Animals, Plants, and Habitats

Mountains host a rich assortment of terrestrial and aquatic habitats, which vary across elevations within mountain ranges, and across south-to-north latitudes among mountain ranges.The diversity of habitats are home to a wealth of plants, animals, and other biota. Mountains contribute disproportionately to the Earth’s diversity of life relative to the area they occupy. While mountains account for about 25 percent of the land area on Earth, they are home to more than 85 percent of the world’s amphibians, birds, and mammals, many entirely restricted to mountains.

Mountain ecosystems face numerous threats. The most significant include air pollution, climate change, invasive species, altered fire regimes, and habitat fragmentation outside of parks.

How Do Habitats Vary on Mountains?

One example of a mountain elevation gradient is illustrated by this graphic of vegetation zones across the steep western slope of the Sierra Nevada, in Sequoia National Park. Species diversity typically decreases from low to high elevations, and across latitudes from the Equator toward each pole. Temperature and moisture availability vary across elevations and latitudes, and are important drivers of where plants and animals can live.

Exploring Mountain Life and Habitats

People who visit national parks are often drawn to the solitude and natural environments that parks offer. Viewing wildlife (from safe distances) can be a memorable highlight for park visitors--whether watching a bear foraging in a forest, seeing a hawk soaring overhead, or hearing frogs chorusing in a wetland. Many also time their visits to see the reds and golds of fall foliage or the many-colored wildflowers blooming in mountain meadows. Visit the links below to explore the variety of plants, animals, and habitats of mountain parks.