What's it like in a Tropical Rainforest?

1. What's it like in a Tropical Rainforest?  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools

2. The Tropical Rainforest is a forest occurring in tropical areas of heavy rainfall. It is abundant with many species of wildlife and vegetation. Rainforests cover less than two percent of the Earth's surface. They are home to some 50 to 70 percent of all life forms on our planet. Rainforests are the most productive and most complex ecosystems on Earth All AboutRainforests What is a Rainforest?Rainforests are very dense, warm, wet forests. They are havens for millions of plants and animals. Rainforests are extremely important in the ecology of the Earth. The plants of the rainforest generate much of the Earth's oxygen. These plants are also very important to people in other ways; many are used in new drugs that fight disease and illness.  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools

3. Where areTropical Rainforests? Where are tropical rainforests? Tropical rainforests are located in a band around the equator (Zero degrees latitude), mostly in the area between the Tropic of Cancer (23.5° N latitude) and the Tropic of Capricorn (23.5° S latitude). This 3,000 mile (4800 km) wide band is called the "tropics." The equator is an imaginary circle around the earth, halfway between the north and south poles. Temperatures at the equator are high. These high temperatures cause accelerated evaporation of water, which results in frequent rain in forested areas in the tropics. There are rainforests in South and Central America, Africa, Oceania (the islands around Australia), and Asia. Tropical rainforests cover only about 7% of the Earth's surface.  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools

4. What is the CLIMATE of a tropical rainforest? Hot all year, very hot here! Lots of rain all year round  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools

5. Why is it so hot and wet?l  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools

6. What's this?  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools

7. And inside.....  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools

8. Structure of the rainforest The dominant plants in a rainforest are giant trees. The hot wet climate enables them to grow all year round, and they remain evergreen, continuously shedding their leaves and growing new ones. The average height of rainforest trees is about 45 metres, although the emergence (trees which tower above the others) may go as high as 90 metres. Smaller trees growing the under story (layer between the canopy and the forest floor). Several layers can be identified within the forest  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools

9. 45 40 35 30 25 20 15 10 5 AEmergent tree canopy BLarge trees of Middle layer CLower tree layer DShrub/small tree layer  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools EGround vegetation

10. Canopy layer - formed by the crowns of the tall trees and • contains a mass of branches, Leaves, flowers and fruit. • Conditions in the canopy vary, and include: • Hot sunshine • Heavy rainfall • Tropical storms • Middle layer - the Vegetation here is more sparse. The trees tend to have pointed crowns and, when a giant tree falls, they grow quickly to fill a gap in the canopy • Conditions within the forest on more or less constant: • There is little variation in temperature • The air is moist and still • Rain on the canopy drips to the forest floor several minutes later • A breeze is rare, even during storms  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools

11. Shrub layer - scattered shrubs, saplings (young trees) and ferns. Herb layer - a few non-woody, soft stemmed plants with thin leaves. Leaf litter - thin layer covers the forest floor. Soil layer - most roots growing the top 10 centimetres whether nutrients are found.  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools

12. Emergent trees are the tallest in the forest, some up to 70 metres.  It is hot, dry and bright at this level.  Animals use tall trees as look-out perches. The canopy is the warmest, wettest and lightest part of the rainforest.  More creatures live here than anywhere else.  The canopy is 25-45 metres above ground and trees here are green and leafy. The understorey is made up of tall shrubs and short trees.  This layer is damp and not very light because the sunlight is blocked by taller trees.  Large animals, like gorillas and leopards, live here. The forest floor is the darkest, warmest part of the rainforest.  Only plants which like shade can grow here.  The forest floor is covered with fallen leaves and twigs  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools

13. Layers of the Rainforest • Different animals and plants live in different parts of the rainforest. Scientists divide the rainforest into strata (layers) based on the living environment. Starting at the top, the strata are: • EMERGENTS: Giant trees that are much higher than the average canopy height. It houses many birds and insects. • CANOPY: The upper parts of the trees. This leafy environment is full of life in a tropical rainforest and includes: insects, birds, reptiles, mammals, and more. • UNDERSTORY: A dark, cool environment under the leaves but over the ground. • FOREST FLOOR: Teeming with animal life, especially insects. The largest animals in the rainforest generally live here.  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools

14.  The following plant adaptations enable tropical plants to live in the hot, humid, and wet conditions of the tropical rainforest.  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools

15. Strong scent of fruits attracts animals, which feed on the fruit and assist in dispersal of the seeds Strong scent and bright colours of flowers attract insects which assist in pollination Thick, waxy surface of leaves protects against hot sun, heavy rain, and strong winds Aerial roots of epiphytes absorb moisture from the air Tall straight trunks no side branches Thin, smooth bark Shallow spreading root system Buttress roots  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools

16. buttress roots Wide roots stop these enormously tall trees from falling over. They also wind above the ground looking for food and nutrients rather than digging beneath the ground where nutrients are scarce.  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools

17. drip tips These specially designed leaves allow all the rainwater to drip off the leaf quickly so it doesn’t get too heavy and break!  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools

18. lianas Have their roots in the ground and then climb up the trees to reach the sunlight.  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools

19. Rainforest plants And the enormous the number of different species of plants grow in rainforests, with many species occurring only in one particular region. Unlike other forests, rain forests have an abundance of : Epiphytesplants which live above the ground growing on tree trunks and branches, Example orchids, ferns, mosses Climbing plantsincluding large woody climbers called lianas which are rooted in the soil and usually reach the canopy. The climbers twist around the tree trunks, and loop from one tree to another in the canopy, binding the trees together.  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools

20. Parasitic plant Pitcher plant - a carnivorous plant. slippery rim tendril Insects falling into the pitcher are digested, and nutrients which are released are absorbed by the plant. Orchid - sun-loving roots attached themselves to branches and absorb nutrients  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools

21. Animals that Live in Rainforests: • Ridiculously huge numbers of animals live in rainforests, including microscopic animals, invertebrates (like insects and worms), fish, reptiles, amphibians, birds, and mammals. The different rainforests of the world support different populations of animals. A few animals from each rainforest are listed below: • South America - • insects (morpho butterfly, Julia butterfly, Monarch butterfly, and millions of other insects) • mammals (jaguar, ocelot, didelphid opossums, sloth, howler monkey, spider monkey, capybara, many bats, marmosets, procyonids, peccaries) • birds (quetzal, macaw, tinamous, curassows, hoatzins, hummingbirds, eagles, ovenbirds, antbirds, flycatchers, puffbirds, toucans, jacamars, tanagers, tapirs, troupials, honeycreepers, cardinal grosbeaks, xenops) • reptiles (anaconda, caiman, iguanas, lizards, microteiid lizards, boas, and coral snakes), amphibians (poison arrow frog, etc.) • fish (electric eel, piranha), and millions of other animals.  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools

22. The rainforests have a lot to offer…….. So everybody wants a piece of the action!  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools

23. The trees are being cut down at an alarming rate! DEFORSTATION  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools

24. So why are the trees being removed………………… Settlements Mining Timber Cattle Ranching  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools

25. So what does it mean for us? Yummy McDonalds! Iron Ore to make steel Luxurious furntiture  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools Exciting holidays!

26. But it’s not all good news! Trees release oxygen which we need to breath! Medicines from the rainforest will be lost! Burning the trees adds to global warming!  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools And what about the poor old animals?

27. SAVE OUR TREES?  Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography and only for non commercial use in schools