The site was identified as important in 2008 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.Populations meeting IBA criteria ('trigger species'):
|Species||Current IUCN Red List Category||Season||Year(s)||Population estimate at site||IBA criteria met|
|Caspian Tern Hydroprogne caspia||LC||breeding||1986||1,500 nests||A4i|
|Common Tern Sterna hirundo||LC||breeding||1991||3,400 nests||A4i|
The current IUCN Red List category may differ from that which was valid at the time of IBA criteria assessment (2008).
|Habitat (IUCN level 1)||Habitat detail||Extent (% of site)|
|Wetlands (inland)||Freshwater lakes & pools||-|
|Land-use||Extent (% of site)|
BirdLife International (2023) Important Bird Area factsheet: Lake St. Martin Islands. Downloaded from http://datazone.birdlife.org/site/factsheet/lake-st.-martin-islands-iba-canada on 24/09/2023.