A look at the many types and distribution of rainforests

Tropical rainforest biome

This means they have gardens on arable land that has been cleared of vegetation. Bobcats, mountain lions, and black bears are major predators in the rainforests of the Pacific Northwest. Having numerous refuges available also results in much higher total biomass than would otherwise be possible. Eventually streams and rivers form and flooding becomes possible. These geographic conditions help create areas of high rainfall. Even if humans artificially add nutrients to the soil, the nutrients mostly wash away and are not absorbed by the plants. In general, climatic patterns consist of warm temperatures and high annual rainfall. Mammals may include primates , felids and other families. Kapok trees are keystone species in many rain forest ecosystems. Cooler temperatures and a more stable climate slow down decomposition, allowing more material to accumulate. This productivity allows many plant species to grow for incredibly long periods of time. Many seedlings that will grow to the canopy level are in the understory. The main difference is that rain forests have thick canopies and taller trees. Native peoples You can help by adding to it. Animals that live in these forests can withstand long periods of cold temperatures and usually have thick fur or other insulation — among them are moose, bears, lynx, wolf, deer, wolverines, caribou, bats, small mammals, and birds.

The densest areas of biodiversity are found in the forest canopy, as it often supports a rich flora of epiphytesincluding orchids, bromeliads, mosses and lichens. Second, the type of clay particles present in tropical rainforest soil has a poor ability to trap nutrients and stop them from washing away.

According to the U.

tropical forest definition

Organic matter falls from trees and plants, and these organisms break down the decaying material into nutrient s. Rainforests thrive on every continent except Antarctica. Examples include leopard Panthera parduspoison dart frogs Dendrobates sp. The science of accessing tropical forest canopy using airships or similar aerial platforms is called dendronautics.

amazon rainforest

Tropical forests cover a large part of the globe, but temperate rainforests only occur in few regions around the world. Image credits: Terpsichores There are two seasons here: a short, moist, mildly-warm summer and a long cold dry winter.

A look at the many types and distribution of rainforests

Tropical rainforests exhibit high levels of biodiversity. Tall, broad-leaved evergreen trees are the dominant plants. Evergreen conifers with needle leaves that can stand the cold, like pine, fir, and spruce trees, live here.

Rainforest facts

These regenerating young successional forests are called secondary forests or second-growth forests. Tropical rainforests are among the most threatened ecosystems globally due to large-scale fragmentation as a result of human activity. The fauna is similar to that found in the emergent layer, but more diverse. Africa contains areas of high cloud forest, mangrove swamps and flooded forests. Most trees have roots near the surface, because there are insufficient nutrients below the surface; most of the trees' minerals come from the top layer of decomposing leaves and animals. The fauna is similar to that found in the emergent layer, but more diverse. On younger substrates, especially of volcanic origin, tropical soils may be quite fertile. Red-bellied piranhas and pink river dolphins swim its waters. Common animals that live in the forest are squirrels, rabbits, birds, deer, wolves, foxes, and bears. There are still some deciduous trees such as maples and many mosses and ferns — resulting in a Jurassic-looking forest. Moist seasonal tropical forests receive high overall rainfall with a warm summer wet season and a cooler winter dry season.

All this rain creates a moist climate and a long growing season, which results in very large trees. The decomposition rate can be evaluated by measuring the uptake of oxygen.

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Where are the Rainforests?