|Central coordinates||17o 42.00' East 53o 8.00' North|
|IBA criteria||A4i, B1i|
|Altitude||60 - 80m|
|Year of IBA assessment||2000|
Site description Two fish-pond complexes in the Toruñ-Eberswald stream valley. lesin fish-pond complex (170 ha) lies c.20 km west of the town of Bydgoszcz, and comprises 14 small ponds of a few hectares each and one large pond (130 ha). Wystêp fish-pond complex (200 ha) is similar. The ponds are full from April to October, supplied by the Bydgoszcz channel and drainage ditches, and are used for fish-farming (carp Cyprinus). Both complexes are surrounded by wet meadows, used for pasture and hay, and areas of mire and wet forest.
Key Biodiversity The most important place in Poland for Cygnus columbianus during migration, and a moulting site for Cygnus olor. In summer up to 600 Remiz pendulinus and several dozen Panurus biarmicus are present. Species of global conservation concern that do not meet IBA criteria: Haliaeetus albicilla (one pair resident; up to five birds on passage), Crex crex (new breeder).
|Species||Season||Period||Population estimate||Quality of estimate||IBA Criteria||IUCN Category|
|Tundra Swan Cygnus columbianus||passage||1995||178-429 individuals||-||A4i, B1i||Least Concern|
|Protected area||Designation||Area (ha)||Relationship with IBA||Overlap with IBA (ha)|
|Laki Slesinskie||Nature Reserve||42||protected area contained by site||42|
|IUCN habitat||Habitat detail||Extent (% of site)|
|Forest||Alluvial and very wet forest; Broadleaved deciduous woodland; Native coniferous woodland||10%|
|Grassland||Humid grasslands; Mesophile grasslands; Steppes and dry calcareous grassland||65%|
|Wetlands (inland)||Raised bogs; Rivers and streams; Standing freshwater; Water fringe vegetation||18%|
|Land-use||Extent (% of site)|
Protection status National Low International None42 ha of IBA covered by Nature Reserve (£¹ki lesiñskie, 42 ha).
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Recommended citation BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Slesin and Wystep ponds. Downloaded from http://www.birdlife.org on 30/08/2016
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