Mantua et. al, 1999.
The figure to the left is a graphical depiction of the Inverse
Production Regimes of Hare et al. (1999). The bars represent
an index of 30 salmon time series for the period 1925-1997.
Following are the regional definitions: 1 Western Alaska,
2 Central Alaska, 3 Southeast Alaska, 4 British
Columbia, 5 Washington, 6 Oregon, 7 California.
Three climate indices were included in the analysis: Pacific Decadal
Oscillation (PDO), Aleutian Low Pressure Index (AL) and the El
Niño-Southern Oscillation (ENSO). The longest bar, Central
Alaska (2) pink salmon, has a value of 0.855, and represents the
correlation between that time series and the illustrated temporal
component (score) from the Principal Component Analysis.