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Location Estonia, Saare County
Central coordinates 22o 37.00' East  58o 13.00' North
IBA criteria A4i, B1i, C2, C3
Area 3,768 ha
Year of IBA assessment 2003

Eesti Ornitiliigiaühing (EOÜ)

Site description A complex of shallow (<4 m) bays and small islets on the southern coast of Saaremaa island, with vast reedbeds, coastal meadows and saltmarshes. The main economic activities are fishing, sheep-grazing and forestry.

Key Biodiversity Kasti bay is an important staging area for migrating geese and a notable breeding area for several waterbirds. Significant proportion (³1%) of national population breeding at site: Sterna albifrons (min. 10 pairs).

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Common Crane Grus grus passage  1996  630 individuals  unknown  B1i, C2  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Kasti lahe hoiuala Limited Management Zone 3,726 protected area overlaps with site 3,492  
Kasti maastikukiatseala Landscape Protection Area 193 protected area contained by site 193  
P Species Protection Site 45 protected area contained by site 45  
West Estonian Archipelago UNESCO-MAB Biosphere Reserve 1,560,000 protected area contains site 3,768  


IUCN habitat Habitat detail Extent (% of site)
Forest Broadleaved deciduous woodland; Native coniferous woodland  6%
Grassland   1%
Wetlands (inland) Water fringe vegetation  13%
Sea   73%
Shrubland   6%

Land use

Land-use Extent (% of site)
agriculture 1%
forestry 5%
fisheries/aquaculture 70%
nature conservation and research 98%
hunting -
tourism/recreation -

Protection status National None International High3,877 ha of IBA covered by Biosphere Reserve (West Estonian Archipelago, 1,560,000 ha).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Kasti bay. Downloaded from on 23/10/2016

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