Banded cord-moss (Entosthodon fascicularis) COSEWIC assessment and status report: chapter 14
Technical Summary
Entosthodon fascicularis
Area of Occurrence in Canada: BC
Extent and Area Information
Extent of occurrence (EO)(km2)
< 800 km2
specify trend (decline, stable, increasing, unknown)
unknown
are there extreme fluctuations in EO (>1 order of magnitude)?
No
area of occupancy (AO)(km2)
<1 km2
specify trend (decline, stable, increasing, unknown)
unknown
are there extreme fluctuations in AO (>1 order magnitude)?
unknown
number of extant locations
15 recent sites (since 1969)
specify trend in # locations (decline, stable, increasing, unknown)
Not known
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
Stable to declining (e.g., Garry oak habitats)
Population Information
generation time (average age of parents in the population) (indicate years, months, days, etc.)
unknown, but species may be a short-lived annual/biennual most visible for short periods in spring and early summer when capsules are present.
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)
unknown
are there extreme fluctuations in number of 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)?
No
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)
- Disturbance from recreational activities
- Urban development
- Climate change
Rescue Effect (immigration from an outside source)
does species exist elsewhere (in Canada or outside)?
yes - USA
status of the outside population(s)?
globally secure, but listed S1 in Oregon
is immigration known or possible?
unknown
would immigrants be adapted to survive here?
evidently
is there sufficient habitat for immigrants here?
evidently
Status and Reasons for Designation
Status: Special Concern
Alpha-numeric code: Not applicable
Reasons for Designation: This rare species is endemic to western North America. Almost all Canadian populations of this moss occur in the threatened Garry Oak habitat of southwestern British Columbia. Should habitat destruction continue at the present rate, the species will become increasingly vulnerable.
Applicability of Criteria
Criterion A (Declining Total Population):
Data are not available.
Criterion B (Small Distribution, and Decline or Fluctuation):
Area of occupancy is less than 500 km2; however, the species exists at 15 sites and is not severely fragmented.
Criterion C (Small Total Population Size and Decline):
Data are not available on number of individuals.
Criterion D (Very Small Population or Restricted Distribution):
Data are not available on number of individuals.
Criterion E (Quantitative Analysis):
Not applicable.