The northern limit of its distribution is in northern Alberta.

At the upper limit of its altitudinal distribution this snake reaches the coniferous forests zone, but are not found deep in this forest type.

Here, plants and animals from the northern United States and Mexico both reach the limits of their distribution.

Hemigrapsus takanoi is native to Japan and China, although the limits of its distribution are still unclear.

The tiger catshark is endemic to southern Africa, but the limits of its distribution are not well known.

Many Amazonian species reach the southern limit of their distribution here.

Melville noted that within the limits of the tree's distribution, hybrids are more common than Plot's elm itself.

The Scots elm (Ulmus glabra) also grows at the very limit of its distribution here.

At the northern limit of its distribution, this species is usually found on heather and other low vegetation in heathlands.

Eastern hemlock are also present as this is the westernmost limit of its distribution.