2.1-2.3 Skills Practice Keep This Resource Sheet

2.1-2.3 Skills Practice – Keep this resource sheet 1. Draw an illustration of the following information: two maple trees support 250,000 termites. Those termites feed 15 woodpeckers. The woodpeckers support one hawk.

What is the name of this type of illustration?

2. What is the purpose of the Lincoln Index and why is it useful?

3. Using the data below, calculate the population size of deer mice in a local forest. On the first visit to the forest, ten deer mice were captured and marked. On a second visit 15 deer mice were captured and five of them were marked. Show your work.

N = n1 x n2

n1 = Number of animals captured the first day

n2 = Number of animals recaptured

n3 = number of marked animals recaptured on the second day

4. You are part of a scientific research team. Your job is to investigate the health of a river. You have been given enough time and resources to look at three different abiotic factors within the river. a. What three factors would you look into, and how would you look into them? (6)

b. Evaluate your three methods. (6) c. Justify why you chose to look into the factors that you did. (3)

5. The following data on small birds was collected in two different forested locations.

Forest A Forest B House Sparrow 16 6 Song Sparrow 19 57 Yellow Warbler 17 10 Chickadee 17 9 Ruby Crowned Kinglet 11 5 Dark Headed Junco 2 3

Use Simpson’s Diversity Index to determine which forest has greater diversity. Show your work.

D = Diversity Index

N = total number of organisms of all species found

n = number of individuals of a particular species

Calculate D for both forests. Explain which forest has greater diversity.

Explain which forest has greater species richness.