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Lecture Human ecology - Chapter 3: Ecosystems and energy

Overview of chapter 3: What is ecology? the energy of life: laws of thermodynamics, photosynthesis and cellular respiration; flow of energy through ecosystems: producers, consumers and decomposers, ecological pyramids, ecosystem productivity. | Ecosystems and Energy Overview of Chapter 3 What is Ecology The Energy of Life Laws of Thermodynamics Photosynthesis and Cellular Respiration Flow of Energy Through Ecosystems Producers Consumers and Decomposers Path of Energy Flow Who Eats Whom Ecological Pyramids Ecosystem Productivity 2015 John Wiley Sons Inc. All rights reserved. Chesapeake Bay salt marshes An estuary - semi-enclosed body of water where freshwater drains into ocean Tidal - gradual changed from fresh to salt water Cordgrass dominates - brackish Home to insects and birds nursery for fish Very important buffer for coasts against storms 2015 John Wiley Sons Inc. All rights .