<p>AP Bio Chapter 53 Population Ecology</p><p>1. A population is</p><p>2. Two important characteristics of a population are</p><p>3. List four different ways population density can be estimated.</p><p>4. Give the equation for the mark-recapture method of study:</p><p>Ex - In a mark-recapture study, an ecologist traps, marks and releases 25 voles in a small wooded area. A week later she resets her traps and captures 30 voles, 10 of which are marked. What is her estimate of the vole population in that area?</p><p>4. What are two ways that population changes?</p><p>5. List three types of population dispersal. </p><p>6. What is demography?</p><p>7. What are two areas that are of particular interest to demographers?</p><p>8. What is a life-table and what is a cohort?</p><p>9. A survivorship curve is a graphic way of representing the data in a life table. Identify the types of survivorship curves shown below, define them and give examples of groups that exhibit each curve. 10. What specific traits affect an organism’s life history?</p><p>11. What is the difference in semelparity and iteroparity? Unpredictable environments favor which one?</p><p>12. Give the two types of population growths, their equations, descriptions of environmental surroundings, and label on the graph below.</p><p>13. In logistic growth, populations can be K-selected or r-selected. Discuss each as to what is selected and impact on reproductive rate.</p><p>14. What is the difference in density dependent controls and density independent controls? Give examples.</p><p>15 What are age-structure graphs and what can be determined from them?</p>