Pacific Salmon Explorer

Pacific Salmon Explorer

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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
Long-term trend (all years)
Short-term trend (most recent three generations)

Individual Conservation Units (24)

Damdochax

Long-term trend: -13.1% change over all years

Fred Wright

Long-term trend: -79.8% change over all years

Lower Nass

Long-term trend: -78.8% change over all years

Lower Nass

Long-term trend: 100% change over all years

Lower Nass-Portland (river-type)

Long-term trend: 1,248.8% change over all years

Meziadin

Long-term trend: -23.1% change over all years

Nass Summer

Long-term trend: 47.2% change over all years

Nass-Portland-Observatory (odd)

Long-term trend: 893.8% change over all years

Nass-Skeena Estuary (even)

Long-term trend: 25.7% change over all years

Portland Canal-Observatory

Long-term trend: -37.6% change over all years

Portland Inlet

Long-term trend: -51.5% change over all years

Portland Sound-Observatory Inlet-Lower Nass

Long-term trend: 9.3% change over all years

Portland Sound-Observatory Inlet-Portland Canal

Long-term trend: -9% change over all years

Upper Nass

Long-term trend: -46.8% change over all years

Upper Nass

Long-term trend: 135% change over all years

Upper Nass River (river-type)

Long-term trend: -58.8% change over all years

Bowser

Clements

Kwinageese

Leverson

Nass Winter

Oweegee

Upper Nass (even)

Upper Nass (odd)