May I have a source, please? I don't want to believe you
I remember I came across these results during my research about the peruvian Saturniidae quite a few times. I would have to go through my literature, again...however, when I got that time and find the papers, I will let you know
but I think you can potentially also have an old-growth forest with higher species richness if it isn't industrially used
Yeah, of course there might be exceptions. However, I meant the usual and more or less intense used forests in Germany. When in very old forests trees die by their own and, thus, open up the canopy this will be a similar effect than logging by humans - just naturally.
The reason why the quarry you mentioned is such a good habitat is probably a combination of the fact that it is a favourable succession state and that the area is hardly reachable for forestry use.
Agree. But at best, there would not even be a forest I mean, for Apaturas etc. it's good....but the highest importance of quarries would be as open land for xerothermophilic species which need open ground and few nutrients. These habitats are even more rare then good succession states, I'd say