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APES Population Calculation Practice £ ei 1. You are documenting a rebounding population of an endangered salamander. You mark 60 individuals in a particular forest, then return for four recaptures over the next 2 months. You count an average of 15 marked salamanders in your recapture sample of 45 salamanders. What is the forest population of salamanders? ke > o-oo FT ri =z PFUEO sebemincecs) 2. A population has a crude birth rate of 10 and crude death rate of 5. How many years will it take for this population to double? an es S ae . 2 3 pel @ eee SO : fate. - [! gt pris (EOD 600 (Oee . sft 3. What is the percent growth rate for a population that increases from 100 to 800 over 60 years? (08 Pac 702 — Bse Ge on st py. eS dens Ft, 2 (ogee Ta? ae POs 4. a. The population of Europe was approximately 38 million in the year 1000. By 1350, the population had rcached 76 million. What was the growth rate of Europe during this time? FE auttcan 276 mill's, * Aocbled Arn, (CO2-2/380 = BSP GS, b. The “Black Death” brought the European population down to approximately 50 million. At this time, 2.5 million people died in one year. What was the crude death rate for this year? 2.9 mllven cliteth: 265° SU mitten pop Sb _ 32 a | a oe [ede =So |} 1000 ih 5 a. If acity of 1,000,000 experiences 22000 births, 4000 deaths, 2000 immigrants, and 6000 emigrants in the course of a year, what is its annual percent growth rate? _ Brcthi brn CCGA, Ems (eee +2000)- (Yeeo + écor —__—— >) _ ~%00e - /pceo (, C0l 20d 1, O27 B00 Z b. If the city maintains this growth rate the population will double in how many years? . A population that doubles in 35 years has a crude rate of 28 births, What is the crude death rate’! 2 ee aos 2 a Cbe > a] Le Gregrtth * a2 72L = 2e nef boty, xc CBZ -Che sO a = Wh ~ Coe 
