Lake sinclair drawdown schedule 2020 update#

This small, nonparasitic lamprey has a very limited distribution in the Winnipeg River watershed in southeastern Manitoba. Northern Brook Lamprey - Saskatchewan - Nelson River populations Assessment summary - November 2020 - Northern Brook Lamprey - Saskatchewan - Nelson River populations Status re-examined and confirmed in November 2020.

Lawrence populations” unit was designated Special Concern. When the species was split into separate units in April 2007, the “Great Lakes - Upper St. The species was considered a single unit and designated Special Concern in April 1991. If these threats are not managed effectively, this species may become at greater risk of extinction. However, it may be exposed to additional threats such as pollution from agricultural effluents and increased temperatures and decreased water flows related to climate change and water control structures. The overall population is not known to be declining currently. Barriers that exclude Sea Lamprey protect this species from exposure to lampricides in upper reaches of many tributaries, and it is still relatively abundant in untreated streams. In the Great Lakes basin, most of its Canadian range, about half of the streams it is known to inhabit are subjected to ongoing chemical treatment for Sea Lamprey control, which causes significant mortality to larval lampreys. This small, nonparasitic lamprey is found in streams throughout the Laurentian Great Lakes basin and in southwestern Quebec. Northern Brook Lamprey - Great Lakes - Upper St. Northern Brook Lamprey and Silver Lamprey - Photo credit: Fraser Neave.ĬOSEWIC assessment summary Assessment summary - November 2020 - Northern Brook Lamprey - Great Lakes - Upper St. This report was overseen and edited by Nicholas Mandrak, Co-Chair of the COSEWIC Freshwater Fishes Specialist Subcommittee.Į-mail: disponible en français sous le titre Évaluation et Rapport de situation du COSEPAC sur la Lamproie du Nord ( Ichthyomyzon fossor) (populations des Grands Lacs et du haut Saint-Laurent et populations de la rivière Saskatchewan et du fleuve Nelson) et la Lamproie argentée ( Ichthyomyzon unicuspis) (populations des Grands Lacs et du haut Saint-Laurent, populations de la rivière Saskatchewan et du fleuve Nelson et populations du sud de la baie d’Hudson et de la baie James) au Canada. Ottawa. 1-21 pp.ĬOSEWIC would like to acknowledge Margaret Docker, Justin Budyk, Doug Watkinson and Anthony Wightman for writing the status report on Northern Brook Lamprey, Ichthyomyzon fossor, and Silver Lamprey, Ichthyomyzon unicuspis in Canada, prepared under contract with Environment and Climate Change Canada. Committee on the Status of Endangered Wildlife in Canada. COSEWIC status report on the northern brook lamprey Ichthyomyzon fossor in Canada. Lawrence populations and Saskatchewan - Nelson population) in Canada.

Lake sinclair drawdown schedule 2020 update#

COSEWIC assessment and update status report on the northern brook lamprey Ichthyomyzon fossor (Great Lakes - Upper St. ( Species at risk public registry).ĬOSEWIC 2007. Lawrence populations, Saskatchewan - Nelson River populations and Southern Hudson Bay - James Bay populations) in Canada. Lawrence populations and Saskatchewan - Nelson River populations) and the Silver Lamprey Ichthyomyzon unicuspis (Great Lakes - Upper St. COSEWIC assessment and status report on the Northern Brook Lamprey Ichthyomyzon fossor (Great Lakes - Upper St. This report may be cited as follows:ĬOSEWIC. 2020. COSEWIC status reports are working documents used in assigning the status of wildlife species suspected of being at risk.