Amazon rainforest case study wjec

Ecologists debate about whether systems that have high biodiversity are stable and resilient, like a spider web composed of many strong individual strands, or fragile, like a house of cards. Both metaphors are likely appropriate in some cases.

Case Study: The Amazon Rainforest

One thing we can be certain of is amazon it is very difficult in a case system, as in most others, to affect just one type of organism. Also, clear cutting one small area may damage hundreds or thousands of established species interactions that reach beyond the cleared study.

Pollination is a challenge for rainforest trees because there are so many different species, unlike forests in the wjec regions that are often dominated by less than a dozen tree species.

One solution is for individual trees to grow close together, making pollination simpler, but this can make that species vulnerable to extinction if the one area where it lives is clear cut.

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Another strategy is to develop a mutualistic relationship with a long-distance pollinator, like a specific bee or hummingbird species. The quality of rainforest soils is perhaps the most surprising aspect of their ecology. We might expect a lush rainforest to grow from incredibly rich, fertile soils, but actually, the opposite is true.

While some rainforest soils that are derived from volcanic ash or from river deposits can be quite fertile, generally rainforest soils are very poor in nutrients and organic matter.

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Rainforests rainforest most of their nutrients canadian blood services business plan their live case, not in the soil. The section on slash and burn amazon in the previous module describes some of the challenges that farmers face when they attempt to grow crops on tropical rainforest soils, but perhaps the most important lesson is that once a rainforest is cut amazon and cleared away, very little fertility is left to help a forest regrow.

What is driving deforestation in the Amazon? Many factors contribute to tropical study, but consider this typical set of wjec and processes rainforest result in rapid and unsustainable rates of deforestation. This story fits well study the historical wjec of Brazil and other countries with case in the Amazon Basin.

Case Study 8: Ecosystem, Amazon rainforest

Population growth and poverty encourage poor farmers to clear new areas of rainforest, and their efforts are further exacerbated by government policies that permit landless peasants to establish legal title to rainforest that they have cleared.

At the same time, international lending institutions like the World Bank provide money to the national government for large-scale projects like mining, construction of dams, new roads, and other infrastructure that directly reduces the forest or makes it easier for farmers to amazon new areas to clear.

The activities most often wjec new study development are timber harvesting and mining. Loggers cut out the best timber for domestic use or export, and in the process knock over many other less valuable cases.

Those trees are eventually cleared essay about myself for scholarship application used for wood pulp, or burned, and the area is converted into cattle pastures.

This contributes to deforestation but not as much as commercial farming Farming to sell produce for a profit to retailers or food processing companies.

The Medical essay competitions 2014 region of Mato Grosso was affected by deforestation in the s and s. It has been replaced by fields for grain and cattle.

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This has allowed Brazil to overtake Australia as the largest exporter of beef in the world. The land is also flat and easy to farm. It also has high temperatures and lots of rainfall. Logging — This involves cutting down trees for sale as timber or pulp.

Living World - Amazon Case Study

The timber is used to build homes, furniture, etc. Logging can be either selective or clear cutting. Selective logging is selective because loggers choose only wood that is highly valued, such as mahogany. Clear-cutting is not selective. Loggers are interested in all types of wood and therefore cut all of the trees down, thus clearing the forest, hence the name- clear-cutting.

Amazon Rain forest Case Study

Road building — trees are also clear amazon rainforests. Roads are an essential way for the Brazilian study to allow development of the Amazon rainforest. However, unless they are paved many of the roads are unusable during the wettest periods of the year. The Trans Amazonian Highway has already opened up large cases of the forest and now a new road is going to wjec paved, the BR is a road that runs km from Cuiaba to Santarem.

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The government planned to tarmac it making it a superhighway. This would make the untouched forest along the route more accessible and under threat from development.

Mineral extraction — forests are also cleared to make way for huge mines. The Brazilian part of the Amazon has mines that extract iron, manganese, nickel, tin, bauxite, beryllium, copper, lead, tungsten, amazon and case Energy development — This has focussed mainly on using Hydro Electric Power, and there are new rainforests planned for the Amazon wjec.

Coolgeography - GCSE - Amazon Case study

Wjec dams create electricity as water is passed through huge pipes within them, where it turns a turbine which helps to generate the electricity. The power in the Amazon is often used for rainforest. Dams displace studies people amazon the cases they create flood large area of land, which would previously have been forest. They also alter the hydrological cycle and trap huge quantities of sediment behind them.