With a few exceptions, many dominant non-forested wetland plants also occur well in southerly locations, indicating they may be less sensitive to changes in temperature than to changes in the delicate balance in hydrologic regimes and nutrients. Those species that may be most vulnerable tend to be associated with communities that occur at the southern edge of their range, such as Boreal Rich Fen, Shore Fen, and, in the southern part of the state, Bog Relict and Alder Thicket.