Rainforest
Rainforest
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      WHAT ARE RAINFORESTS?
      Tropical rainforests are forests with tall trees, warm climate, and lots of rain. In some
      rainforests it rains more than one inch every day!
      Rainforests are found in Africa, Asia, Australia, and Central and South America. The largest
      rainforest in the world is the Amazon rainforest.
      Rainforests are found in the tropics, the region between the Tropic of Capricorn and Tropic of
      Cancer. In this region the sun is very strong and shines about the same amount of time every
      day all year long making the climate warm and stable.
           1.    Brazil
           2.    Congo (Democratic Republic)
           3.    Peru
           4.    Indonesia
           5.    Colombia
           6.    Papua New Guinea
           7.    Venezeula
           8.    Bolivia
           9.    Mexico
          10.    Suriname
Each rainforest is unique but there are certain features common to all tropical rainforests.
      Scientists have long been interested in studying the canopy, but because of the height of
      rainforest trees research has been difficult until recently. Today there are special facilities with
      rope bridges, ladders, and towers to help scientists discover the secrets of the canopy.
      The canopy is just one of several vertical layers in the rainforest. Take a look at the diagram
      on the left to see the other layers (the overstory, understory, shrumb layer, and forest floor).
      The leaves of the canopy often make the ground layer of the rainforest a dark and humid
      place. However, despite its constant shade, the rainforest floor is an important part of the
      forest ecosystem.
      The forest floor is where decomposition takes place. Decomposition is the process by which
      decomposers like fungi and microorganisms break down dead plants and animals and
      recycle essential materials and nutrients.
      Many of the largest rainforest animals are found on the forest floor. Some of these include
      elephants, tapirs, and jaguars.
      Tropical rainforests support the greatest diversity of living organisms on Earth. Although they
      cover less than 2 percent of Earth’s surface, rainforests house more than 50 percent of its
      plants and animals. Here are some examples of the richness of rainforests:
             ●   Europe has 321 butterfly species, while a park in the rainforest of Peru (Manu National
                 Park) has 1300 species.
Rainforests have an abundance of plants and animals for the following reasons:
             ●   Climate: because rainforests are located in tropical regions, they receive a lot of
                 sunlight. This sunlight is converted to energy by plants through the process of
                 photosynthesis. Since there is a lot of sunlight, that means there is a lot of energy in
                 the rainforest. This energy is stored in plant vegetation which is eaten by animals.
                 Because there is a lot of food there are many species of plants and animals.
             ●   Canopy: the canopy structure of the rainforest means there are more places for plants
                 to grow and animals to live. The canopy offers new sources of food, shelter, and
                 hiding places, and provides another world for interaction between different species.
                 For example there are plants in the canopy called bromeliads that store water in their
                 leaves. Animals like frogs use these pockets of water for hunting and laying their eggs.
RAINFOREST PEOPLE
      Tropical rainforests are home to tribal people who rely on their surroundings for food, shelter,
      and medicines. Today very few forest people live in traditional ways; most have been
      displaced by outside settlers or have been forced to give up their lifestyles by governments.
      Of the remaining forest people, the Amazon supports the largest populations, though these
      people too, have been impacted by the modern world. While they still use the forest for
      traditional hunting and gathering, most Amerindians, as these people are called, grow crops
      (like bananas, manioc, and rice), use western goods (like metal pots, pans, and utensils), and
      make regular trips to towns and cities to bring foods and wares to market. Still, these forest
      people can teach us a lot about the rainforest. Their knowledge of medicinal plants used for
      treating illness is unmatched and they have a great understanding of the ecology of the
      Amazon rainforest.
      In Africa there are native forest dwellers sometimes known as pygmies. The tallest of these
      people, also known as the Mbuti, rarely exceed five feet in height. Their small size enables
      them to move about the forest more efficiently than taller people.
      Today most forest dwellers live in small settlements or practice nomadic hunting and
      gathering. In the past, tropical rainforests and surrounding areas supported great civilizations
      like the Mayas, Incas, and Aztecs, who developed complex societies and made great
      contributions to science.
      These great civilizations faced some of the same environmental problems (excessive forest
      loss, soil erosion, overpopulation, lack of water supplies) that we face today. For the Maya,
      the damage to the environment may have been so great as to cause their downfall.
      Before the discovery of the New World by Christopher Columbus in the 15th century, an
      estimated 7-10 million Amerindians (the term for American indigenous peoples) lived in
      American rainforests, half of them in Brazil. Great cities existed in the Andes and the Amazon
      The arrival of Europeans brought the end of the native civilizations in Central and South
      America. Europeans carried diseases that killed millions of Amerindians, and within 100 years
      of the arrival of these outsiders, Amerindian population was reduced by 90 percent. Most of
      the surviving native people lived in the interior of the forest, either pushed there by the
      Europeans, or traditionally living there in smaller groups.
