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Trends in Spawner Abundance

This assessment provides information on the trends in estimated spawner abundance over the long term (all years of data) and short term (most recent three generations) for the selected Conservation Unit(s). Linear trends are estimated on a natural log scale from smoothed spawner abundance time series.

  • Average spawner abundance per generation

Individual Conservation Units (94)

Bute Inlet

Chum
Chum
Long-term trend: 141.5% change over all years

East Howe Sound-Burrard Inlet (odd)

Pink
Pink (odd)
Long-term trend: -25.3% change over all years

East Vancouver Island Summer

Steelhead
Steelhead
Long-term trend: -53.6% change over all years

East Vancouver Island Winter

Steelhead
Steelhead
Long-term trend: -33.8% change over all years

East Vancouver Island-Cowichan and Koksilah (Fall x-1)

Chinook
Chinook
Long-term trend: -29.9% change over all years

East Vancouver Island-Georgia Strait (Summer 4-1)

Chinook
Chinook
Long-term trend: 16.7% change over all years

East Vancouver Island-Goldstream (Fall x-1)

Chinook
Chinook
Long-term trend: -97.3% change over all years

East Vancouver Island-Johnstone Strait (odd)

Pink
Pink (odd)
Long-term trend: 145.6% change over all years

East Vancouver Island-Nanaimo and Chemainus (Fall x-1)

Chinook
Chinook
Long-term trend: 60.6% change over all years

East Vancouver Island-North (Fall x-1)

Chinook
Chinook
Long-term trend: -43.8% change over all years

East Vancouver Island-Qualicum and Puntledge (Fall x-1)

Chinook
Chinook
Long-term trend: -15.1% change over all years

Georgia Strait

Chum
Chum
Long-term trend: 125.9% change over all years

Georgia Strait (even)

Pink
Pink (even)
Long-term trend: 638.6% change over all years

Georgia Strait (odd)

Pink
Pink (odd)
Long-term trend: 459.6% change over all years

Great Central

Sockeye
Lake Sockeye
Long-term trend: -18.4% change over all years

Homathko-Klinaklini-Smith-Rivers-Bella Coola-Dean (odd)

Pink
Pink (odd)
Long-term trend: 550.8% change over all years

Howe Sound-Burrard Inlet

Chum
Chum
Long-term trend: 697.7% change over all years

Loughborough

Chum
Chum
Long-term trend: -49.6% change over all years

Nahwitti (odd)

Pink
Pink (odd)
Long-term trend: 9.5% change over all years

Nimpkish

Sockeye
Lake Sockeye
Long-term trend: -46.9% change over all years

Northeast Vancouver Island

Chum
Chum
Long-term trend: -42.9% change over all years

Northwest Vancouver Island

Chum
Chum
Long-term trend: 89.5% change over all years

Sakinaw

Sockeye
Lake Sockeye
Long-term trend: -99.8% change over all years

Southern Coastal Streams

Chum
Chum
Long-term trend: -96.6% change over all years

Southern Fjords (even)

Pink
Pink (even)
Long-term trend: 139.5% change over all years

Southern Fjords (odd)

Pink
Pink (odd)
Long-term trend: -29.9% change over all years

Southern Mainland-Georgia Strait (Fall x-1)

Chinook
Chinook
Long-term trend: -21.3% change over all years

Southern Mainland-Southern Fjords (Fall x-1)

Chinook
Chinook
Long-term trend: 1,551.3% change over all years

Southwest & West Vancouver Island

Chum
Chum
Long-term trend: -25% change over all years

Sproat

Sockeye
Lake Sockeye
Long-term trend: 84.7% change over all years

Upper Knight

Chum
Chum
Long-term trend: -96.7% change over all years

West Vancouver Island Summer

Steelhead
Steelhead
Long-term trend: -54.1% change over all years

West Vancouver Island-Nootka and Kyuquot (Fall x-1)

Chinook
Chinook
Long-term trend: 25.1% change over all years

West Vancouver Island-North (Fall x-1)

Chinook
Chinook
Long-term trend: -2.6% change over all years

West Vancouver Island-South (Fall x-1)

Chinook
Chinook
Long-term trend: -25.1% change over all years

Alice

Sockeye
Lake Sockeye
DATA DEFICIENT

Canoe Creek

Sockeye
Lake Sockeye
DATA DEFICIENT

Cecilia

Sockeye
Lake Sockeye
DATA DEFICIENT

Cheewat

Sockeye
Lake Sockeye
DATA DEFICIENT

Clayoquot

Coho
Coho
DATA DEFICIENT

Clayoquot

Sockeye
Lake Sockeye
DATA DEFICIENT

Deserted

Sockeye
Lake Sockeye
DATA DEFICIENT

East Vancouver Island & Georgia Strait (river-type)

