Rigid Apple Moss
Scientific Name: Bartramia aprica
Other/Previous Names: Apple Moss,Bartramia stricta
Taxonomy Group: Mosses
COSEWIC Range: British Columbia
COSEWIC Assessment Date and Status Change: November 2009
COSEWIC Status: Endangered
COSEWIC Status Criteria: B1ab(iii)+2ab(iii)
COSEWIC Reason for Designation: This species is found in western North America in British Columbia, Washington and California. In BC, the species occurs at 5 sites on southern Vancouver Island and adjacent Gulf Islands where the species is restricted to Garry Oak ecosystems. The species grows on either well-drained, shallow, compacted soil, or on meta-igneous rock outcrop faces. The species is closely associated with seepage areas. Threats include weed invasion, trampling, changes in land use that affect grazing patterns, and urbanization of Garry Oak ecosystems.
COSEWIC History of Status Designation: Designated Threatened in April 1997. Status re-examined and designated Endangered in May 2000 and November 2009.
SARA Status: Schedule 1, Endangered
Date of Listing (yyyy-mm-dd): 2003-06-05
Please note that this information is provided for general information purposes only. For the most up to date and accurate list of species listed under the Species at Risk Act, please see the Justice Laws Website.
Image of Rigid Apple Moss
The Rigid Apple Moss is a small, pale yellow-green moss, 1 to 3 cm high. It is characterized by ribbed globular capsules known as sporangium or spore-holding sacks. The leaves are straight and erect when wet or dry. It resembles the cone shape of a pencil tip.
Distribution and Population
The species grows on low elevations in Mediterranean-like climates. In Canada, suitable habitat is found only on eastern Vancouver Island and on some of the adjacent Gulf Islands, the northern limit of the species' range. Otherwise, it is found in northern California. One hundred and eighty three patches varying in size from one square centimetre to four square metres have been recently found in the Nanaimo area of southwestern British Columbia. Whether this represents an increase or decline in abundance is not known.
The Nanaimo site is a steep, dry, south-facing slope dominated by Garry Oak with some Douglas Fir and Arbutus. Micro-habitats include well-humidified soil that appears to be disturbed and is relatively free of grasses and other vascular plants or lichens; and thin soil within crevices on rock outcrops. The species may also grow directly on rocks.
The reproductive organs of both sexes are in close proximity on a single plant. Spores are the primary means of dispersal and reproduction. The Canadian population is producing spores regularly and successfully.
The major threat to the Rigid Apple Moss is urban development, which has altered or destroyed suitable habitat.
The Rigid Apple Moss is protected under the federal Species at Risk Act (SARA). More information about SARA, including how it protects individual species, is available in the Species at Risk Act: A Guide.
Provincial and Territorial Protection
Status of Recovery Planning
Recovery Strategies :
Name Recovery Strategy for the Rigid Apple Moss (Bartramia stricta Bridel) in Canada
Status Final posting on SAR registry
BC Bryophyte Recovery Team
Brenda Costanzo - Chair/Contact - Government of BC
Phone: 250-387-9611 Fax: 250-356-9145 Send Email
Garry Oak Ecosystems Recovery Team
Conan Webb - Chair/Contact - Parks Canada
Phone: 250-478-5153 Send Email
PLEASE NOTE: Not all COSEWIC reports are currently available on the SARA Public Registry. Most of the reports not yet available are status reports for species assessed by COSEWIC prior to May 2002. Other COSEWIC reports not yet available may include those species assessed as Extinct, Data Deficient or Not at Risk. In the meantime, they are available on request from the COSEWIC Secretariat.
10 record(s) found.
- COSEWIC Status Reports (1 record(s) found.)
- COSEWIC Assessments (1 record(s) found.)
- Response Statements (1 record(s) found.)
- Recovery Strategies (1 record(s) found.)
- COSEWIC Annual Reports (1 record(s) found.)
- Permits and Related Agreements (3 record(s) found.)
- Consultation Documents (1 record(s) found.)
- Exceptions (1 record(s) found.)
COSEWIC Status Reports
Response Statement - Rigid Apple Moss (2010-12-02)This species is found in western North America in British Columbia, Washington and California. In BC, the species occurs at 5 sites on southern Vancouver Island and adjacent Gulf Islands where the species is restricted to Garry Oak ecosystems. The species grows on either well-drained, shallow, compacted soil, or on meta-igneous rock outcrop faces. The species is closely associated with seepage areas. Threats include weed invasion, trampling, changes in land use that affect grazing patterns, and urbanization of Garry Oak ecosystems.
COSEWIC Annual Reports
COSEWIC Annual Report - 2010 (2010-09-03)Under Canada’s Species At Risk Act (SARA), the foremost function of COSEWIC is to “assess the status of each wildlife species considered by COSEWIC to be at risk and, as part of the assessment, identify existing and potential threats to the species”. During the past year, COSEWIC held two Wildlife Species Assessment Meetings and reviewed the status of 79 wildlife species (species, subspecies, populations). During the meeting of November 2009, COSEWIC assessed or reviewed the classification of the status of 28 wildlife species. COSEWIC assessed or reviewed the classification of an additional 51 wildlife species (species, subspecies and populations) during their April 2010 meeting. For species already found on Schedule 1 of SARA, the classification of 32 species was reviewed by COSEWIC and the status of the wildlife species was confirmed to be in the same category (extirpated - no longer found in the wild in Canada but occurring elsewhere, endangered, threatened or of special concern). The wildlife species assessment results for the 2009-2010 reporting period include the following: Extirpated: 6 Endangered: 39 Threatened: 16 Special Concern: 17 Data Deficient: 1 This report transmits to the Minister the status of 46 species newly classified as extirpated, endangered, threatened or of special concern, fulfilling COSEWIC’s obligations under SARA Section 24 and 25. A full detailed summary of the assessment for each species and the reason for the designation can be found in Appendix I of the attached report. Since its inception, COSEWIC has assessed 602 wildlife species in various risk categories, including 262 Endangered, 151 Threatened, 166 Special Concern and 23 Extirpated. In addition, 13 wildlife species have been assessed as Extinct. Also, to date, 46 wildlife species have been identified by COSEWIC as Data Deficient and 166 wildlife species were assessed as Not at Risk. This year has been a particularly productive year for COSEWIC’s Aboriginal Traditional Knowledge (ATK) Subcommittee. In April 2010 COSEWIC approved the Aboriginal Traditional Knowledge Process and Protocol Guidelines, providing clear and agreed principles for the gathering of Aboriginal Traditional Knowledge to carry out COSEWIC functions as required under Section 15(2) of SARA (See Appendix III of the attached report). We are grateful for the rich and enthusiastic contribution made by community elders and experts in helping the ATK Subcommittee prepare the ATK protocols.