Silver hair moss (Fabronia pusilla) COSEWIC assessment and status report: chapter 12
Technical Summary
Fabronia pusilla
Silver-Hair Moss – Fabronie naine
Range of Occurrence in Canada:
BC
Extent and Area information
extent of occurrence (EO) (km²)
< 0.1 km²
specify trend (decline, stable, increasing, unknown) :
unknown
are there extreme fluctuations in EO (> 1 order
of magnitude)?
of magnitude)?
unknown
area of occupancy (AO) (km²) :
< 0.1 km²
specify trend (decline, stable, increasing, unknown) :
unknown
are there extreme fluctuations in AO (> 1 order
magnitude)?
magnitude)?
unknown
number of extant locations :
1
specify trend in # locations (decline, stable, increasing, unknown) :
unknown
are there extreme fluctuations in # locations
(> 1 order of magnitude)?
(> 1 order of magnitude)?
unknown
habitat trend: specify declining, stable,
increasing or unknown trend in area, extent
or quality of habitat :
increasing or unknown trend in area, extent
or quality of habitat :
stable
Population information
generation time (average age of parents in the population) (indicate years, months, days, etc.)
>3 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) :
or 3 generations, whichever is greater (or specify
if for shorter time period) :
unknown
are there extreme fluctuations in number of
mature individuals (> 1 order of magnitude)?
mature individuals (> 1 order of magnitude)?
unknown
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)?
unknown
list each population and the number of mature individuals in each :
unknown
specify trend in number of populations (decline, stable, increasing, unknown) :
unknown
are there extreme fluctuations in number of populations (>1 order of magnitude)?
unknown
Threats (actual or imminent threats to populations or habitats) [add rows as needed]
Rescue Effect (immigration from an outside source)
does species exist elsewhere (in Canada or outside)?
yes
status of the outside population(s)?
secure
is immigration known or possible?
possible
would immigrants be adapted to survive here?
yes
is there sufficient habitat for immigrants here?
yes
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