1. Start-Up: 1. Find the definition of biotic and abiotic in your text. 2. Identify the abiotic and biotic features in this picture. 3. Is this a population or a community? 4. Describe some of the interactions shown.

2. Explore This Ecosystem

3. Ecology is the scientific study of the interactions between organisms and their environments The goal of ecology is to understand the biological principles of how natural systems operate. Note! Ecology is not environmentalism! Ecology – science, not value based Environmentalism – value based

5. Climate Determines Ecosystem Patterns in the Biosphere -Earth’s climate patterns are produced by the uneven heating of the planet by the sun -causes a varying range of temperature, wind, and amount of rainfall

6. The major types of terrestrial ecosystems that cover the Earth are called biomes . The major biomes are named after their climax vegetation .

17. Aquatic Ecosystems

19. Streams & Rivers - freshwater

23. Deep-sea – no light; chemosynthetic prokaryotes are producers Very little is known about the population status of deep sea species