3 Communities, Biomes, and Ecosystems BIGIDEA Write the Big Idea for this chapter.

Transcription

1 3 Communities, Biomes, and Ecosystems BIGIDEA Write the Big Idea for this chapter. Use the What I Know column to list the things you know about the Big Idea. Then list the questions you have about the Big Idea in the What I Want to Find Out column. As you read the chapter, fill in the What I Learned column. K What I Know W What I Want to Find Out L What I Learned 27

2 3 Communities, Biomes, and Ecosystems 1 Community Ecology 11(B), 11(D), 12(B), 12(D) MAINIDEA Write the Main Idea for this lesson. REVIEW VOCABULARY abiotic factor Recall the definition of the Review Vocabulary term. abiotic factor NEW VOCABULARY climax community community ecological succession limiting factor primary succession secondary succession tolerance Use the new vocabulary terms to complete the following sentences Your includes the people, other animals, plants, bacteria, and fungi in your area. A is any abiotic or biotic factor that restricts the numbers, reproduction, or distribution of organisms. The ability of any organism to survive when subjected to abiotic or biotic factors is its. Changing abiotic or biotic factors can trigger the replacement of one community with another. occurs when a community becomes established in an area of exposed rock without topsoil. Eventually, a stable, mature can develop from bare rock. If a disturbance, such as fire, removes the community but not the soil, an orderly and predictable change called restores the community over time. 28

3 Student Edition, pp Reading Essentials, pp Predict how an unusually prolonged drought might affect a biological community. GET IT? Describe the relationship between a limiting factor and a range of tolerance. Create a tolerance graph similar to the Tolerance of Steelhead Trout figure in your book. Title your graph Tolerance of Plant A. Label the zones. Then label the limits of each zone according to the facts about Plant A listed below. can live at an elevation between 1,000 and 2,000 m can live at an elevation between 5,000 and 6,000 m cannot live above 6,000 m grows best between 2,000 and 5,000 m cannot live below 1,000 m 29

4 Infer other abiotic factors that might limit the survival of Plant A. Contrast primary succession and secondary succession. Give an example of each. Sequence the following steps in the primary succession of a forest by writing each step in the flowchart. perennial herbs and grasses lichens shade-tolerant trees bare rock shrubs and shade-intolerant trees small annual plants 30

5 REVIEW IT! 1. MAINIDEA Identify how temperature is a limiting factor for polar bears. 2. Predict how unfavorable abiotic and biotic factors affect an organism, population, and community. 3. Describe how ranges of tolerance affect the distribution of a species. 4. Describe how events and processes that occur in ecological succession can change populations or species diversity. 5. Interpret Figure 2 and predict the general growth trend for steelhead trout in a stream that is 22 C. 6. Graph the following data to determine the range of tolerance for catfish. The first number in each pair of data is temperature in degrees Celsius, and the second number is the number of catfish found in the stream: (0, 0); (5, 0); (10, 2); (15, 15); (20, 13); (25, 3); (30, 0); (35, 0). 31