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Western Painted Turtle (Chrysemys Picta Bellii)

Technical Summary

Technical Summary - Pacific Coast population

Chrysemys picta bellii

Western Painted Turtle - Pacific Coast population

Tortue peinte de l’Ouest

Range of Occurrence in Canada: BC (Vancouver Island, lower Fraser River valley southwest mainland)


Extent and Area Information

Extent of occurrence (EO) (km2)
GIS query of range based on records with geographic coordinates
4000 km2
Specify trend in EODeclining.
Are there extreme fluctuations in EO? 
Area of occupancy (AO) (km2) estimated from area of potential nesting sites
[explain source of information and calculation]
<10 km2
Specify trend in AOUnknown; suspect decline in most of range
Are there extreme fluctuations in AO?No
Number of known or inferred current locations6 localities
Specify trend in #Decline
Are there extreme fluctuations in number of locations?Unknown
Specify trend in area, extent or quality of habitatDeclining habitat


Population Information

Generation time (average age of parents in the population)35 years
Number of mature individualsProbably fewer than 250
Total population trendDecline
% decline over the last/next 10 years or 3 generationsUnknown
Are there extreme fluctuations in number of mature individuals?No
Is the total population severely fragmented?Probably is fragmented
Specify trend in number of populationsUnknown
Are there extreme fluctuations in number of populations?No
List populations with number of mature individuals in each:Unknown


Threats (actual or imminent threats to populations or habitats)

1. Vehicles kill females in search of nesting grounds; and this chronic increase in mortality will reduce populations of this long-lived species particularly since hatchling mortality is also high and few hatchlings survive to maturity.
2. Human population growth has led to rising pressures from development in or around wetlands.
3. Introduced Red-eared Slider turtles may be a threat.


Rescue Effect (immigration from an outside source)

USA: N5T5; common in adjacent states, rare in some extreme southwest U.S. pockets

(WA-S5, ID-S4, MT-S5, ND-SNR, MN-SNR, WI-S5, MI(UP)-S5, IL-S5, IW-S5, SD-S5, NB-S5, WY-S4, CO-S5, AZ-S1, TX-S1, KA-S5, OK-S2)
Is immigration known or possible?No
Would immigrants be adapted to survive in Canada?Yes
Is there sufficient habitat for immigrants in Canada?Yes
Is rescue from outside populations likely?No


Quantitative Analysis

None
 


Current Status

COSEWIC: New assessment / Endangered, April 2006
(S1 in Alberta, S3S4 in B.C., S4 in Saskatchewan, Manitoba, Ontario)


Status and Reasons for Designation

Status:
Endangered
Alpha-numeric code:
B1ab(i,ii,iii)+2ab(i,ii,iii); C2a(i); D1
Reasons for Designation:
There are few records from Vancouver Island and the mainland south coast/ Fraser River valley, and both regions are undergoing major loss of wetlands and a rapid increase in roads, development, and people. Recent searches of the lower Fraser River valley and of eastern Vancouver Island indicate the subspecies has declined in some of the handful of areas where it was previously observed.


Applicability of Criteria

Criterion A (Declining Total Population):
Not applicable.
Criterion B (Small Distribution, and Decline or Fluctuation):
The AO is less than 500 km2. It is known from only a few locations, and continuing decline can be inferred in habitat area and quality and number of individuals and both EO and AO.
Criterion C (Small Total Population Size and Decline):
There are certainly fewer than 2500 adults and continuing decline can be inferred because of increasing loss of habitat and increase in road traffic. No population contains more than 250 adult turtles.
Criterion D (Very Small Population or Restricted Distribution):
There are likely fewer than 250 adults.
Criterion E (Quantitative Analysis):
Not available.

 

Technical Summary - Intermountain - Rocky Mountain population

Chrysemys picta bellii

Western Painted Turtle - Intermountain - Rocky Mountain population

Tortue peinte de l’Ouest

Range of Occurrence in Canada: BC (Okanagan Valley, Kootenays)


Extent and Area Information

Extent of occurrence (EO) (km2)
GIS query of range based on records with geographic coordinates
32 000 km2
Specify trend in EODeclining.
Are there extreme fluctuations in EO?No
Area of occupancy (AO) (km2) based on the area of wetland available to turtles
[explain source of information and calculation]
<100 km2
Specify trend in AODeclining
Are there extreme fluctuations in AO?No
Number of known or inferred current locationsUnknown
Specify trend in #Probably declining
Are there extreme fluctuations in number of locations?No
Specify trend in area, extent or quality of habitatDeclining


