Scientific Name: Coreopsis rosea
Taxonomy Group: Vascular Plants
COSEWIC Range: Nova Scotia
COSEWIC Assessment Date and Status Change: November 2012
COSEWIC Status: Endangered
COSEWIC Status Criteria: B1ab(iii,v)+2ab(iii,v)
COSEWIC Reason for Designation:
This showy perennial lake and river shore plant has a restricted global range with a disjunct distribution limited to southernmost Nova Scotia. There is a concern regarding potential widespread and rapid habitat degradation due to recent increases in levels of phosphorus in lakes, tied to a rapidly growing mink farming industry. Though the population size is now known to be larger than previously documented due to greatly increased survey effort, the species is also at risk due to the continuing impacts associated with shoreline development, and historical hydro-development.
COSEWIC History of Status Designation: Designated Endangered in April 1984. Status re-examined and confirmed Endangered in April 1999, May 2000, and November 2012.
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 Pink Coreopsis
The Pink Coreopsis is a perennial herb. The flowers grow at the end of stalks which measure 20 to 60 cm in height. The daisy-like, composite flowers are formed of pink (outer) and yellow (inner) flowers. The capsules measure about 2 mm in length.
Distribution and Population
Pink Coreopsis occurs along ten eastern seabord states in the U.S.A. and in southwestern Nova Scotia in Canada. The Nova Scotia sites are on Salmon, Wilsons and Bennetts lakes in the Tusket River valley. The plant has been extirpated from three other lakes in Nova Scotia, due primarily to the establishment of reservoirs for generation of hydroelectricity. More than 5000 plants (flowering and vegetative) were counted recently at Salmon Lake. The counts for the other two lakes date from 1984, when less than 1000 flowering plants were found. It is thought that ongoing cottage development and all-terrain vehicle activity have probably impacted on these populations during the intervening years.
Pink Coreopsis occurs on infertile, gently sloping sand, gravel or cobblestone lake shorelines. Naturally occurring environmental stresses and disturbances, such as periodic water level fluctuations, wave action and/or ice scour, maintain a sparsely vegetated open habitat and prevent the establishment of more aggressive plants.
This species reproduces primarily by asexual means, in the form of subterranean runners or stolons. Sexual reproduction is sporadic in Nova Scotia, where the plant is at the northern limit of its range. Low water levels are required for flowering to occur. Flowers bloom from mid-July to mid-September, and the seeds mature in late August and September. The relatively small number of seeds produced limits the ability of the species to recover from severe habitat disturbance.
Pink Coreopsis is naturally limited by the scarcity of its specific habitat, and by its low production of seeds. The destruction or modification of habitat due to cottage development, and trampling of plants by off-road vehicles and recreational activities, are major threats for Pink Coreopsis. The control of water levels, especially through the construction of dams and wharves, interferes with the natural processes necessary to the survival of Pink Coreopsis. Potential threats include eutrophication of lakewaters due to runoff of various types (e.g., septic, agricultural, forestry, industrial), which would eventually increase shoreline fertility and encourage invasion by more aggressive plant species, and possible re-zoning of shorelines by municipalities for recreational development.
The Pink Coreopsis 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.
The Pink Coreopsis is protected by the Nova Scotia Endangered Species Act. Under this Act, it is prohibited to kill, harm, or collect this species. A large population occurs within the provincial Tusket River Nature Reserve.
Provincial and Territorial Protection
Status of Recovery Planning
Recovery Strategies :
Name Recovery Strategy and Management Plan for Multiple Species of Atlantic Coastal Plain Flora in Canada
Status Final posting on SAR registry
Atlantic Coastal Plain Flora Recovery Team
Sherman Boates - Chair/Contact - Government of Nova Scotia
Phone: 902-679-6146 Fax: 902-679-6176 Send Email
Samara Eaton - Chair/Contact - Environment Canada
Phone: 506-364-5060 Fax: 506-364-5062 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.
8 record(s) found.
- COSEWIC Status Reports (1 record(s) found.)
- Response Statements (1 record(s) found.)
- Recovery Strategies (2 record(s) found.)
- Action Plans (1 record(s) found.)
- Management Plans (1 record(s) found.)
- COSEWIC Annual Reports (1 record(s) found.)
- Residence Description (1 record(s) found.)
COSEWIC Status Reports
Response Statement - Pink Coreopsis (2013-12-18)This showy perennial lake and river shore plant has a restricted global range with a disjunct distribution limited to southernmost Nova Scotia. There is a concern regarding potential widespread and rapid habitat degradation due to recent increases in levels of phosphorus in lakes, tied to a rapidly growing mink farming industry. Though the population size is now known to be larger than previously documented due to greatly increased survey effort, the species is also at risk due to the continuing impacts associated with shoreline development, and historical hydro-development.
COSEWIC Annual Reports
COSEWIC Annual Report – 2012-2013 (2013-09-24)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”. COSEWIC held two Wildlife Species Assessment Meetings in this reporting year (October, 2012 to September 2013) from November 25 to November 30, 2012 and from April 28 to May 3, 2013. During the current reporting period, COSEWIC assessed the status or reviewed the classification of 73 wildlife species. The wildlife species assessment results for the 2012-2013 reporting period include the following: Extinct: 0 Extirpated: 2 Endangered: 28 Threatened: 19 Special Concern: 19 Data Deficient: 4 Not at Risk: 1 Total: 73 Of the 73 wildlife species examined, COSEWIC reviewed the classification of 50 species that had been previously assessed. The review of classification for 26 of those species resulted in a confirmation of the same status as the previous assessment.
Residence Rationale - Pink Coreopsis (2007-01-02)Individual Pink Coreopsis plants do not appear to use a dwelling place similar to a nest or den, and therefore do not qualify for having a residence. There would be no additional legal protection not already afforded by protection of the individual and its critical habitat.