Ecosystems - Living World

Descrição

GCSE Geography Mapa Mental sobre Ecosystems - Living World, criado por Diana Michalevitsh em 22-05-2016.
Diana Michalevitsh
Mapa Mental por Diana Michalevitsh, atualizado more than 1 year ago
Diana Michalevitsh
Criado por Diana Michalevitsh mais de 8 anos atrás
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Resumo de Recurso

Ecosystems - Living World
  1. Biomes
    1. Large scale of an ecosystem
      1. Vegetation levels in Rainforest
        1. Shrub Layer
          1. Under Canopy
            1. Canopy
              1. Emergents
        2. Eco system- where all living and non living things live in harmony together in an area
          1. Decomposer - organism that gets its energy from dead material, fungi, bacteria, dead leaves and dead consumers and producers
          2. CASE STUDY - Temperate Deciduous Forest EPPING FOREST
            1. East Essex - north of London
              1. 70% is TDF
                1. strecthes over 6000 Acres
                2. Used as a royal hunting ground
                  1. Musrum, golf, cycling, historical buildings, fishing etc.
                  2. 1878, Act of Parliment "Epping Forest act" Giving city of London ownership of and care of Epping Forest
                    1. Pollarding
                      1. Top branches of trees cut off, so new shoots would grow and not topple and die when they become too heavy
                      2. Carefully monitoring the Forest and making sure that there are no problems
                      3. TROPICAL RAINFORESTS
                        1. Plant Adaptations
                          1. Fan Palms- good for catching sunlight and water
                            1. Lianas- woody vines at ground level
                              1. thick, waxy leaves for heavy rainfall with pointed tips so the water can run off them
                                1. Big Buttress roots - tall trees- this is to support the very heavy trees in shallow soil
                                  1. Climbing plants- Lianas , climb up tree to get light
                                    1. The trees are deciduous , so they drop their leaves in drier periods, to reduce water loss
                                      1. STRANGLER FIGS
                                      2. Deforestation
                                        1. Farming
                                          1. Road building
                                            1. increasing Population - making land
                                              1. Rescources
                                                1. Commercial Logging - felled to make money
                                                  1. ENVIRONMENTAL AND SOCIAL IMPACTS
                                                    1. Loss of animal habitats and lead to endangerment of animals and extinction
                                                      1. Soil Erosion as there are no trees to hold the soil together
                                                        1. Soil washing into lakes and rivers can kill fish, makes water undrinkable and flooding as rise of water levels
                                                          1. Less fertile soil as there is no leave fall from trees to provide the nutrients
                                                            1. Loss of Oxygen and more CO2.
                                                      2. The quality of life is improved as there are more jobs to provide
                                                        1. Livelihoods of local people destroyed as they depend on animals and plants and make a living
                                                          1. Some native tribes have been forced to move as their land has been cleared
                                                            1. Conflict of local people, native people , mining compaines and logging companies
                                                      3. SUSTAINABLE MANAGMENT
                                                        1. Selective Logging
                                                          1. Only some trees like the older ones are felled, most trees are left standing. This is less damaging to the forest. doesnt leave soil exposed. Left to regenerate so it can be used in the future
                                                          2. Replanting
                                                            1. New trees are planted. more trees used for the future
                                                              1. Environmental laws- when companies log the area they have to replant them
                                                            2. Education
                                                              1. Some local people do not know the environmental impacts of deforesation
                                                                1. Alternate ways to make money that do not damage the environment
                                                              2. Reducing demand for Hardwood
                                                                1. Some richer countries are trying to reduce the demand so fewer of these tree species are cut down.
                                                                2. ECO TOURISM
                                                                  1. Eco tourism is tourism that does not harm the environment and benefits the local people
                                                                    1. provides income for local people so they do not have to harm the enviorment to gain money
                                                                    2. Small scale activity , which keeps the environment impact of tourism low
                                                                    3. Protection
                                                                      1. Make logging illegal on some trees, make logging illegal
                                                                        1. Set up natural parks and natural reserves whithin rainforests
                                                                    4. CASE STUDY - AMAZON RAINFOREST
                                                                      1. Covers around 8 million km 3 including Brazil, Peru, columbia etc. Since 1970 around 600,000 km3 has been destroyed by deforesation
                                                                        1. 60% - cattle ranching
                                                                          1. 33% small scale farming
                                                                            1. 3% Logging
                                                                          2. Biotic- living things of an enviornment
                                                                            1. Abiotic - non living things- temperature, weather , water, soil type
                                                                              1. Fertile Soil, that makes farming possible is lost when trees are cleared
                                                                              2. CASE STUDY- SAHARA DESERT (LEDC)
                                                                                1. North of Africa - Tropic of Cancer- Near middle of Algeria and Sahel
                                                                                  1. Largest desert covering 9 million Km3.
                                                                                    1. High pressure- creating cloud free environment
                                                                                      1. Plant Adaptation-
                                                                                        1. Thick fleshy leaves to store water
                                                                                          1. Cactus, Succulents that store and hold water in leaves, stems and roots
                                                                                            1. LONG roots to get as much water in the soil
                                                                                              1. Short life cycles- a seed will remain dormant until rain comes to conserve its energy
                                                                                                1. Reduced leaves
                                                                                              2. Austrailian Outback
                                                                                                1. Vegetation is very dry and spiky
                                                                                                  1. Soil- Sandy and gravelly in texture , cracked
                                                                                                    1. would be fairly moist throughout the year and very dry as there is a lot of rain however high temperature
                                                                                                    2. Cactuses, succulents
                                                                                                      1. Cactuses can survive years without water because they collect so much from the rain by their spikes
                                                                                                      2. The outback can be so hot and dry at times that sudden wild bush fires can start and destroy the vegetation and homes of the wildlife

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