PL074
Woniesc reservoir


IBA Criteria

Year of most recent IBA criteria assessment: 2010

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Bean Goose Anser fabalis LC passage 2004-2008 7,000-8,000 individuals C3
Common Little Bittern Ixobrychus minutus LC breeding 2004-2009 23-34 breeding pairs C6
A4iii Species group - waterbirds n/a passage 2004-2008 18,000-22,000 individuals 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)
2010 very high favourable low
Was the whole site covered? Yes State assessed by Population
Accuracy of information medium

Threats to the site (pressure)
Threat Level 1 Threat Level 2 Timing Scope Severity Result
Agricultural expansion and intensification marine and freshwater aquaculture - subsistence/artisinal aquaculture happening now majority/most of area/population (50-90%) very rapid to severe deterioration very high
Biological resource use hunting & collecting terrestrial animals - intentional use (species being assessed is the target) likely in short term (within 4 years) majority/most of area/population (50-90%) moderate to rapid deterioration high
Human intrusions and disturbance recreational activities likely in short term (within 4 years) majority/most of area/population (50-90%) moderate to rapid deterioration high
Natural system modifications dams & water management/use - dams (size unknown) happening now majority/most of area/population (50-90%) very rapid to severe deterioration very high
Residential and commercial development tourism and recreation areas likely in short term (within 4 years) majority/most of area/population (50-90%) moderate to rapid deterioration high

Condition of habitat (state)
Habitat Habitat Detail Reference Area (ha) Actual Area (ha) % of habitat remaining % of carrying capacity (overall) Result
Wetlands (inland) Standing freshwater 777 777 - good (> 90%) favourable

Condition of key/trigger populations (state)
Scientific Common TargetPop ActualPop Units Remaining Result
Ixobrychus minutus 25 25 breeding pairs 100 favourable

Conservation actions taken at site (response)
Conservation Designation Management Planning Conservation Action Result
Whole area of site (>90%) covered by appropriate conservation designation Not assessed Substantive conservation measures are being implemented but these are not comprehensive and are limited by resources and capacity low
For more information about IBA monitoring please click here

IBA Protection

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Zbiornik Wonieść Special Protection Area (Birds Directive) 2,802 protected area overlaps with site 2,517
Zachodnie Pojezierze Krzywińskie Site of Community Importance (Habitats Directive) 5,495 protected area overlaps with site 953
Ostoja żółwia błotnego Rezerwat Przyrody 4 protected area contained by site 0
OChK Pojezierze Krzywinsko - Osieckie w woj. Wielkopolskim Protected Landscape Area 51,065 protected area contains site 900
Krzywińsko-Osiecki wraz z zadrzewieniami generała Dezyderego Chłapowskiego i kompleksem leśnym Osieczna-Góra Obszar Chronionego Krajobrazu 65,288 protected area contains site 0

Habitats

IUCN Habitat Habitat detail Extent (% of site)
Forest Broadleaved deciduous woodland, Native coniferous woodland, Mixed woodland, Alluvial and very wet forest -
Grassland Mesophile grasslands -
Wetlands (inland) Standing freshwater, Water fringe vegetation -
Artificial/Terrestrial Highly improved re-seeded landscapes, Arable land, Ruderal land -
Other -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
agriculture -
fisheries/aquaculture -
forestry -
tourism/recreation -
water management -
hunting -
For further information about the land use classification please click here.


Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: Woniesc reservoir. Downloaded from http://www.birdlife.org on 28/11/2022.