Population Information

Generation time (average age of parents in the population)35 years
Number of mature individualsUnknown
Total population trendDeclining
% decline over the last/next 10 years or 3 generationsUnknown
Are there extreme fluctuations in number of mature individuals?No
Is the total population severely fragmented?Possibly. Certainly, fragmentation is increasing.
Specify trend in number of populationsDeclining
Are there extreme fluctuations in number of populations?No
List populations with number of mature individuals in each:Unknown


Threats (actual or imminent threats to populations or habitats)

1. Loss of wetlands to development, drainage for agriculture and increasing natural drought.
2. Increase in road networks and road traffic
3. Increase in abundance of predators (raccoons) of eggs and all age classes


Rescue Effect (immigration from an outside source)

USA: N5T5; common in adjacent states, rare in some extreme southwest U.S. pockets

(WA-S5, ID-S4, MT-S5, ND-SNR, MN-SNR, WI-S5, MI(UP)-S5, IL-S5, IW-S5, SD-S5, NB-S5, WY-S4, CO-S5, AZ-S1, TX-S1, KA-S5, OK-S2)
Is immigration known or possible?Possible
Would immigrants be adapted to survive in Canada?Yes
Is there sufficient habitat for immigrants in Canada?Possibly
Is rescue from outside populations likely?Unknown


Quantitative Analysis

None
 


Current Status

COSEWIC: New assessment / Special Concern,, April 2006
(S1 in Alberta, S3S4 in B.C., S4 in Saskatchewan, Manitoba, Ontario)


Status and Reasons for Designation

Status:
Special Concern
Alpha-numeric code:
NA
Reasons for Designation:
The number of turtles is likely small and declining because of extensive loss of wetland habitats and proliferation of roads.


Applicability of Criteria

Criterion A (Declining Total Population):
Not applicable.
Criterion B (Small Distribution, and Decline or Fluctuation):
Not applicable unless severely fragmented. Degree of fragmentation is unknown.
Criterion C (Small Total Population Size and Decline):
Not applicable because there are no estimates of abundance.
Criterion D (Very Small Population or Restricted Distribution):
Not applicable.
Criterion E (Quantitative Analysis):
Not available.

 

Technical Summary - Prairie/Western Boreal - Canadian Shield population

Chrysemys picta bellii

Western Painted Turtle - Prairie/Western Boreal - Canadian Shield population

Tortue peinte de l’Ouest

Range of Occurrence in Canada: southern AB, SK, MB, western ON


Extent and Area Information

Extent of occurrence (EO) (km2)
GIS query of range based on records with geographic coordinates
390 000 km2
Specify trend in EOLikely stable and large.
Are there extreme fluctuations in EO?No
Area of occupancy (AO) (km2)
[explain source of information and calculation]
Unknown, but likely substantial
Specify trend in AOStable
Are there extreme fluctuations in AO?No
Number of known or inferred current locationsUnknown
Specify trend in #Unknown
Are there extreme fluctuations in number of locations?No
Specify trend in area, extent or quality of habitatDecline


Population Information

Generation time (average age of parents in the population)35 years
Number of mature individualsUnknown
Total population trendUnknown-Stable
% decline over the last/next 10 years or 3 generationsUnknown
Are there extreme fluctuations in number of mature individuals?No
Is the total population severely fragmented?No
Specify trend in number of populationsLikely stable
Are there extreme fluctuations in number of populations?No
List populations with number of mature individuals in each:Unknown


Threats (actual or imminent threats to populations or habitats)

There may be loss of habitat in Saskatchewan and Alberta, especially if drought becomes a severe problem.


Rescue Effect (immigration from an outside source)

USA: N5T5; common in adjacent states, rare in some extreme southwest U.S. pockets

(WA-S5, ID-S4, MT-S5, ND-SNR, MN-SNR, WI-S5, MI(UP)-S5, IL-S5, IW-S5, SD-S5, NB-S5, WY-S4, CO-S5, AZ-S1, TX-S1, KA-S5, OK-S2)
Is immigration known or possible?Possibly
Would immigrants be adapted to survive in Canada?Yes
Is there sufficient habitat for immigrants in Canada?Yes
Is rescue from outside populations likely?Yes


Quantitative Analysis

None
 


Current Status

COSEWIC: New assessment / Not at Risk, April 2006
(S1 in Alberta, S3S4 in B.C., S4 in Saskatchewan, Manitoba, Ontario)


Status and Reasons for Designation

Status:
Not at Risk
Alpha-numeric code:
NA
Reasons for Designation:
Populations are numerous and widespread and there is an abundance of good habitat, especially in the eastern part of the range (Ontario).


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 available.