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Published byArabella Benson Modified over 9 years ago
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WHAT CREATES AN ECOSYSTEM? Energy and nutrient flows create ecosystems. There are four main factors that determine the nature of biomes/ecosystems and their location. Climate (temperature, precipitation, light intensity, wind) Landform (altitude, angle of slope, direction of slope) Soil Competition between species
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WHAT IS THE DIFFERENCE BETWEEN AN ECOSYSTEM? A biome is a large (global) ecosystem. It contains many smaller ecosystems that are influenced by local conditions. There are a number of different classifications of biomes. Some say there are eight, others as many as 16. In each, there are many smaller ecosystems.
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WHAT ARE THE DIFFERENT TYPES OF BIOMES? Tropical Rainforest Tundra Taiga Temperate forest Temperate grassland Savanna: tropical grassland Mediterranean Desert
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TROPICAL RAINFOREST Almost all rain forests lie near the equator The temperature in a rain forest rarely gets higher than 34°C or drops below 20 °C More than half of all the world's plant and animal species live in tropical rain forests Tropical rainforests produce 40% of Earth's oxygen.
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MAP OF TROPICAL RAINFORESTS
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TUNDRA: Long cold winters Short cool summers Low precipitation Limited tree growth Permafrost
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TUNDRA
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TAIGA Taiga: Russian for forest Cold winters, short summers. In Canada, called boreal forest In the southern Taiga regions, predominantly coniferous trees (softwoods, cone bearing) 29% of world’s forests
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TAIGA
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TEMPERATE DECIDUOUS FOREST: Deciduous or broad leafed trees (hardwoods) Cool winters, warm summers Moderate precipitation Region often settled and cleared for agriculture
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TEMPERATE DECIDUOUS FORESTS
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TEMPERATE GRASSLAND Warm summer Cool to cold winter Fertile soils Largely grasses Known as prairies in North America, steppe in Russia, pampas in Argentina, veld in South Africa
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SAVANNA: TROPICAL GRASSLANDS Generally warm climate Not enough rain to support forest but some trees (not thick) Found between rainforest and desert Often distinct wet and dry seasons
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TEMPARATE AND TROPICAL GRASSLANDS
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MEDITERRANEAN Hot dry summers Cool wet winters Mixture of trees and shrubs
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MEDITERRANEAN
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DESERT 1/5 of the earth Hot and dry, cold and dry (the tundra is actually a type of desert) Under 200 mm per year (we get about 1300 mm per year in Nova Scotia)
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DESERT
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