Fig. 1
From: Connectivity enhances resilience of marine forests after an extreme event
(A) Sampling location and sites for kelp (Ecklonia radiata) and the estimated percentage of forest loss after the 2011 marine heatwave (Wernberg et al. 2016). Bright blue indicates the estimated extent of range contraction. Red to yellow shading indicates the impact of the marine heatwave. (B) Bidirectional relative migration rates (mR) calculated with divMigrate58 and based on NM, using the main dataset (n = 6133 SNPs) to identiy source-sink dynamics. Open circles represent populations and are positioned according to relative migration rates; the stronger the migration rates between populations, the closer populations are positioned. Connecting vectors indicate migration directions and are weighted according to the relative migration rate (thin vectors indicate a low migration rate, thick vectors indicate a high rate). Significant asymmetric migration rates indicating source-sink dynamics are indicated in black. PGCr2-3 were excluded because of low sampling numbers (< 10). See Table 1 for abbreviation of sampling sites.
