Data Zone
Country/territory: Netherlands
IBA Criteria met: A4i, A4iii, B1i, B2, B3, C2, C3, C4, C6 (2016)
For more information about IBA criteria please click here
Area: 9,478 ha
| Most recent IBA monitoring assessment | |||
|---|---|---|---|
| Year of assessment | Threat score (pressure) | Condition score (state) | Action score (response) |
| 2018 | low | not assessed | medium |
| For more information about IBA monitoring please click here | |||
Site description
A former tidal estuary in the Rhine/Maas river system, sealed off from the sea in 1970 (see Haringvliet, 024) and no longer subject to marine influence. The site consists of a flood-plain, polders, marshland and swamp-forest, and is intersected by many formerly tidal creeks. The site is adjacent to Hollands Diep (025) in the west; it does not include three drinking-water reservoirs within its boundary. Human activities include reed-harvesting (`Other' land-use, below).
Key biodiversity
An important roost for geese Anser which come from surrounding feeding areas, but counts underestimate actual numbers. The mean total number of waterbirds in January exceeds 20,000.
Recommended citation
BirdLife International (2021) Important Bird Areas factsheet: Biesbosch. Downloaded from
http://www.birdlife.org on 03/12/2021.
