Pacific pond turtle (Clemmys marmorata) COSEWIC assessment and status report: chapter 12
Technical Summary
Clemmys marmorata
Pacific pond turtle – Tortue de l’Ouest
Range of Occurrence in Canada:
Previously found in British Columbia
Extent and Area information
extent of occurrence (EO) (km²) :
0 km²
specify trend (decline, stable, increasing, unknown):
N/A
are there extreme fluctuations in EO (> 1 order of magnitude)?
No
area of occupancy (AO) (km²) :
0 km²
specify trend (decline, stable, increasing, unknown) :
N/A
are there extreme fluctuations in AO (> 1 order magnitude)?
No
number of extant locations :
0
specify trend in # locations (decline, stable, increasing, unknown)
N/A
are there extreme fluctuations in # locations (>1 order of magnitude)?
No
habitat trend: specify declining, stable, increasing or unknown trend in area, extent or quality of habitat :
Declining
Population information
generation time (average age of parents in the population) (indicate years, months, days, etc.)
>10 yrs
number of mature individuals (capable of reproduction) in the Canadian population (or, specify a range of plausible values) :
0
total population trend: specify declining, stable, increasing or unknown trend in number of mature individuals :
N/A
if decline, % decline over the last/next 10 years or 3 generations, whichever is greater (or specify if for shorter time period).
--
are there extreme fluctuations in number of mature individuals (> 1 order of magnitude)?
--
is the total population severely fragmented (most individuals found within small and relatively isolated (geographically or otherwise) populations between which there is little exchange, i.e., < 1 successful migrant / year)?
Yes
list each population and the number of mature individuals in each.
--
specify trend in number of populations (decline, stable, increasing, unknown).
--
are there extreme fluctuations in number of populations (>1 order of magnitude)?
No
Threats (actual or imminent threats to populations or habitats)
- habitat loss and alteration
- population fragmentation
- little or no recruitment
- predation on young (by raccoon and introduced bullfrog)
- commercial harvesting
Rescue Effect (immigration from an outside source)
does species exist elsewhere (in Canada or outside)?
In USA
status of the outside population(s)?
At risk
is immigration known or possible?
Unknown, possible
would immigrants be adapted to survive here?
Unknown
is there sufficient habitat for immigrants here?
No
Quantitative Analysis
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