PSF
Pacific Salmon Explorer
RegionsMethodsData LibraryAbout

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. Linear trends are estimated on a natural log scale from smoothed spawner abundance time series.

  • Average spawner abundance per generation

Upper Fraser River (Spring 5-2)

Chinook
Chinook
Long-term trend: -48.2% change over all years
1960198020002020year4.1k8.2k16k33ksmoothed spawners
Central Coast
Columbia
Fraser
Haida Gwaii
Nass
Northern Transboundary
Skeena
Vancouver Isl. & Mainland Inlets
All Regions
Figures

Layers List

  • Conservation Unit Boundaries
To pick up a draggable item, press the space bar. While dragging, use the arrow keys to move the item. Press space again to drop the item in its new position, or press escape to cancel.