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Canadian Species at Risk, November 2002
The lists that follow are organized by status category and then by taxonomic group. An explanation of the symbols and abbreviations is provided below. For each species, the information provided includes the common name, scientific name, population name, and range of occurrence in Canada(by province/territory/ocean). The most recent date of examination by COSEWIC is shown, and symbols provide information on the outcome of status re-examinations (e.g., uplisting, downlisting) and the basis of re-examination for species evaluated against the new quantitative criteria. For birds, range of occurrence includes the Canadian breeding and wintering distribution.
The first COSEWIC "Endangered Species List" was issued in 1978. In 1990, it was decided that all species considered by COSEWIC should be listed even if the species were "not at risk" or "data deficient." Therefore, this document is divided into three separate lists. List 1 includes Species designated as Extinct, Extirpated, Endangered, Threatened or Special Concern.
List 2 includes species examined and designated in the Not at Risk category. List 3 includes species examined and designated in the Data Deficient category because of insufficient scientific information. All three lists include the geographical occurrence and most recent date of examination.
Explanation of symbols
Re-assessments and new species
3 Species placed in a higher risk category (uplisted) after re-examination on the date shown.
4 Species placed in a lower risk category (downlisted) after re-examination on the date shown.
<> Species stays in the same risk category (no change) after re-examination on the date shown.
6 Species moved to the Not at Risk category from a risk category (de-listed) on the date shown.
0 Species moved to the Data Deficient Category from a risk category, or to a risk category from the Data Deficient Category (changed), on the date shown.
(no arrow) New species examined on the date shown.
Evaluation with COSEWIC's new quantitative criteria
COSEWIC has recently begun using quantitative criteria to assess species' risk of extinction. These criteria were adapted from the criteria used by the World Conservation Union (IUCN) and have been used by COSEWIC since May 2002.
1 or 1+ Assessment based on a new status report or an update status report. A plus sign (+) indicates the report has an addendum.
2 or 2+ Species re-assessed using an existing status report. A plus sign (+) indicates the report has an addendum or that the report has been modified slightly.
Geographical occurrence abbreviations
NS Nova Scotia
BC British Columbia
NT Northwest Territories
YT Yukon Territory
NB New Brunswick
NL Newfoundland and Labrador
PE Prince Edward Island
List 1. Species designated in the five "risk" categories, with range of occurrence (by province/territory/ocean) and year of designation. For extinct and extirpated species, the historical range of occurrence and the approximate date of disappearance are shown.
EXTIRPATED CATEGORY (21)
|Extirpation Date||Assessment Date|
|1 <>||Bear, Grizzlyion||Ursus arctos||Prairie population||AB SK MB||1880s||May 2002|
|2 <>||Ferret, Black-footed||Mustela nigripes||AB SK MB||1974||May 2000|
|2 <>||Walrus, Atlantic||Odobenus rosmarus rosmarus||Northwest Atlantic image populationage||Atlantic Ocean||mid 19th century||May 2000|
|2 <>||Whale, Grey||Atlantic population||Atlantic Ocean||before end of 1800s||May 2000|
|2 <>||Prairie-Chicken, Greater||Tympanuchus cupidog, app||AB SK MB ON||last reported in 1987 in Saskatchewan||May 2000|
|2 <>||Sage-grouse phaios subspecies, Greaterag||Centrocercus urophasianus phaios||BC||not observed since1960s||May 2000|
|2 <>||Lizard, Pygmy Short-horned||Phrynosoma douglassii douglassii||British Columbia populationd.ms-excel||BC||last reported in 1898, near Osoyoos, BC||May 2000|
|1||Rattlesnake, Timber||Crotalus horridusO||ON||1941||May 2001|
|1||Snake, Pacific Gopher||Pituophis catenifer catenifer|
|BC||not observed since 1957||May 2002|
|1||Turtle, Pacific Pondê:i||Clemmys marmorataNIDQSRT||BC||not observed since 1959||May 2002|
|1||Salamander, Tiger||Ambystoma tigrinum||Great Lakes population||ON||not observed since 1915||Nov 2001|
|2 <>||Chub, Gravel||Erimystax x-punctatus||ON||last reported in 1958, Thames River||May 2000|
|2 <>||Paddlefish||Polyodon spathula||ON||1917||May 2000|
|2 <>||Blue, Karner||Lycaeides melissa samuelis||ON||1991||May 2000|
|2 <>||Elfin, Frostede||Callophrys irus||ON||1988||May 2000|
|2 <>||Marble, Island||Euchloe ausonides||BC||before 1910||May 2000|
|1||Snail, Puget Oregonian||Cryptomastix devia||BC||not observed since 1905||Nov 2002|
|2 <>||Wedgemussel, Dwarf||Alasmidonta heterodon||NB||1968||May 2000|
|2 <>||Spring Blue-eyed Mary||Collinsia verna||ON||not observed since1954||May 2000|
|2 <>||Tick-trefoil, Illinois||Desmodium illinoense||ON||not observed since 1888||May 2000|
|1||Moss, Incurved Grizzled||Ptychomitrium incurvum||ON||1828||Nov 2002|
- Date Modified: