Picoplankton abundance

You have uploaded to Wikipedia a mysterious map about picoplankton abundance (pictured) as being your "own work". Can you please explain further what the map is about? For example, you have not mentioned the source of the data you must have used in constructing the map. Further, you have constructed numbered contour lines, but you have not mentioned what the numbers represent. You have also drawn five precise rectangular areas that you claim are "regions of high abundance". These regions strangely include places such as Sydney, Madagascar, parts of Chile etc.