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Home Gallery Environmental Biology and Ecology
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Survivorship curves "منحنيات البقاء على قيد الحياة"
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Description
- Sex ratio = proportion of males to females
- In monogamous species, a 50/50 sex ratio maximizes population growth
- Age Structure = the relative numbers of organisms of each age within a population
- Age structure diagrams (pyramids) = show the age structure of populations
- Crude birth/death rates = rates per 1000 individuals
- Survivorship curves = the likelihood of death varies with age
o Type I: More deaths at older ages
o Type II: Equal number of deaths at all ages
o Type III: More deaths at young ages
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