Interactions Within Ecosystems - DOC

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					                           Interactions Within Ecosystems
                                      Chapter 3
                                     Study Guide
Terms to know and apply:

succession               primary succession              secondary succession
pioneer species          climax community                silvaculture
natural resources        biodiversity                    endangered
extinct                  native species                  introduced species
renewable resources      sustainable/unsustainable       pollutants
acid rain                eco-tourism                     environmental impact assessment

Be able to:
1. Identify changes that have occurred in a local ecosystem over time.

2. Predict what an ecosystem will look like in the future based on the characteristics of the

3. Distinguish between primary and secondary succession.

4. Construct a flow chart of images to illustrate the changes occurring during primary and
secondary succession. Include:
     bare rock to forest (primary)
     forest re-growth after fire (secondary)

5. Describe the ecosystem changes that occur in the examples above. Include:
       soil composition
       plant types
       animal types
       amount of light

6. Describe how our need for a continuous supply of wood resulted in the development of
silvaculture practice.

7. Make informed decisions about forest harvesting techniques taking into account the
environmental advantages and disadvantages.

8. Provide examples of how our understanding of boreal forest ecology has influenced our
harvesting practices identifying the positive effects of these practices.

9. Identify various science- and technology-based careers related to forest management and

10. Propose and defend a course of action to protect the local habitat of a particular organism.
11. Describe how humans have influenced the environment. Include:
       habitat loss/destruction
       harvesting resources
       pollution
       introduced species

12. Debate the pros and cons of habitat conservation.
    Pros include:
     sustainability of resource
     preservation of biodiversity
     eco-tourism
    Cons include
     artificial habitats
     economic loss (job loss, etc.)
     limited human use

13. Provide examples of problems that arise in the environment that cannot be solved using
only scientific or technological knowledge. Include:
     decline in cod stocks
     oil slicks/spills
     acid rain

14. Be able to give examples of individuals or groups in Canada interested in protecting the
environment. Include:
     local groups and individuals
     national groups and individuals
     international groups and individuals

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