      While they don’t watch TV, use the internet, or play video games, kids in the rainforest do
      many of the same things you probably do. They play with friends, help their families with
      chores, and go to school.
      Since “rainforest kids” live closer to nature than the average American child, they learn things
      that are helpful in the environment around them. From an early age many children learn how
      to fish, hunt, and collect materials and food from the forest. Instead of going to a playground
      or a shopping mall for fun, children in places like the Amazon spend most of their time
      outdoors playing in the forest and in rivers and streams.
      Rainforests help stabilize the world’s climate by absorbing carbon dioxide from the
      atmosphere. Excess carbon dioxide in the atmosphere is believed to contribute to climate
      change through global warming. Therefore rainforests have an important role in addressing
      global warming.
      Rainforests also affect local weather conditions by creating rainfall and moderating
      temperatures.
      Rainforests are home to a large number of the world’s plant and animals species, including
      many endangered species. As forests are cut down, many species are doomed to extinction.
      Some rainforest species can only survive in their natural habitat. Zoos cannot save all
      animals.
      Rainforests help maintain the water cycle. According to the U.S. Geological Survey, “the
      water cycle, also known as the hydrologic cycle, describes the continuous movement of water
      on, above, and below the surface of the Earth.”
      The role of rainforests in the water cycle is to add water to the atmosphere through the
      process of transpiration (where they release water from their leaves during photosynthesis).
      This moisture contributes to the formation of rain clouds which release the water back on the
      rainforest. In the Amazon, 50-80 percent of moisture remains in the ecosystem’s water cycle.
      When the forests are cut down, less moisture is goes into the atmosphere and rainfall
      declines, and this decline sometimes leads to drought.
      The roots of rainforest trees and vegetation help anchor the soil. When trees are cut down
      there is no longer anything to protect the ground, and soils are quickly washed away with
      rain. The process of washing away of soil is known as erosion.
      As soil is washed down into rivers, it causes problems for fish and people. Fish suffer
      because water becomes clouded, while people have trouble navigating waterways that are
      shallower because of the increased amount of dirt in the water. Meanwhile farmers lose
      topsoil that is important for growing crops.
      Every year an area of rainforest the size of New Jersey is cut down and destroyed. The
      plants and animals that used to live in these forests either die or must find a new forest to call
      their home. Why are rainforests being destroyed?
      Humans are the main cause of rainforest destruction or deforestation. Humans are cutting
      down rainforests for many reasons, including:
One of the leading causes of rainforest destruction is logging. Many types of wood used for
      furniture, flooring, and construction are harvested from tropical forests in Africa, Asia, and
      South America. By buying certain wood products, people in places like the United States are
      directly contributing to the destruction of rainforests.
      Research has found that the number of species found in logged rainforest is much lower than
      the number found in untouched primary rainforest. Many rainforest animals cannot survive in
      the changed environment.
      Local people often rely on harvesting wood for rainforests for fire wood and building
      materials. In the past such practices were not particularly damaging to the ecosystem.
      However, today in areas with large human populations, the sheer number of people collecting
      wood from an area rainforest can be extremely damaging. For example the forests around
      the refugee camps in Central Africa (Rwanda and Congo) were virtually stripped of all trees in
      some areas.
      Every year thousands of miles of rainforest are destroyed for agricultural use. The two main
      groups responsible for converting rainforest into farmland are poor farmers and corporations,
      Poor farmers in many parts of the world rely on clearing rainforest to feed their families.
      Without access to better agricultural lands, these people use slash-and-burn to clear patches
      of forest for short-term periods. Typically, they farm the cleared land for a couple of years
      before the soil is exhausted of nutrients and they must move on to a new patch of forest.
      Agricultural companies are clearing more rainforest than ever before, especially in the
      Amazon where large tracts of rainforest are being converted into soybean farms. Some
      experts believe that South America will someday have an area of farmland that rivals that of
      the American Midwest. Much of this farmland will come at the expense of the Amazon
      rainforest.
      Clearing for cattle pasture is the leading cause of deforestation in the Amazon, and Brazil
      now produces more beef than ever before. Besides raising cattle for food, many landowners
      use cattle to expand their land holdings. By simply placing cattle on an area of forest land,
      landowners can gain ownership rights to that land.
      Road and highway construction in the rainforest opens up large areas for development. In
      Brazil, the Trans-Amazonian highway resulted in the destruction of huge areas of forest by
      poor colonists, loggers, and land speculators. In Africa, logging roads give access to
      poachers who hunt endangered wildlife as “bushmeat” or as meat sold to city dwellers.
