wouldn't the ecosystem collapse without human intervention? i mean, the ecosystem we know now is due to human intervention. and really it seems to me that Rubi-Ka has a greater biodeversity then it once did, considering there are different environments/biomes then there was when Atlantean first landed. weather systems seem to have been created due to atsompheric change generating plant life, or the tree you so desperatly want to defend. really, to be quite honest if it wasn't for human intervention in the first place you would have nothing to defend.
and as far as the mining goes in relation to the Homo-Nanomage species, you would not even be around if it wasn't for notum in the first place. in other wprds you have notum mining to be thankful for. you complain about the mining situation, but it was that very mining that created you in the first place, and if the mining stops the ecosystem (which is dependant on the notum) collapses. when that collapses we see extreme shifts in weather patterns, as well as storm stregnth. the planet will divert back into a barren rock. everyone will loose interest in the planet, and the population stuck on the planet will die.
and still there is no evidence for or against the eventuial depletion of notum in the near or distant future. it is unknown at the rate by which the element renews it's self, or how much there is of it on the planet. the amount of the planet hospitiable to life is only, roughly, 20%. as such we have a whole large section of the pie to eat, and we haven't even finished our first slice.