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Ecology

Ecology. What is it?. A division of science The study of the interactions of living organisms with one another and their physical environment Population Community Ecosystem Biosphere. Where to start?. How do ecosystems form? Succession

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Ecology

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  1. Ecology

  2. What is it? • A division of science • The study of the interactions of living organisms with one another and their physical environment Population Community Ecosystem Biosphere

  3. Where to start? • How do ecosystems form? • Succession • Regular progression of species replacement that occurs after a disturbance or development of a new habitat • Species replacement? • One species replaces another • Disturbance • Natural • Hurricanes, fires, tornadoes, floods, etc. • Human • Clearing, fires, building, etc. • New habitat • NEW! Never sustained life before!

  4. Two types of Succession • Primary Succession • Think first! • Succession that occurs in a newly formed habitat that has never before sustained life • Example: Retreated glacier

  5. And the second type… • Secondary Succession • Succession that occurs in areas where there has been previous growth, such as abandoned fields or forest clearings • Example: Forest fire

  6. What makes up an ecosystem? • Population • Organisms of the same species living in one place at the same time • Community • Organisms of many different species living in one place at the same time

  7. Ecosystem! • All organisms living in a particular place at the same time and all the biotic and abiotic factors that affect their way of life • Biotic – living • Abiotic – non-living • Biosphere • All of Earth’s ecosystems

  8. Factors • Biotic • Living • Abiotic • Non-living

  9. List the Biotic and Abiotic Factors

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