Buzz
In biology lessons, we often come across words like “biodiversity,” “biotechnology,” and “biochemistry.” However, here’s another intriguing “bio” word: The biosphere, which stretches from the ocean floor to about 10 kilometers (6 miles) above sea level, is the region that encompasses parts of the atmosphere, hydrosphere, and lithosphere.
The biosphere has a profound effect on biodiversity, which, in turn, shapes biochemistry and biotechnology. This interaction, whether intentional or accidental, gives rise to biomes, which Merriam-Webster defines as “major ecological community types.” Below are ten remarkable biomes that are part of Earth’s biosphere.
10. Mangrove Forests
Mangroves may face criticism, with some saying “They smell,” or “Unpleasant creatures live there,” or even “They’re dangerous.” These claims, however, are far from the truth, and here’s why:
Although mangroves do support creatures such as worms, barnacles, oysters, and other invertebrates, they also serve as feeding grounds for birds and crocodiles. They provide a nursery for shrimp and other fish, protect shorelines from erosion, and decaying mangroves enrich the ocean with nutrients. They’re not toxic, and they don’t emit unpleasant odors. While some may find them unappealing, they certainly don’t harbor mythical creatures like goblins. Don’t judge a biome by its appearance.
Fun fact: There are approximately 70 different species of mangrove across the world. (Note: This number may vary depending on how one defines “mangrove.”) All of them provide the benefits mentioned earlier!
9. Tundra
Tundras are rare, found mostly in the far reaches of Northern Canada, Northern Alaska, Greenland, and Siberia, along with a few other remote areas. Alpine tundras, however, are more widespread, existing in places such as the Andes Mountains, Finland, Norway, Sweden, the Himalayas, and Alaska. The tundra biome is known for its lack of diversity; you might spot an Arctic fox and a few other animals, but otherwise, it’s just moss, lichens, low-growing flowers, and tough grasses.
The tundra is predominantly made of permafrost, and it is cold. Permafrost doesn’t necessarily mean there’s ice beneath the surface, despite the name. While temperatures often dip below freezing, “permafrost” does not automatically indicate frozen ground, though ice is common. In the winter, temperatures can plummet to –34°C (–30°F), so be sure to pack your warmest socks—flip-flops won’t cut it here.
8. Tropical Rain Forest
Whether you’re swinging through the trees in Ecuador or scaling a giant in Madagascar, you can always expect a warm and consistent climate in a tropical rain forest—even if it rains a lot. (I mean, could you not tell?)
But don’t confuse a rain forest with a jungle—they’re not identical. Rain forests have towering canopies that block sunlight from reaching the forest floor, limiting the growth of low-level plants. A jungle, on the other hand, could have been a rain forest at one point. If an event like a fire clears the canopy, it allows dense plant growth on the ground, making the area nearly impossible to navigate. That’s when it becomes a jungle.
The types of plants thriving in tropical rain forests include orchids, vines, ferns, moss, and much more. Located near the Equator, tropical rain forests don’t really experience seasons… well, at least not in the traditional sense. Seasonal changes are barely noticeable.
Fun fact: You’d breathe quite easily in a tropical rain forest, with all that extra oxygen. (Anyone up for a jog?)
7. Grassland
This biome is known by many names across the globe. In Central Africa, it’s called a savanna; in Southern Africa, it’s referred to as a veld. Hungary knows it as the Pustza, while South America calls it the Pampas. In North America, it’s either a prairie or plain, in Russia, they’re steppes, and in Australia, it’s known as the bush.
Most grasslands formed during the Cenozoic era (66 million years ago to the present). As rainfall became scarcer and temperatures dropped in anticipation of the Ice Age, ancient forests transformed into grasslands. Although some grasslands do have trees, they are not the dominant feature.
Fun fact: In a savanna, wildfires may prevent trees from growing but actually help increase biodiversity.
6. Mediterranean Forest
A highly unique biome, Mediterranean forests share common characteristics around the world: scorching, dry summers followed by cool, wet winters. Although the name suggests otherwise, this biome extends beyond the Mediterranean region and can also be found on the western coasts of most continents, as well as along the coastal regions of the Middle East.
Mediterranean forests are commonly home to yucca plants, wild cats, and occasionally the rare monkey puzzle trees. However, the primary trees in this biome include pine, cedar, and olive trees. Due to its proximity to the ocean, many of the trees here have adapted to tolerate saltwater carried by the wind and waves.
5. Desert
The one thing all deserts have in common is a severe lack of rainfall. The air is arid, and water is a precious commodity. Oasis spots are few and far between. Honestly, deserts are not places you’d want to get lost in. Plants do exist here, but rain is the rarest of occurrences. In the desert region of Cochones, Chile, no rain fell from 1919 until 1965.
Deserts don’t need to be hot to be considered deserts. Temperatures can range from over 50 degrees Celsius (122 °F) to well below freezing, as seen in Antarctica. Desert wildlife is equally diverse. Collared peccaries feed on cactus leaves and fruit, while Gila monsters and beaded lizards are rare venomous species. The wolf spider hides in a burrow during the day and hunts at night.
Fun fact: Deserts cover approximately one third of the Earth's surface.
4. Boreal Forest
Boreal forests stretch across Canada, Scandinavia, and Russia. These forests serve as a transition zone; as you travel farther north, the boreal forest gradually shifts into tundra. The dominant trees in this biome are evergreen conifers, including pine, spruce, and fir, but their growth is limited by the low precipitation—most of it comes as snow.
It’s not a particularly diverse biome, it’s cold, and while it may not be ideal for humans, it’s perfect for moss. Moss covers up to one third of the forest floors in boreal forests.
Fun fact: The Taiga is a common nickname for this biome.
3. Abyssal Zone
A vast, pitch-black region of the ocean, the abyssal zone begins 4,000 meters (13,000 ft) below the surface. It’s as dark as onyx, incredibly cold, and experiences immense pressure. As a result, very few life forms can thrive here. Even creatures that dwell in the deep, like the goblin shark, live just above this zone.
To survive in this extreme environment, some species depend on chemosynthesis. Hydrothermal vents, created by volcanic activity and tectonic plate movements, release sulfur into the ocean. Certain organisms near these vents use sulfur as their energy source, forming an underwater community sustained by geothermal power.
The world is indeed a strange and diverse place. But it’s also incredibly beautiful.
2. Aquatic
Aquatic biomes are incredibly diverse. They encompass tidal estuaries, coral reefs, polar seas, desert wadis, and rivers. In total, the ocean covers approximately three quarters of the Earth's surface.
Tidal estuaries serve as a boundary between saltwater and freshwater. Here, seaweed, oysters, crabs, and many smaller fish thrive. People who frequent the beach might refer to these areas as “swimming ponds.”
Freshwater regions typically include small ponds, large glacial lakes, streams, and rivers, and are vital for plants and animals that thrive in low-salinity environments.
1. Temperate Forest
Temperate forests are widespread and feature various subtypes. The trees here, such as oak, hickory, beech, elm, and willow, are resilient. Winters can see temperatures dip below freezing, while summers can soar up to 32°C (90°F).
Wildlife is abundant, with species like rabbits, skunks, deer, bobcats, wolves, and foxes, among others. The growing season in this biome can stretch up to 200 days, and some areas can be free of snow for as long as six months.