Sockeye
River Sockeye
DATA DEFICIENT

East Vancouver Island-Georgia Strait

Coho
Coho
DATA DEFICIENT

East Vancouver Island-Johnstone Strait-Southern Fjords

Coho
Coho
DATA DEFICIENT

East Vancouver Island-Nanaimo (Spring x-2)

Chinook
Chinook
DATA DEFICIENT

Fairy

Sockeye
Lake Sockeye
DATA DEFICIENT

Fulmore

Sockeye
Lake Sockeye
DATA DEFICIENT

Georgia Strait Mainland

Coho
Coho
DATA DEFICIENT

Henderson

Sockeye
Lake Sockeye
DATA DEFICIENT

Hesquiat

Sockeye
Lake Sockeye
DATA DEFICIENT

Heydon

Sockeye
Lake Sockeye
DATA DEFICIENT

Hobiton

Sockeye
Lake Sockeye
DATA DEFICIENT

Homathko (Summer x-x)

Chinook
Chinook
DATA DEFICIENT

Homathko-Klinaklini Rivers

Coho
Coho
DATA DEFICIENT

Howe Sound-Burrard Inlet

Coho
Coho
DATA DEFICIENT

Ida-Bonanza

Sockeye
Lake Sockeye
DATA DEFICIENT

Jansen

Sockeye
Lake Sockeye
DATA DEFICIENT

Juan de Fuca-Pachena

Coho
Coho
DATA DEFICIENT

Kakweiken

Sockeye
Lake Sockeye
DATA DEFICIENT

Kanim

Sockeye
Lake Sockeye
DATA DEFICIENT

Kennedy

Sockeye
Lake Sockeye
DATA DEFICIENT

Klinaklini (Summer 5-2)

Chinook
Chinook
DATA DEFICIENT

Loose

Sockeye
Lake Sockeye
DATA DEFICIENT

Mackenzie

Sockeye
Lake Sockeye
DATA DEFICIENT

Maggie

Sockeye
Lake Sockeye
DATA DEFICIENT

Megin

Sockeye
Lake Sockeye
DATA DEFICIENT

Muchalat

Sockeye
Lake Sockeye
DATA DEFICIENT

Muriel

Sockeye
Lake Sockeye
DATA DEFICIENT

NW Vancouver Island (river-type)

Sockeye
River Sockeye
DATA DEFICIENT

Nahwitti

Sockeye
Lake Sockeye
DATA DEFICIENT

Nahwitti Lowland

Coho
Coho
DATA DEFICIENT

Nitinat

Sockeye
Lake Sockeye
DATA DEFICIENT

Northwest Vancouver Island (even)

Pink
Pink (even)
DATA DEFICIENT

O'Connell

Sockeye
Lake Sockeye
DATA DEFICIENT

Park River

Sockeye
Lake Sockeye
DATA DEFICIENT

Phillips

Sockeye
Lake Sockeye
DATA DEFICIENT

Power

Sockeye
Lake Sockeye
DATA DEFICIENT

Quatse

Sockeye
Lake Sockeye
DATA DEFICIENT

Schoen

Sockeye
Lake Sockeye
DATA DEFICIENT

Shushartie

Sockeye
Lake Sockeye
DATA DEFICIENT

South Coast Summer

Steelhead
Steelhead
DATA DEFICIENT

South Coast Winter

Steelhead
Steelhead
DATA DEFICIENT

Southern Coastal Streams-Queen Charlotte Strait-Johnstone Strait-Southern Fjords

Coho
Coho
DATA DEFICIENT

Southern Fjords (river-type)

Sockeye
River Sockeye
DATA DEFICIENT

Tzoonie

Sockeye
Lake Sockeye
DATA DEFICIENT

Vernon

Sockeye
Lake Sockeye
DATA DEFICIENT

West Vancouver Island

Coho
Coho
DATA DEFICIENT

West Vancouver Island (even)

Pink
Pink (even)
DATA DEFICIENT

West Vancouver Island (odd)

Pink
Pink (odd)
DATA DEFICIENT

West Vancouver Island (river-type)

Sockeye
River Sockeye
DATA DEFICIENT

West Vancouver Island Winter

Steelhead
Steelhead
DATA DEFICIENT

William-Brink

Sockeye
Lake Sockeye
DATA DEFICIENT

Woss

Sockeye
Lake Sockeye
DATA DEFICIENT
Northern Transboundary
Haida Gwaii
Nass
Skeena
Central Coast
Fraser
Vancouver Isl. & Mainland Inlets
Columbia
All Regions
Figures

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