Tropical Rainforest!


Tropical rainforest

The tropical rainforest biome is a biome where it is wet and warm and it contains a variety of plants and other organisms. Almost all Tropical rainforess fall between the tropic of cancer and the tropic of capricorn. The longest tropical rainforest covers most of the Amazon region in Brazil. The change that led to the development of todays forests occured 130 million years ago. Durring the 1900's tropical rianforests were decreasing in size bye .8% each year wich is approximatly 59,000 square miles (slightly more than the area of florida) The combination of high tempatures and an abundance of water produces the high equateral rainfall. Equateral regions are the rainiest regions on earth. Althought you would think of a climate as the type of weather in the area, the tropical rainforest climate is distiguished by the amount of rainfall.(James D. Nations)

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Since the tropical rainforests of the world are located on or near the equator, they are generally hot. In the tropical rainforest biome an average temperature of 77 degrees fahrenheit is sustained. Also, the temperature in a tropical rainforest will not reach below 64 degrees fahrenheit and will usually not raise any higher than about 94 degrees fahrenheit. The tropical rainforest biome is the biome that has the least amount of temperature change a year since most rainforests are so close to the equator and since the sun is basically always on the equator, there is not much temperature change.
"Tropical Rainforest" 2001
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This graph shows a range of different tempertaures in all types of forests.It also shows how the temperature of a tropical rainforest differs from other forests.

To many people when the word tropical rainforest comes up the immediate thought of a warm area arises. Tropical rainforests have more of a wet and moist climate, for there is rain everyday, though it is still warm. However, not all rainforests contain warm temperatures all year round. It is only the rainforests that are near (approximately ten degrees) to the equator that has a consistently warm temperatures year round. Because of this, tropical rainforests have been divided into three groups: monsoon, equatorial and subtropical. Usually tropical rainforests have equatorial climates, for most of them are close to the equator. There are never any dry seasons in the tropical rainforest biome, for one rarely sees a day with no rain in the tropical rainforest.
"Climates in TRF" 1999

Plant Life
The tropical rainforest biome contains some of the most vegetated areas in the entire world. The reason why there is so much vegetation is because of the daily rainfall, which helps to produce a wide variety of plant life. Some of the plant life that is grown in the tropical rainforest biome includes bamboo, banana plants, pineapples, coconuts and many many more. Because of the vast amount of trees, several different layers of forest have been made. The most well known of these several layers is most likely the canopy. The canopy contains trees that are colossal in size, ranging from heights of 60 feet to 150 feet. Since the canopy is so thick, a sort of "umbrella" is formed over the forest floor, which shades out the majority of the sunlight. Even with the lack of sunlight due to the canopy, the tropical rainforest biome is able to crow immense amount of plant life due to its massive amount of rainfall per year.
"Rainforest Plantlife" savetherainforest,org
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Animal Species:
In the biome of a tropical rainforest, there is a great diversity of animal species in the groups of reptiles, mammals, invertebrates,and birds. Some of them are most commonly known as jaguars, toucans, parrots, gorillas, and tarantulas. Although there are many different animals in the rainforest, they all share one thing in common, their biome. All these animals must be able to adapt to living in the tropical rainforest biome, or else they would have to move. They all survive in the rainforest in a climate of approximately 75 to 80 degrees F all year round. These animal species almost always have easy access to water because rain falls almost everyday in the rainforest. Most scientists think that there is such a wide variety of animals in the tropical rainforest because rainforests are the oldest ecosystem (biome) on earth. One animal commonly known to the rainforest is called a Toco Toucan. It is the largest of all toucans and adapts in a tropical rainforest along with all the other animals in its biome. It likes to live in open areas somewhere around South America. The Toco Toucan mates with others depending on where they live, and breed about once a year.
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The Orangutan:

