BIO120H1 Lecture Notes - Tallgrass Prairie, Primary Production, Temperate Climate
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BIO120H1 Full Course Notes
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High productivity b/c nutrients are gained through quick decomposition. Contains half of terrestrial species on earth. Composed of several different sub-biomes: evergreen rainforest, seasonal deciduous forest, tropical cloud forest, mangrove forest. Net primary productivity: 2-3 kg/(m * year) North and south of tropical forest biomes. Covers 60% of africa; a transition from tropical forests to deserts. Dry season fires occur, fire important, releases nutrients. Net primary productivity: 400-600 g/(m * year) Rich diversity of herbivores, dung beetles important for nutrient recycle. Occur in band around 15-30o n and 15-30o s. Cover 26-35% of land area of earth. Variety of deserts (cold, hot, high elevation, rain shadow) Dominated by perennial shrubs with extensive roots. Warm deserts: therophyes make up most of species diversity. Occur in interiors of continents; some of largest terrestrial animals are found here. Large seasonal temperature variation; very hot summer, very cold winter. High precipitation = tall grass prairie with high biodiversity of grasses.