Biomes (old from Animalia for reference only): Caves

Caves Biome: The Dark Frontier of Biological Wonders

Caves represent a distinct ecosystem beneath the Earth’s surface or the underground biome. Characterized by darkness, relatively stable temperatures, and often high humidity, caves host a variety of life forms that have adapted to this unique environment.

  1. Climate: Caves typically have a stable climate with consistent, year-round temperatures. The specific temperature can depend on the region’s climate, but it often reflects the average annual temperature of the area above ground. Caves are also usually very humid, with air saturation reaching 100%.
  2. Flora and Fauna: Despite the lack of sunlight and photosynthesis, caves are home to various organisms known as troglobites, which have adapted to life in total darkness. These include various species of insects, spiders, fish, and crustaceans, often characterized by lack of pigmentation, blindness or reduced eyes, and elongated appendages. Some caves also host bats, which are not true cave dwellers but are often associated with caves. The primary producers in many cave systems are not plants but bacteria and other microbes that utilize chemosynthesis.
  3. Terrain/Soil: The terrain within a cave varies greatly, from rocky and rugged to smooth and sandy. Some caves feature stalactites, stalagmites, and other mineral formations created by the slow dripping of water. The “soil” in caves, if present, is often made up of fine rock particles, accumulated organic material, and guano (bat droppings).
  4. Sub-types: Caves can be formed in various ways leading to different types, such as solution caves formed in soluble rock like limestone, lava tubes formed from flowing lava, and sea caves formed by waves.
  5. Geographical Distribution: Caves can be found worldwide, wherever suitable geological conditions exist for their formation. Notable regions with many caves include the Karst landscapes of the Dinaric Alps in Europe, the Guadalupe Mountains in the United States, and the Nullarbor Plain in Australia.
  6. Human Impact: Humans have used caves for shelter, art, and burial sites for thousands of years. Modern human impacts include tourism, pollution, and habitat destruction. Often endemic to a single cave system, cave organisms can be particularly vulnerable to disturbances.

Caves are fascinating biomes that glimpse a dark, mysterious world beneath our feet. They are critical habitats for unique species and offer essential geological and archaeological insights. Despite the challenges of studying and conserving these delicate ecosystems, caves continue to capture our imagination and scientific curiosity.

Discover Animals that Live in the Caves Biome: