Figure 4
From: Marine heatwaves and the collapse of marginal North Atlantic kelp forests
Relationship between percent mortality of transplanted and tagged kelps and the maximum sea temperatures they experienced in 2018. Controls represent kelp that were back transplanted into source sites. Temperature mortality thresholds are 19.7 °C for southern Norway and 22.8 °C for the eastern USA. Data are shown in Supplementary Table S1. Baseline mortality rates of tagged S. latissima in 1981 in S. Norway was 23 ± 6% and in 1980 in eastern USA was 47 ± 2% (SD) (calculated by extrapolating monthly mortality rates over the 1.6- and 1.8-month study periods, respectively).
