---

To have to test these studies on various types of forest in Belgium, we could draw little from conclusions!
It is necessary to badly test not goupes with various traps and the results vary from one year to another!
The methods is analyzed appear unsuited the ones after the others to the wire of time!
More serious, in fact always the same groups are used as objects of study to characterize a site!
To have to test on of Geotrupes the system marking with crammed traps of droppings, that does not give valid indications!

Nothing is worth the sense of smell of an old entomologist to appreciate a site and its biodiversity! :o