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Location Japan, Shiga
Central coordinates 136o 5.00' East  35o 15.00' North
IBA criteria A4i, A4iii
Area 72,224 ha
Altitude 0 - 85m
Year of IBA assessment 2004

Wild Bird Society of Japan



Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Falcated Duck Mareca falcata winter  2004  present  A4i  Near Threatened 
Eurasian Wigeon Mareca penelope 2004  present  A4i  Least Concern 
Common Pochard Aythya ferina 2004  present  A4i  Least Concern 
Tufted Duck Aythya fuligula 2004  present  A4i  Least Concern 
A4iii Species group - waterbirds unknown  2004  20,000 individuals  unknown  A4iii   

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Biwa-ko Wetlands of International Importance (Ramsar) 65,602 protected area contained by site 65,602  
Biwako Prefectural Wildlife Protection Area 69,546 unknown 0  
Biwako Quasi National Park 97,601 unknown 0  

Habitats

IUCN habitat Habitat detail Extent (% of site)
Wetlands (inland) Freshwater lakes and pools  -

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Lake Biwako. Downloaded from http://www.birdlife.org on 25/07/2014

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