- Research & Monitoring
- Stock Assessment
The IPHC conducts an annual stock assessment using data from the Fishery-Independent Setline Survey (FISS), the commercial Pacific halibut and other fisheries, as well biological information from its research program. The assessment includes the Pacific halibut resource in the IPHC Convention Area, covering the Exclusive Economic Zones of Canada and the United States of America. Data sources are updated each year to reflect the most recent scientific information available for use in management decision making.
Stock Assessment Model Input Files
The 2022 stock assessment included an ensemble of 4 individual assessment models. Below are the raw input data files for each of the four models in the format required by stock synthesis (Methot, R.D., and Wetzel, C.R. 2013. Stock synthesis: A biological and statistical framework for fish stock assessment and fishery management. Fish. Res. 142(0): 86-99. doi: http://dx.doi.org/10.1016/j.fishres.2012.10.012).
Please contact the IPHC Secretariat (firstname.lastname@example.org) for more information about the contents of these files and for permission to use them for any analysis.
|IPHC-2023-SA-03||2022 Pacific halibut areas-as-fleets long time-series model||15 Dec 2022|
|IPHC-2023-SA-04||2022 Pacific halibut areas-as-fleets short time-series model||15 Dec 2022|
|IPHC-2023-SA-05||2022 Pacific halibut coastwide long time-series model||15 Dec 2022|
|IPHC-2023-SA-06||2022 Pacific halibut coastwide short time-series model||15 Dec 2022|
Peer review of the IPHC Stock Assessment currently takes two forms: 1) Scientific Review Board - an annual peer review process, and 2) External peer review – a periodic peer review by an external independent reviewer approximately every three (3) years.
Scientific Review Board
The Scientific Review Board (SRB) is a small group of fisheries science experts and provides an independent scientific peer review of Commission science/research proposals, programs, and products, including but not limited to Stock assessment.
The SRB meets twice-annually for 2.5 to 3 days to peer review the core IPHC science streams. While early meetings of the SRB were focused solely on reviewing the stock assessment inputs, modelling and results, in recent years the IPHC Secretariat’s scientific output, in terms of volume and complexity have increased substantially.
All SRB documents and reports containing recommendations regarding the stock assessment are available on the IPHC meeting website under "Scientific Review Board".
External Peer Review
At the 95th Session of the IPHC Annual Meeting (AM095) in January 2019, the Commission agreed to implement an additional process of periodic external peer review of the IPHC Stock Assessment. The following is a list of key documents relating to the 2019 external peer review:
|Independent Peer Review for the 2019 IPHC Stock Assessment - Prepared by Kevin Stokes||02 August 2019|