Short-tailed albatross (Phoebastria albatrus) COSEWIC status report: chapter 14
Phoebastria albatrus
Short-tailed Albatross
Albatros à queue courte
British Columbia/Pacific Ocean
Extent and Area Information
Extent of occurrence (EO) (km2) (area of Canadian Pacific coastal waters) |
423 260 km2 |
Specify trend (decline, stable, increasing, unknown) | stable |
Are there extreme fluctuations in EO (> 1 order of magnitude)? | unlikely |
Area of occupancy (AO) (km2) (area of Canadian Pacific coastal waters) |
423 260 km2 |
Specify trend (decline, stable, increasing, unknown) | stable |
Are there extreme fluctuations in AO (> 1 order magnitude)? | No |
Number of known or inferred current locations | n.a. |
Specify trend in # locations (decline, stable, increasing, unknown) | n.a. |
Are there extreme fluctuations in # locations (>1 order of magnitude)? | n.a. |
Specify trend in area, extent or quality of habitat | stable |
Population Information
Generation time (average age of parents in the population) |
26 years |
Number of mature individuals | 614 in world, about 50 are estimated to use Canadian waters annually |
Total population trend | declined from 5 million birds to near extinction (<400 birds, 99.99%) early 20th century, now steadily increasing |
% decline over the last/next 10 years or 3 generations | n.a. |
Are there extreme fluctuations in number of mature individuals? | no |
Is the total population severely fragmented? | no |
Specify trend in number of populations | n.a. |
Are there extreme fluctuations in number of populations? | n.a. |
List populations with number of mature individuals in each | n.a. |
Threats (actual or imminent threats to populations or habitats)
- incidental mortality in the longline fishery
- mortality in association with oil spills
- on the breeding grounds the major threat is from volcanic eruptions
- previously hunted to near extinction early in 20th Century
- mortality in association with oil spills
- on the breeding grounds the major threat is from volcanic eruptions
- previously hunted to near extinction early in 20th Century
Rescue Effect (immigration from an outside source): n.a.
Status of outside population(s)? USA: Endangered Alaska: Endangered CITES: Appendix 1 World Conservation Union: Vulnerable |
|
Is immigration known or possible? | n.a. |
Would immigrants be adapted to survive in Canada? | |
Is there sufficient habitat for immigrants in Canada? | |
Is rescue from outside populations likely? | n.a. |
Quantitative Analysis
n.a.
Current Status
COSEWIC: has not been previously assessed
Status and Reason for Designation
Status: Threatened |
Criteria met: D1+2 |
Reason for designation: This species was once an abundant seabird along the coast of BC but its numbers declined to near extinction in early 20th Century. Numbers are now slowly increasing. Albatross populations in general are very sensitive to incidental catch by commercial fisheries and oil spills; while these impacts have not been documented for this species in Canadian waters, they pose a significant potential threat. |
Applicability of Criteria
Criterion A (Declining Total Population):
Not applicable; population declined catastrophically 100 years ago, but began increasing about 50 years (2 generations ago).
Not applicable; population declined catastrophically 100 years ago, but began increasing about 50 years (2 generations ago).
Criterion B (Small Distribution, and Decline or Fluctuation):
Not applicable; there is a small distribution in terms of breeding sites, but population is now increasing after catastrophic decline 100 years ago.
Not applicable; there is a small distribution in terms of breeding sites, but population is now increasing after catastrophic decline 100 years ago.
Criterion C (Small Total Population Size and Decline):
Not applicable; population did decline to very few individuals 50 – 100 years ago, but is now increasing.
Not applicable; population did decline to very few individuals 50 – 100 years ago, but is now increasing.
Criterion D (Very Small Population or Restricted Distribution):
Meets D1 and D2 criteria for Threatened (less than 1000 breeding individuals at less than 5 sites)
Meets D1 and D2 criteria for Threatened (less than 1000 breeding individuals at less than 5 sites)
Criterion E (Quantitative Analysis):
None done.
None done.
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