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Location Ukraine, Kiev
Central coordinates 31o 46.00' East  50o 27.00' North
IBA criteria A1, B2
Area 6,400 ha
Altitude 114 - 130m
Year of IBA assessment 2000

Ukranian Society for the Protection of Birds

Site description A marsh in the lower reaches of the Supoy river valley, near Yagotin town.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Eurasian Bittern Botaurus stellaris breeding  1996  200-300 breeding pairs  medium  B2  Least Concern 
Black Tern Chlidonias niger breeding  1996  400-500 breeding pairs  medium  B2  Least Concern 
Aquatic Warbler Acrocephalus paludicola breeding  1996  500-1,000 breeding pairs  medium  A1, B2  Vulnerable 

IBA Monitoring

2013 high unfavourable low
Good - based on reliable and complete / representative data

Natural system modifications dams & water management/use - abstraction of surface water (agricultural use) likely in long term (beyond 4 years) whole area/population (>90%) moderate to rapid deterioration high
Pollution agricultural & forestry effluents - type unknown/unrecorded likely in long term (beyond 4 years) majority/most of area/population (50-90%) moderate to rapid deterioration medium
Pollution domestic & urban waste water - type unknown/unrecorded likely in long term (beyond 4 years) some of area/population (10-49%) slow but significant deterioration medium

Wetlands (inland)   6400 6400 100 good (> 90%) favourable

Botaurus stellaris Eurasian Bittern 15 15 breeding pairs 100 favourable
Chlidonias niger Black Tern 50 50 breeding pairs 100 favourable
Acrocephalus paludicola Aquatic Warbler 200 85 males only 43 unfavourable

Whole area of site (>90%) covered by appropriate conservation designation  No management plan exists but the management planning process has begun  Some limited conservation initiatives are in place  low 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Supoy Marsh Zakaznik 209 protected area contained by site 209  


IUCN habitat Habitat detail Extent (% of site)
Wetlands (inland) Fens, transition mires and springs; Rivers and streams; Standing freshwater; Water fringe vegetation  100%

Land use

Land-use Extent (% of site)
fisheries/aquaculture 5%
water management -
not utilised 90%

Protection status National Partial International None209 ha of IBA covered by Protected Locality (Supoy Marsh, 209 ha). 2,000 ha of IBA covered by Protected Locality (Usovskiy, 2,000 ha).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Supij marsh. Downloaded from on 26/10/2016

To provide new information to update this factsheet or to correct any errors, please email BirdLife