Keen's long-eared bat (Myotis keenii) COSEWIC assessment and status report: chapter 12
Technical Summary
Myotis keenii
Keen’s long-eared bat – Chauve-souris de Keen
Range of Occurrence in Canada:
British Columbia
Extent and Area information
extent of occurrence (EO)(km²)
268,830
specify trend (decline, stable, increasing, unknown)
Stable
are there extreme fluctuations in EO (> 1 order of magnitude)?
No
area of occupancy (AO) (km²)
Unknown
specify trend (decline, stable, increasing, unknown)
-
are there extreme fluctuations in AO (> 1 order magnitude)?
specify trend in # locations (decline, stable, increasing, unknown)
Unknown
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 if forest dependent
Population information
generation time (average age of parents in the population) (indicate years, months, days, etc.)
2 years
number of mature individuals (capable of reproduction) in the Canadian population (or, specify a range of plausible values)
Unknown
total population trend: specify declining, stable, increasing or unknown trend in number of mature individuals
Unknown
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)?
No
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)?
-
Threats (actual or imminent threats to populations or habitats)
- disturbance of hibernacula in caves by forest harvesting activity and recreational caving
- removal of tree roosts from forest harvesting
- disturbance of maternity colonies
Rescue Effect (immigration from an outside source)
Low
does species exist elsewhere (in Canada or outside)?
Yes
status of the outside population(s)?
SH
is immigration known or possible?
Yes
would immigrants be adapted to survive here?
Yes
is there sufficient habitat for immigrants here?
Yes
Quantitative Analysis
Insufficient data
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