00000cam 2200000zi 4500 9.961408 CaOODSP 20260525150452 m o d f cr cn |||||||| 260327t20262026bccd ob f000 0 eng d 9780660992785 CaOODSP eng rda CaOODSP eng fre n-cn-bc Fs97-6/3767E-PDF Arbeider, Michael, author. Assessment and redevelopment of visual survey expansion factors and a summary of current interpolation methods for Fraser River sockeye (Oncorhynchus nerka) spawner estimates / Michael Arbeider, Brian Leaf, Tanya Vivian, Sean Everitt, Marissa Glavas, Brit van Amerom, Daniel Doutaz, Kaitlyn Dionne, A. Scott Decker. Kamloops, BC : Fraser and Interior Area Stock Assessment, Pacific Region, Fisheries and Oceans Canada, 2026. ©2026 1 online resource (vi, 119 pages) : charts. text txt rdacontent computer c rdamedia online resource cr rdacarrier Canadian technical report of fisheries and aquatic sciences, 1488-5379 ; 3767 Includes bibliographical references (pages 46-51). "This report introduces a methodical approach to select system-characteristic-specific expansion methods, using a paired-estimates database (n=162) and ranking models’ performance. The updated approach reduced bias (mean-percent-error) from -13.3% to -0.5% and improved accuracy (mean-absolute-percent-error) from 30.2% to 24.5%. Precision of estimates was overestimated. Standardized application rules to account for caveats within the framework were developed from test application to the 2024 data. Alternative approaches or adjustments may be required when systems exceed the characteristics represented in the database or where the system characteristics consistently resulted in bias or low accuracy"--Abstract, page v. Includes abstract in French. Sockeye salmon British Columbia Fraser River. Fish populations Estimates British Columbia Fraser River. Fish surveys British Columbia Fraser River. Saumon rouge Colombie-Britannique Fraser, Fleuve. Poissons Populations Estimation Colombie-Britannique Fraser, Fleuve. Inventaires ichtyologiques Colombie-Britannique Fraser, Fleuve. Canada. Department of Fisheries and Oceans. Pacific Region, issuing body. Canadian technical report of fisheries and aquatic sciences ; 3767. (CaOODSP)9.504449 PDF 5.10 MB https://publications.gc.ca/collections/collection_2026/mpo-dfo/fs97-6/Fs97-6-3767-eng.pdf HTML N/A https://doi.org/10.60825/1kyf-kv54