Science Response 2019/025
Population Status Update for the Northern Resident Killer Whale (Orcinus orca) in 2018
Context
Northern Resident Killer Whales (NRKW) are currently designated as 'Threatened' in Canada under the Species at Risk Act, due to their small population size, low reproductive rate, and the existence of several anthropogenic threats that are likely to impede their on-going population recovery or cause future population declines (DFO 2018). Population censusing by photo-identification is a key research activity outlined in the Species at Risk Act Action Plan for Resident Killer Whales (DFO 2017) and has been conducted on the NRKW population each year since 1973, making it one of the longest-running, continuous time series of data for a cetacean population.
This report presents updated population information for NRKW in 2018 and supplements existing publications, particularly between releases of NRKW photo-identification catalogues. Please cite this document according to the citation provided at the end of this report. The demographic data presented here are not intended to be analyzed for further studies without permission of Fisheries and Oceans Canada's (DFO) Cetacean Research Program. Please contact the Cetacean Research Program for data use requests relating to this report.
This Science Response Report results from the Science Response Process of February 2019 on the 2018 Report on the Northern Resident Killer Whale annual census.
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