Lab 6- QE.docx - WFB 4930/8610 – Quantitative Ecology Lab...

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WFB 4930/8610 – Quantitative Ecology Lab Assignment #6 Sarah Kerr Using Excel Harvest Models for Endangered Species Management Part I: Baseline run 1. a. The total population size projected after 25 years for the baseline run is 2,821.166 individuals. b. Lambda stabilizes for this baseline population at 1.102 at year 9. c. This baseline model doesn’t take into account harvest numbers and therefore the number will change once harvest values are added. 0 harvest is the baseline run. Part II: Proportional harvest 2. The maximum proportion of age class 1 ferrets which can be harvested and result in a stable lambda of at least 1.0 is .22 or 22% of the population can be harvested. 3. Table 1. Age Class Proportion of Males and Females Removed 2 0.22 or 22% 3 0.48 or 48% 4 1.0 or 100% 5 1.0 or 100% 4. The most important ages are 1 and 2 because only 22% of those age classes of males and females can be harvested to still maintain a stable population. As the age classes get older
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you can remove more and more ferrets and the population will still remain stable. The
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