Marguerite Lake
Grebe Survey Summary
- Max Adults: 120
- Year: 1982
- Most Recent Adults: 0
- Year: 2009?
- Survey Type: Shore; Boat; Air
- Most Common Threats Reported: N/A
- Lake name:
- Marguerite Lake
- Location:
- Alberta
- Latitude:
- 54.6188889
- Longitude:
- -110.7525
- Basin type:
- non-reservoir
- Management agency:
- BP Resources Canada Ltd.
- Lake use:
- oil extraction
- Comments:
- Not much information on this lake. A very peaty lake of oil sands. Fire-flooding tests were conducted at this lake in the early 1980s.
Surveys (3)
Survey Citation:
COSEWIC. 2014. COSEWIC assessment and status report on the western grebe (Aechmophorus occidentalis) in Canada. Committee on the Status of Endangered Wildlife in Canada. Ottawa. 55 pp. www.registrelep-sararegistry.gc.ca/default_e.cfm
-
Type
shore; boat; air -
Time period
1970, 1990 -
Source
Report -
Both Western and Clarks?
N
| Count Type | Range | Max | Year |
|---|---|---|---|
| Max Adults | 101 to 500 | 120 | 1970-1990 |
| Most Recent Adults | 1 to 100 | ? | 1990 |
| 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 Table A.2, maximum counts of breeding Western grebes from surveys mostly conducted during nesting season from June and July from 1970 to 1990 (sourced from Wilson, A. and Smith, P.A. 2013. Distribution and population status of Western Grebes in Canada. Unpublished report for the Canadian Wildlife Service). No break out of data per year or other details.
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
1982, 2009? -
Source
Report -
Both Western and Clarks?
N
| Count Type | Range | Max | Year |
|---|---|---|---|
| Max Adults | 101 to 500 | 120 | 1982 |
| Most Recent Adults | 0 | 0 | 2008/2009? |
| Max Nests | N/A | N/A | N/A |
| 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.
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
1982 -
Source
Management plan -
Both Western and Clarks?
N
| Count Type | Range | Max | Year |
|---|---|---|---|
| Max Adults | 101 to 500 | 120 | 1982 |
| Most Recent Adults | 101 to 500 | 120 | 1982 |
| 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, no breeding was confirmed but potential habitat was available. Sources are Prescott et al., 2018 and Alberta Environment and Parks, 2018.