Fig. 2: Sampling effort of the IBTS survey and temporal dynamics of vulnerability in the North Sea fish communities.
From: A functional vulnerability framework for biodiversity conservation

a Spatial and temporal coverage of the North Sea International Bottom Trawl Survey (NS-IBTS) from 1983 to 2020 (each point represents a 30 min haul). The background map was obtained through the maps r package (v.3.3.0). b Temporal dynamics of fish functional vulnerability and species richness in the North Sea from 1983 to 2020. The dark blue line denotes the mean functional vulnerability and the light blue lines represent each of the 99 iterations. Source data are provided as a Source Data file.