Marienburg has only been in Poland for a few decades.
In fact only since the conclusion of the great rape of central and eastern Europe by russia and her allies during the last century.
When speaking in the timeframe of ecosystems, Marienburgs present location seems rather immaterial.
Not exactly. I believe the area was swiped from Poland by Prussia in the first of the Polish Partitions in 1772. It had been Polish for some centuries prior to that.