Example of a systems mapping that describes how the different species are dependent on each other in an advanced ecological web.
This is a part of the investigation made for the Albanova site.
Source page 17
For example the Eurasian jay plants a lot of oak trees when it collects acorns and hides them i the ground to keep as food in the winter. The bird itself depend on dense stands of conifers to nest and hide from predators. Simply this bird needs an environment with bort dense conifers and oaks.
Source page 40.