Compare and identify similarities and differences between Kamchatka and Sakhalin?

In Kamchatka, due to the mosaic nature of the vegetation cover, any identification of floristic areas is conventional, since their boundaries are very vague. At the same time, it is obvious that two completely identical local floras cannot exist. There are reliable facts indicating a difference in the flora of groups of liverworts of the same belts (for example, mountain tundra) in the south and north of the peninsula or, even more so, of the island massifs. Thus, it grows on fine earth near snowfields in the tundra in the north of the peninsula. + There are volcanoes and geysers in Kamchatka, there are none on Sakhalin; but Sakhalin is the center of the fishing industry in Russia.