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The movement of matter and energy around the planet is very important, and its study is based on geology and meterology in addition to chemistry. Energy tends to flow upward from plant-like producers to herbivores and to carnivores before being broken down by detritovores and converted back into energy usable by producers, in addition to the photosynthesis or chemosynthesis used by producers to produce energy. Like energy, compounds vital to life, such as carbon, nitrogen and phosphorus, flow in cycles around the planet.
00:00 – Chapter 1. Introduction
04:04 – Chapter 2. Energy flow through ecosystems
20:51 – Chapter 3. Material cycling through ecosystem compartments
29:11 – Chapter 4. Biogeochemical cycles
48:13 – Chapter 5. Conclusion
Complete course materials are available on the Open Yale Courses website: http://open.yale.edu/courses
This course was recorded in the spring of 2009.
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