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. 2020 Jan 27;11:536. doi: 10.1038/s41467-019-14215-w

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Fig. 2 — a number of total confirmed whale entanglements per year detected off the US west coast, identified to species when possible, and estimates of humpback population size (data from NOAA⁴⁶), b anomaly of abundance for total euphausiids (krill) and northern anchovy (adult and young-of-the-year; YOY), and total species richness within the central California region (standardized by mean and SD; 1990–2016; catch-per-unit-effort; CPUE; May–June); c summary of humpback whale relative abundance (per 3 km⁻¹; mean and SD) during the annual ecosystem survey and assessment of changes in their occurrence On-Shelf (<200 m) vs. Off-Shelf (>200 m); bars represent z-score values and stars denote significant differences (p < 0.01); no whale survey data were collected in 2011 (denoted by X). See Supplementary Figs. 4–6 for additional information on changes in forage species abundance. Source data are provided within the Source Data file.