Module 9S2 Changes in Populations

4.9.2S2 page 3

Discuss

On the discussion board, brainstorm with other students and/or your instructor as to what technologies might assist field biologists in their counts of dangerous animals, highly mobile species (insects, migratory organisms), aquatic organisms, and very small species. List several technologies in your course notes.

Self-Check

It is very important in this module to practice problem solving. Similar questions will be part of your Diploma exam.

SC 1. Do questions 5, 6, and 7 on page 709 of your text.

SC 2. Your job is to determine N for black spruce in a 100 km2 parcel of land. In the chart below are the numbers of black spruce found in 5 randomly chosen quadrats of 1km2 each.

Reflect on the Big Picture

Finally, we have the key to the previous lessons which are all based on data about the numbers of individuals with certain phenotypes or alleles. Without the work of field biologists who actually get out and reliably count the organisms, all of our analysis and application to the concept of genetic change and evolution cannot be carried out. You should see now that accurate counts are essential to the process. Why?

Self-Check

To review the concepts of this lesson and prepare for your assessment, complete the procedure questions from Thought Lab 20.1: Distribution patterns and population size estimates, on p. 706.

You are now ready to apply your understanding to the following assignments. Submit your work to your instructor.