The Orangutan, name meaning "man of the forest" in Malay, is another commonly known animal to live in the tropical rainforst biome. These animals live in the tree tops of the Southeast Asian tropical rainforest. This species is the largest animal to live in the trees in Southeast Asia. Orangutans can grow up to be five feet tall and 220 pounds as a male and 110 pounds as a female. When orangutans are fully grown, they have an arm span of approximately eight feet. The build of an orangutan consits of a very strong upper body and a weak lower body, including very short, weak legs. As known, orangutans usually have reddish brown hair and a high sloping forehead. This species has feet shaped like our hands, so therefore orangutans have four hands. While walking, the orangutan walks on all fours with their knees bent inwards. The sound that this animal makes that sounds like a squeaking sound is a call to others. The orangutan eats during the day and sleeps at night in branches about 40 to 50 feet above the ground. Orangutans start to mate at the age of eight to ten and mate all year round.
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Energy Flow:

The energy flow in a tropical rainforest with sunlight and water is very different from any other biome. Because the tropical rainforest recieves so much sunlight and rainfall, plants grow to be bigger, taller, and stronger than plants in any other biome. Plants becomming very large prevent most sunlight from reaching the bottom layer of the rainforest. As shown in the diagram below, 100% of the rainfall reaches the rainforest. 50% of that rainfall is consumed, 25% of it evaporates, and the other 25% of it is surface runoff. This rainfall cycle known as the water cycle continues everyday and produced rainfall and water to the plants and animals of the tropical rainforest biome.

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A average tropical rainforest recieves more than 150cm of rain a year. This is almost 1/8 of an inch per day. Although the rainforest recieves large amounts of rain, not all of it makes it to the forest floor. In fact, less than 30% of the rain fall reaches the forest ground. The tropical rain forest loses 25% of incoming rainwater by evaporation, 25% of rain falls onto the leaves and 40% of it runs down the barks of tree trunks. Seasons in a tropical rainforest are not depicted by the type of weather but by the amount of rainfall. In the chart shown below, March is the most rainiest month for part of the Amazon in Manaus Brazil with about 325 mm of rainfall. (James D,Nations, 17 20 21 61)


This climate is found near the equator. That means that there is more direct sunlight hitting the land and sea there than anywhere else. Sun rays beat down on the rainforests from almost directly overheas. In the tropics the high angle of the sun generates more warmth and solar energy than in temperate zones. The canopy (top layer of trees) obsormes almsot 98% of the sunlight that stikes the rainforest. The Shrub level is located at the ground where it is damp and dark with little sunlight. As you get closer to the ground, the amount of sunlight decreases as shown in the picture below.(James D. Nations, 16,17,21,29)(Michael Allaby104-105)



1st Youtube Video-

Distribution of trpical rainforest map-

Sunlight distribution picture-






Tropical Rainforests- endangered enviroment
Publisher- Franklin Watts
City of Publication- United States,1988
Author- James D. Nations

Tropical Rainforests- Biomes of the earth
Publisher- Chelsea Clubhouse
Year Published-2006
Authour- Michael Allaby


1.) All tropical rainforests fall between...
A.-Africa and Asia.
B- The Tropic of Cancer and the Tropic of Capricorn
C.- The Tropic of Cancer and Africa.

2.)Since all tropical rainforests are located near the equator, they...

A.- are generall hot
B.- have more rainfall
c.- both

3.)In the tropical rainforest, there is rain..
A.-About everyday
B- About every other day
C.- About once a week
4.)The reason why there is so much vegetation in the tropical rainforest is because..

A.- It rains so much
B.- It is the oldest biome
C.- Because it is located near the equator.

5.)In a tropical rainforest, animals have easy access to..
A.- Food

6.)In malay, orangutan means..
A.- King of the Forest
B.- King of the Jungle
C.-Man of the Forest

7.)The tropical rainforest looses 25% of water by..
A.-Plants and animals consuming it.
B- It evaporates into the air
C.-It runs into lakes, rivers, streams.

8.)In a tropical rainforest, the top layer of trees is called..
A.- Schrubs
B.-the Canopy
C.-The sun level