Distance decay in the contribution of a source ocean to a sink ocean when using B SNV-FEAST. In each experiment, only stations from one ocean were considered sources for a given sink station. For example, when performing source tracking between the Mediterranean and North Atlantic, for each Mediterranean station, the 10 available North Atlantic stations were considered potential sources. Thus, plotted are 10 points for a given Mediterranean sink, where each point represents the contribution of a source station from the North Atlantic to the Mediterranean sink station in question. Shown in the inset text are the slope and t -test p -value for the slope.
