Latest update - Pleiades Barnacles survey completed - Full list of surviving Barnacle systems ( Pleiades ) with farmable barnacles highlighted
Barnacles - Historical info mostly now here. From the days of having to eyeball planets without knowing if there were any targets.
I think far more to it than humans depleted them.
Aegis most likely heavily involved
Allripe Forest systems however currently appear to remain untouched, maybe due to Thargoid interceptor visits at the forests