Figure 1. The Global Alliance of Continuous Plankton Recorder Surveys (GACS) sampling effort since September 1997. Different coloured lines represent sampling transects of individual surveys: the North Atlantic CPR Survey (n = 54,176), the SCAR Southern Ocean CPR Survey (n = 36,501), the North Pacific CPR Survey (n = 4,674), and the Australian CPR Survey (n = 4,975).