Research topic: index exploration

[gertsevv]

WCGBTS sdmTMB index was estimated by state and showed that the difference between N and S is driven by the index in WA.

Z-score trends are below. CA and OR appear to be similar in standardized trends, but WA is different again (particularly from 2015 forward). Z-score trends are below.


The coastwide index follows the CA-OR trend for the most part, except for the most recent years

Map of WCBGTS survey cpue by year show presence of occasional large hauls, with largest in 2025, the second largest in 2024.

These large hauls have large impact on the index estimate.