Science Advances

Supplementary Materials

This PDF file includes:

  • Table S1. Summary of results of the candidate hierarchical ordinal regression models.
  • Table S2. Parameter estimates, SEs, and 95% confidence interval of the selected ordinal model linking the reporting of ACs 0 to 4 in the shallow nearshore roving-diver surveys and maximum temperature anomalies from within 60 days before each survey.
  • Fig. S1. Massive decline of P. helianthoides over 20 days between 9 and 29 October 2013.
  • Fig. S2. Annual SST records during 2013, 2014, and 2015 by jurisdiction for British Columbia, Washington, Oregon, and California.
  • Fig. S3. Sackinaw Rock before and after development of green urchin barrens following decimation of P. helianthoides.

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