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Nahanni Aster

Symphyotrichum nahanniense (Aster nahanniensis)

General Status Rank:

Sensitive

ELCODE:

PDASTE8940

Common Name:

Nahanni Aster

Scientific Name:

Symphyotrichum nahanniense (Aster nahanniensis)

Synonyms:

Aster nahanniensis

Naming References:

Google image search

Taxonomy

Group:

Vascular Plant

Kingdom:

Plantae

Phylum:

Magnoliophyta

Class:

Dicotyledoneae

Order:

Asterales

Family:

Asteraceae

References:

General Biology

Longevity

perennial

References:

Habitat

hot springs and moist areas (B036); very closely tied to soil moisture conditions at four hotsprings, only one of which is large in terms of numbers of individual plants (Wildmint).(H190)

References:

Distribution

Ecozones

Taiga Cordillera

References:

Distribution

2,834 km² (A408)Index of area of occupancy (IAO) =(Always report 2x2 grid value).=24 km² (A408)

Score:

D

References:

Number of Occurrences

1(B036); 4-5 sites all in Nahanni NPR - 13 Steps, Rabbitkettle (small mound), Old Pots,There appears to be a fifth site ( letter from D Tate to Semple of 22 Oct 2004). Six locations (A408)

Score:

B

References:

Area of Occupancy

Score:

-

Population

Population Size

# of individuals more than 5638 (E) (as per COSEWIC report A408),

Score:

E

References:

Threats

Threats

A bit of tectonic activity could easily alter and decrease the outflow of the springs at 13 Steps and Rabbitkettle (small mound). The Old Pots would be vulnerable to a decrease in creek flow.

Score:

B

References:

Intrinsic Vulnerability

References:

General Status Rank

Rank:

Sensitive

Status Rank Description:

Between 4-5 sites, all near hotsprings, in one area - Nahanni NPR. Endemic and rare in Canada. New taxonomic review consider it a species.

S Rank:

S3

Decision Process Description:

Reviewed from not assessed to May be at Risk in April 2006. Reviewed in 2010, no change.; Reviewed in 2015 by Marilyn Anions; modofoed from MBAR to sensitive (detialed assessment, moreinformation)

Last Updated:

October 17, 2017

Status Designations

NWT - Assessment by Species at Risk Committee

NWT SARC Assessment:

Not Applicable

Species under federal jurisdiction , All known location of the species are in a National Park

NWT - Species at Risk Legal Status

NWT Status Rank:

Not Applicable

Species under federal jurisdiction , All known location of the species are in a National Park

Canada – Assessment by Committee on the Status of Endangered Wildlife in Canada

COSEWIC Status:

Special Concern

2014; Designated Special Concern in May 2014. COSEWIC. 2013. COSEWIC assessment and status report on the Nahanni Aster Symphyotrichum nahanniense in Canada. Committee on the Status of Endangered Wildlife in Canada. Ottawa. xi + 39 pp.

References

Ecozones

McJannet CL, Argus GW and Cody WJ (1995) Rare Vascular Plants in the Northwest Territories. Canadian Museum of Nature Syllogeus 73:1-104. RWED Library Call #QK86.C3M3 - B036 Return

Habitat

McJannet CL, Argus GW and Cody WJ (1995) Rare Vascular Plants in the Northwest Territories. Canadian Museum of Nature Syllogeus 73:1-104. RWED Library Call #QK86.C3M3 - B036 Return
Anions, Oldham, Semple and Tate (2006) Nahanni Aster status - e-mail string on 7/04/2006. e-copy in folder, printed copy in binder - H190 Return
Owen E, JC Semple, BR Baum (2006) A multivariate morphometric analysis of the Symphyotrichum boréale-S. nahanniense-S. welshii complex (Asteraceae: Astereae). Can. J. Bot. (2006) 84(8): 1282–1297 http://rparticle.web-p.cisti.nrc.ca/rparticle/AbstractTemplateServlet?calyLang=eng&journal=cjb&volume=84&year=2006&issue=8&msno=b06-091 - A152 Return

