Graphical choices
The illustration was not constructed randomly; Each “obstacle” has its own designated area: agriculture and urban life, contaminated hives, transhumance (the seasonal moving of hives) and climate have been distributed according to an approximate percentage of severity estimated by Ms. Bernier, although these figures may vary in certain regions of the world.
So, the area containing the four sources of disease and parasites is the largest and represents the greatest threat to hives today. Climate currently has the least impact out of the four main threats – but for how much longer?
The overall shape could be said to resemble that of an open hive.