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Potential Effects of Contaminants on Fraser River Sockeye Salmon

Potential Effects of Contaminants on Fraser River Sockeye Salmon

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Table 2.1. Overview <str<strong>on</strong>g>of</str<strong>on</strong>g> 36 c<strong>on</strong>servati<strong>on</strong> units (CUs) for <strong>Fraser</strong> <strong>River</strong> sockeye salm<strong>on</strong> (Pestal and Cass 2009).ManagementGroupCU labelCU type# <str<strong>on</strong>g>of</str<strong>on</strong>g>Lakes# <str<strong>on</strong>g>of</str<strong>on</strong>g>SitesEscapement*Obs Avg(all) LatestFreshwaterAdaptive Z<strong>on</strong>eCU Rati<strong>on</strong>aleStock**Late Lillooet-L lake 1 8 70 90,409 2007 Lillooet lake Birkenhead(c<strong>on</strong>tinued) Set<strong>on</strong>-L lake 1 1 60 6,073 2007 Middle <strong>Fraser</strong> lake PortageShuswap Complex-L lake 1 44-58 70 645,208 2007 South Thomps<strong>on</strong> lake complex Late Shuswap, Misc. Shuswap<strong>River</strong> *<strong>Fraser</strong> Cany<strong>on</strong> river - 6 10 3,662 1991 <strong>Fraser</strong> Cany<strong>on</strong> ecotypic*Lower <strong>Fraser</strong> river - 5 70 21,689 2007 Lower <strong>Fraser</strong> genetics Harris<strong>on</strong>*Middle <strong>Fraser</strong> river - 8-10 36 1,185 2007 Middle <strong>Fraser</strong> timing + gen. Stellako, Quesnelecotypic, gen.similar to NFR,diff. timing*Thomps<strong>on</strong> river - 2 4 4,255 1991 N&S Thomps<strong>on</strong>*Upper <strong>Fraser</strong> river - 1 1 2 1984 Upper <strong>Fraser</strong> ecotypic, statusuncertain*Widge<strong>on</strong> river - 1 65 694 2007 Lower <strong>Fraser</strong> genetics Misc. n<strong>on</strong>-ShuswapTotal Sites: 271-275* Refer to Secti<strong>on</strong> 2.2.1 <str<strong>on</strong>g>of</str<strong>on</strong>g> Pestal and Cass (2009) for comments <strong>on</strong> these CUs and corresp<strong>on</strong>ding escapement data.** Stocks currently used for forecasts and spawner-recruit models (e.g. DFO 2009). Refer to Secti<strong>on</strong> 2.2.2 <str<strong>on</strong>g>of</str<strong>on</strong>g> Pestal and Cass (2009) for comments.T-2

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