BC Conservation Data Centre: Conservation Status Report
Coregonus artedi
Cisco
| Scientific Name: | Coregonus artedi |
|---|---|
| English Name: | Cisco |
| Provincial Status Summary | |
| Status: | S2 |
| Date Status Assigned: | May 10, 2010 |
| Date Last Reviewed: | March 15, 2019 |
| Reasons: | Known from one lake in the province. There are limited threats and population assumed to be large and stable. |
| Range | |
| Range Extent: | A = <100 square km |
| Range Extent Estimate (km2): | 48.3 |
| Range Extent Comments: |
Known only from Maxhamish Lake (48.3 sq. km surface ), in the Liard River drainage near the N.W.T. border. Area estimate from BC Ministry of Environment and Climate Change shapefile EAUBC_LAKES_ |
| Area of Occupancy Estimate (km2): | 60 |
| Linear Distance of Occupancy: | D = 21-100 |
| Area of Occupancy Comments: |
Same as range extent; Maxhamish Lake is 48.3 sq. km Grid cells (1km x 1km) were used to calculate the area of occuppancy. Any cell that was occupied (even partially) by this species was counted. |
| Occurrences & Population | |
| Number of Occurrences: | A = 1 - 5 |
| Comments: | Known from one site, Maxhamish Lake. |
| Number of Occurrences with Good Viability / Ecological Integrity: | B = 1 - 3 |
| Comments: |
High ecological inegrity; the one known site is located entirely within a Provincial Protected Area. It appears to have good viability. |
| Number of Occurrences Appropriately Protected & Managed: | B = 1 - 3 |
| Comments: | Located entirely within Maxhamish Lake Protected Area |
| Population Size: | U = Unknown |
| Comments: |
No records of sampling since 1999. Regularly found during gill netting in lake in late 1990's. |
| Threats (to population, occurrences, or area affected) | |
| Degree of Threat: | CD = Medium - low |
| Comments: | Maxhamish Lake is shallow (3-5 m) and will be susceptible to relatively rapid warming during extreme heat events, which are expected to become more frequent, intense and sustained due to global warming. Max sustained temperature tolerated by adult Cisco is about 20 C. Other threats are minimal at present, mainly due to the limited access to the lake. There is some fishing of Cisco. There is extensive mineral exploration and logging occurring in the north east of the province which means that access as well as potential pollutants may increase in time. |
| Trend (in population, range, area occupied, and/or condition of occurrences) | |
| Short-Term Trend: | G = Relatively Stable (<=10% change) |
| Comments: | DeGisi (2000) found there was no indication of a reduction in population; however he does qualify with "one reconnaissance inventory does not provide an adequate basis for quantitative statements about the abundance of fish populations or how this may have changed with time". |
| Long-Term Trend: | U = Unknown |
| Other Factors | |
| Intrinsic Vulnerability: | U=Unknown |
| Environmental Specificity: | U=Unknown |
| Other Rank Considerations: | |
| Information Gaps | |
| Research Needs: | Hourly measurements of of summer temperature from several locations/depths in Maxhamish Lake using data loggers. |
| Inventory Needs: | Maxhamish Lake has apparently not been sampled for this species since 1999; sampling to confirm continued presence and relative abundance is recommended. Other lakes in this drainage should also be surveyed. |
| Stewardship | |
| Protection: | In terms of provincial biological diversity, Maxhamish Lake is deserving of protection. |
| Management: | |
| Version | |
| Author: | Pearson, M. |
| Date: | May 21, 2010 |
| References | |
|
Beaty Biodiversity Museum (University of British Columbia). 2019. Fish Collection.
|
|
|
DeGisi, J.S. 1999. Reconnaissance (1:20 000) Fish and Fish Habitat Inventory of Maxhamish Lake (Watershed Code 211-107100-34800-01). BC Parks, Fort St. John
|
|
|
Fisheries Information Summary System - BC Geographic Warehouse (FISS-BCGW). 2019. Fish observation layer, WHSE_FISH.FISS_FISH_OBSRVTN_PNT_SP, in the BC Geograpic Warehouse derived from several databases. Maintained by BC Ministry of Environment Knowledge Management Branch, Ecosystem Information Section. Queried in 2019.
|
|
|
McPhail, J.D. 2007. The freshwater fishes of British Columbia. The University of Alberta Press, Edmonton, Alberta.
|
|
|
Pacific Climate Impacts Consortium (PCIC). 2012. Plan2Adapt Online Tool. Pacific Climate Impacts Consortium, University of Victoria, Victoria, B.C.
|
|
|
Royal British Columbia Museum. 2019. Ichthyology Collection. Electronic database.
|
|
|
World Wildlife Fund Canada. 2019. Watershed Report. Accessed February 2019.
|
|
Please visit the website Conservation Status Ranks for information on how the CDC determines conservation status ranks. For global conservation status reports and ranks, please visit the NatureServe website http://www.natureserve.org/.
Suggested Citation:
B.C. Conservation Data Centre. 2010. Conservation Status Report: Coregonus artedi. B.C. Minist. of Environment. Available: https://a100.gov.bc.ca/pub/eswp/ (accessed Jan 9, 2025).