1. Mrs. Costa SCIENCE ~ CHAPTER 11 LIVING RESOURCES

2. Forests and Fisheries SECTION 3

3. Organisms in ecosystems exchange energy and nutrients among themselves and with the environment. Each organism in an ecosystem fills the energy role of producer, consumer, or decomposer, and has a variety of adaptations that are suited to its specific living conditions. (Chapter 10) ANTICIPATORY SET

4. S 6.5.b – Students know different natural energy and material resources, including air, soil, rocks, petroleum, fresh water, wildlife, and forests, and know how to classify them as renewable or nonrenewable S 6.5.c – Students know the natural origin of the materials used to make common objects STANDARDS

5. Not all resources are renewable Two major types of renewable resources are forests and fisheries THE BIG IDEA

6.  Renewable resource – a resource that is either always available or is naturally replaced relatively quickly  Clear-cutting – the process of cutting down all the trees in an area at once  Selective cutting – the process of cutting down only some trees in an area  Sustainable yield – amount of a renewable resource harvested regularly without reducing future supply  Fishery – an area with a large population of valuable ocean organisms  Aquaculture – the farming of water organisms KEY TERMS

7. Forests contain many valuable resources FOREST RESOURCES

8. Many products are made from…  Fruits, seeds, and other parts of forest plants  Living trees:  Maple syrup, rubber, nuts  Cutting down trees:  Lumber  Wood pulp (for making paper) FOREST RESOURCES

9. Trees and other plants also…  Produce oxygen that organisms need to survive  Absorb carbon dioxide and many pollutants from the air  Help prevent flooding and control soil erosion FOREST RESOURCES

10. Read Forests and Fisheries and Forest Resources on page 457 of your textbook FOREST RESOURCES

11. Because new trees can be planted to replace trees that are cut down, forests can be renewable resources MANAGING FORESTS

12. There are two major types of logging:  Clear-cutting  Selective cutting LOGGING METHODS

13. Each logging method has its advantages and disadvantages  Clear-cutting:  Quicker and cheaper  Soil is exposed to wind/rain, and more easily blown/washed away  Selective cutting:  Loggers must move the heavy equipment and logs around the remaining trees  Less damaging to the forest environment LOGGING METHODS

14.  Forests can be managed to provide a sustainable yield  Planting a tree to replace one that was cut down SUSTAINABLE FORESTRY

15. Read Managing Forests on pages 458-459 of your textbook MANAGING FORESTS

16. An area of ocean with many valuable ocean organisms is called a fishery FISHERIES

17.  Until now fisheries seemed like an unlimited resource  Fish were caught faster than they could breed  Known as overfishing  Scientists estimate that 70 percent of the world’s major fisheries have been overfished FISHERIES

18. Managing fisheries for a sustainable yield includes:  Setting fishing limits  Changing fishing methods  Developing aquaculture techniques  Finding new resources FISHERIES

19. Read Fisheries on pages 460-461 of your textbook FISHERIES

20. Two major types of renewable resources are _________________ and __________________. The two major methods of logging are ______________________ and _______________ ____________________. Forests can be managed to provide a ______________________ ________________. Until recently, fisheries were thought to be an ______________________ ____________________. GUIDED PRACTICE

21. Two major types of renewable resources are forests and fisheries. The two major methods of logging are clear-cutting and selective cutting. Forests can be managed to provide a sustainable yield. Until recently, fisheries were thought to be an unlimited resource. GUIDED PRACTICE

22. Complete Biomes 11-3 Independent Practice Worksheet INDEPENDENT PRACTICE