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Saskatoon Lake

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Grebe Survey Summary

  • Max Adults: 500 to 999
  • Year: 1992
  • Most Recent Adults: 51
  • Year: 2015
  • Survey Type: N/A
  • Most Common Threats Reported: N/A
Lake name:
Saskatoon Lake
Location:
Alberta
Latitude:
55.2197222
Longitude:
-119.0927778
Surface area (km2):
7.47
Basin type:
non-reservoir
Management agency:
Province of Alberta
Region associations:
Boreal Parkland ecoregion; Saskatoon Lake Bird Sanctuary; Saskatoon Island Provincial Park
Designations:
Park
Comments:
A very shallow, medium-sized, and slightly saline lake.

Surveys (3)

Survey Citation:
Alberta Sustainable Resource Development and Alberta Conservation Association. 2006. Status of the western grebe (Aechmophorus occidentalis) in Alberta. Alberta Sustainable Resource Development, Wildlife Status Report No. 60, Edmonston, AB. 29 pp.

  • Time period
    1992
  • Source
    Report
  • Both Western and Clarks?
    N
Count Type Range Max Year
Max Adults 501 to 1000 500 to 999 1992
Most Recent Adults 501 to 1000 500 to 999 1992
Max Nests N/A N/A N/A
Most Recent Nests N/A N/A N/A
Max Chicks N/A N/A N/A
Most Recent Chicks N/A N/A N/A

Comments:

Data from Table 1 ("Summary of lakes in Alberta supporting western grebe colonies of over 500 breeding birds, adapted from Hanus 2002) which is divided into categories of lakes with 1000+ birds and lakes with 500 to 999 birds and not specific count numbers. Saskatoon Lake is in the Boreal natural region.

Survey Citation:
Wollis, H., and C. Stratmoen. 2010. Population study of western grebes in Alberta 2001-2009: Implications for management and status designation. Alberta Sustainable Resource Development, Fish and Wildlife Division, Alberta Species at Risk Report No. 138. Edmonton, AB. 18 pp.

  • Time period
    1992, 2009?
  • Source
    Report
  • Both Western and Clarks?
    N
Count Type Range Max Year
Max Adults 101 to 500 500 1992
Most Recent Adults 0 0 2008/2009?
Max Nests 0 0 2008/2009?
Most Recent Nests 0 0 2008/2009?
Max Chicks N/A N/A N/A
Most Recent Chicks N/A N/A N/A

Comments:

This report is a continuation of a western grebe monitoring project started in 2001 to survey colonies in Alberta and assess population trends and distribution. Known and new colonies were searched for each year through 2009. This entry is from Table 2 comparing most recent estimate of # adults with highest estimate year. No nesting in "recent" years, I entered as 2008/2009 but it is unclear. For 1992, highest estimate of adult #, migrating grebes may have been counted in September.

Survey Citation:
Environment and Climate Change Canada. 2021. Management Plan for the western grebe (Aechmophorus occidentalis) in Canada [Proposed]. Species at Risk Act Management Plan Series. Environment and Climate Change Canada, Ottawa. 5 iv + 52 pp.

  • Time period
    1996, 2015
  • Source
    Management plan
  • Both Western and Clarks?
    N
Count Type Range Max Year
Max Adults 101 to 500 200 1996
Most Recent Adults 1 to 100 51 2015
Max Nests N/A N/A N/A
Most Recent Nests N/A N/A N/A
Max Chicks N/A N/A N/A
Most Recent Chicks N/A N/A N/A

Comments:

From Appendix B, data columns are historical high count, high count since 2000, and most recent count. Since minimum count was not stated, I entered the minimum from these columns though it might not be the actual minimum across the span of years reported. Also, there is no detail on years that were excluded from surveying so range of survey years may be inaccurate. Footnote for this lake indicates that for 2015 to 2016, though breeding was not confirmed, potential habitat was available and lake was occupied by Western grebes. Sources are Prescott et al., 2018 and Alberta Environment and Parks, 2018.

Sources of Information

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