      Poverty plays a major role in deforestation. The world’s rainforests are found in the poorest
      areas on the planet. The people who live in and around rainforests rely on these ecosystems
      for their survival. They collect fruit and wood, hunt wildlife to put meat on the table, and are
      paid by companies that extract resources from forest lands.
      Most rural poor never have the options that we in western countries take for granted. These
      people almost never have a choice to go to college or become doctors, factory workers, or
      secretaries. They must live off the land that surrounds them and make use of whatever
      resources they can find. Their poverty costs the entire world through the loss of the tropical
      rainforests and wildlife. Without providing for these people, rainforests cannot be saved.
      Rainforests are disappearing very quickly. The good news is that there are a lot of people
      who want to save rainforests. The bad news is that saving rainforests is not going to be easy.
      It will take the efforts of many people working together in order to ensure that rainforests and
      their wildlife will survive for your children to appreciate and enjoy.
      Some steps for saving rainforests and, on a broader scale, ecosystems around the world
      involve focusing on “TREES”:
             ●   Teach others about the importance of the environment and how they can help save
                 rainforests.
             ●   Restore damaged ecosystems by planting trees on land where forests have been cut
                 down.
             ●   Encourage people to live in a way that doesn't hurt the environment
             ●   Establish parks to protect rainforests and wildlife
● Support companies that operate in ways that minimize damage to the environment
      In rainforest countries local people sometimes do not know why forests are important.
      Through educational programs these people can learn that forests provide key services (like
      clean water) and are home to plants and animals found nowhere else in the world. Few
      children in a place like Madagascar know that lemurs are not found in America. They are
      quite happy when they learn that lemurs only live in Madagascar.
      In trying to protect rainforests we need to also look at how damaged forests can be brought
      back to health. While it is impossible to replant a rainforest, some rainforests can recover
      after they have been cut down—especially if they have some help through the planting of
      trees. In some cases it is also possible to use deforested lands for improved forms of
      agriculture so they can provide food for people living nearby. When these people have food
      they will not need to cut down more forest to plant crops.
      A key part to saving rainforests and the environment is encouraging all people to live in ways
      that do less harm to the world around them. Driving fuel-efficient cars, conserving water,
      turning off lights when you don’t need them, and recycling are all ways that you and your
      family can reduce your impact on the environment.
      In rainforest countries many scientists and organizations are working to help local people live
      in ways that cause less damage to the environment. Some people call this idea “sustainable
      development.” Sustainable development has a goal of improving the lives of people while at
      the same time protecting the environment. Without improving the livelihood of people living in
      and around rainforests it is very difficult to protect parks and wildlife. Conservation must be in
      the interest of local people to make parks work.
      Creating protected areas like national parks is a great way to save rainforests and other
      ecosystems. Protected areas are locations which receive protection because of their
      environmental or cultural value. Generally, protected areas are managed by governments
      and use park rangers and guards to enforce the rules of the park and protect against illegal
      activities like hunting and the cutting down of trees.
      Today parks protect many of the world’s most endangered species. Animals like pandas are
      found only in protected areas.
      Parks are most successful when they have the support of local people living in and around
      the protected area. If local people have an interest in the park they may form a “community
      watch” which protects the park from illegal logging and wildlife poaching.
      Parks can also help the economy in rainforest countries by attracting foreign tourists who pay
      entrance fees, hire local wilderness guides, and buy local handicrafts like baskets, T-shirts,
      and beaded bracelets.
      Today there are many companies concerned about the environment. These companies look
      for ways to reduce their impact on the world around them through recycling, using less
      energy, and supporting conservation efforts in other countries. If consumers like you and your
      parents support these companies by buying their products and services, then the
      environment will be better off.
ECOTOURISM
      Ecotourism is environmentally responsible travel to enjoy and appreciate nature and cultural
      experiences. Ecotourism should have low impact on the environment and should contribute to
      the well-being of local people.
There are several things you can do at home to help reduce your impact on the environment.
             ●   Turn off lights when you don’t need them—when light bulbs burn out replace them with
                 energy-efficent bulbs;
QUIZ
Now it's time to see what you have learned about tropical rainforests.
              "TREES": ___________ others about the importance of the environment and how they
              can help save rainforests.
              Restore damaged ecosystems by planting ___________ on land where forests have
              been cut down.
              Encourage people to live in a way that doesn't hurt the ___________.
              Establish ___________ to protect rainforests and wildlife.
              Support ___________ that operate in ways that minimize damage to the environment.
          11. What are 3 ways that people can help reduce their impact on the environment?
              ____________________________________________
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