Buffer Lake (11529)
Canada, North America
Site overview
KBA status: confirmed
Global KBA criteria: D1a
Year of last assessment: 2008
National site name: Buffer Lake
Central coordinates: Latitude: 52.3810, Longitude: -106.0005
System: freshwater, terrestrial
Elevation (m): 508 to 508
Area of KBA (km2): 129.71576
KBA classification: Global
Legacy site: Yes
Site details
Site description: Buffer Lake is located 5 km northeast of Vonda, Saskatchewan (about 90 km northeast of Saskatoon). It is a large, shallow lake that is largely dependent on seasonal rains and spring run-off. Extensive mudflats result from periods of drought. Beaches that provide habitat for nesting Piping Plovers are located along the northern and western shorelines. Nearly all of the surrounding land has been cultivated for agricultural purposes.
Rationale for qualifying as KBA: This site qualifies as a Key Biodiversity Area of international significance that meets the thresholds for at least one criterion described in the Global Standard for the Identification of KBAs.
Additional biodiversity: Whooping Cranes, a globally and nationally endangered species, are regularly recorded at Buffer Lake during fall migration. Between 1975 and 1997 an average of 4 cranes were observed during a total of ten surveys. The migratory Whooping Crane population has increased from a low of 13 or 14 birds in 1941, but still consists of only 183 birds (winter 1998/99). Buffer Lake is also significant for staging shorebirds. During surveys in the spring of 1987, a one-day count of 10,672 shorebirds was recorded. On another occasion (spring migration during the early 1990s), a total of 12,000 Red-necked Phalaropes was recorded. The site also receives shorebird usage during the fall migration: 834 Baird's Sandpipers; 444 Hudsonian Godwits (almost 1% of the world's estimated population); and 270 Sanderlings have been recorded. This area seems to be important for the Buff-breasted Sandpiper as it is one of the few areas in the province where it still occurs as a regular spring migrant. Piping Plovers, a globally vulnerable and nationally endangered species, also nest at this site. During the 1996 International Piping Plover census, a total of six plovers were observed. During the 1991 census only three birds were observed.
Habitats
Land use: agriculture | hunting | rangeland/pastureland
| IUCN Habitat | Coverage % | Habitat detail |
|---|---|---|
| Artificial - Terrestrial | 3 | |
| Grassland | 2 | |
| Wetlands(Inland) | 95 |