%|
|Land-use||Extent (% of site)|
|nature conservation and research||36%|
Protection status National Partial International Partial550 ha of IBA covered by Natural Monument (Friese IJsselmeerkust I, 4,800 ha). 2 ha of IBA covered by Natural Monument (Friese IJsselmeerkust II, 120 ha). 550 ha of IBA covered by Special Protection Area (Friese IJsselmeerkust, 5,130 ha).
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Recommended citation BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Workumerwaard. Downloaded from http://www.birdlife.org on 29/08/2016
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