L4 - Humans inhabit all biomes but are most prevalent in...

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Lecture #4 4.2 Ecology: The Study of Natural Systems Ecology is a field of science that seeks to describe relationships between organisms and their chemical and physical environment. The Biosphere The biosphere is an enormous biological system, spanning the entire planet. The materials within this closed system are recycled over and over in order for life to be sustained. The only outside contribution to the biosphere is sunlight, which provides energy for all living things. Biomes and Aquatic Life Zones The biosphere consists of distinct regions called biomes and aquatic life zones. Each has its own chemical and physical conditions and unique assemblage of organisms.
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Unformatted text preview: Humans inhabit all biomes but are most prevalent in those with the mildest climates. Five Major Types of Biomes Tundra Taiga Temperature deciduous forest Grassland Desert Also 4 types of Aquatic life zones, these are discussed in Chapter 5 : Coral reefs Estuaries (mouths of rivers where fresh and salt waters mix) Deep Ocean Continental Shelf 1 What is an Ecosystem? Ecosystems: biological systems consisting of organisms and their environment. Biotic components Abiotic components 2 Range of Tolerance Food Chains and Food Webs Food and energy flow through food chains that are part of much larger food webs in ecosystems. 3...
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L4 - Humans inhabit all biomes but are most prevalent in...

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