Appendix 3: Biological Status Details

The following table details the biological status outcomes and benchmarks values for Conservation Units (CUs) in each region.

Current abundance is calculated as the geometric average spawner abundance over the most recent generation, where generation length is determined by the life-history of the CU. The years contributing to the estimated current spawner abundance are in the Years column (note that if there are missing years of data in this date range, the average is still calculated unless all years are missing). Years of Data shows the number of years over the time series with CU-level estimates of spawner abundance. Biological status outcomes are provided for two benchmark types (percentile and spawner-recruit (SR), as well as from other assessments under Canada’s Wild Salmon Policy (WSP), the Committee on the Status of Endangered Wildlife in Canada (COSEWIC), and the province of BC (applicable to steelhead only). For the spawner-recruitment benchmarks, the percentage in each column is the probability (%) of a given status based on the posterior distributions for benchmarks (SGEN and 80% SMSY) from a hierarchical Bayesian model. For the spawner-recruit and percentile benchmark values, 95% credible intervals are shown in parentheses.

Biological Status
Percentile Benchmarks
Spawner-Recruit Benchmarks
Region
Species
Conservation Unit
Current Spawner Abundance
Years
Years of Data
Percentile
SR % Red
SR % Amber
SR % Green
WSP
COSEWIC
BC
S25
S50
Sgen
Smsy
Central Coast
Chinook
Bella Coola-Bentinck
22,821
2013-2017
33
good
0%
0%
100%
14,425 (11,246 - 16,781)
20,800 (15,312 - 21,182)
3,175 (2,316 - 4,057)
9,643 (8,653 - 10,746)
Central Coast
Chinook
Dean River
2,217
2013-2017
33
good
0%
0%
100%
1,300 (1,081 - 1,523)
2,000 (1,535 - 2,396)
290 (146 - 507)
959 (808 - 1,200)
Central Coast
Chinook
Docee
439
2008-2011
30
poor
469 (418 - 648)
781 (652 - 973)
Central Coast
Chinook
North & Central Coast-Early
891
2013-2017
33
good
0%
0%
100%
602 (379 - 645)
702 (610 - 925)
111 (62 - 201)
385 (327 - 502)
Central Coast
Chinook
North & Central Coast-Late
1,080
2017-2020
27
fair
600 (266 - 876)
1,716 (728 - 1,805)
Central Coast
Chinook
Rivers Inlet
817
2013-2017
38
fair
7.5%
89.3%
3.2%
726 (479 - 1,090)
1,381 (890 - 1,957)
471 (254 - 898)
991 (753 - 1,472)
Central Coast
Chinook
Wannock
6,468
2013-2017
38
fair
0%
0%
100%
5,535 (4,123 - 5,872)
6,599 (5,818 - 7,506)
797 (472 - 1,365)
3,027 (2,628 - 3,721)
Central Coast
Chum
Bella Coola-Dean Rivers
115,116
2018-2021
68
fair
0%
31.4%
68.6%
109,704 (82,129 - 154,350)
185,662 (154,840 - 234,958)
25,047 (15,426 - 45,549)
106,462 (89,989 - 136,276)
Central Coast
Chum
Bella Coola River-Late
6,325
2018-2021
19
fair
5,084 (2,959 - 6,460)
9,338 (6,164 - 13,989)
Central Coast
Chum
Douglas-Gardner
54,355
2018-2021
68
poor
58.2%
41.8%
0%
77,727 (58,173 - 116,295)
150,030 (108,789 - 214,376)
54,988 (35,214 - 84,073)
136,300 (110,562 - 174,321)
Central Coast
Chum
Hecate Lowlands
33,474
2018-2021
68
poor
67.3%
32.7%
0%
72,369 (57,386 - 83,740)
96,120 (82,822 - 110,081)
34,057 (18,635 - 66,096)
75,119 (60,013 - 115,788)
Central Coast
Chum
Mussel-Kynoch
21,837
2018-2021
68
poor
18.9%
81.1%
0%
50,880 (39,783 - 71,513)
104,354 (64,551 - 115,621)
16,870 (10,428 - 27,322)
50,000 (43,646 - 61,309)
Central Coast
Chum
Rivers Inlet
4,396
2018-2021
66
poor
100%
0%
0%
7,809 (4,287 - 11,619)
15,945 (10,366 - 26,876)
8,858 (5,951 - 13,901)
22,230 (17,299 - 29,043)
Central Coast
Chum
Smith Inlet
6,547
2018-2021
67
poor
87.6%
12.4%
0%
22,959 (11,196 - 29,765)
36,793 (24,894 - 53,760)
8,371 (4,630 - 14,234)
25,036 (20,545 - 31,147)
Central Coast
Chum
Spiller-Fitz-Hugh-Burke
91,839
2018-2021
68
poor
9.6%
90.4%
0%
161,904 (130,398 - 197,108)
231,612 (187,959 - 253,555)
62,322 (36,481 - 102,534)
135,065 (114,373 - 177,093)
1–15 of 443 rows
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