Intrinsic Vulnerability

Anions, Oldham, Semple and Tate (2006) Nahanni Aster status - e-mail string on 7/04/2006. e-copy in folder, printed copy in binder - H190 Return
AOU (2006) Forty-seventh Supplement to the American ornithologist' Union Check-list of North American birds. Auk 123:926-936 - ASC9 Return
COSEWIC (2014) Committee on the Status of Endangered Wildlife in Canada ix + 39 pp - A408 Return

Longevity

Porsild AE, and Cody WJ (1980) Vascular Plants of Continental Northwest Territories, Canada. National Museums of Canada RWED Library Call #QK203.N7P6http://ia601004.us.archive.org/22/items/vascularplantsof00pors/vascularplantsof00pors.pdf - B003 Return

Naming

Porsild AE, and Cody WJ (1980) Vascular Plants of Continental Northwest Territories, Canada. National Museums of Canada RWED Library Call #QK203.N7P6http://ia601004.us.archive.org/22/items/vascularplantsof00pors/vascularplantsof00pors.pdf - B003 Return
NatureServe: An online encyclopedia of life [web application]. (2001) Version 1.4 . Arlington, Virginia, USA: Association for Biodiversity Information.. Available: http://www.natureserve.org/. (Accessed: June 29, 2001 - W018 Return
Brouillet, L., J.C. Semple, G.A. Allen, K. Chambers and S. Sundberg. (2006) Symphyotrichum Nees. pp. in press. In Flora North America Editorial Committee, eds.. Oxford University Press, New York. Flora of North America. Vol. 20. Asteraceae, Part 2. Astereae and Senecioneae. Copy in binder - HSC10 Return

NWT Known Subspecies

Anions, Oldham, Semple and Tate (2006) Nahanni Aster status - e-mail string on 7/04/2006. e-copy in folder, printed copy in binder - H190 Return

,

Owen E, JC Semple, BR Baum (2006) A multivariate morphometric analysis of the Symphyotrichum boréale-S. nahanniense-S. welshii complex (Asteraceae: Astereae). Can. J. Bot. (2006) 84(8): 1282–1297 http://rparticle.web-p.cisti.nrc.ca/rparticle/AbstractTemplateServlet?calyLang=eng&journal=cjb&volume=84&year=2006&issue=8&msno=b06-091 - A152 Return

Number of Occurrences

McJannet CL, Argus GW and Cody WJ (1995) Rare Vascular Plants in the Northwest Territories. Canadian Museum of Nature Syllogeus 73:1-104. RWED Library Call #QK86.C3M3 - B036 Return
Anions, Oldham, Semple and Tate (2006) Nahanni Aster status - e-mail string on 7/04/2006. e-copy in folder, printed copy in binder - H190 Return
COSEWIC (2014) Committee on the Status of Endangered Wildlife in Canada ix + 39 pp - A408 Return

Population Size

COSEWIC (2014) Committee on the Status of Endangered Wildlife in Canada ix + 39 pp - A408 Return

Range Extent

McJannet CL, Argus GW and Cody WJ (1995) Rare Vascular Plants in the Northwest Territories. Canadian Museum of Nature Syllogeus 73:1-104. RWED Library Call #QK86.C3M3 - B036 Return
COSEWIC (2014) Committee on the Status of Endangered Wildlife in Canada ix + 39 pp - A408 Return

Taxonomy

McJannet CL, Argus GW and Cody WJ (1995) Rare Vascular Plants in the Northwest Territories. Canadian Museum of Nature Syllogeus 73:1-104. RWED Library Call #QK86.C3M3 - B036 Return

Threats

Anions, Oldham, Semple and Tate (2006) Nahanni Aster status - e-mail string on 7/04/2006. e-copy in folder, printed copy in binder - H190 Return
AOU (2006) Forty-seventh Supplement to the American ornithologist' Union Check-list of North American birds. Auk 123:926-936 - ASC9 Return
COSEWIC (2014) Committee on the Status of Endangered Wildlife in Canada ix + 39 pp - A408 Return