Smaller biomes include those such as the Pacific Rain Forest, and the Pinyon-Juniper Biomes in the West.
All biomes are ecosystems, but ecosystems can be larger or smaller than biomes.
Biomes are especially interesting to naturalists wanting to see new kinds of plants and animals because many organisms are restricted to just one biome. Consequently, the more biomes you visit, the greater will be the variety of species you see. In western North America it's easier to visit several biomes than in the East. In the East, to visit taiga, which is a swampy, coniferous forest in very cold locations, one must travel deep into Canada. In the west, you simply find a high mountain and climb until the trees almost peter out.