Dataset of Pycnopodia helianthoides abundance shallow nearshore waters from REEF and the sea surface temperature, as well as the data for the abundance of this species at deep offshore waters.

3 Datasets. NOAA_2003_2016.xlsx contains the data to show the decline of Pycnopodia helianthoides in deep offshore waters (trawls) between 2004 and 2016. Hakai biomass 2010-2017.csv contains the data to show the decline of Pycnopodia in belt transects at 11 rocky reef sites located on the central coast of British Columbia between 2010 and 2017. Finally, Sunflower_data_complete_abundance_score_lower_limit_with_temp.csv contains the data to assess the abundance of P. helianthoides between 2006-2017 based on data gathered by trained scuba divers. This dataset also contains the sea surface temperature informartion to explore a relationship between P. helianthoides abundance and ocean surface temperature anomalies.