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.

本数据集涵盖3份数据文件：1. NOAA_2003_2016.xlsx：该文件用于展示2004至2016年间深水远海水域（拖网采样）中向日葵海星（Pycnopodia helianthoides）的种群衰减情况；2. Hakai biomass 2010-2017.csv：该文件收录了2010至2017年不列颠哥伦比亚省中部海岸11处岩礁点位的带状样带调查数据，用以呈现该区域内向日葵海星的种群下降趋势；3. Sunflower_data_complete_abundance_score_lower_limit_with_temp.csv：该数据集依托经过专业培训的水肺潜水员采集的观测数据，对2006至2017年间向日葵海星的种群丰度进行评估，同时包含海表温度数据，用于探究向日葵海星种群丰度与海洋表层温度异常之间的关联。