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Tropical Rainforest

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Introduction

Structure of vegetation in the rainforest Emergent's are the tallest trees and are usually over 50 meters tall. The sea of leaves blocking out the sun from the lower layers is called the canopy. The under canopy mainly contains bare tree trunks. The shrub layer has the densest plant growth. It contains shrubs and ferns and other plants needing less light. The forest floor is usually dark and damp. It contains a layer of rotting leaves and dead animals. Impacts on indigenous people � The replacement of forest with grassland can also have a major effect on the way of life of indigenous people. Without the forest wood, they cannot make the artifacts, tools, and buildings that are an important part of their economy � Deforestation in indigenous territories by loggers has sometimes triggered violent conflict. Logging, mining, and farming in tropical forests sometimes displace native communities. Left without land or other resources, native cultures often break up. ...read more.

Middle

� One of the major problems of the scheme has been establishing the trust and cooperation of local villagers. For many, hunting is part of tradition and a main source of income, yet now carrying a firearm without a permit is illegal and hunting is discouraged. In general, tropical rainforests have hot and humid climates, where it rains virtually everyday. At some parts of the year the rainfall is extremely heavy, while in other parts of the year it will rain a lot less. Temperatures vary through the year - but much less than the rainfall. ropical rainforests have dense vegetation, which typically occurs in four levels. From ground level up these levels of vegetation are: * The shrub layer is at ground level in a tropical forest. It is dark and gloomy with very little vegetation between the trees. During heavier rainfalls this area can get flooded. * Under canopy is the second level up. ...read more.

Conclusion

However shallow roots aren't great for supporting huge rainforest trees, so many tropical trees have developed huge buttress roots. These stretch from the ground to two meters or more up the trunk, which help anchor the tree to the ground. 3. Lianas are woody vines that start at ground level, and use trees to climb up the canopy where they will spread from tree to tree to get as much light as possible. 4. Strangler figs start at the top and work down. The seed is dropped in a nook at the top of a tree where it starts to grow, using the debris collected there. Gradually the fig sends aerial roots down the trunk of the host, until they reach the ground and take root. As it matures, the fig will gradually surround the host, the aerial roots will criss-cross the trunk and start to strangle. Meanwhile the figs branches will grow taller, dominating the sunlight, while invasive roots rob the host of nutrients. Eventually the host will die and decompose leaving the hollow, but sturdy trunk of the strangler fig. ...read more.

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