Greater sage-grouse (Centrocercus urophasianus) COSEWIC assessment and status report: chapter 11
Technical Summary: Greater Sage-Grouse phaios subspecies
Centrocercus urophasianus phaios
Greater Sage-Grouse phaios subspecies – Tétras des armoises de la sous-espèce phaios
Range of Occurrence in Canada:
formerly British Columbia
Extent and Area Information
Extent of occurrence (EO) (km²) :
0 km²
Specify trend in EO
Are there extreme fluctuations in EO?
0
Area of occupancy (AO) (km²) :
0 km²
Specify trend in AO :
Not applicable in Canada; declining in USA
Are there extreme fluctuations in AO?
No
Number of known or inferred current locations
0
Specify trend in #
Are there extreme fluctuations in number of locations?
Specify trend in area, extent or quality of habitat
Population Information
Generation time (average age of parents in the population) :
Ca. 3 years
Number of mature individuals :
0
Total population trend:
% decline over the last/next 10 years or 3 generations.
Are there extreme fluctuations in number of mature individuals?
Is the total population severely fragmented?
Specify trend in number of populations
Are there extreme fluctuations in number of populations?
List populations with number of mature individuals in each:
Threats (actual or imminent threats to populations or habitats)
Habitat loss and fragmentation.
Rescue Effect (immigration from an outside source)
Status of outside population(s)?
USA: [Washington] population small and declining
Is immigration known or possible?
No
Would immigrants be adapted to survive in Canada?
Yes
Is there sufficient habitat for immigrants in Canada?
Probably not
Is rescue from outside populations likely?
No
Quantitative Analysis
-
Current Status
COSEWIC: Extirpated (2000 and 2008)
Status and Reasons for Designation
Status: Extirpated
Alpha-numeric code: Not applicable
Reasons for Designation: This subspecies has not been seen in its former range in the Okanagan Valley of British Columbia for about a century.
Applicability of Criteria
- Criterion A (Declining Total Population): Not applicable.
- Criterion B (Small Distribution, and Decline or Fluctuation): Not applicable.
- Criterion C (Small Total Population Size and Decline): Not applicable.
- Criterion D (Very Small Population or Restricted Distribution): Not applicable.
- Criterion E (Quantitative Analysis): Not applicable.
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